Kirkdale, Merseyside
Single-storey rear extension in Kirkdale
Ground-floor space across the back of the house, usually for a kitchen, dining or family room. If you live in Kirkdale and want to know what a single-storey rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Kirkdale is covered from our Merseyside round, including L4, L5 and L6. A single-storey rear extension in Kirkdale is mostly built from the garden side, so the house stays usable for most of the job.
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 single-storey rear extension cost in Kirkdale?
Guide prices for a single-storey rear extension in Kirkdale start from our North West England rate of £1,790–£2,910 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 wide × 4 m deep (12 m²) | £21,500–£35,000 |
| 4 m wide × 5 m deep (20 m²) | £35,500–£58,500 |
| 4 m wide × 6 m deep (24 m²) | £43,000–£70,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a single-storey rear extension in Kirkdale?
The planning route for a single-storey rear extension in Kirkdale is set by England's householder rules and your council.
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is within 2 metres of a boundary.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Kirkdale like to extend?
Stone and brick terraces are common around Kirkdale. Where houses back onto a ginnel or alley, deliveries can come in from the rear, which makes the build tidier.
How a single-storey rear extension in Kirkdale 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.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Single-storey rear extensions near Kirkdale
From Kirkdale, the nearest places we also cover are Liverpool (1.6 miles) and Kensington (2.0 miles).
- Single-storey rear extension in Liverpool
- Single-storey rear extension in Kensington
- Single-storey rear extension in Norris Green
- Single-storey rear extension in Litherland
- Single-storey rear extension in West Derby
Other work in Kirkdale:
FAQ
Single-storey rear extension questions in Kirkdale
How much does a single-storey rear extension cost in Kirkdale?
As a guide, £1,790–£2,910 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £21,500–£35,000 at that rate. Your written price follows the survey.
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.
Is a flat roof or a pitched roof better?
A warm flat roof keeps the extension low under first-floor windows and suits a roof lantern; a pitched or lean-to roof gives a vaulted ceiling. Both last for decades when built properly.
Do you handle building control in Kirkdale?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
What postcode areas do you cover around Kirkdale?
Including L4, L5 and L6, and the surrounding Merseyside area.
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.