Covering Maesteg
Alongside Maesteg, we also cover Neath, Bridgend (8 miles to the south-east) and Tonypandy.
Homes in Mid Glamorgan
Welsh homes include long terraces built into hillsides, stone cottages and modern estates, and sloping sites often shape how and where an extension can go.
What is included in a basement conversion in Maesteg?
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.
- Planning and building regulations checks under Welsh rules
- Waterproofing design and installation
- Finished floors, walls and ceilings
How much does a basement conversion cost in Maesteg?
Guide prices for basement and cellar conversions, including VAT where it applies. Your fixed price is confirmed in writing after the survey.
| 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 |
What approvals does a basement conversion need in Wales?
Welsh projects need planning clearance from the council under Welsh rules, building regulations approval under the Welsh approved documents, and party wall notices where the work affects a neighbour’s wall or foundations.
In Wales an existing cellar conversion usually does not need planning permission; new excavation and lightwells may.
What should Maesteg homeowners check first?
- Groundwater levels drive the waterproofing design and cost.
- A pump for the drainage system needs a battery back-up.
How does the project run?
- Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
- Free site visit. We measure up, look at access, drains and the structure, and talk through options and budget.
- Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
- 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
Does a cellar conversion need planning permission?
Usually not if nothing changes outside. New basements and lightwells often do.
How long does it take?
About 6 to 12 weeks for a cellar conversion and 16 to 30 weeks for a new basement.
Can you visit a house in Maesteg 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.
Basement and cellar conversions in nearby towns
- Basement and cellar conversions in Neath
- Basement and cellar conversions in Bridgend
- Basement and cellar conversions in Tonypandy
- Basement and cellar conversions in Porthcawl
Learn more about basement and cellar conversions, or see every project we cover in Maesteg.