Building services in March
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 March
| Project | Guide range (inc VAT) |
|---|---|
| Single-storey extensions | £2,050–£3,050 per m² of floor area |
| Kitchen extensions | £2,400–£3,600 per m² including a mid-range kitchen |
| Dormer loft conversions | £51,000–£72,000 for a typical rear dormer with en-suite |
| Hip-to-gable loft conversions | £58,500–£82,500 for a hip-to-gable with rear dormer |
| Garage conversions | £19,000–£32,000 for a single integral garage |
| Structural alterations and knock-throughs | £4,750–£10,000 for a typical knock-through with steel beam |
Prices across the East of England are typically 6% above the UK average for this kind of work, which is reflected in the range for March.
Planning permission in March
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 March
Many towns in the East of England have estates built since the 1970s, where garage conversions and rear extensions are popular.
March sits in Cambridgeshire, about 24 miles north of Cambridge. We cover the whole of March, including postcodes PE15. March has a population of around 21,000.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Design and fixed quote
Drawings, structural calculations and an itemised, fixed price for the agreed specification.
- 03
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 04
Construction and completion
We build, put right any snags and hand over the building control certificate.
Questions from homeowners in March
How much does an extension cost in March?
A single-storey extension in March typically costs £2,050–£3,050 per m² of floor area, and a double-storey extension £1,750–£2,650 per m² of floor area (both floors), 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.
Do you work in March?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across March, including postcodes PE15.
Do I need planning permission for an extension in March?
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.
How much does a loft conversion cost in March?
A rear dormer loft conversion in March typically costs £51,000–£72,000 for a typical rear dormer with en-suite, including VAT.