Maidstone, Kent
Kitchen-diner rear extension in Maidstone
An open-plan kitchen, dining and family room that opens straight onto the garden. We design, get the approvals for and build kitchen-diner rear extensions in Maidstone and the surrounding area, with one contract from the first survey to building control sign-off.
Maidstone sits in Kent, with postcode districts including ME14, ME15 and ME16. A kitchen-diner is often the reason people in Maidstone extend: the back kitchen in inter-war semis and 1960s estates is rarely big enough for a table.
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 Maidstone?
In Maidstone, our guide for a kitchen-diner rear extension is £2,130–£3,470 per square metre including VAT for a standard specification. South East prices run above our West Midlands baseline, mainly on labour rates and clay-soil foundations.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £25,500–£41,500 |
| 4 m wide × 5 m deep (20 m²) | £42,500–£69,500 |
| 4 m wide × 6 m deep (24 m²) | £51,000–£83,500 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a kitchen-diner rear extension in Maidstone?
Planning for a kitchen-diner rear extension in Maidstone 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.
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. 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 Maidstone like to extend?
Around Maidstone the housing ranges from inter-war semis to 1960s and 1970s estates with good-sized gardens. Many of the newer estates had permitted development rights removed by condition, so we check the planning history before anything is drawn. 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 Maidstone homes.
How a kitchen-diner rear extension in Maidstone 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.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
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.
Kitchen-diner rear extensions near Maidstone
Close by, we work in Snodland, about 5.4 miles away, and Chatham, about 7.8 miles away.
- Kitchen-diner rear extension in Snodland
- Kitchen-diner rear extension in Chatham
- Kitchen-diner rear extension in Rochester
- Kitchen-diner rear extension in Gillingham
- Kitchen-diner rear extension in Strood
Other work in Maidstone:
FAQ
Kitchen-diner rear extension questions in Maidstone
What postcode areas do you cover around Maidstone?
Including ME14, ME15 and ME16, and the surrounding Kent area.
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.
Should the sink face the garden?
If the plan allows, an island sink or hob facing the glass is a common choice. It needs a floor-level drain run, which is easy to lay in a new slab.
Is the site visit in Maidstone free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do you handle building control in Maidstone?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
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.