Building services in Chippenham
House extensions
- Single-storey extensions
- Double-storey extensions
- Side extensions
- Side return extensions
- Wraparound extensions
- Kitchen extensions
- Orangeries
- Glazed and contemporary extensions
- Porches
Loft conversions
- Dormer loft conversions
- Hip-to-gable loft conversions
- Mansard loft conversions
- Rooflight loft conversions
- Bungalow loft conversions
Garage, basement and barn conversions
New build homes
Renovations and structural work
Design and approvals
Guide prices in Chippenham
| Project | Guide range (inc VAT) |
|---|---|
| Single-storey extensions | £2,000–£2,950 per m² of floor area |
| Double-storey extensions | £1,700–£2,550 per m² of floor area (both floors) |
| Dormer loft conversions | £49,000–£69,500 for a typical rear dormer with en-suite |
| Hip-to-gable loft conversions | £56,000–£79,500 for a hip-to-gable with rear dormer |
| Structural alterations and knock-throughs | £4,500–£9,750 for a typical knock-through with steel beam |
| Orangeries | £2,450–£3,450 per m² of floor area |
Building costs in the South West are close to the UK average, so the figures for Chippenham are close to our national guide.
Planning permission in Chippenham
In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
About building in Chippenham
In parts of the South West, protected landscapes and conservation areas shape what can be built, so materials and roof forms are chosen carefully.
We work across Chippenham and neighbouring areas such as Melksham, Trowbridge and Bath. Postcodes we cover in Chippenham include SN15. Chippenham has a population of around 36,000.
How it works
- 01
Free visit
We look at the property, talk through what you want and measure up. There is no charge and no obligation.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions from homeowners in Chippenham
Do I need planning permission for an extension in Chippenham?
In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
Do you work in Chippenham?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Chippenham, including postcodes SN15.
How much does an extension cost in Chippenham?
A single-storey extension in Chippenham typically costs £2,000–£2,950 per m² of floor area, and a double-storey extension £1,700–£2,550 per m² of floor area (both floors), including VAT.
How much does a loft conversion cost in Chippenham?
A rear dormer loft conversion in Chippenham typically costs £49,000–£69,500 for a typical rear dormer with en-suite, including VAT.
Is the home visit free?
Yes. The first visit to discuss your project and measure up for a quote is free, with no obligation.