Kensington, Merseyside
Two-storey rear extension in Kensington
Two-storey rear extension in Kensington: a larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We measure the house, show you what the rules allow, price it in writing and build it.
Kensington sits in Merseyside, with postcode districts including L1, L6 and L7. Two-storey rear extensions suit semi-detached houses in Kensington best, where the extra bedroom matters as much as the bigger kitchen.
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 Kensington?
Guide prices for a two-storey rear extension in Kensington start from our North West England rate of £1,690–£2,540 per square metre, including VAT. North West prices sit below our West Midlands baseline; access on terraced streets is the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £51,000–£76,000 |
| 4 m × 6 m footprint, two floors (48 m²) | £81,000–£122,000 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a two-storey rear extension in Kensington?
The planning route for a two-storey rear extension in Kensington is set by England's householder rules and your council.
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. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Kensington like to extend?
Kensington has long runs of terraced houses with back yards and alleys, plus 1930s semis further out. Yard extensions on terraces are often single-storey and close to both boundaries.
How a two-storey rear extension in Kensington 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Two-storey rear extensions near Kensington
We also build two-storey rear extensions in nearby Liverpool (1.0 miles) and Wavertree (1.7 miles).
- Two-storey rear extension in Liverpool
- Two-storey rear extension in Wavertree
- Two-storey rear extension in Old Swan
- Two-storey rear extension in Kirkdale
- Two-storey rear extension in Dingle
Other work in Kensington:
FAQ
Two-storey rear extension questions in Kensington
How long does a rear extension take to build in Kensington?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do I need planning permission for a rear extension in Kensington?
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.
Will we need to move out?
Rarely. The first-floor opening is made late in the job and sealed with temporary screens.
Do you handle building control in Kensington?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Is the site visit in Kensington free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Can you match the brick or stone on my Kensington house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.