SORN for project cars and restorations

Restorations rarely finish on time. SORN keeps a project legal and cheap while it's in bits. Here's how to handle it from purchase to first drive.

Checked against GOV.UK guidance · Updated 25 October 2026

Buying a project

• The seller's SORN doesn't transfer to you. Make your own SORN as soon as you become the keeper (buying a SORN car).
• Collect it on a trailer unless it's taxed, insured and has a valid MOT (or you're driving to a pre-booked MOT).
• Check its MOT history before you pay. Failures and advisories show where the rot is. Full MOT history check.

While it's in bits

• A SORN has no expiry. You don't need to renew it, even if the job takes five years.
• The car must stay off the public road: garage, drive, unit or private land.
• Consider laid-up insurance. A half-finished restoration is still worth stealing and can be destroyed by a garage fire.
• If you're breaking another car for parts, that donor car needs its own SORN too.

Modifications and identity

Big changes (a different engine, chassis or body) can affect the vehicle's identity and registration. If you plan major modifications, read GOV.UK's vehicle registration guidance first. It can also affect whether a classic qualifies as historic.

Will it become "historic" while you work?

Vehicles built before 1 January 1986 can stop paying vehicle tax from 1 April 2026 if taxed in the historic class, and vehicles first registered more than 40 years ago may be exempt from MOT if not substantially changed (GOV.UK historic vehicles). See classic cars and SORN.

Getting it back on the road

1. Get it MOT'd, unless exempt. You can drive to a pre-booked test, insured.
2. Insure it (agreed-value classic policies are common).
3. Tax it. The SORN ends automatically (tax after SORN).
4. Keep receipts and photos of the restoration. They help with insurance valuation and resale.