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Legal Agreements + Credit Checks.
Protect Your Home & Your Money From Cowboy Builders.
Be cautious of builders who demand large deposits, promise quick jobs for cash, or offer to reduce costs for cash payments.
Our service offers critical protection and guidance to help you avoid these risks. With our legally compliant agreements for England and Northern Ireland, you can outline your project’s specifics, timelines, and budget, ensuring accountability and preventing costly mistakes.
Safety and Trust for Every Build
Own the Outcome, Build with Confidence
What If You Took Control?
Cavass is the system we wish every homeowner had before things go wrong — so you can build with confidence, not stress.
We help you take control with contractor checks, written agreements, structured payments, and ongoing support.
Thousands of homeowners lose money each year to bad builders — Cavass exists to change that.
No jargon. No chasing. Just ready-to-use tools that put you in charge.
We help you take control with contractor checks, written agreements, structured payments, and ongoing support.
Thousands of homeowners lose money each year to bad builders — Cavass exists to change that.
No jargon. No chasing. Just ready-to-use tools that put you in charge.
Tried and tested across real projects — Cavass keeps your build on track from day one.
Take Control from the Start
Build Without Fear or Regret
Renovating, extending, or building from scratch?
Cavass gives you the legal protection most homeowners don’t realise they need — until it’s too late.
Cavass gives you the legal protection most homeowners don’t realise they need — until it’s too late.
We help you avoid rogue builders with verified contractor checks, clear written agreements, and staged payment protection.
You stay in control — with confidence, not confusion.
You stay in control — with confidence, not confusion.
Cavass works solely for homeowners.
We’re not a lender. Not a broker. Just your safety net — from day one.
We’re not a lender. Not a broker. Just your safety net — from day one.
How It Works
3-Step Legal Protection for Safe Home Builds
Check Your Builder
Financial checks, quotation agreement, and verification.
Lock in Legal Protection
Payment Agreement + Work Schedule Agreement.
Build with Confidence
Pay only for completed work, stay in full control.
Cavass
3.8
2 Reviews
Aftab Hassan
2025-07-12
Why didn’t this exist years ago?
Why didn’t this exist years ago? Honestly, this is a remarkably simple idea, yet it is so desperately needed. I’ve had bad experiences in the past with builders ghosting me after I've paid them. With Cavass, I had a proper agreement in place and even checked the builder’s background. Just made me feel a lot safer. Can’t believe it’s taken this long for something like this to show up.
Saved me from a nightmare
Saved me from a nightmare I was about to go ahead with a builder, but decided to run a credit check through Cavass just to be safe. Turns out the guy had loads of financial issues and a court judgment against him. I backed out and found someone else. That one check saved me thousands, I’m sure of it.
See Why Homeowners and Builders Trust Cavass
Don’t just take our word for it—read verified reviews on Trustpilot from real customers who’ve protected their projects with Cavass. From avoiding rogue builders to securing fair stage payments, our agreements deliver peace of mind.
get in touch
We Always Do Our Best For You
If you have questions for our experts, just leave a request or contact us by contact phone 0203-376-5055
Protect Your Build - Free Call
Get advice on builder checks & legal protection. Free 15-min consultation.
Build with Confidence
Cavass Build Packs
Legally backed documents and builder check for every type of home project.
Whether you’re planning a kitchen renovation, home extension, loft conversion or full refurbishment, Cavass Care Packs give you the protection and control you need to manage your builder and stay on budget.
What’s Inside a Cavass Care Pack?
Foundation Care Pack
Perfect for early-stage projects or smaller jobs.
- Quotation Agreement (room-by-room breakdown)
- Payment Agreement (linked to weekly walkthroughs)
- 3x Builder Credit Check (soft search, no impact)
- Default & Termination Letter Templates
- Builder Risk Checklist
First Fix Care Pack
Stronger protection with added flexibility and legal cover.
- Everything in the Foundation Pack
- Building Agreement (quality, standards, warranties)
- Confidentiality Agreement
- 5x Builder Credit Check (soft search, no impact)
- Addendum & Amendment Templates
- Discounted Mediation Access
Completion Care Pack
Full legal and financial oversight for complex or funded builds.
- Everything in the First Fix Pack
- VAT & Bank Account Verification
- Ongoing Credit Monitoring (free of charge)
- 8x Builder Credit Check (soft search, no impact)
- Weekly Works Schedule Template
- Optional Lender Compliance Reporting
Get Protected Before You Build
Cavass Care Packs give you legal clarity, builder accountability, and peace of mind from day one.
Need Just One Document?
All Cavass agreements and builder checks are available to buy individually — ideal if you only need one or two to support your current project. Visit our Agreements Page to browse and purchase individual documents.
Breaking new in Construction
Builder in £2m fraud trial ‘spent £28,000 on Rolex’
A builder accused of fraud amounting to more than £2m spent £28,650 on a Rolex watch while being chased for payment by suppliers, a court has heard.
Rogue Suffolk plumber who conned customers out of £30k is jailed
A rogue plumber who endangered vulnerable customers and conned them out of thousands of pounds has been jailed.
Over 125,000 ‘Cowboy Builder’ Complaints Made Since 2019
Over 14,000 cowboy builder complaints made to date in 2022
FOI data reveals a 31 per cent rise in complaints to the Citizens Advice Bureau between 2020 and 2021.Window fitters, kitchen fitters, and general builders among those most likely to be rogue traders
‘I fell for his patter’: how rogue builders left a carer £13,000 out of pocket
The nightmare began with a leaking roof. Andrea Giles* duly sought out a specialist company to repair it. But in the space of a month, Giles, a full-time carer for her disabled husband and two special needs children, had lost almost £13,000 and part of the roof of her home after falling victim to two sets of cowboy builders.
House wall in Oxfordshire collapses during building work
A wall collapsed at a house during nearby building work as householders were abruptly woken up in the early hours by a crashing sound.Residents at a group of converted barns in Worton, near Cassington, were woken at approximately 2am in the morning (Monday October 28).