How to Brief Your Builder: A Step-by-Step Guide

April 2026·7 min read

The quality of your builder's quote — and ultimately your finished project — depends heavily on how clearly you communicate what you want. A well-prepared brief saves time, reduces misunderstandings, and helps you get like-for-like quotes when comparing builders. Here's how to do it properly.

Why a brief matters

Without a clear brief, two builders can quote for completely different projects — and you won't know why one is £20,000 cheaper than the other. A good brief means everyone is pricing the same thing.

Step 1

Define What You Want to Achieve

Start with the outcome, not the specification. What problem are you solving? Common goals include:

More kitchen space for family cooking and entertaining

An extra bedroom for a growing family

A home office separate from the main living area

A ground-floor bedroom and bathroom for accessibility

More natural light and a connection to the garden

Tip: Write down your goal in one sentence: 'We want to create an open-plan kitchen-diner that connects to the garden.' This keeps everyone focused on what matters.

Step 2

Describe the Scope of Work

Be as specific as you can about what you want built. Include:

The type of project (single storey rear extension, loft conversion, garage conversion, etc.)

Approximate size if you have one in mind (e.g. 5m x 4m rear extension)

Which rooms will be affected or created

Whether you need structural alterations (e.g. removing a wall)

Any specific features you want (bifolding doors, roof lantern, en-suite, etc.)

Step 3

Share Any Drawings or Plans You Have

If you already have architectural drawings, share them with every builder you approach. This ensures everyone quotes from the same specification. If you don't have drawings yet:

Sketch a rough floor plan showing what you want — even a hand-drawn sketch helps

Take photos of the area to be built on (garden, garage, loft)

Note the approximate dimensions of the space

Mention any planning applications already submitted or approved

Tip: You don't need professional drawings to get a ballpark quote. Most builders — including us — can give you an indicative price from a site visit and a description of what you want.

Step 4

State Your Budget Range

Many homeowners are reluctant to share their budget, but it actually helps you. If your budget is £60,000 and a builder knows that, they can tell you honestly what's achievable — rather than quoting for a £90,000 project you can't afford. Being upfront about budget:

Helps builders tailor their specification to what you can afford

Saves time on both sides

Allows builders to suggest value-engineering options

Prevents you falling in love with a quote you can't fund

Tip: If you're not sure of your budget, use our Cost Calculator to get a ballpark figure before approaching builders.

Step 5

Specify Your Timescales

Tell builders when you want to start and when you need the project finished. Be realistic — good builders are often booked 6–12 weeks in advance. Key dates to mention:

Earliest possible start date

Any hard deadlines (e.g. before a baby arrives, before Christmas)

Whether you're flexible on timing

Whether you'll be living in the property during the build

Step 6

List What's Included — and What Isn't

Clarify what you expect the builder to supply and what you'll handle yourself. Common areas of confusion include:

Kitchen units and appliances — supplied by you or the builder?

Bathroom sanitaryware — your choice or theirs?

Floor finishes — tiles, wood, carpet — included or separate?

Decoration — do you want the builder to paint, or will you do it yourself?

External works — patio, landscaping, driveway — in or out of scope?

Tip: The clearer you are about inclusions and exclusions, the more accurate and comparable your quotes will be.

Step 7

Describe Your Property and Access

Give builders the context they need to price accurately:

Property type (detached, semi-detached, terraced, bungalow)

Age and construction type (Victorian brick, 1960s cavity wall, timber frame)

Access to the rear — wide side access, narrow gate, or no access?

Parking availability for a skip and materials deliveries

Any known issues (subsidence, asbestos, poor drainage)

Step 8

Ask the Right Questions

A site visit is a two-way conversation. Come prepared with questions for the builder:

What's included in your quote and what's excluded?

Will you handle planning permission and Building Regulations?

Who will be my day-to-day point of contact?

What's your payment schedule?

Can I see examples of similar projects you've completed?

What's your availability and estimated start date?

Your Brief at a Glance

What you want to achieveOne clear sentence

Scope of workType, size, features

Drawings or sketchesShare what you have

Budget rangeBe honest — it helps

TimescalesStart date, any deadlines

Inclusions / exclusionsKitchen, bathrooms, decoration, landscaping

Property detailsType, age, access

Questions for the builderPrepared in advance

How We Make It Easy

At Paul Bailey Construction, we guide you through the briefing process at your free site visit. You don't need to arrive with a perfectly prepared document — just a clear idea of what you want to achieve and a rough sense of your budget. We'll ask the right questions, measure up, and provide a detailed, no-obligation quote within 5–7 working days.

Ready to Brief Us?

Book a free site visit and we'll help you shape your project from the very first conversation.

Book a Free Site Visit Call 01277 532991