Wallington, Greater London
Bungalow rear extension in Wallington
Bungalow rear extension in Wallington: single-storey rear extensions that keep everything on one level. We measure the house, show you what the rules allow, price it in writing and build it.
Wallington and its postcode districts SM1, SM5 and SM6 are part of our Greater London coverage. For bungalows in Greater London, a rear extension is the usual way to add space without adding stairs.
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 Wallington?
In Wallington, our guide for a bungalow rear extension is £2,400–£3,900 per square metre including VAT for a standard specification. 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 Wallington?
Here is how the rules in England apply to a bungalow rear extension in Wallington.
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part is 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. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Wallington like to extend?
Much of Wallington is 1920s and 1930s semis and short terraces with longer gardens than inner London, which suit full-width single-storey rear extensions. Parking suspensions, skip licences and controlled hours on residential streets shape the programme more than the build itself.
How a bungalow rear extension in Wallington comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
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 Wallington
From Wallington, the nearest places we also cover are Carshalton (0.7 miles) and St Helier (1.8 miles).
- Bungalow rear extension in Carshalton
- Bungalow rear extension in St Helier
- Bungalow rear extension in Sutton
- Bungalow rear extension in Belmont
- Bungalow rear extension in South Croydon
Other work in Wallington:
FAQ
Bungalow rear extension questions in Wallington
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
Do I need to move out?
Rarely; the opening into the bungalow is made late in the build.
What postcode areas do you cover around Wallington?
Including SM1, SM5 and SM6, and the surrounding Greater London area.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.