Haslingden, Lancashire
Two-storey rear extension in Haslingden
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We design, get the approvals for and build two-storey rear extensions in Haslingden and the surrounding area, with one contract from the first survey to building control sign-off.
Haslingden is covered from our Lancashire round, including BB4. Two-storey rear extensions suit semi-detached houses in Haslingden 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 Haslingden?
Guide prices for a two-storey rear extension in Haslingden 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 |
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 Haslingden?
The planning route for a two-storey rear extension in Haslingden 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 Haslingden like to extend?
Haslingden 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 Haslingden comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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 Haslingden
Close by, we work in Rawtenstall, about 1.6 miles away, and Accrington, about 3.8 miles away.
- Two-storey rear extension in Rawtenstall
- Two-storey rear extension in Accrington
- Two-storey rear extension in Ramsbottom
- Two-storey rear extension in Bacup
- Two-storey rear extension in Darwen
Other work in Haslingden:
FAQ
Two-storey rear extension questions in Haslingden
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Do you handle building control in Haslingden?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
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.
What postcode areas do you cover around Haslingden?
Including BB4, and the surrounding Lancashire area.
Do I need planning permission for a rear extension in Haslingden?
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.