Henley-on-Thames, Oxfordshire
Bungalow rear extension in Henley-on-Thames
Single-storey rear extensions that keep everything on one level. If you live in Henley-on-Thames and want to know what a bungalow rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Henley-on-Thames and its postcode districts RG9 are part of our Oxfordshire coverage. For bungalows in Oxfordshire, a rear extension is the usual way to add space without adding stairs.
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 Henley-on-Thames?
A bungalow rear extension in Henley-on-Thames is priced at £2,070–£3,360 per square metre including VAT as a guide, before kitchen fit-out and fees. South East prices run above our West Midlands baseline, mainly on labour rates and clay-soil foundations.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £25,000–£40,500 |
| 4 m wide × 6 m deep (24 m²) | £49,500–£80,500 |
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 bungalow rear extension in Henley-on-Thames?
Here is how the rules in England apply to a bungalow rear extension in Henley-on-Thames.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres 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. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Henley-on-Thames like to extend?
Commuter semis and detached houses make up much of Henley-on-Thames, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a bungalow rear extension in Henley-on-Thames 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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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 Henley-on-Thames
Close by, we work in Marlow, about 6.0 miles away, and Reading, about 6.1 miles away.
- Bungalow rear extension in Marlow
- Bungalow rear extension in Reading
- Bungalow rear extension in Lower Earley
- Bungalow rear extension in Maidenhead
- Bungalow rear extension in Wokingham
Other work in Henley-on-Thames:
FAQ
Bungalow rear extension questions in Henley-on-Thames
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 Henley-on-Thames free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How deep can I extend?
The same limits as a house: 3 or 4 metres in England, more with prior approval.
Do I need planning permission for a rear extension in Henley-on-Thames?
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.
How long does a rear extension take to build in Henley-on-Thames?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
What postcode areas do you cover around Henley-on-Thames?
Including RG9, and the surrounding Oxfordshire area.