Extending your home in South Norwood
Looking to extend your home in South Norwood? Start here: extension types, guide prices for South Norwood, the planning rules that apply and how a project runs.
- Postcode districtsCR7, SE19, SE20, SE25
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
Popular extension prices in South Norwood
We publish guide prices so you can budget before anyone visits. For South Norwood they are adjusted by ×1.3, the factor we use across London.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Double-storey extensions | 32 m² | £74,500 – £98,000 |
| Extensions over a garage | 12 m² | £32,500 – £42,500 |
| Wraparound extensions | 25 m² | £74,500 – £94,500 |
| Orangery extensions | 16 m² | £58,000 – £73,000 |
| Side return extensions | 11 m² | £34,000 – £43,000 |
| Conservatory replacement extensions | 14 m² | £39,000 – £50,500 |
| Kitchen extensions | 20 m² | £54,500 – £69,000 |
Where we work near South Norwood
Site visits are available across South Norwood (CR7, SE19, SE20, SE25). We also work in nearby Upper Norwood (1 mile), Croydon (2 miles), Norbury (2 miles), Beckenham (2 miles), South Croydon (3 miles). Banstead, in Surrey, is roughly 8 miles from South Norwood and also on our list.
Planning and building control in South Norwood
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a single-storey side extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a householder planning application.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
What works best for South Norwood houses?
Across London, terraced houses with narrow side returns and tight access are the norm, which shapes everything from party wall notices to how materials reach the back garden.
Start by comparing side return extensions, kitchen extensions and glass box extensions: between them they cover most of the layouts we see requested for houses like these.
Extension types and starting prices
- Double-storey extensions · from £49,000
- Single-storey rear extensions · from £27,000
- Planning permission for extensions · from £450
- Side extensions · from £28,500
- Porch extensions · from £5,200
- Bungalow extensions · from £34,000
- Glass box extensions · from £39,000
- Wraparound extensions · from £46,500
- Bedroom extensions · from £33,500
- Extension plans and drawings · from £1,550
- Conservatory replacement extensions · from £26,000
- Flat roof extensions · from £27,000
- Utility and boot room extensions · from £18,000
- Pitched roof extensions · from £28,500
- Extensions over a garage · from £31,000
- Timber frame extensions · from £27,000
- Orangery extensions · from £39,000
- Annexe extensions · from £71,500
- Building regulations for extensions · from £1,150
- Kitchen extensions · from £35,000
- Home office extensions · from £20,500
- Side return extensions · from £23,000
Free site visit
We visit your South Norwood home, measure up, talk through what you want and check the planning position.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions about extensions in South Norwood
How much does an extension cost in South Norwood?
Using our London factor (×1.3), a standard-spec single-storey extension of 20 m² is a guide £53,000 to £68,000 including VAT, and a 32 m² two-storey extension £74,500 to £98,000. Your written price follows the survey.
How long does an extension take in South Norwood?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for South Norwood, and the guide-price tool gives a range for your own size and finish in about a minute.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Do I need planning permission for an extension in South Norwood?
Not always. It depends on the size, position and your property's history. Many single-storey rear extensions in England are permitted development or can use prior approval.
Book a free site visit in South Norwood
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.