Old Swan, Merseyside
Kitchen-diner rear extension in Old Swan
For homes in Old Swan, a kitchen-diner rear extension is often the simplest way to gain space without moving. An open-plan kitchen, dining and family room that opens straight onto the garden. We take it from survey to completion certificate.
Old Swan is covered from our Merseyside round, including L13, L14 and L15. We usually keep the working kitchen where the old one was and put the dining table in the new space by the doors, which suits most Old Swan homes.
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 kitchen-diner rear extension cost in Old Swan?
A kitchen-diner rear extension in Old Swan is priced at £1,790–£2,910 per square metre including VAT as a guide, before kitchen fit-out and fees. 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 |
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 kitchen-diner rear extension in Old Swan?
The planning route for a kitchen-diner rear extension in Old Swan is set by England's householder rules and your council.
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.
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 Old Swan like to extend?
Stone and brick terraces are common around Old Swan. Where houses back onto a ginnel or alley, deliveries can come in from the rear, which makes the build tidier.
How a kitchen-diner rear extension in Old Swan 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.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Kitchen-diner rear extensions near Old Swan
Close by, we work in Knotty Ash, about 0.5 miles away, and Wavertree, about 1.1 miles away.
- Kitchen-diner rear extension in Knotty Ash
- Kitchen-diner rear extension in Wavertree
- Kitchen-diner rear extension in Childwall
- Kitchen-diner rear extension in West Derby
- Kitchen-diner rear extension in Kensington
Other work in Old Swan:
FAQ
Kitchen-diner rear extension questions in Old Swan
How long does a rear extension take to build in Old Swan?
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 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.
How big should a kitchen-diner be?
Around 25 to 35 m² for the combined kitchen, dining and seating areas suits most family homes. Your survey shows what fits the house.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.
How much does a kitchen-diner rear extension cost in Old Swan?
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 you match the brick or stone on my Old Swan house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.