For UK garden room builders

Garden room quote template (UK)

A clear layout for a garden room quote that sets out the base, structure, cladding, glazing, electrics and VAT properly, so the customer knows what is included before you break ground.

Last updated 15 July 2026 · 6 min read

What a garden room quote should include

Garden room quotes go wrong in two predictable places: the ground under the base, and the spec of the glazing and cladding on show. Get those two right and the rest of the build prices cleanly. A good garden room quote fixes the visible work firmly and handles the ground conditions honestly, so the customer is not surprised and you are not out of pocket.

Your business and registration. Trading name, address, contact, and your VAT number if registered. Name your registered electrician for the supply run.
The customer and the site. Their name and the property address, plus access for a digger, mixer or delivery.
A specific scope. Base and groundworks, timber frame structure, insulation to walls, roof and floor, cladding, roofing, glazing, electrics and internal finish.
Labour and materials. Days by your rate, plus concrete or ground screws, timber, insulation, cladding, roof membrane, windows and doors named where it helps the customer trust the price.
VAT. If registered, subtotal, 20% VAT and total. If not, say so.
Timeline. Days on site and the order of trades, since groundworks, frame and glazing usually run in sequence.
Payment terms. When you expect payment and any deposit against ordered windows, doors and cladding.
Exclusions. Decking, landscaping, mains connection beyond an agreed point and planning fees are often excluded. Say so clearly.
Validity period. "Valid for 30 days" so a glazing price does not follow you around after supplier costs move.

A garden room quote example

The figures below are illustrative and shown only to demonstrate the layout. They are not market rates. Price every job from your own supplier prices and day rate.

Section	Detail	Amount (example only)
Base and groundworks	Clear and level plot, form concrete base or lay ground screws to suit ground conditions	£X
Structure and insulation	Treated timber frame, insulation to floor, walls and roof, breather membrane	£X
Cladding and roofing	Cedar, composite or rendered cladding, EPDM or sedum roof with trims	£X
Windows and doors	Supply and fit aluminium bi-fold doors and windows, glazed and sealed	£X
Electrics and internal finish	Registered electrician supply and circuits, plasterboard, skirting, flooring and decoration	£X
Subtotal		£X
VAT (20%, if registered)		£X
Total		£X

Scope note: "Form base to suit ground conditions, erect insulated timber frame, clad and roof, supply and fit bi-fold doors and windows, first and second fix electrics by registered electrician, board, finish and decorate internally. Excludes decking, wider landscaping and planning fees." Terms note: "Price assumes firm, level ground suitable for the base priced. Any ground condition found on excavation that calls for extra work will be quoted and agreed in writing before proceeding. Valid for 30 days."

The mistakes that cost garden room builders money on a quote

Pricing a base before you know the ground. Soft ground, a slope or a high water table can turn a simple slab into ground screws or piled foundations. Price the base carefully and add a clear variations line.
Leaving the glazing and cladding spec loose. Cedar, composite and render sit at different prices, and bi-fold doors vary hugely by size and make. State the exact spec so the customer is not comparing your quote against a cheaper material.
Not saying who does the electrics. A supply run is notifiable under Part P and needs a registered electrician. Name whether it is in your price or by others.
Ignoring permitted development limits. Size, height and use can push a build into a planning application. Do not promise a timeline that assumes permitted development when the site may not qualify.
Assuming decking and landscaping are in. Steps, a deck, paths and making good the garden are easy to leave out. Exclude them plainly or price them as a separate line.
Confusing a quote with an estimate. A quote is a fixed price. An estimate can move. Label the document as one, never both. See quote vs estimate.

Should a garden room builder send a quote or an estimate?

For a defined build, an insulated garden room to an agreed size and spec on ground you have assessed, quote it firmly. Where the ground is unknown until you dig, or the customer has not settled on cladding and glazing, an estimate with a firm quote to follow is the honest approach. Put the scope and variations in writing either way. Our guide to quote vs estimate for UK trades explains when each is fairer.

Send a garden room quote in two minutes

Type the job and your prices, and QuoteSmith turns them into a branded PDF proposal with scope, timeline, terms and VAT set out clearly, with your logo on it. Built for UK tradespeople.

Get Started

QuoteSmith is £19.99 a month. Unlimited quotes. Cancel anytime. Also on the App Store.

This page is practical quoting guidance, not legal advice, and it does not cover planning permission, permitted development or electrical registration obligations, which are set by the applicable rules. For a serious dispute or a large sum, take proper advice.

Garden room quote FAQ

What should a garden room quote include?

Your business and any registration details, the customer and site, a specific scope covering the base, structure, insulation, cladding, roofing, glazing, electrics and internal finish, a breakdown of labour and materials, VAT, a timeline, payment terms, exclusions and a validity period.

Why does the base make such a difference to a garden room price?

The base depends on ground conditions. A level, firm plot may take a straightforward concrete slab, while a slope, soft ground or a high water table may call for ground screws or piled foundations. Because you cannot always see this until you dig, price the base carefully and add a variations line for ground you find on site.

Does a garden room need planning permission?

Many garden rooms fall under permitted development, but size, height and use matter. Sleeping accommodation, a proportion of the plot covered and being close to a boundary can all trigger a planning application. The exact limits are set by the applicable rules, so confirm the position for each site before you commit a price.

Who should do the electrics in a garden room?

A supply run to a garden room is notifiable work under Part P and should be carried out by a registered electrician. Name in the quote whether the electrics are included in your price or by others, so nobody assumes it is covered when it is not.