Newhaven, East Sussex
Bungalow rear extension in Newhaven
Thinking about a bungalow rear extension in Newhaven? Single-storey rear extensions that keep everything on one level. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
We cover Newhaven (BN9) as part of our East Sussex work. For Newhaven bungalows we design the roof first, because the low eaves decide the height of the new room.
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 Newhaven?
In Newhaven, our guide for a bungalow rear extension is £2,070–£3,360 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 |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £25,000–£40,500 |
| 4 m wide × 6 m deep (24 m²) | £49,500–£80,500 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a bungalow rear extension in Newhaven?
Whether your bungalow rear extension in Newhaven needs a planning application depends on its size, your house and any local restrictions.
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.
If 3 or 4 metres is not enough, England's prior approval route allows 6 metres on a terraced or semi-detached house and 8 metres on a detached house for a single-storey rear extension. Neighbours are consulted, the council decides within 42 days, and the fee is £249, rising to £310 from 8 December 2026.
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 Newhaven like to extend?
Commuter semis and detached houses make up much of Newhaven, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a bungalow rear extension in Newhaven 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.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Bungalow rear extensions near Newhaven
Close by, we work in Seaford, about 2.7 miles away, and Peacehaven, about 2.7 miles away.
- Bungalow rear extension in Seaford
- Bungalow rear extension in Peacehaven
- Bungalow rear extension in Rottingdean
- Bungalow rear extension in Lewes
- Bungalow rear extension in Brighton
Other work in Newhaven:
FAQ
Bungalow rear extension questions in Newhaven
What postcode areas do you cover around Newhaven?
Including BN9, and the surrounding East Sussex area.
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.
Is a bungalow extension cheaper?
The rates are similar per square metre; roof work can add a little.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Can you match the brick or stone on my Newhaven 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 Newhaven?
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.