How to Read a Builder's Quote: What Every Line Actually Means

Most homeowners receive a builder's quote and immediately skip to the bottom line. That's understandable — but it's also how you end up with mismatched expectations, hidden extras, and disputes that could have been avoided from the start.

Here's a complete breakdown of how to read and evaluate any builder's quote with confidence.

The anatomy of a good quote

A well-structured quote should have four distinct sections: a scope of works description, a materials breakdown, a labour cost summary, and the terms. If any of these are missing, that's already a yellow flag.

The scope of works is the most important part. It should describe exactly what will be done — room by room, stage by stage. Vague language like "general building works" is a red flag. The more specific the scope, the less room there is for disputes later.

Understanding materials costs

Some builders quote materials at trade price (what they pay), others at retail (what you'd pay in a DIY shop), and some add a markup of 10–25% on top of trade. None of these is inherently dishonest — but you need to know which one you're looking at.

Ask your builder directly: "Are materials priced at trade, retail, or with a markup?" A reputable tradesperson won't be offended. If they are, that tells you something.

Typical 2026 materials markups range from 10% for larger contractors to 20–25% for sole traders, who need to recover vehicle and sourcing time.

Labour: day rates vs fixed price

A fixed-price quote is safer for the homeowner. A day-rate quote is more common for jobs where the scope is uncertain — like structural work or anything involving hidden services (pipes, cables, joists).

For 2026, typical day rates in the UK run from £180–£240 for general builders in the Midlands and North, up to £280–£380 in London and the South East. If a quote uses day rates, always ask for an estimated total and a maximum cap.

What "provisional sums" really mean

You'll often see line items labelled "PC Sum" or "Provisional Sum." These are placeholder figures for items not yet specified — like tiles you haven't chosen, or a boiler model TBC. They're legitimate, but they must be tracked carefully.

Every provisional sum should be agreed in writing when it's finalised. This is where cost overruns most commonly originate — not because the builder is being dishonest, but because expectations weren't pinned down.

VAT and payment terms

Check whether VAT is included. Most registered builders will add 20% VAT to their quote — if it's not shown, ask. A quote that looks competitive might simply have excluded it.

Payment terms should be staged: typically a deposit of 10–25%, followed by milestone payments tied to completed stages of work. Never pay more than 50% up front, and never pay in full before snagging is complete.

Key takeaways

• Read the scope of works first — vague descriptions protect the builder, not you
• Clarify whether materials are at trade, retail, or marked up
• Prefer fixed-price quotes; if day-rate, insist on a maximum cap
• Track every provisional sum in writing as it gets finalised
• Never pay more than 50% up front, and nothing final until snagging is signed off

On TradeMatch, all quotes are standardised into a consistent format so comparisons are always apples-to-apples. Get your free quotes here.