Home extensions in Notting Hill
From a small utility to a two-storey addition, we take on house extensions throughout Notting Hill, starting with a free visit and a planning check.
- Postcode districtsW8, W9, W10, W11, W12, W14
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
Popular extension prices in Notting Hill
Every figure below is a guide for Notting Hill, adjusted for London build costs (×1.3) and including VAT. Design and council fees are shown separately on each page.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Extensions over a garage | 12 m² | £32,500 – £42,500 |
| Side return extensions | 11 m² | £34,000 – £43,000 |
| Single-storey rear extensions | 20 m² | £53,000 – £68,000 |
| Double-storey extensions | 32 m² | £74,500 – £98,000 |
| Conservatory replacement extensions | 14 m² | £39,000 – £50,500 |
Planning rules in Notting Hill
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 two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
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).
Where we work near Notting Hill
Site visits are available across Notting Hill (W8, W9, W10, W11, W12, W14). Neighbouring towns we cover include Shepherds Bush (1 mile), Willesden (2 miles), Fulham (2 miles), Chelsea (2 miles), Chiswick (3 miles). Just over the Surrey border, East Molesey is about 10 miles away.
What works best for Notting Hill houses?
In London, space is at a premium and gardens are often short, so side returns, wraparounds and carefully planned rear extensions tend to make the most of every metre.
The types we would usually look at first for a home in Notting Hill are glass box extensions, wraparound extensions and kitchen extensions, depending on the garden and how the house is laid out.
Every extension type in Notting Hill
- Wraparound extensions · from £46,500
- Double-storey extensions · from £49,000
- Bungalow extensions · from £34,000
- Porch extensions · from £5,200
- Conservatory replacement extensions · from £26,000
- Extensions over a garage · from £31,000
- Single-storey rear extensions · from £27,000
- Kitchen extensions · from £35,000
- Pitched roof extensions · from £28,500
- Side return extensions · from £23,000
- Utility and boot room extensions · from £18,000
- Side extensions · from £28,500
- Building regulations for extensions · from £1,150
- Annexe extensions · from £71,500
- Extension plans and drawings · from £1,550
- Bedroom extensions · from £33,500
- Timber frame extensions · from £27,000
- Flat roof extensions · from £27,000
- Glass box extensions · from £39,000
- Home office extensions · from £20,500
- Orangery extensions · from £39,000
- Planning permission for extensions · from £450
Free site visit
We visit your Notting Hill home, measure up, talk through what you want and check the planning position.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
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 Notting Hill
How much does an extension cost in Notting Hill?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Notting Hill, and the guide-price tool gives a range for your own size and finish in about a minute.
Do you cover all of Notting Hill?
Yes, including the surrounding parts of Greater London. Site visits are free and there is no obligation.
How long does an extension take in Notting Hill?
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.
Book a free site visit in Notting Hill
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.