Southsea, Hampshire
Bungalow rear extension in Southsea
Single-storey rear extensions that keep everything on one level. We design, get the approvals for and build rear extensions for bungalows in Southsea and the surrounding area, with one contract from the first survey to building control sign-off.
Southsea is covered from our Hampshire round, including PO1, PO4 and PO5. For bungalows in Hampshire, 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 Southsea?
A bungalow rear extension in Southsea 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 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a bungalow rear extension in Southsea?
The planning route for a bungalow rear extension in Southsea 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. 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 Southsea like to extend?
Commuter semis and detached houses make up much of Southsea, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a bungalow rear extension in Southsea 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.
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.
Bungalow rear extensions near Southsea
Close by, we work in Portsmouth, about 1.1 miles away, and Gosport, about 1.9 miles away.
- Bungalow rear extension in Portsmouth
- Bungalow rear extension in Gosport
- Bungalow rear extension in Cosham
- Bungalow rear extension in South Hayling
- Bungalow rear extension in Hayling Island
Other work in Southsea:
FAQ
Bungalow rear extension questions in Southsea
Do you handle building control in Southsea?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
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 to move out?
Rarely; the opening into the bungalow is made late in the build.
How much does a bungalow rear extension cost in Southsea?
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 Southsea?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Do I need planning permission for a rear extension in Southsea?
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.