Crystal Palace, Greater London
Kitchen-diner rear extension in Crystal Palace
Thinking about a kitchen-diner rear extension in Crystal Palace? An open-plan kitchen, dining and family room that opens straight onto the garden. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
Crystal Palace is covered from our Greater London round, including SE19, SE20 and SE26. For Crystal Palace kitchens we plan the extraction route and the island drainage before the slab is poured, so nothing has to be chased in later.
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 Crystal Palace?
A kitchen-diner rear extension in Crystal Palace is priced at £2,470–£4,030 per square metre including VAT as a guide, before kitchen fit-out and fees. London prices sit at the top of our range because of labour rates, access through the house, parking suspensions and skip licences.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £29,500–£48,500 |
| 4 m wide × 5 m deep (20 m²) | £49,500–£80,500 |
| 4 m wide × 6 m deep (24 m²) | £59,500–£96,500 |
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 Crystal Palace?
The planning route for a kitchen-diner rear extension in Crystal Palace is set by England's householder rules and your council.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres 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. 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 Crystal Palace like to extend?
Period terraces in Crystal Palace sit alongside flats, and the difference matters: houses usually keep permitted development rights, while flats and maisonettes need planning permission for any rear extension.
How a kitchen-diner rear extension in Crystal Palace 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.
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 Crystal Palace
From Crystal Palace, the nearest places we also cover are Upper Norwood (0.7 miles) and Gipsy Hill (0.8 miles).
- Kitchen-diner rear extension in Upper Norwood
- Kitchen-diner rear extension in Gipsy Hill
- Kitchen-diner rear extension in South Norwood
- Kitchen-diner rear extension in Norbury
- Kitchen-diner rear extension in Thornton Heath
Other work in Crystal Palace:
FAQ
Kitchen-diner rear extension questions in Crystal Palace
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.
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.
Where does the cooker extraction go?
Through the new wall or roof, ducted to outside. Recirculating hoods are possible but less effective.
What postcode areas do you cover around Crystal Palace?
Including SE19, SE20 and SE26, and the surrounding Greater London area.
How much does a kitchen-diner rear extension cost in Crystal Palace?
As a guide, £2,470–£4,030 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £29,500–£48,500 at that rate. Your written price follows the survey.
Is the site visit in Crystal Palace free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.