Chalfont St Peter, Buckinghamshire
Wraparound extension in Chalfont St Peter
An L-shaped extension that fills the side return and runs across the back. If you live in Chalfont St Peter and want to know what a wraparound extension would cost and whether it needs planning, start with the online guide price or a free site visit.
We cover Chalfont St Peter (SL9) as part of our Buckinghamshire work. Wraparound projects around Chalfont St Peter often involve two neighbours, so we start the party wall conversations early.
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 Chalfont St Peter?
In Chalfont St Peter, our guide for a wraparound extension is £2,460–£4,030 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 |
|---|---|
| L-shaped, about 22 m² of new floor | £54,000–£88,500 |
| L-shaped, about 30 m² of new floor | £74,000–£121,000 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a wraparound extension in Chalfont St Peter?
The planning route for a wraparound extension in Chalfont St Peter is set by England's householder rules and your council.
Side return infills and the side leg of a wraparound are treated as side extensions in England: single-storey, no more than 4 metres high and no wider than half the original house. They are not permitted development in conservation areas, National Parks or National Landscapes, and a joined wraparound often needs a planning application because the side and rear rules apply together.
The Party Wall etc. Act 1996 applies in England: you serve notice two months before work to a shared wall, and one month before digging foundations within 3 metres (or 6 metres for deeper foundations) of a neighbour's building. Neighbours can agree in writing; if they dissent, surveyors agree an award.
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 Chalfont St Peter like to extend?
Commuter semis and detached houses make up much of Chalfont St Peter, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a wraparound extension in Chalfont St Peter 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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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.
Wraparound extensions near Chalfont St Peter
We also build wraparound extensions in nearby Gerrards Cross (1.6 miles) and Chorleywood (3.6 miles).
- Wraparound extension in Gerrards Cross
- Wraparound extension in Chorleywood
- Wraparound extension in Beaconsfield
- Wraparound extension in Rickmansworth
- Wraparound extension in Batchworth
Other work in Chalfont St Peter:
FAQ
Wraparound extension questions in Chalfont St Peter
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 Chalfont St Peter?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Is it worth it over a side return alone?
If you want a dining table and a sofa as well as the kitchen, usually yes.
Is the site visit in Chalfont St Peter free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
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.
What postcode areas do you cover around Chalfont St Peter?
Including SL9, and the surrounding Buckinghamshire area.