Goodmayes, Greater London
Kitchen-diner rear extension in Goodmayes
An open-plan kitchen, dining and family room that opens straight onto the garden. If you live in Goodmayes and want to know what a kitchen-diner rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
We cover Goodmayes (IG3, RM6 and RM8) as part of our Greater London work. 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 Goodmayes 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 Goodmayes?
In Goodmayes, our guide for a kitchen-diner rear extension is £2,470–£4,030 per square metre including VAT for a standard specification. 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 |
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 kitchen-diner rear extension in Goodmayes?
Planning for a kitchen-diner rear extension in Goodmayes follows the English householder rules.
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.
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. 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 Goodmayes like to extend?
Much of Goodmayes is 1920s and 1930s semis and short terraces with longer gardens than inner London, which suit full-width single-storey rear extensions. Parking suspensions, skip licences and controlled hours on residential streets shape the programme more than the build itself.
How a kitchen-diner rear extension in Goodmayes comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
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.
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.
Kitchen-diner rear extensions near Goodmayes
We also build kitchen-diner rear extensions in nearby Becontree (1.0 miles) and Ilford (1.7 miles).
- Kitchen-diner rear extension in Becontree
- Kitchen-diner rear extension in Ilford
- Kitchen-diner rear extension in Barkingside
- Kitchen-diner rear extension in Barking
- Kitchen-diner rear extension in Dagenham
Other work in Goodmayes:
FAQ
Kitchen-diner rear extension questions in Goodmayes
What postcode areas do you cover around Goodmayes?
Including IG3, RM6 and RM8, and the surrounding Greater London area.
Is the site visit in Goodmayes free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Where does the cooker extraction go?
Through the new wall or roof, ducted to outside. Recirculating hoods are possible but less effective.
How much does a kitchen-diner rear extension cost in Goodmayes?
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.
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.
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.