PorchCISCISR14100VATNotice 708Invoice TemplateUK TradesDepositsDomestic Reverse Charge

Porch invoice template UK (2026): CIS, VAT and stages

By InvoiceAdept Editorial6 September 2026Updated 8 September 202623 min read

A porch invoice has to explain what was surveyed, excavated, footed, walled, roofed, glazed and finished - not a vague "porch done" line. "Supply and fit porch as agreed" does not tell a householder whether they got an enclosed UPVC front porch, an open oak canopy, a brick rear porch with a tiled roof, or a lean-to against the side elevation. It does not tell a contractor's QS which plot or PO to release, or how much is labour versus the direct cost of bricks, UPVC frames, roof tiles, glass, concrete and first-fix materials you paid for.

Porches are not conservatories, orangeries, full rear extensions or garden rooms - use the conservatory, extension, garden room and garage conversion templates for those. This page covers front porches, rear porches, enclosed and open porches, lean-to porches, oak porches, UPVC porches, brick porches and canopy porches - including foundations, walls, roof, doors, glazing, electrics and finishes. A porch-plus-side-extension hybrid should name both scopes clearly, or use the extension guide for the new-build wing.

Who pays matters. Billing a private householder on their own home: normal invoice, no CIS. Billing a main contractor for construction operations: often CIS. HMRC's CISR14100 treats alteration, repair or extension of buildings as construction operations (FA04/S74(2)(a)). Building a porch onto an existing dwelling is typically alteration or extension of a building when a CIS contractor pays you. When works sit in a wider preparatory or finishing package, CISR14240 is also relevant. Soften if you only manufacture or deliver materials with no install - CISR14220 and FA04/S74(3)(c) keep manufacture/delivery of building components alone outside CIS. Supply-plus-install can pull the whole payment into CIS (CISR14020 / CISR14030). Private householders are not CIS contractors - see the public CIS overview.

VAT is separate. If VAT-registered, an ordinary porch on an occupied existing dwelling is usually 20%. Do not claim VAT-free or 0% for a normal porch. VAT Notice 708 reduced rates (often 5%) only when conditions are met - for example a change in the number of dwellings, a qualifying empty-home renovation, or non-residential to dwelling conversion. Soften absolute claims; check Notice 708 and your VAT adviser. Design fees are usually standard-rated. Never reverse-charge a private householder.

This guide gives copy-paste fields, labour/materials splits, deposits, stages, four worked examples and CIS/VAT/DRC treatment. Figures are illustrative only, not market rates. InvoiceAdept does not decide CIS or VAT status and does not file CIS300, VAT returns, MTD updates or Self Assessment. It does not issue Building Control certificates, planning permissions or Party Wall awards.

Checked 6 September 2026. General information only - not tax, legal, Building Regulations, Party Wall or planning advice. InvoiceAdept is from Tech Me Today Ltd, Companies House 15917255, ICO ZB944663.

In short

Start by identifying who pays you, what porch type you built (front / rear / enclosed / open / lean-to / oak / UPVC / brick / canopy), whether foundations and roof are included, and whether the contract is supply-only or supply-and-install.

Private householder, own-home porch: no CIS. The householder is not a CIS contractor. If VAT-registered, an ordinary porch at an existing lived-in home is usually 20%. Show survey, foundations, walls, roof, doors/glazing, electrics, finishes, waste and snag clearly. Do not claim "VAT free" because it is a porch.

Porch package for a CIS contractor: typically within CIS when a contractor pays for alteration or extension of a building (CISR14100; FA04/S74(2)(a)). Cite CISR14240 for finishing/prep packages. Split labour from materials at direct cost (CISR15060 / CISR15090).

Manufacture and delivery of materials only (no install): generally outside CIS (CISR14220; FA04/S74(3)(c)). A mixed contract that supplies a UPVC porch kit, oak frame or brick package and includes installation can pull the whole contract into CIS (CISR14020 / CISR14030).

VAT reduced rate (5%) or zero: only when Notice 708 conditions are actually met. Ordinary porches on an occupied house stay 20%. Never reverse-charge a householder. Never invent 0% for a normal porch job.

Take a numbered deposit before ordering UPVC frames, oak, glass, bricks or roofing if your terms require one. Use stages: survey/deposit, foundations, structure/walls, roof/weathertight, finishes/snag. Keep glazing upgrades, roof changes or electrics adds as variations.

Use the invoice generator. Free: five invoices/month. Pro £7.99 excl VAT (WhatsApp). Pro+ £12.99 excl VAT (CIS). Stripe's fees apply (UK cards 1.5%+20p); InvoiceAdept adds no platform fee.

Who this porch invoice template is for

For UK porch specialists, builders delivering porch packages, and subcontractors who dig foundations, lay brick, erect UPVC or oak frames, roof, glaze or finish porches. Paperwork pattern only - not a price list, Building Control or planning document.

Porch specialists (front, rear, enclosed, open, lean-to, canopy)
UPVC porch installers and fabricators who also fit
Oak frame porch builders and carpenters
Bricklayers and builders adding brick porches with tiled or flat roofs
Roofers billing porch roofs as part of a package (or separately)
Electricians billing porch lighting, sockets or doorbells as part of a package
Subcontractors to main contractors on residential porch packages
Sole traders and limited companies who need CIS and VAT lines that match the payer

If your day job is a full conservatory, orangery, rear extension or stand-alone electrics with no porch focus, use the conservatory, extension or electrician guides and come back here for porch-specific lines.

Three porch jobs, three invoices

These three jobs can use similar frames and glass but need different invoice logic.

	Domestic householder porch	Contractor porch package	Empty-home / change-of-dwellings caution
Customer on invoice	Private householder	Builder, developer or specialist principal	Owner, developer or housing client
Contract	Build porch: foundations, walls/frame, roof, doors/glazing, finishes	Porch package to named plots or addresses	Porch works inside a Notice 708 qualifying conversion / empty-home renovation
CIS	No. Householder is not a CIS contractor.	Usually within CIS - CISR14100 alteration/extension; CISR14240 if finishing/prep package	Usually within CIS when a contractor pays you
Labour/materials	Helpful for clarity	Essential for correct deduction	Essential; free-issue frames/glass noted separately
VAT if registered	Usually 20% at an existing lived-in home	Normal VAT or reverse charge depending on tests	May be 5% only if Notice 708 conditions are met - check carefully
Key references	Public CIS guide	CISR14100; CISR14240	VAT Notice 708; public CIS
What often bounces it	"Porch done" with no type, roof or deposit credit; "VAT free" myth	Missing UTR, plot/PO, labour/material split	Claiming 5% on an occupied ordinary porch without evidence

A main contractor can be the CIS contractor even when the finished porch serves a tenant or homeowner. If the builder engages you, your invoice is to that builder. That contractor-to-subcontractor payment is the one to test. If the householder hires and pays you directly, the householder invoice has no CIS.

What porch work belongs on the invoice

Do not compress a multi-week porch into "supply and fit porch". Describe survey, foundations, walls or frame, roof, doors and glazing, electrics and finishes, and what another firm supplied.

Line-item family	Useful description	Clarify
Survey / design	Measured survey, quote reference, design drawing, structural note	Survey date; invoice is not planning or Building Control approval
Scaffold / access	Hired scaffold or towers if roof / gable works need it	Who hired scaffold; ticket number; period on site
Strip-out / prep	Remove existing canopy or porch, protect entrance, isolate services	Disposal method; temporary weather protection
Foundations / groundworks	Excavate, concrete footings, DPC, floor slab as specified	Depth; free-issue concrete vs your purchase
Walls / frame	Brick / block / timber stud / UPVC frame / oak frame	Spec; ties to existing; free-issue kit noted
Roof	Pitched tiles, flat roof, lean-to polycarbonate or glass roof	Spec; gutters and downpipes included or by others
Doors / glazing	Front door, side lights, windows, canopy glass	Model / U-value notes; free-issue vs your purchase
Electrics	Porch light, socket, doorbell, consumer-unit works if any	See electrician guide if billed separately
Insulation / linings	Wall insulation, plasterboard, skim if enclosed porch	Spec; may engage CISR14240 finishing when part of wider project
Floor finishes	Screed, tiles, threshold as package	Included vs by others
Waste / skip	Skip hire or bagged disposal of old porch, rubble	Included or by others
Building Control fee (if charged)	Fee paid to local authority or approved inspector	Receipt reference; not a completion certificate
Snag / retention release	Touch-ups; retention release line	Reference practical completion

Porch types to name clearly on the face of the invoice

Type	Typical invoice wording	CIS note (when contractor pays)	VAT caution if registered
Front enclosed UPVC porch	Supply and fit enclosed UPVC front porch as drawing ...	Usually CISR14100 alteration/extension of building	Usually 20% on occupied existing home
Front brick porch with tiled roof	Build brick front porch with pitched tiled roof as drawing ...	Usually CISR14100	Usually 20%
Open oak porch / canopy	Supply and fit open oak porch / canopy as drawing ...	Usually CISR14100 alteration	Usually 20%; "canopy" label does not create VAT-free claim
Rear enclosed porch	Build enclosed rear porch as drawing ...	Usually CISR14100	Usually 20%
Lean-to porch	Supply and fit lean-to porch against elevation as drawing ...	Usually CISR14100	Usually 20%
Canopy porch (no walls)	Supply and fit canopy porch / door canopy as drawing ...	Usually CISR14100 when fixed to building; soften edge cases	Usually 20%
Porch + side / rear extension hybrid	Porch plus new extension wing as drawing ...	CIS as alteration/extension; name both scopes	Usually 20% unless Notice 708 facts apply to whole project
Materials-only (UPVC kit / oak / glass)	Supply porch kit / oak frame / glass delivered - no install	Generally outside CIS (CISR14220)	Usually standard-rated supply
Repair / re-roof existing porch	Re-roof / reglaze / rebuild existing porch	Often repair of building fabric when contractor pays	Usually 20% on occupied home

What a UK porch invoice must include

UK invoices need the basics HMRC and customers expect. See GOV.UK invoicing guidance. For VAT-registered traders, VAT invoices need the extra fields in that guidance and your VAT registration number.

Field	Why it matters for porches
Your trading name and address	Who to pay and who issued the invoice
Customer name and address	Householder vs contractor identity
Unique invoice number	Deposit, stage and final must not collide
Invoice date and tax point	VAT timing; CIS period reporting
Description of work	Porch type, foundations, walls/frame, roof, doors/glazing
Labour vs materials split	Essential for CIS deduction base
CIS details (if applicable)	UTR, verification, rate 20% / 30% / 0% gross
VAT rate and amount (or reverse-charge wording)	Usually 20%; reverse charge only if DRC tests met
Totals due and payment details	Bank details; Stripe link if offered
Deposit credit / variation references	Stops double-billing arguments

VAT registration threshold is £90,000 (see VAT registration). Do not use outdated £85,000 figures. Deemed contractor status for CIS turns on construction spend of more than £3 million in the relevant period - never quote £1 million as the current threshold.

Copy-paste porch invoice fields

Use this as a checklist when building the invoice in software or on paper.

Invoice number: POR-2026-00XX
Invoice date:
Tax point (if different):

From:
[Trading name]
[Address]
[Phone / email]
[VAT number if registered]
[Company number if limited]

Bill to:
[Householder OR contractor company name]
[Site address / plot / PO]

Job reference / quote number:
Property / porch type: [front enclosed | rear enclosed | open oak | UPVC | brick | lean-to | canopy | repair/re-roof | supply-only]
Foundations: [yes - depth ... | by others | none / existing slab]
Walls / frame: [brick/block | UPVC | oak | timber stud | none - canopy]
Roof: [pitched tiles | flat | lean-to poly/glass | by others]
Doors / glazing: [as drawing ...]
Drawing / Building Control ref (if any):

Line items:
1. Survey / design / access / scaffold - £...
2. Strip-out / preparation / temporary weatherproofing - £...
3. Foundations / groundworks - materials at direct cost £... ; labour £...
4. Walls / frame - materials £... ; labour £...
5. Roof - materials £... ; labour £...
6. Doors / glazing - materials £... ; fit labour £...
7. Electrics (if included) - £...
8. Insulation / linings / finishes - £...
9. Floor finishes / threshold (if included) - £...
10. Variation [ref] - £...
Less: Deposit credit INV-... - (£...)
Less: CIS deduction (if applicable) - (£...)
VAT (or reverse charge statement) - £...
Amount due - £...

Payment: bank details / Stripe
Due date:
CIS: UTR ... Verification ... Rate 20% / 30% / 0% gross (contractor jobs only)
Building Control: fee charged separately / by client - ref ...
Planning / permitted development: client responsibility / noted separately - invoice is not consent

Sole trader versus limited company

	Sole trader	Limited company
Name on invoice	Your trading name / own name	Company name as registered
Company number	Not applicable	Show Companies House number
CIS	Personal UTR; verification as subcontractor	Company UTR; company verification
VAT	Personal VAT number if registered	Company VAT number if registered
Payment	Account in the trading name shown	Account matching the company where possible

InvoiceAdept supports both patterns. It does not file your CIS300 or VAT return either way.

Labour versus materials for porch CIS

For CIS, materials at direct cost can be excluded from the deduction base (CISR15060/ CISR15090). Mark-up is not materials. Free-issue UPVC frames, oak, glass or bricks from the contractor are not your materials - note them as free-issue so you do not claim them in the materials exclusion.

Item	Usually labour (in CIS base)	Usually materials (direct cost, if you paid)	Watch-outs
Strip-out / old porch removal	Yes	-	Disposal labour; skip may be separate
Foundations / concrete	Yes	Concrete, steel, DPC you paid for	Free-issue concrete: show separately
Brick / block walls	Yes	Bricks, blocks, mortar, ties you paid for	Match existing fabric notes
Fitting UPVC / oak frame	Fitting labour	Frame / kit cost you paid	Free-issue kits: note separately
Roofing	Yes	Tiles, felt, timber, polycarbonate, glass you paid for	Gutters may be separate
Fitting doors / glazing	Fitting labour	Door/glass cost you paid	Free-issue openings: note separately
Insulation / linings	Yes	Insulation and boards you paid for	May engage CISR14240 when part of finishing package
Electrical first / second fix	Yes	Cable, fittings you paid for	Certificate is separate
Floor finishes (if in package)	Yes	Screed / tiles you paid for	Optional flooring as variation if not in base quote
Hired scaffold (you hired)	Often treated carefully - follow your CIS advice	Hire ticket cost may be plant/materials depending on facts	Separate scaffold invoices are cleaner when a scaffolder bills the contractor
Skip / waste	Labour to clear; hire may be separate	Skip hire if you paid	State included vs by others
Glazing / roof / door upgrade	Variation labour + any extra product	Extra product at direct cost	Raise a variation

CIS deep dive: porches as building alteration or extension

Porch work paid by a CIS contractor is usually construction operations because it alters or extends an existing building. Prefer CISR14100 for alteration, repair or extension of buildings (FA04/S74(2)(a)). Use CISR14240 when the package is preparatory or finishing work bringing construction to completion (scaffold, insulation as part of a wider project, certain fittings). Materials-only supply without install sits under CISR14220. Mixed contracts: CISR14020 / CISR14030. Materials at direct cost only: CISR15060 / CISR15090.

Situation	CIS likely?	Primary references
Householder pays you for porch on their home	No	Public CIS guide - householder not a contractor
Builder pays for enclosed UPVC or brick porch	Yes, typically	CISR14100 (alteration/extension of buildings)
Developer pays for porch as finishing package	Yes, typically	CISR14100; CISR14240
You only deliver UPVC kit / oak / glass, no install	Generally no	CISR14220; FA04/S74(3)(c)
Mixed supply + install of porch kit and labour	Often yes for the whole contract	CISR14020 / CISR14030; take advice
Open oak canopy fixed to dwelling for a contractor	Usually yes as alteration of a building	CISR14100; softens on edge cases - take advice
Repair / re-roof existing porch for a contractor	Often yes as repair of building fabric	CISR14100
Deemed contractor pays you	Test who pays; deemed status >£3m construction spend	Public CIS guide
Electrician / roofer as your subcontractor on the package	Your invoice to the CIS contractor may still be CIS; their invoice to you is a separate CIS test	Keep their invoices; do not invent their status

Householder invoices never carry CIS deduction blocks. Contractor invoices need UTR, verification outcome and a clear labour/materials split when deduction applies.

VAT: the "VAT free porch" myth versus Notice 708

An ordinary porch on an occupied existing dwelling is usually standard-rated at 20% if you are VAT-registered. Calling it an "entrance", "canopy", "oak feature" or "lean-to" does not make it VAT-free.

Bucket	Typical treatment if VAT-registered	Honest caution
(a) Ordinary porch on an occupied existing dwelling	Usually 20%	Do not claim VAT-free because "it is a porch", "it is permitted development" or "it adds entrance space"
(b) Qualifying residential conversion / empty-home renovation under Notice 708	May be 5% when conditions and evidence are met	Change in number of dwellings; empty 2+ years renovations; non-residential to dwelling - document the facts; softening absolute claims is essential
(c) Supply of materials / kits without installation	Usually standard-rated	Delivery-only UPVC kits or oak frames are not an install
(d) Design / surveyor / consultant fees	Usually standard-rated	Even when some construction services are reduced-rated

Soften every absolute claim. Check VAT Notice 708 and take advice before issuing a 5% invoice. Never invent 0% for a normal occupied-home porch. Never reverse-charge a private householder.

Domestic reverse charge

Domestic reverse charge may apply when all of these hold: both parties VAT-registered; the supply is construction services reported within CIS; the rate would otherwise be standard or reduced (not zero); and the customer is not an end user. Never reverse-charge a private householder. See InvoiceAdept's domestic reverse charge invoice guide.

Customer	Typical VAT face of invoice	Reverse charge?
Private householder	20% (or reduced only if Notice 708 truly applies)	Never
VAT-registered CIS contractor, standard-rated porch package	Reverse charge wording if tests met; customer accounts for VAT	Possibly yes
VAT-registered CIS contractor, genuine reduced-rate qualifying conversion	Reduced rate face - reverse charge can still apply where RC tests met (not zero)	Possibly - take advice
End user (even if company)	Normal VAT rules	Usually no reverse charge

Scaffold, electrics, roofing and specialist trades on the invoice

Porches often pull in several trades. Keep the face of the invoice clear about who did what.

Pattern	How to invoice	Tip
You hire scaffold and include in package	Line: "Scaffold hire period ... ticket ..." plus labour	Keep hire ticket on file
Separate scaffolder bills householder/contractor	Your invoice excludes scaffold; note "scaffold by others"	Link to related scaffolder patterns on other guides
Electrician as your subcontractor	Package electrical lines on your invoice; keep their invoices in your records	See electrician invoice template
Electrician bills householder directly	Note "electrics by others"	Customer holds Part P paperwork
Roofer as your subcontractor	Package roof lines; keep their invoices	Spec tiles / flat / polycarbonate clearly
Roofer bills householder directly	Note "roof by others"	Customer holds guarantees
UPVC fabricator bills you	Materials at direct cost (kit purchase) on your CIS split	Keep delivery note / purchase invoice
Oak supplier free-issues frame	Note free-issue; do not invent a materials cost	Fitting labour still labour for CIS
Groundworker / bricklayer as your subcontractor for foundations/walls	Package foundation/wall lines; keep their invoices	See builder and bricklayer guides
Flooring / tiling by a separate fitter	Note "floor finishes by others" or package if you subcontract	Keep optional flooring as variation if not in base quote

Deposits and staged payments for porch packages

Multi-day or multi-week porches need staged cashflow. Take a numbered deposit before ordering UPVC frames, oak, glass, bricks or roofing if your terms require one. Then invoice recognisable milestones.

Stage (illustrative pattern)	What it usually covers	Invoice tip
Deposit	Frame / oak / glass / brick / roof order / mobilisation	Numbered; state "deposit against quote Q-..."
Stage 1 - foundations	Excavate, footings, DPC, slab start	Photos help QS / householder
Stage 2 - structure / walls	Brick walls or frame erected; openings formed	Structure milestone clear on face
Stage 3 - roof / weathertight	Roof complete, doors/glazing fitted, weatherproof	Weatherproof milestone clear on face
Stage 4 - finishes / snag	Electrics, linings, floor finishes, snag; retention release if used	Credit deposit; show retention if any

Figures for deposit percentages are commercial choices - mark them illustrative only when you show examples. Do not invent "industry standard" percentages. See the deposit invoice template.

Variations and retention

Extra glazing, a pitched roof instead of flat, oak instead of UPVC, electrics adds or floor tiling should be written variations referencing the original quote - not silent final-total increases.

Variation type	Invoice wording pattern
Glazing upgrade	Variation V1 to quote Q-...: revise glazing to ...
Pitched roof instead of flat	Variation: supply and fit pitched tiled roof as sketch ...
Oak instead of UPVC	Variation: revise frame to oak as drawing ...
Electrical add	Variation: additional porch light / socket / doorbell as drawing ...
Floor tiling add	Variation: supply and fit porch floor tiles as spec ...
Scaffold extension	Variation: extra scaffold week(s) ticket ...
Foundations deeper than assumed	Variation: extra excavation / concrete to engineer instruction EI-...
Canopy to enclosed porch upgrade	Variation: enclose canopy with walls and door as revised drawing ...

If retention is held on a contractor package, show withheld and released amounts on separate lines. For householders, keep consumer-friendly stage language - do not paste commercial retention onto a domestic job unless the written contract uses it.

Worked examples A-D

All money figures below are illustrative only. They are not market rates, quotes or a price list.

Example A - domestic enclosed UPVC front porch for a householder (20% VAT, no CIS)

Private householder; enclosed UPVC front porch; foundations included; no CIS.

Line	Amount (illustrative)
Survey / access	£220
Strip-out of existing canopy	£180
Foundations / groundworks (materials you bought)	£950
Foundations labour	£780
UPVC frame, doors and glazing (materials)	£2,400
Frame and glazing fit labour	£1,350
Roof (lean-to / polycarbonate package)	£680
Electrics - porch light and doorbell	£220
Finishes / threshold / snag	£320
Subtotal	£7,100
VAT at 20%	£1,420
Total due	£8,520

No CIS block. Deposit of £1,500 (illustrative) would appear as a separate numbered invoice then as a credit on stage or final invoices.

Example B - contractor brick porch package (CIS 20%, reverse charge)

VAT-registered subcontractor to VAT-registered main contractor; brick front porch with pitched tiled roof; CIS verified 20%; reverse charge applies (illustrative assumption that tests are met).

Line	Amount (illustrative)
Labour - porch plot 7 (foundations, brick walls, roof, doors, finishes)	£4,800
Materials at direct cost (concrete, bricks, timber, tiles, door, glass, fixings)	£3,600
Gross (labour + materials)	£8,400
CIS 20% on labour element £4,800	(£960)
Net after CIS	£7,440
VAT	Reverse charge - customer accounts for VAT

Show UTR, verification and reverse-charge wording clearly. Materials at what you paid (CISR15060/ CISR15090). Free-issue door from the contractor: note separately; do not invent a cost.

Example C - empty-home renovation porch (CIS; VAT depends)

Porch works inside a wider empty-home renovation. CIS usually applies when a contractor pays you. VAT may be 5% only if Notice 708 empty-home / qualifying conversion conditions are actually met - soften and take advice; do not assume 5% from "empty" alone.

Line	Amount (illustrative)
Labour - build porch within empty-home package address ...	£3,900
Materials at direct cost	£2,800
Gross	£6,700
CIS 20% on labour £3,900	(£780)
Net after CIS	£5,920
VAT	5% only if Notice 708 conditions evidenced - otherwise 20% or reverse charge if DRC tests met

Document emptiness period, change-of-dwellings facts or other Notice 708 evidence before putting 5% on the face. Soften absolute claims. If reverse charge also applies, the customer accounts for VAT at the applicable rate - never invent 0%.

Example D - materials-only UPVC porch kit delivery, no install

Supply of UPVC porch kit delivered to site; no fitting. Generally outside CIS (CISR14220; FA04/S74(3)(c)). Usually standard-rated VAT if you are registered.

Line	Amount (illustrative)
Supply UPVC porch kit as quote Q-22	£2,150
Delivery	£85
Subtotal	£2,235
VAT at 20%	£447
Total due	£2,682

If a later variation adds installation labour under the same contract, revisit mixed-contract CIS rules (CISR14020/ CISR14030) - supply-plus-install can pull the whole contract into CIS.

Building Control, Party Wall and planning - the invoice is not a certificate

An invoice is a request for payment and a commercial record. It is not:

a Building Control completion or final certificate
planning permission or lawful development / permitted development confirmation
a Party Wall Act award
an electrical Part P / competent person notification
a structural engineer sign-off (unless that professional issues their own document)

Porches often need Building Regulations approval (structure, foundations, thermal, electrics). Planning or permitted development questions depend on size, height, frontage and local rules - that is the client's position, not something your invoice proves. Soften absolute PD claims. High-level only: check GOV.UK and the local planning authority / Building Control body. If you collect a Building Control fee, show it as a disbursement with the receipt reference. Party Wall awards stay separate. InvoiceAdept does not issue Building Control certificates, planning permissions or Party Wall awards.

Late payment (brief)

The Late Payment of Commercial Debts (Interest) Act 1998 is a B2B regime, not automatic against private householders. For qualifying commercial debts, statutory interest is Bank Rate + 8pp (SI 2002/1675). Bank Rate was 3.75% on 30 July 2026 -> statutory 11.75% while that rate applies - check the live Bank of England rate. Next decision referenced: 17 September 2026. Compensation bands £40 / £70 / £100. Do not paste commercial late-payment wording onto consumer invoices.

Making Tax Digital means records, not filing

InvoiceAdept creates and stores invoice records. It does not file VAT returns, CIS300, MTD updates or Self Assessment, and does not decide VAT rates or submit Building Control/planning paperwork. MTD for ITSA phases in by turnover: over £50,000 from 6 April 2026; £30,000 from April 2027; £20,000 from April 2028. Keep digital records; filing remains your (or your accountant's) job.

How InvoiceAdept helps porch contractors

InvoiceAdept turns quotes and stage history into readable invoices - not HMRC software or a Building Control platform.

Plan	Price (excl VAT)	Fit for porch work
Free	£0	Five invoices per month; useful to try, tight for multi-stage packages
Pro	£7.99	More invoicing workflow and WhatsApp send
Pro+	£12.99	CIS invoice features for contractor-paid work

Separate survey, foundations, walls/frame, roof, doors/glazing, electrics, deposits and variations; send PDF; offer Stripe where enabled. No InvoiceAdept platform fee on Stripe (Stripe's own fees apply - UK cards 1.5%+20p). See pricing, CIS features and the invoice generator.

Quote versus invoice versus retention on contractor packages

A quote is an offer. An invoice is a request for payment against agreed or certified work. Retention is a contract term, not a tax rule.

Document	Role	Porch tip
Quote / specification	Scope, type, roof, exclusions	Name front vs rear; enclosed vs open; state foundations and roof included or by others
Deposit invoice	Cash before frame/oak/glass/brick order	Numbered; credit later
Stage invoice	Payment for completed milestones	Match foundations / weathertight / finishes language
Variation	Changed scope	Glazing upgrade, oak swap, electrics - never silent
Final invoice	Balance after credits	Deposit credit, retention withheld/released lines
Retention release	Cash previously held	Separate clear line tied to PC or defects end

Mistakes that bounce porch invoices

Mistake	Why it bounces	Fix
"Porch done" with no type or roof	Householder/QS cannot match scope	Name type, foundations, walls/frame, roof, doors/glazing
CIS lines on a householder invoice	Wrong - householder is not a CIS contractor	Remove CIS block
Claiming VAT-free / 0% on ordinary occupied porch	Myth - usually 20%	Use 20% unless Notice 708 conditions truly apply
Claiming 5% without conversion / empty-home evidence	Notice 708 does not work on hope	Document conditions or stick to 20%
Reverse-charging a householder	Wrong DRC application	Never RC householders
Materials mark-up inside CIS materials line	Inflates materials exclusion	Direct cost only (CISR15060 / 15090)
Free-issue frames / glass claimed as your materials	False materials claim	Note free-issue separately
Treating supply-only as CIS labour	Wrong - CISR14220 / FA04/S74(3)(c)	No CIS on pure manufacture/delivery
Ignoring mixed contract when install added later	Whole contract may enter CIS	Revisit CISR14020 / CISR14030
Missing deposit credit	Double billing dispute	Number deposit; credit on final
Silent glazing / roof / oak extras	Scope fight	Written variation
Treating invoice as Building Control / planning / Party Wall consent	False expectation	Separate certificates; soften PD claims
Using £85,000 VAT or £1m deemed contractor figures	Outdated / wrong	£90,000 VAT; more than £3 million deemed contractor
Saying InvoiceAdept files CIS300 / VAT / MTD or issues certificates	False product claim	Records and invoices only
Confusing porch with conservatory, orangery or full extension on the face	Wrong scope match	Link conservatory / extension / garden room pages; name porch clearly
Omitting labour/materials split on contractor CIS jobs	QS / CIS deduction errors	Split every stage invoice

FAQ

Does a porch come under CIS?

Often yes when a CIS contractor pays you for construction operations that alter or extend a building - for example building an enclosed UPVC or brick porch onto a dwelling. Prefer CISR14100 (alteration, repair or extension of buildings; FA04/S74(2)(a)). Use CISR14240 when works are part of a preparatory or finishing package. A private householder paying you directly is not a CIS contractor.

Does a householder deduct CIS from a porch contractor?

No. A private householder is not a CIS contractor. Domestic porch invoices should not carry CIS deduction blocks. See the public CIS overview.

Are front, rear, enclosed and open porches within CIS for contractor jobs?

Typically yes when a contractor pays for alteration or extension of a building (CISR14100), or as finishing/prep within a wider package (CISR14240). Split labour and materials; show UTR and verification as your process requires. Open canopies fixed to a building are usually still alteration when under a construction contract - soften edge cases; take advice.

What if I only supply a UPVC porch kit, oak frame or glass with no installation?

Manufacture and delivery of building components without installation is generally outside CIS (CISR14220; FA04/S74(3)(c)). Mixed contracts that also include install need careful reading of the mixed-contract rules (CISR14020/ CISR14030) - supply-plus-install can pull the whole contract into CIS.

What can I treat as materials for CIS on a porch job?

The direct cost of materials you paid for on that contract - concrete, bricks, blocks, timber, UPVC kit, oak, glass, tiles, insulation, plasterboard, doors, fixings, cable - supported by evidence (CISR15060/ CISR15090). Mark-up is not direct-cost material. Free-issue materials from the contractor are not your materials.

Is a porch VAT free in the UK?

Usually no. An ordinary porch on an occupied existing home is typically standard-rated at 20% if you are VAT-registered. Do not claim VAT-free or 0% for a normal porch job. Soften absolute claims; check VAT Notice 708 and your adviser.

When can porch works be 5% VAT?

Possibly when Notice 708 conditions for a qualifying residential conversion (change in number of dwellings), empty-home renovation (typically empty 2+ years), or non-residential to dwelling conversion are met. Soften absolute claims; document the facts and take VAT advice. Calling a porch "permitted development" or an "entrance canopy" does not create a 5% claim on an occupied house.

When does reverse charge apply to porch invoices?

When the domestic reverse charge tests are met: both parties VAT-registered, the supply is construction services reported within CIS, standard or reduced (not zero), and the customer is not an end user. Never reverse-charge a householder. Never invent reverse charge on genuine 0% supplies. See the DRC invoice guide.

Should I invoice a deposit before ordering a UPVC kit, oak or glass?

If your terms require a deposit, yes - raise a numbered deposit invoice, then credit it on stage or final invoices. See the deposit invoice template.

How should I invoice an extra door, pitched roof or oak upgrade?

As a written variation referencing the original quote, not as a silent increase on the final total.

How should foundations and roof appear on my porch invoice?

As separate clear lines (or a named package line that still describes both): foundations/groundworks, then walls/frame, then roof and doors/glazing. Vague "porch works" lines bounce when the QS or householder cannot match the structure.

Does InvoiceAdept file CIS, VAT or MTD returns, or issue Building Control / Party Wall certificates?

No. It creates and stores invoices. CIS features are on Pro+ at £12.99 excl VAT; Pro is £7.99 excl VAT with WhatsApp send; Free is five invoices per month. It does not file CIS300, VAT returns, MTD updates or Self Assessment and does not decide tax status. It does not issue Building Control certificates, planning permissions or Party Wall awards.

What CIS rates should appear if the contractor deducts?

20% verified, 30% unverified, or 0% with gross payment status - whatever verification outcome applies. InvoiceAdept does not verify you with HMRC.

Is the VAT registration threshold still £90,000?

Yes - £90,000. Do not use £85,000. Deemed contractor construction spend is more than £3 million, not £1 million.

Does MTD for Income Tax mean InvoiceAdept files my Self Assessment?

No. MTD ITSA phases in by turnover (over £50,000 from 6 April 2026; £30,000 from April 2027; £20,000 from April 2028). InvoiceAdept helps you keep invoice records; it does not file MTD updates or Self Assessment.

About this guide

Written for UK porch specialists, builders and subcontractors who need householder and contractor invoices that survive QS review and CIS/VAT scrutiny. Last reviewed 6 September 2026. Canonical URL: https://invoiceadept.com/blog/invoicing/porch-invoice-template-uk/.

General information only - not tax, legal, Building Regulations, Party Wall or planning advice. InvoiceAdept is a product of Tech Me Today Ltd, Companies House 15917255, ICO ZB944663.

Bottom line

Name the porch type, foundations, walls/frame and roof. Split labour and materials for CIS - and remember CISR14100 puts alteration or extension of buildings in scope when a contractor pays. Keep householder invoices free of CIS. Treat VAT carefully - ordinary occupied-home porches are usually 20%, not VAT-free; Notice 708 5% only when conditions are evidenced. Use deposits and variations for multi-stage packages. Distinguish porches from conservatories, orangeries, extensions and garden rooms. InvoiceAdept helps you issue the paperwork; it does not file HMRC returns or issue certificates.

Ready to get started?

InvoiceAdept helps UK tradespeople send invoices, track payments, and stay compliant — all from one place.

Start for free

No credit card required