Cowes, Isle of Wight
Bungalow rear extension in Cowes
Single-storey rear extensions that keep everything on one level. We design, get the approvals for and build rear extensions for bungalows in Cowes and the surrounding area, with one contract from the first survey to building control sign-off.
Cowes and its postcode districts PO31 are part of our Isle of Wight coverage. For bungalows in the Isle of Wight, a rear extension is the usual way to add space without adding stairs.
Ask about a site visit
Visits here are by arrangement; we'll confirm before booking.
Cowes is outside our regular coverage, so visits and projects here are by arrangement: we confirm whether we can take the job, and agree any travel costs, before the first visit.
How much does a bungalow rear extension cost in Cowes?
A bungalow rear extension in Cowes 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 |
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 Cowes?
The planning route for a bungalow rear extension in Cowes is set by England's householder rules and your council.
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. 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 Cowes like to extend?
Commuter semis and detached houses make up much of Cowes, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a bungalow rear extension in Cowes comes together
Site visit by arrangement
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.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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.
Bungalow rear extensions near Cowes
From Cowes, the nearest places we also cover are East Cowes (0.5 miles) and Newport (4.2 miles).
- Bungalow rear extension in East Cowes
- Bungalow rear extension in Newport
- Bungalow rear extension in Ryde
- Bungalow rear extension in Sandown
- Bungalow rear extension in Shanklin
Other work in Cowes:
FAQ
Bungalow rear extension questions in Cowes
How much does a bungalow rear extension cost in Cowes?
As a guide, £2,070–£3,360 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £25,000–£40,500 at that rate. Your written price follows the survey.
How long does a rear extension take to build in Cowes?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Can I extend the loft as well?
Sometimes, but that is a different project; a rear extension keeps everything on one level.
Do you handle building control in Cowes?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Can you match the brick or stone on my Cowes 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 planning permission for a rear extension in Cowes?
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.