Norris Green, Merseyside
Two-storey rear extension in Norris Green
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. If you live in Norris Green 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.
Norris Green and its postcode districts L9, L11 and L12 are part of our Merseyside coverage. Two-storey rear extensions suit semi-detached houses in Norris Green 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 Norris Green?
For Norris Green we work from the North West England rate: £1,690–£2,540 per square metre of new floor, including VAT, standard specification. 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 Norris Green?
Whether your two-storey rear extension in Norris Green needs a planning application depends on its size, your house and any local restrictions.
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 Norris Green like to extend?
Norris Green 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 Norris Green comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
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 Norris Green
Close by, we work in Croxteth, about 0.8 miles away, and West Derby, about 1.0 miles away.
- Two-storey rear extension in Croxteth
- Two-storey rear extension in West Derby
- Two-storey rear extension in Fazakerley
- Two-storey rear extension in Old Swan
- Two-storey rear extension in Knotty Ash
Other work in Norris Green:
FAQ
Two-storey rear extension questions in Norris Green
What postcode areas do you cover around Norris Green?
Including L9, L11 and L12, and the surrounding Merseyside area.
Can you match the brick or stone on my Norris Green 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.
How much does a two-storey rear extension cost in Norris Green?
As a guide, £1,690–£2,540 per square metre including VAT for a standard specification. For example, 3 m × 5 m footprint, two floors (30 m²): about £51,000–£76,000 at that rate. Your written price follows the survey.
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 I need planning permission for a rear extension in Norris Green?
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.