Extensions in Cricklewood: design, planning and build
Every type of house extension in Cricklewood, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsNW2, NW3, NW4, NW6, NW10, NW11
- Price regionLondon (×1.3)
- Planning rulesEngland
- Site visitFree, no obligation
Guide prices for Cricklewood
Use these Cricklewood guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Single-storey rear extensions | 20 m² | £53,000 – £68,000 |
| Wraparound extensions | 25 m² | £74,500 – £94,500 |
| 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 |
Choosing the right extension in Cricklewood
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 Cricklewood are wraparound extensions, glass box extensions and kitchen extensions, depending on the garden and how the house is laid out.
Areas we cover around Cricklewood
We cover Cricklewood and the postcode districts NW2, NW3, NW4, NW6, NW10, NW11. We also work in nearby Kilburn (1 mile), Golders Green (2 miles), Willesden (2 miles), Harlesden (2 miles), Chalk Farm (3 miles). Just over the Hertfordshire border, Borehamwood is about 7 miles away.
Planning and building control in Cricklewood
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).
Extension types and starting prices
- Annexe extensions · from £71,500
- Glass box extensions · from £39,000
- Conservatory replacement extensions · from £26,000
- Single-storey rear extensions · from £27,000
- Building regulations for extensions · from £1,150
- Pitched roof extensions · from £28,500
- Bungalow extensions · from £34,000
- Timber frame extensions · from £27,000
- Porch extensions · from £5,200
- Double-storey extensions · from £49,000
- Side extensions · from £28,500
- Flat roof extensions · from £27,000
- Orangery extensions · from £39,000
- Home office extensions · from £20,500
- Extensions over a garage · from £31,000
- Wraparound extensions · from £46,500
- Kitchen extensions · from £35,000
- Bedroom extensions · from £33,500
- Planning permission for extensions · from £450
- Side return extensions · from £23,000
- Extension plans and drawings · from £1,550
- Utility and boot room extensions · from £18,000
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
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Cricklewood
How much does an extension cost in Cricklewood?
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 I need planning permission for an extension in Cricklewood?
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.
How long does an extension take in Cricklewood?
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 you cover all of Cricklewood?
Yes, including the surrounding parts of Greater London. Site visits are free and there is no obligation.
Book a free site visit in Cricklewood
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.