Beckenham, Greater London
Terraced house rear extension in Beckenham
Rear and side return extensions for terraces, with access through the house and two neighbours. We design, get the approvals for and build rear extensions for terraced houses in Beckenham and the surrounding area, with one contract from the first survey to building control sign-off.
We cover Beckenham (BR3, SE20 and SE26) as part of our Greater London work. Terraced streets make up much of the housing in parts of Greater London, and most rear extensions here go in without side access.
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 terraced house rear extension cost in Beckenham?
In Beckenham, our guide for a terraced house rear extension is £2,660–£4,290 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 × 4.5 m deep (13.5 m²) | £36,000–£58,000 |
| 3 m wide × 6 m deep (18 m²) | £48,000–£77,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a terraced house rear extension in Beckenham?
Whether your terraced house rear extension in Beckenham needs a planning application depends on its size, your house and any local restrictions.
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.
The Party Wall etc. Act 1996 applies in England: you serve notice two months before work to a shared wall, and one month before digging foundations within 3 metres (or 6 metres for deeper foundations) of a neighbour's building. Neighbours can agree in writing; if they dissent, surveyors agree an award.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in Beckenham like to extend?
Much of Beckenham 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 terraced house rear extension in Beckenham 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Terraced house rear extensions near Beckenham
Neighbouring places we cover include Perry Vale (2.1 miles) and South Norwood (2.2 miles).
- Terraced house rear extension in Perry Vale
- Terraced house rear extension in South Norwood
- Terraced house rear extension in Shirley
- Terraced house rear extension in Crystal Palace
- Terraced house rear extension in Catford
Other work in Beckenham:
FAQ
Terraced house rear extension questions in Beckenham
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 planning permission for a rear extension in Beckenham?
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.
Can a terrace have a two-storey rear extension?
It is possible but harder to get through planning because of the effect on both neighbours.
Is the site visit in Beckenham free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do you handle building control in Beckenham?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
How much does a terraced house rear extension cost in Beckenham?
As a guide, £2,660–£4,290 per square metre including VAT for a standard specification. For example, 3 m wide × 4.5 m deep (13.5 m²): about £36,000–£58,000 at that rate. Your written price follows the survey.