Berkhamsted, Hertfordshire
Bungalow rear extension in Berkhamsted
Single-storey rear extensions that keep everything on one level. We design, get the approvals for and build rear extensions for bungalows in Berkhamsted and the surrounding area, with one contract from the first survey to building control sign-off.
Berkhamsted is covered from our Hertfordshire round, including HP4. For Berkhamsted bungalows we design the roof first, because the low eaves decide the height of the new room.
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 bungalow rear extension cost in Berkhamsted?
For Berkhamsted we work from the East of England rate: £1,960–£3,180 per square metre of new floor, including VAT, 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) | £23,500–£38,000 |
| 4 m wide × 6 m deep (24 m²) | £47,000–£76,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a bungalow rear extension in Berkhamsted?
Here is how the rules in England apply to a bungalow rear extension in Berkhamsted.
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.
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. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Berkhamsted like to extend?
Berkhamsted mixes Victorian terraces with 1930s semis, so both side returns and full-width kitchen extensions suit houses here.
How a bungalow rear extension in Berkhamsted 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.
Bungalow rear extensions near Berkhamsted
Close by, we work in Chesham, about 4.4 miles away, and Tring, about 4.6 miles away.
- Bungalow rear extension in Chesham
- Bungalow rear extension in Tring
- Bungalow rear extension in Hemel Hempstead
- Bungalow rear extension in Amersham on the Hill
- Bungalow rear extension in Amersham
Other work in Berkhamsted:
FAQ
Bungalow rear extension questions in Berkhamsted
Is the site visit in Berkhamsted free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How much does a bungalow rear extension cost in Berkhamsted?
As a guide, £1,960–£3,180 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £23,500–£38,000 at that rate. Your written price follows the survey.
Do I need to move out?
Rarely; the opening into the bungalow is made late in the build.
Do you handle building control in Berkhamsted?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Do I need planning permission for a rear extension in Berkhamsted?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.