A builder’s quote is not just a number on a piece of paper. It is a document that protects you, sets clear expectations, and forms the foundation of your working relationship with a contractor. A vague or incomplete quote creates room for disputes, unexpected charges, and serious frustration once work is underway. Knowing exactly what a proper quote should contain puts you in a strong position before a single brick is laid.
Full Contact and Business Details
Any legitimate quote should carry the builder’s full business name, registered address, telephone number, and email address. If the builder operates as a limited company, the quote should include the Companies House registration number. Sole traders should still provide a fixed business address rather than just a mobile number.
This information matters. If a dispute arises, you need to know who you are dealing with legally. A quote that carries only a first name and a phone number offers you very little protection.
A Clear Description of the Work
The scope of work section is the most critical part of any quote. It should describe, in plain and specific language, exactly what the builder will do. Vague phrases like “general building works” or “as discussed” are not acceptable. Every task should be listed individually.
For an extension, this means specifying the groundworks, foundation type, blockwork or brickwork specification, roof structure, window and door installation, and internal finishes separately. For a kitchen refurbishment, it means listing wall preparation, floor levelling, fitting, tiling, and decoration as distinct line items. The more detail the scope contains, the less room there is for disagreement later about what was or was not included.
A Full Materials Breakdown
Labour and materials should always appear as separate line items, never bundled together into a single figure. The materials section should state exactly what products the builder intends to use, including brand names, specifications, and quantities where relevant.
This serves two purposes. First, it allows you to compare quotes accurately. Two quotes for the same job can look similar in total price but differ dramatically in the quality of materials specified. Second, it prevents a builder from substituting cheaper materials after you have agreed on the price, since the contract documents exactly what you agreed to receive.
If the builder plans to use allowances for certain items, such as tiles or sanitaryware that you will choose yourself, the quote should state the allowance figure. For example, “wall tiles: £35 per square metre supply allowance.” If you choose something more expensive, you pay the difference. If you choose something cheaper, the savings should come back to you.
Labour Costs Stated Separately
Labour should be broken down by trade where more than one trade is involved. If the project requires a bricklayer, a carpenter, a plumber, and an electrician, the quote should show the estimated labour cost for each rather than rolling everything into one figure. This transparency helps you understand where your money goes and makes it easier to assess whether the rates are fair.
Subcontractor Details
Many builders use subcontractors for specialist elements such as electrical work, plumbing, roofing, or groundworks. The quote should identify any planned subcontractors and confirm whether their costs are included within the quoted figure or whether they will invoice you directly. Surprises here can be costly. If a subcontractor invoices you directly for work you assumed was covered, the total project cost rises sharply beyond budget.
VAT Position
Every quote must state clearly whether the prices shown include VAT or exclude it. Builders who are VAT-registered must charge VAT at the current standard rate of 20% on most construction work. A quote of £20,000 plus VAT becomes £24,000 in practice. This distinction matters enormously when comparing quotes, since some builders may be VAT-registered and others may not.
If a builder claims to offer a significant discount for cash payment with no VAT, treat that as a serious warning sign. It almost certainly indicates undeclared income and leaves you with no paper trail if things go wrong.
A Payment Schedule
A professional quote or accompanying contract should set out a clear, staged payment schedule tied to specific milestones in the project. Payments should track real progress, not arbitrary dates.
A typical schedule for a medium-sized project might look like this: a deposit of ten to 15% on commencement, a further payment once the structure reaches a defined stage, such as wall plate level or first fix completion, another payment at second fix, and a final retention payment of five to 10% held until the work is fully complete and any snagging items are resolved.
Never agree to pay the full project cost upfront. Never pay large sums in advance of work that has not yet started. These are among the most common ways that homeowners lose money to unreliable contractors.
Project Timelines
The quote, or the contract that follows from it, should include an estimated start date and a projected completion date. It should also outline what happens if either party needs to adjust the timeline, and what notice is required.
Delays are common in construction. Materials run late, weather causes stoppages, and unforeseen site conditions slow progress. A good quote acknowledges this reality by building in a reasonable process for communicating and managing delays, rather than simply promising a finish date with no contingency.
Warranties and Guarantees
Ask whether the quote includes any workmanship warranty. Reputable builders typically offer a minimum of twelve months on their own labour, meaning they will return to rectify defects that appear within that period at no additional charge. Some offer longer warranties, particularly on structural work.
Materials often carry manufacturer guarantees separately. The quote should clarify what guarantees apply to the specific products being used, particularly for items such as roof membranes, windows, damp-proof systems, and boilers.
If the builder is a member of the Federation of Master Builders or another trade body, check whether their membership includes access to an independent warranty scheme or deposit protection. Some schemes protect your payments if the builder becomes insolvent before completing the work.
A Process for Variations
No building project runs exactly as planned. Clients change their minds. Hidden problems appear once walls are opened up. Ground conditions differ from what was expected. A well-written quote should include a clear variation procedure that explains how changes to the original scope will be priced, agreed in writing, and added to the contract before the additional work proceeds.
Verbal agreements mid-project are a significant source of disputes. Any change to the scope, whether it adds cost or removes it, should be confirmed in a signed variation order before the builder acts on it.
Insurance Confirmation
The quote should confirm that the builder holds public liability insurance covering at least £1 million, and employers’ liability insurance if they employ any workers directly. Ask to see the actual certificates rather than simply taking their word for it. Your own home insurance policy may also require you to notify your insurer before major building work begins, so check that separately.
What to Do Once You Have the Quote
Read it carefully from top to bottom. Question anything that appears vague. Ask the builder to expand on any section that uses broad language rather than specific detail. Compare it line by line with any other quotes you have received, not just the total price, but on what each quote actually includes.
A quote that covers all of the elements above is a sign of a professional, organised builder who understands their obligations and takes their work seriously. One that skips over the detail, bundles everything into a single number, or avoids putting things in writing, is a quote you should think very carefully about before accepting.
