The vans stop coming. Calls go to voicemail, the WhatsApps show one grey tick, and your house is a shell with scaffolding on the meter. Abandonment is the most stressful failure mode in domestic building, and the one where acting in the right order most affects how much money you see again.
First 48 hours: stabilise
- Secure the site. Lock it, weatherproof anything exposed (a £60 tarpaulin now saves a £6,000 ceiling later), and check your home insurer knows works are in progress, unoccupied, open-to-weather properties are where cover gets argued.
- Photograph everything, room by room, including materials and tools left on site. This freeze-frame of “state at abandonment” underpins every later claim.
- Stop all payments. Cancel anything scheduled. Money already ahead of the work is the loss; don’t add to it.
- Write down the timeline, last day attended, last contact, what was said.
Don’t touch their tools and materials beyond moving them safely aside: they remain the builder’s property, and “they held my tools hostage / they binned my kit” subplots help nobody.
Establish the facts: gone, or gone under?
Check Companies House and ask around suppliers. The response differs:
- Company in insolvency/dissolved, contractual remedies are mostly theatre now. Your money comes back, if at all, via Section 75 on card-paid sums, any insurance-backed guarantee, and the value of not having paid ahead. Register as a creditor, then focus forward.
- Still trading, just vanished from your job, the full playbook below applies, and your leverage is real.
The formal notice: the step people skip
Before you engage anyone else, write to the builder:
“No work has been carried out since [date] and you have not responded since [date]. Unless you return and resume diligent progress within 7 days, I will treat the contract as ended by your abandonment, complete the works with another contractor, and hold you liable for the additional cost.”
This matters because a contract doesn’t just evaporate, ending it prematurely or informally lets the builder later argue you repudiated and owe them for lost profit. Most written contracts (including JCT forms) have a termination procedure with notice periods: follow it to the letter. Seven days of patience here buys you a clean legal position for everything after.
Completing the works: and building the claim
When the deadline passes:
- Document the valuation gap. Have the remaining works priced by two or three contractors against the original scope. The maths of your claim is: (reasonable cost to complete + rectifying defects) − (unpaid balance of the original price).
- Expect a premium. Nobody prices half-finished, someone-else’s-work jobs keenly, 10–25% over pro-rata is normal and claimable, because the abandonment caused it. An independent surveyor’s report on the state and value of work at abandonment is worth its fee on bigger jobs.
- Contract the new builder properly, a fresh scope and contract, not an inherited handshake. Building control carries on: notify them of the change and keep the inspection trail intact.
- Claim the difference through the standard escalation: letter before action with the arithmetic attached, then small claims or fast track as the size dictates.
The pattern to remember
Everything in this guide is arithmetic on one number: how far ahead of the work your money was. Paid in arrears against milestones, abandonment is a bad month; paid ahead, it’s a five-figure loss. That discipline, plus a contract with a termination clause, is the whole insurance policy.
This guide is general information for homeowners in England and Wales, not legal advice.
