House extensions in Palmers Green
We design and build house extensions for homes in Palmers Green and the surrounding Greater London area, with guide prices adjusted for the region.
- Postcode districtsN11, N13, N14, N21, N22
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
What works best for Palmers Green 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.
The types we would usually look at first for a home in Palmers Green are glass box extensions, kitchen extensions and wraparound extensions, depending on the garden and how the house is laid out.
Where we work near Palmers Green
Across N11, N13, N14, N21, N22, we can visit, measure and advise. We also work in nearby Wood Green (1 mile), Tottenham (2 miles), Friern Barnet (2 miles), Edmonton (2 miles), Muswell Hill (2 miles). Just over the Hertfordshire border, Potters Bar is about 6 miles away.
Planning rules in Palmers Green
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).
Palmers Green extension prices at a glance
We publish guide prices so you can budget before anyone visits. For Palmers Green they are adjusted by ×1.3, the factor we use across London.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Orangery extensions | 16 m² | £58,000 – £73,000 |
| Side return extensions | 11 m² | £34,000 – £43,000 |
| Kitchen extensions | 20 m² | £54,500 – £69,000 |
| Single-storey rear extensions | 20 m² | £53,000 – £68,000 |
| Extensions over a garage | 12 m² | £32,500 – £42,500 |
| Conservatory replacement extensions | 14 m² | £39,000 – £50,500 |
Choose an extension type
- Pitched roof extensions · from £28,500
- Side extensions · from £28,500
- Planning permission for extensions · from £450
- Timber frame extensions · from £27,000
- Single-storey rear extensions · from £27,000
- Porch extensions · from £5,200
- Orangery extensions · from £39,000
- Building regulations for extensions · from £1,150
- Double-storey extensions · from £49,000
- Home office extensions · from £20,500
- Bedroom extensions · from £33,500
- Annexe extensions · from £71,500
- Flat roof extensions · from £27,000
- Utility and boot room extensions · from £18,000
- Glass box extensions · from £39,000
- Kitchen extensions · from £35,000
- Extensions over a garage · from £31,000
- Conservatory replacement extensions · from £26,000
- Extension plans and drawings · from £1,550
- Wraparound extensions · from £46,500
- Bungalow extensions · from £34,000
- Side return extensions · from £23,000
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Palmers Green
How much does an extension cost in Palmers Green?
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 Palmers Green?
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.
Do I need planning permission for an extension in Palmers Green?
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.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Book a free site visit in Palmers Green
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.