Baldock, Hertfordshire
Kitchen-diner rear extension in Baldock
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 Baldock and the surrounding area, with one contract from the first survey to building control sign-off.
Baldock and its postcode districts SG6 and SG7 are part of our Hertfordshire coverage. 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 Baldock 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 Baldock?
In Baldock, our guide for a kitchen-diner rear extension is £2,010–£3,290 per square metre including VAT for a standard specification. East of England prices run slightly above our West Midlands baseline; clay soils near trees are the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £24,000–£39,500 |
| 4 m wide × 5 m deep (20 m²) | £40,500–£65,500 |
| 4 m wide × 6 m deep (24 m²) | £48,500–£79,000 |
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 kitchen-diner rear extension in Baldock?
Whether your kitchen-diner rear extension in Baldock 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.
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 Baldock like to extend?
Post-war semis and newer estates are typical of Baldock, and many have room for a full-width extension. Shrinkable clay is common in the East of England, so foundations near trees and hedges are designed to NHBC-style depth guidance.
How a kitchen-diner rear extension in Baldock 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 Baldock
From Baldock, the nearest places we also cover are Letchworth Garden City (1.7 miles) and Hitchin (4.9 miles).
- Kitchen-diner rear extension in Letchworth Garden City
- Kitchen-diner rear extension in Hitchin
- Kitchen-diner rear extension in Henlow
- Kitchen-diner rear extension in Stevenage
- Kitchen-diner rear extension in Biggleswade
Other work in Baldock:
FAQ
Kitchen-diner rear extension questions in Baldock
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.
How much does a kitchen-diner rear extension cost in Baldock?
As a guide, £2,010–£3,290 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £24,000–£39,500 at that rate. Your written price follows the survey.
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.
What postcode areas do you cover around Baldock?
Including SG6 and SG7, and the surrounding Hertfordshire area.
Do you handle building control in Baldock?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Is the site visit in Baldock free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.