# The Builder's Brief UK

> Practical UK homeowner checklists, calculators, budget planners and plain-English guides for comparing builder quotes and planning renovations.

Canonical site: https://buildersbrief.co.uk/
Language and market: English (United Kingdom); services and guidance are for UK homeowners.
Founder and author: Karl Newton, a working UK tradesman at K N Construction in Haverhill, Suffolk.
Commercial model: the free checklist and calculators are free; paid packs are one-off digital purchases. Paddle is the Merchant of Record.
Last reviewed: 2026-08-23.

## Primary pages

- [Home](https://buildersbrief.co.uk/): Overview of packs, tools and homeowner guidance.
- [All homeowner packs](https://buildersbrief.co.uk/packs): Compare the four paid/free digital resources.
- [About Karl Newton and The Builder's Brief UK](https://buildersbrief.co.uk/about): First-hand trade experience and editorial purpose.
- [Frequently asked questions](https://buildersbrief.co.uk/faq): Delivery, formats, builder quotes, VAT and refund questions.
- [Contact](https://buildersbrief.co.uk/contact): Contact The Builder's Brief UK.
- [UK homeowner blog](https://buildersbrief.co.uk/blog): All published building and renovation guides.

## Free resources

- [Free Builder Quote Checklist](https://buildersbrief.co.uk/free-builder-quote-checklist): A 10-page printable PDF with scope, VAT, payment, materials, waste, exclusion and red-flag checks.
- [Extension Cost Calculator](https://buildersbrief.co.uk/extension-cost-calculator): Deterministic indicative UK extension build-cost ranges by size, type, region and finish.
- [AI Extension Cost Estimator](https://buildersbrief.co.uk/ai-extension-cost-estimator): Extracts project details from plain English, then uses deterministic rates to calculate an indicative range. It does not produce a quote.
- [Free Homeowner Resources](https://buildersbrief.co.uk/free-homeowner-resources): Hub for all no-cost calculators, checklists and articles.

## Paid digital packs

- [Homeowner Quote Checker Pack](https://buildersbrief.co.uk/homeowner-quote-checker-pack): Detailed workbook for checking and comparing builder quotes.
- [Renovation Budget Planner](https://buildersbrief.co.uk/renovation-budget-planner): Printable workbook and editable spreadsheet for design fees, VAT, payments, variations and contingency.
- [Homeowner Project Prep Pack](https://buildersbrief.co.uk/homeowner-renovation-prep-pack): Briefing and preparation tools to use before builders quote.
- [Complete Homeowner Project Pack](https://buildersbrief.co.uk/complete-homeowner-project-pack): Bundle covering quote comparison, budgeting and project preparation.

## Published guides

- [How to compare builder quotes in the UK](https://buildersbrief.co.uk/blog/how-to-compare-builder-quotes-uk)
- [Why the cheapest builder quote can cost more later](https://buildersbrief.co.uk/blog/why-the-cheapest-builder-quote-can-cost-more-later)
- [What should be included in a patio quote](https://buildersbrief.co.uk/blog/what-should-be-included-in-a-patio-quote)
- [What should be included in an extension quote](https://buildersbrief.co.uk/blog/what-should-be-included-in-an-extension-quote)
- [How to budget for a single-storey extension](https://buildersbrief.co.uk/blog/how-to-budget-for-a-single-storey-extension)
- [Builder payment schedules explained](https://buildersbrief.co.uk/blog/builder-payment-schedules-explained)
- [What are provisional sums in a building quote](https://buildersbrief.co.uk/blog/what-are-provisional-sums-in-a-building-quote)
- [Questions to ask a builder before accepting a quote](https://buildersbrief.co.uk/blog/questions-to-ask-a-builder-before-accepting-a-quote)
- [Planning permission vs building regulations](https://buildersbrief.co.uk/blog/planning-permission-vs-building-regulations)
- [How to prepare for a builder meeting](https://buildersbrief.co.uk/blog/how-to-prepare-for-a-builder-meeting)
- [Common renovation costs homeowners forget](https://buildersbrief.co.uk/blog/common-renovation-costs-homeowners-forget)
- [How to avoid scope creep on a renovation project](https://buildersbrief.co.uk/blog/how-to-avoid-scope-creep-on-a-renovation-project)
- [Snagging checklist for homeowners](https://buildersbrief.co.uk/blog/snagging-checklist-for-homeowners)
- [Choosing a builder in Suffolk, Essex and Cambridgeshire](https://buildersbrief.co.uk/blog/choosing-a-builder-in-suffolk-essex-and-cambridgeshire)
- [Single-storey extension costs in the UK](https://buildersbrief.co.uk/blog/single-storey-extension-costs-uk)

## Policies and limitations

- [Terms of use](https://buildersbrief.co.uk/terms)
- [Privacy policy](https://buildersbrief.co.uk/privacy)
- [Refund policy](https://buildersbrief.co.uk/refunds): Paddle handles change-of-mind requests; The Builder's Brief UK also offers a 14-day technical-issue guarantee for unusable files.
- [Disclaimer](https://buildersbrief.co.uk/disclaimer): General trade guidance only, not legal, financial, architectural, engineering, planning, building-control or quantity-surveying advice.
- [Cookie policy](https://buildersbrief.co.uk/cookies): Optional Google Analytics and Meta Pixel tags load only after active consent when configured.