A written brief — even a simple one — forces those assumptions into the open before pricing starts, and it's the difference between three quotes you can genuinely put side by side and three quotes that only look comparable because they're all in pounds.
Why a verbal brief produces incomparable quotes
When you describe a project verbally to three different builders on three different site visits, each one hears something slightly different, remembers different details, and fills any gaps with their own default assumptions about spec, finish and what's included.
None of this is dishonest — it's just how verbal information degrades. The fix isn't finding more careful builders, it's giving all of them the same written document to price against.
What to include: the essentials
Start with the basics every quote needs to be based on the same facts: the rooms or areas affected, the intended use of each, any structural changes you're aware you want (a wall removed, an opening formed), and roughly desired timescale.
Photographs of the current state of each area, and a simple sketch or floor plan even if it's hand-drawn, remove a huge amount of ambiguity compared with a description alone.
- Rooms/areas affected and their intended new use
- Known structural changes wanted
- Current photographs of each area
- A rough sketch plan, even hand-drawn
- Desired start date and any hard deadlines
Being specific about finish level
'Nice, quality finish' means something different to every reader. Reference points help enormously: link to specific tiles, taps, kitchen ranges or flooring you like, even if you're not committed to the exact product, so builders are pricing towards a similar price bracket of materials.
If budget is genuinely open at this stage, say so and ask for options at two or three specification levels rather than leaving it unstated and getting back three quotes that assumed three different budgets.
Stating what you want included vs excluded
Decide, and state, whether you want the quote to include design and drawings, planning and building control fees, decoration, floor coverings, and appliances, or whether you're sourcing any of those yourself.
This single step prevents the most common apples-to-oranges comparison problem: one builder quoting a fully finished, decorated, furnished job and another quoting bare construction only, with both numbers looking similar on the page.
Flagging known constraints early
Mention anything that could affect access, timing or approach: shared walls or boundaries, listed status or conservation area, narrow access for materials and skips, whether the property will be occupied during works, and any existing issues you're aware of (damp, previous repairs, known drainage problems).
Builders who know about these constraints up front price them properly; builders who discover them later either raise a variation or, worse, hadn't accounted for them and the job suffers for it.
Using the same brief for every quote you request
Send the identical written brief to every builder you approach, ideally as a single document or email they can refer back to, rather than a slightly different verbal conversation each time.
When quotes come back, if one is unusually different from the others, the brief lets you go back and ask specifically what's included or excluded that accounts for the gap, rather than guessing.
What we do with a brief at the site visit
Send us your brief ahead of a free site visit and we'll use it to structure the visit itself — checking the things it raises, asking about anything it leaves ambiguous, and coming back with a written, itemised quote that responds directly to what you've asked for, with clear exclusions where something sits outside scope.
If your brief is still rough, that's fine too — we're used to helping homeowners firm one up during the visit rather than needing a finished document before we'll engage.
Common questions
Do I need drawings before I can get a brief priced?
No. A clear written description, photographs and a rough sketch are enough for an initial quote. Detailed drawings usually follow once a builder is appointed and the design stage begins properly.
How detailed does a brief need to be for a small job?
Even a small refit benefits from a short written brief covering the room, intended use, rough finish level and anything you want included or excluded — it doesn't need to be lengthy, just specific and written down.
What if I don't know my budget yet?
Say so, and ask for options at a couple of specification levels rather than leaving it unstated. That way you get a useful range rather than three quotes built around three different guessed budgets.
Should I send the same brief to every builder I ask?
Yes — this is the single most useful thing you can do to make quotes comparable. Sending slightly different verbal descriptions to each builder is the main reason quotes end up looking incomparable later.
Can you help me write the brief itself?
Yes. Bring whatever you have — even just a rough idea — to a free site visit and we'll help firm it up into something specific enough to quote against properly.