Hitchin, Hertfordshire
Wraparound extension in Hitchin
Wraparound extension in Hitchin: an L-shaped extension that fills the side return and runs across the back. We measure the house, show you what the rules allow, price it in writing and build it.
Hitchin sits in Hertfordshire, with postcode districts including SG6. Wraparounds are the natural next step for the end-of-terrace and Victorian houses in Hertfordshire where a side return alone would leave the room too narrow.
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 wraparound extension cost in Hitchin?
In Hitchin, our guide for a wraparound extension is £2,330–£3,820 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 |
|---|---|
| L-shaped, about 22 m² of new floor | £51,500–£84,000 |
| L-shaped, about 30 m² of new floor | £70,000–£114,500 |
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 wraparound extension in Hitchin?
The planning route for a wraparound extension in Hitchin is set by England's householder rules and your council.
In England the side part of a side return or wraparound must meet the side-extension rules (one storey, under 4 metres high, no more than half the width of the original house), and those rights do not apply on designated land. Because a wraparound combines a side and a rear extension, many need householder planning permission.
Because rear extensions often sit on or near the boundary, the Party Wall etc. Act 1996 usually applies in England. Notices go out one or two months before work depending on the type of work, and a surveyor's award is only needed if a neighbour does not consent.
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 Hitchin like to extend?
Post-war semis and newer estates are typical of Hitchin, 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 wraparound extension in Hitchin 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.
Wraparound extensions near Hitchin
Neighbouring places we cover include Letchworth Garden City (3.2 miles) and Stevenage (4.8 miles).
- Wraparound extension in Letchworth Garden City
- Wraparound extension in Stevenage
- Wraparound extension in Baldock
- Wraparound extension in Henlow
- Wraparound extension in Codicote
Other work in Hitchin:
FAQ
Wraparound extension questions in Hitchin
Can you match the brick or stone on my Hitchin house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
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 the corner be all glass?
Yes, with a steel or aluminium post or a structural glass corner. It needs careful thermal detailing to meet Building Regulations.
How much does a wraparound extension cost in Hitchin?
As a guide, £2,330–£3,820 per square metre including VAT for a standard specification. For example, L-shaped, about 22 m² of new floor: about £51,500–£84,000 at that rate. Your written price follows the survey.
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 long does a rear extension take to build in Hitchin?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.