Chorleywood, Hertfordshire
Wraparound extension in Chorleywood
An L-shaped extension that fills the side return and runs across the back. If you live in Chorleywood 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 Chorleywood (WD3) as part of our Hertfordshire work. 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 Chorleywood?
A wraparound extension in Chorleywood is priced at £2,330–£3,820 per square metre including VAT as a guide, before kitchen fit-out and fees. 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 |
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 wraparound extension in Chorleywood?
Planning for a wraparound extension in Chorleywood follows the English householder rules.
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 Chorleywood like to extend?
Chorleywood mixes Victorian terraces with 1930s semis, so both side returns and full-width kitchen extensions suit houses here.
How a wraparound extension in Chorleywood comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
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.
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 Chorleywood
We also build wraparound extensions in nearby Rickmansworth (1.9 miles) and Batchworth (2.6 miles).
- Wraparound extension in Rickmansworth
- Wraparound extension in Batchworth
- Wraparound extension in Croxley Green
- Wraparound extension in Chalfont St Peter
- Wraparound extension in West Watford
Other work in Chorleywood:
FAQ
Wraparound extension questions in Chorleywood
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
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.
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.
Is the site visit in Chorleywood free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How long does a rear extension take to build in Chorleywood?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.