St Ann's, Greater London
Two-storey rear extension in St Ann's
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. If you live in St Ann's and want to know what a two-storey rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
St Ann's is covered from our Greater London round, including N4, N8 and N15. In St Ann's, a two-storey rear extension is worth comparing with the cost of moving once stamp duty, agents' and legal fees are counted.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a two-storey rear extension cost in St Ann's?
A two-storey rear extension in St Ann's is priced at £2,340–£3,510 per square metre including VAT as a guide, before kitchen fit-out and fees. London prices sit at the top of our range because of labour rates, access through the house, parking suspensions and skip licences.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £70,000–£105,500 |
| 4 m × 6 m footprint, two floors (48 m²) | £112,500–£168,500 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a two-storey rear extension in St Ann's?
Here is how the rules in England apply to a two-storey rear extension in St Ann's.
England's rules allow a rear extension of more than one storey without an application only when it is no deeper than 3 metres and at least 7 metres from the boundary opposite the rear wall, and never on designated land. Most two-storey schemes need householder planning permission.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in St Ann's like to extend?
Period terraces in St Ann's sit alongside flats, and the difference matters: houses usually keep permitted development rights, while flats and maisonettes need planning permission for any rear extension.
How a two-storey rear extension in St Ann's comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Two-storey rear extensions near St Ann's
From St Ann's, the nearest places we also cover are Harringay (0.4 miles) and Seven Sisters (0.6 miles).
- Two-storey rear extension in Harringay
- Two-storey rear extension in Seven Sisters
- Two-storey rear extension in Stroud Green
- Two-storey rear extension in Stamford Hill
- Two-storey rear extension in Hornsey
Other work in St Ann's:
FAQ
Two-storey rear extension questions in St Ann's
What postcode areas do you cover around St Ann's?
Including N4, N8 and N15, and the surrounding Greater London area.
Can you match the brick or stone on my St Ann's house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Will we need to move out?
Rarely. The first-floor opening is made late in the job and sealed with temporary screens.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
Do I need planning permission for a rear extension in St Ann's?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.