How to Write a Professional Building Quote in the UK

A professional building quote starts with a clear description of the work. Measure the job, calculate labour and material costs, allow for overheads and profit, then present the selling price alongside any applicable VAT, payment terms and a quote expiry date. Most importantly, make it clear what is included, what is excluded and what happens if the work changes.

A well-written quote gives customers confidence in the price and protects the builder from misunderstandings. It also makes it much easier to check whether a job will actually be profitable before committing to it.

What Should a Building Quote Include?

Whether you're pricing a garden wall, a patio, fencing or a larger renovation, a customer should be able to understand the proposed work and its cost without having to call you for clarification.

Include:

• Your business details: business name, address and contact information.
• Customer and site details: the customer's name and the address where the work will take place.
• Quote reference and dates: an identifiable quote number, issue date and expiry date.
• Scope of work: what you'll do, including important quantities, materials and specifications.
• Exclusions and allowances: anything not included or not yet fully priced.
• Itemised selling prices: a clear breakdown by task or work package.
• VAT and total: show whether VAT applies and the total amount payable on the stated assumptions.
• Timescales and payment terms: expected start, estimated duration, deposit or stage payments where relevant.
• Acceptance and changes: how the customer accepts the quote and how additional work will be agreed.

Business details and quote references

Using a consistent document format helps you avoid missing details. Your logo can make the quotation recognisable, but clarity matters more than decoration.

If you operate through a limited company, check the disclosure rules that apply to your business correspondence. UK government guidance requires a company name on company documents, and additional details, including its registration number, registered office and jurisdiction of registration, on business letters and order forms. See GOV.UK's guidance on company stationery.

Give each quote its own reference, such as ABC-0042, so you and the customer can identify the correct version. Include an expiry date too. For example, a quote might be valid for 30 days, but you can choose a shorter period when supplier prices are particularly volatile.

What's the Difference Between a Quote and an Estimate?

A quote normally gives a price for defined work. An estimate indicates a likely cost when some details are still uncertain.

For example, if you've inspected a patio, measured the area and agreed the paving specification, you may be able to provide a fixed-price quote. If hidden groundwork might need extensive repairs, you could instead provide an estimate, price a clearly defined part of the work or identify an appropriate allowance.

Don't describe a price as fixed and then bury broad exceptions in the small print. State the assumptions honestly. Acceptance of a quotation can create a legally binding contract, depending on the wording and circumstances, so treat the document as a serious commitment rather than a rough sales message.

For a fuller explanation, see our guide to the difference between a quote and an estimate.

Survey the Job and Define the Scope

A precise quote starts before you open a spreadsheet or quoting tool. It starts with finding out exactly what needs doing.

Record measurements, materials and access

During a site visit, note:

• Dimensions and quantities, such as square metres of paving or linear metres of wall.
• Existing conditions, including any visible damage or obstacles.
• Material specifications, finishes and customer choices.
• Access for deliveries, skips, machinery and tradespeople.
• Likely waste removal, protection and making-good work.

Photos and a simple sketch can save a surprising amount of time when you write the quote later.

“Build a new garden wall” leaves too much open to interpretation. “Demolish and remove the existing wall, then construct an approximately 8 m long, 1.2 m high wall in the agreed facing brick” gives everyone a much clearer starting point. You would still need to specify relevant structural details and foundations for the actual job.

State what's excluded

Be specific about work that isn't priced. Depending on the project, exclusions could include hidden drainage repairs, planning or design fees, repairs to neighbouring structures or customer-supplied products.

Explain who is responsible for obtaining necessary permissions or approvals. Don't assume a customer knows whether building regulations, planning permission or another consent may be needed.

If a selection or part of the work is unknown, make the uncertainty explicit. A provisional sum is an allowance, not a guaranteed final price. Explain what the allowance covers, what would cause it to change and how the revised amount will be agreed.

How to Calculate the Price of a Building Job

The biggest quoting mistake isn't always a maths error. It's forgetting a cost entirely.

For a detailed breakdown of labour, materials, overheads and profit, see our guide on how to price a building job, including a worked patio example.

Work out your direct costs

Start with what the job will consume:

Estimate labour for each task, including setup and clearing up. Use current supplier prices where possible and include a realistic allowance for waste. If a subcontractor is involved, obtain their price before committing yours.

Allow for overheads and risk

Van costs, insurance, software, accountancy and other running expenses don't disappear when you're on site. Your prices need to recover those overheads as well as the costs of each individual job.

One straightforward approach is to estimate your annual overheads and spread them over a realistic number of chargeable days. Avoid dividing by every working day in the year if many of those days are spent travelling, quoting or doing administration.

If you're a sole trader, our guide to working out your day rate explains how to allow for running costs and estimated personal taxes when pricing for your ideal take-home pay. Its calculated rate already includes running costs, so avoid adding those costs again.

Consider identifiable risks separately. Restricted access or uncertain ground conditions can affect the work significantly. For uncertainties that cannot be responsibly fixed-price, use clear assumptions or agreed allowances rather than silently gambling on the outcome.

Understand markup and profit margin

Markup is added to cost. Profit margin measures profit as a percentage of the selling price. They are not interchangeable.

If an item costs £100 and you add a 20% markup, you charge £120 before VAT. The £20 difference is a 16.7% margin, not 20%.

To achieve a 20% margin on a £100 cost, the selling price would be £100 ÷ 0.80 = £125.

And remember: the difference between direct cost and selling price isn't necessarily net profit. It may still need to pay your overheads.

How to Present Costs and VAT on a Building Quote

A customer needs understandable selling prices, not necessarily a breakdown of your internal costs or markup percentages.

Group prices in a way that matches the work: site preparation, demolition, groundwork, construction, finishing and waste removal, for example. Include quantities where useful. “Supply and lay 24 m² of sandstone paving” tells the customer much more than “paving works”.

Show the right VAT treatment

Only VAT-registered businesses can charge VAT. As of October 2026, the UK compulsory VAT registration threshold is more than £90,000 of taxable turnover, although businesses can also register voluntarily. The conditions are explained in GOV.UK's VAT thresholds guidance.

Most building work on existing homes is standard-rated at 20%, but certain qualifying projects attract 5% or 0%. For example, some new-build construction and qualifying renovation or conversion work have different treatment. Never assume every type of construction work uses the same rate. Check HMRC's VAT guidance for builders and VAT Notice 708 when the correct rate isn't clear.

If you aren't VAT registered, don't add VAT to the quote. You can simply state that no VAT has been charged because the business is not VAT registered.

Working for another contractor? Construction Industry Scheme (CIS) deductions and the VAT domestic reverse charge can affect how payments and VAT are handled. They are different systems, and their application depends on the parties and the work involved. See HMRC's domestic reverse charge guidance, or consult an accountant before preparing paperwork for those arrangements.

Set Payment Terms, Timescales and Conditions

Good payment terms make clear when each amount is due. On a larger project, you might agree a deposit and payments linked to identifiable stages. Avoid vague milestones such as “halfway through”. Any scheduled payments should add up to the full agreed amount and shouldn't accidentally count a deposit twice.

State an expected start date or window and anticipated duration, together with important dependencies such as material availability, approvals, customer decisions and weather.

Explain how a customer accepts the quotation and what happens if they request changes. A sensible process is to describe the additional work, agree its price and any effect on the schedule in writing before proceeding.

Consumer cancellation rules can also apply to certain contracts made online, by phone or away from the trader's premises. The requirements and exceptions vary, including for some construction contracts. Don't rely on a generic cancellation clause: check the applicable rules before using your terms. See GOV.UK's distance-selling guidance.

For a detailed breakdown of quantities, foundations and labour, see how to quote for a brick garden wall.

Building Quote Example: A Garden Wall

Here's a simplified example showing how a builder might turn internal job costs into customer-facing prices. All figures are illustrative, not typical UK market rates. The example assumes a VAT-registered business undertaking standard-rated work, and it deliberately excludes any final price for coping stones until the customer makes a selection.

Step 1: Calculate internal costs

A builder has inspected a small garden-wall replacement job and estimated:

Suppose the business adds 25% to labour, 20% to materials and 15% to skip costs. In this simplified example, those markups must cover overheads and provide a profit contribution.

Step 2: Calculate the selling prices

The selling prices are calculated as £1,200 × 1.25, £640 × 1.20 and £280 × 1.15 respectively. The customer-facing quote can group work differently, provided the descriptions clearly match what will be delivered.

Step 3: Show the unresolved item separately

The customer hasn't chosen coping stones. Instead of making the £3,108 look like an unconditional final price, the quote could say:

Coping stones not included in the fixed price. An indicative allowance of £200 excluding VAT has been discussed. A separate written price will be provided once the product and installation requirements are confirmed.

That avoids confusing a fixed-price total with an adjustable provisional amount. For jobs that actually use a provisional sum, specify its contractual treatment and how changes to the total will be authorised.

Step 4: Add scope and terms

The final document should combine those numbers with customer details, the site address, a clear work description, exclusions, expected timing, payment conditions and a validity date. For example, if you agree stage payments, write the precise amounts and when they're due rather than leaving the timing open to interpretation.

A professional quote is more than the final price. It's a shared description of what that price buys.

Check and Send Your Building Quote

Before sending a quote, review it from the customer's point of view. Can they tell exactly what work is included? Are the important materials and dimensions recorded? Is the VAT treatment clear? Have you accounted for waste, access, hire charges and other easily missed costs?

Also check the basics: names, addresses, reference numbers, dates and arithmetic. Reusing an old Word document can save time, but it's easy to leave the previous customer's details in it.

Word templates or quoting software?

A Word document or spreadsheet may be enough if you only quote occasionally. If you're producing quotes regularly, however, copying details and checking calculations can become a time-consuming part of the week.

Our comparison of Word quote templates and quoting software explains the trade-offs in cost, calculations and repeated admin, so you can choose an approach that suits your workload.

Quote Forge is an online quoting tool for UK tradespeople. It can help you build quotes using saved line items, calculate prices and VAT, reuse customer details from previous quotes and generate a professional PDF. You still decide the scope, costs and selling price; the software helps organise the document and reduce repetitive administration.

Whatever you use, preview the final PDF and keep a copy of the quotation you sent. If the customer later asks for extra work, record the agreed changes separately rather than silently replacing the original.

Frequently Asked Questions

Can I use a free Word template for a building quote?

Yes. A Word template can work well for straightforward jobs, provided it includes the necessary details and you check the scope, prices and customer information each time. The main disadvantage is the manual work involved as quotes become more frequent or complex.

Should I send a building quote as a PDF?

Usually, yes. A PDF helps preserve the formatting across phones and computers and reduces accidental editing. Check the finished document before sending it.

Do I need to show my material costs and markup to the customer?

Generally, you can show agreed selling prices rather than revealing your internal purchasing costs and markups. What matters is that your customer can understand the priced work and any contractual requirements for a breakdown are met.

How long should a building quote remain valid?

There is no universal validity period for every job. Thirty days is a practical choice for some projects, while a shorter period may be appropriate if supplier prices are changing quickly. Put the expiry date directly on the quote.

Is an accepted building quote legally binding?

It can be. Whether a binding contract exists depends on the terms, acceptance and surrounding circumstances. If you're quoting a substantial project, use properly drafted terms rather than assuming the heading “quotation” settles every legal question.

Can I increase the price after a customer accepts?

Not simply because you've underestimated your costs. Any permitted changes depend on the agreed terms and circumstances. If the customer requests extra work, document the change and agree the additional amount before carrying it out.

Final Thoughts

The best building quotes are precise without being difficult to read. Define the work, price it carefully, show a clear total and agree what happens if something changes. A consistent process gives customers fewer reasons to question the document and gives you a better chance of completing the job at the price you intended.

If creating that paperwork takes too much time, Quote Forge can help you put together, save and export professional quotations without starting from a blank document each time.