Cranford, Greater London
Bungalow rear extension in Cranford
We plan and build rear extensions for bungalows for homeowners in Cranford. Single-storey rear extensions that keep everything on one level. Start with a free site visit, then a written price once the design is agreed.
We cover Cranford (TW4, TW5 and TW6) as part of our Greater London work. For Cranford bungalows we design the roof first, because the low eaves decide the height of the new room.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a bungalow rear extension cost in Cranford?
Guide prices for a bungalow rear extension in Cranford start from our London rate of £2,400–£3,900 per square metre, including VAT. London prices sit at the top of our range because of labour rates, access through the house, parking suspensions and skip licences.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £29,000–£47,000 |
| 4 m wide × 6 m deep (24 m²) | £57,500–£93,500 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a bungalow rear extension in Cranford?
Planning for a bungalow rear extension in Cranford follows the English householder rules.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres within 2 metres of a boundary.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Cranford like to extend?
Cranford is mostly 1930s semis, short terraces and post-war houses, so full-width single-storey and two-storey rear extensions are realistic on many plots. Some later estates had permitted development rights removed by condition, so we check the planning history first.
How a bungalow rear extension in Cranford comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Bungalow rear extensions near Cranford
Neighbouring places we cover include Heston (1.7 miles) and Feltham (2.1 miles).
- Bungalow rear extension in Heston
- Bungalow rear extension in Feltham
- Bungalow rear extension in Hounslow
- Bungalow rear extension in Osterley
- Bungalow rear extension in Hayes
Other work in Cranford:
FAQ
Bungalow rear extension questions in Cranford
How much does a bungalow rear extension cost in Cranford?
As a guide, £2,400–£3,900 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £29,000–£47,000 at that rate. Your written price follows the survey.
What postcode areas do you cover around Cranford?
Including TW4, TW5 and TW6, and the surrounding Greater London area.
Can a bungalow extension be fully accessible?
Yes: level thresholds, wider doors and a wet room are straightforward to design in.
Is the site visit in Cranford free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do you handle building control in Cranford?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Do I need planning permission for a rear extension in Cranford?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.