Covering Tyne and Wear
Our coverage across Tyne and Wear includes Newcastle upon Tyne, Sunderland, South Shields and Gateshead.
Homes in the North East
Housing across the North East ranges from colliery terraces and Tyneside flats to suburban semis and modern estates, each with different options for extending.
What is included in a basement conversion in Tyne and Wear?
Everything below ground depends on keeping water out. We design the waterproofing system (usually a cavity drain membrane with a pump, or tanking) to the relevant British Standard guidance, then add insulation, ventilation, light and an escape route. New basements involve underpinning and a party wall process and are designed with a structural engineer.
- Damp and structural survey
- Waterproofing design and installation
- Finished floors, walls and ceilings
How much should I budget for a basement conversion?
Use these ranges to budget for basement and cellar conversions; the survey turns them into a fixed price for the agreed specification.
| Basement and cellar conversions | Guide price incl. VAT |
|---|---|
| Existing cellar conversion | £1,900 to £3,000 per m² |
| New basement excavation | £4,200 to £6,600 per m² |
How is a basement conversion approved in Tyne and Wear?
English projects need planning clearance from the local council, building regulations sign-off from building control, and party wall notices where the work is on or near a shared boundary. We prepare and manage all three.
Converting an existing cellar with no external changes usually does not need planning permission in England. Digging a new basement or adding a lightwell often does, and many councils have basement policies.
What can affect a basement conversion?
- New basements nearly always involve the Party Wall Act in England and Wales.
- Headroom of about 2.1 m or more is needed, which may mean lowering the floor.
What happens after I enquire?
- Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
- We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
- Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
- Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.
Basement and cellar conversions: common questions
How much does a basement conversion cost?
Converting an existing cellar costs about £1,900 to £3,000 per square metre including VAT. A new excavated basement is around £4,200 to £6,600 per square metre.
How do you keep a basement dry?
With a designed waterproofing system, usually a cavity drain membrane draining to a pump, sometimes combined with tanking.
Can you visit a house in Tyne and Wear to quote?
Yes. After a short call we arrange a site visit to measure up and agree what the design needs to do, then send a written price.
Also covering
- Basement and cellar conversions in Newcastle upon Tyne
- Basement and cellar conversions in Sunderland
- Basement and cellar conversions in South Shields
- Basement and cellar conversions in Gateshead
- Basement and cellar conversions in Washington
- Basement and cellar conversions in Tynemouth
- Basement and cellar conversions in Wallsend
- Basement and cellar conversions in Newburn
- Basement and cellar conversions in North Shields
- Basement and cellar conversions in Whitley Bay
- Basement and cellar conversions in Houghton-le-Spring
- Basement and cellar conversions in Felling
- Basement and cellar conversions in Jarrow
- Basement and cellar conversions in Gosforth
- Basement and cellar conversions in Hebburn
Learn more about basement and cellar conversions, or see every project we cover in Tyne and Wear.