Building services in Birmingham
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 Birmingham
| Project | Guide range (inc VAT) |
|---|---|
| Single-storey extensions | £1,900–£2,800 per m² of floor area |
| Double-storey extensions | £1,600–£2,400 per m² of floor area (both floors) |
| Kitchen extensions | £2,200–£3,300 per m² including a mid-range kitchen |
| Hip-to-gable loft conversions | £53,500–£75,500 for a hip-to-gable with rear dormer |
| Structural alterations and knock-throughs | £4,250–£9,250 for a typical knock-through with steel beam |
| Porches | £6,250–£15,500 from a 3 m² porch to a small front extension |
Prices in the West Midlands sit near the national average for this kind of work, and the range for Birmingham reflects that.
Planning permission in Birmingham
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 Birmingham
The West Midlands has large numbers of 1930s semis and Victorian terraces, which suit rear extensions, side extensions and dormer loft conversions.
Projects in Birmingham (B1, B2, B3 and B4) are surveyed in person before we quote, so the price reflects your actual property. Birmingham has a population of around 1,160,000.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions from homeowners in Birmingham
Is the home visit free?
Yes. The first visit to discuss your project and measure up for a quote is free, with no obligation.
How much does an extension cost in Birmingham?
A single-storey extension in Birmingham typically costs £1,900–£2,800 per m² of floor area, and a double-storey extension £1,600–£2,400 per m² of floor area (both floors), including VAT.
How much does a loft conversion cost in Birmingham?
A rear dormer loft conversion in Birmingham typically costs £46,500–£66,000 for a typical rear dormer with en-suite, including VAT.
Do you work in Birmingham?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Birmingham, including postcodes B1, B2, B3 and B4.
Do I need planning permission for an extension in Birmingham?
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.