Clayton-le-Woods, Lancashire
Single-storey rear extension in Clayton-le-Woods
Thinking about a single-storey rear extension in Clayton-le-Woods? Ground-floor space across the back of the house, usually for a kitchen, dining or family room. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
We cover Clayton-le-Woods (PR5, PR25 and PR26) as part of our Lancashire work. A depth of 3 to 4 metres keeps many single-storey rear extensions in Clayton-le-Woods within permitted development, subject to the house's planning history.
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 Clayton-le-Woods?
In Clayton-le-Woods, our guide for a single-storey rear extension is £1,790–£2,910 per square metre including VAT for a 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 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 |
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 single-storey rear extension in Clayton-le-Woods?
Whether your single-storey rear extension in Clayton-le-Woods needs a planning application depends on its size, your house and any local restrictions.
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part is within 2 metres of a boundary.
England also has the larger home extension route: a single-storey rear extension of up to 6 metres on an attached house or 8 metres on a detached house, after prior approval from the council. The council notifies your neighbours and has 42 days to decide; the fee is £249 (£310 for applications made from 8 December 2026). The route is not available on designated land such as conservation areas.
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 Clayton-le-Woods like to extend?
Stone and brick terraces are common around Clayton-le-Woods. Where houses back onto a ginnel or alley, deliveries can come in from the rear, which makes the build tidier. A single-storey rear extension in Clayton-le-Woods is mostly built from the garden side, so the house stays usable for most of the job.
How a single-storey rear extension in Clayton-le-Woods 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
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.
Single-storey rear extensions near Clayton-le-Woods
We also build single-storey rear extensions in nearby Leyland (0.8 miles) and Chorley (3.9 miles).
- Single-storey rear extension in Leyland
- Single-storey rear extension in Chorley
- Single-storey rear extension in Preston
- Single-storey rear extension in Horwich
- Single-storey rear extension in Darwen
Other work in Clayton-le-Woods:
FAQ
Single-storey rear extension questions in Clayton-le-Woods
What postcode areas do you cover around Clayton-le-Woods?
Including PR5, PR25 and PR26, and the surrounding Lancashire area.
How long does a rear extension take to build in Clayton-le-Woods?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Does it add value to the house?
Nationwide's October 2025 house price research found that a 10% increase in floor area is linked to about 5% higher value on average. It is a guide, not a promise; local agents can tell you what extended homes on your street sell for.
How much does a single-storey rear extension cost in Clayton-le-Woods?
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 get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Do I need planning permission for a rear extension in Clayton-le-Woods?
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.