Extending your home in South Croydon
Every type of house extension in South Croydon, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsCR0, CR2, CR7, CR8, CR9, SM6
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
Covering South Croydon and nearby
Across CR0, CR2, CR7, CR8, CR9, SM6, we can visit, measure and advise. We also work in nearby Croydon (1 mile), Purley (2 miles), Wallington (3 miles), South Norwood (3 miles), Carshalton (3 miles). For homes towards Surrey, Caterham is around 6 miles away.
What extensions cost in South Croydon
We publish guide prices so you can budget before anyone visits. For South Croydon they are adjusted by ×1.3, the factor we use across London.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Extensions over a garage | 12 m² | £32,500 – £42,500 |
| Kitchen extensions | 20 m² | £54,500 – £69,000 |
| Orangery extensions | 16 m² | £58,000 – £73,000 |
| Double-storey extensions | 32 m² | £74,500 – £98,000 |
| Side return extensions | 11 m² | £34,000 – £43,000 |
| Wraparound extensions | 25 m² | £74,500 – £94,500 |
Which extension suits a South Croydon home?
London's housing is dominated by Victorian and Edwardian terraces, many with a rear outrigger and a side return, and 1930s semis in the outer boroughs. Conservation areas are common, so the planning check comes first.
The types we would usually look at first for a home in South Croydon are glass box extensions, side return extensions and kitchen extensions, depending on the garden and how the house is laid out.
Planning and building control in South Croydon
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.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
Choose an extension type
- Building regulations for extensions · from £1,150
- Double-storey extensions · from £49,000
- Bedroom extensions · from £33,500
- Porch extensions · from £5,200
- Utility and boot room extensions · from £18,000
- Flat roof extensions · from £27,000
- Annexe extensions · from £71,500
- Single-storey rear extensions · from £27,000
- Extensions over a garage · from £31,000
- Orangery extensions · from £39,000
- Home office extensions · from £20,500
- Glass box extensions · from £39,000
- Conservatory replacement extensions · from £26,000
- Wraparound extensions · from £46,500
- Pitched roof extensions · from £28,500
- Side return extensions · from £23,000
- Side extensions · from £28,500
- Planning permission for extensions · from £450
- Kitchen extensions · from £35,000
- Bungalow extensions · from £34,000
- Timber frame extensions · from £27,000
- Extension plans and drawings · from £1,550
Free site visit
We visit your South Croydon home, measure up, talk through what you want and check the planning position.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
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 Croydon
How much does an extension cost in South Croydon?
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.
Will my neighbours need to be told?
If you apply for planning or prior approval the council notifies them, and in England party wall notices may be needed for work near a shared boundary.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for South Croydon, and the guide-price tool gives a range for your own size and finish in about a minute.
Do I need planning permission for an extension in South Croydon?
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 Croydon
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.