Sevenoaks, Kent
Terraced house rear extension in Sevenoaks
For homes in Sevenoaks, a terraced house rear extension is often the simplest way to gain space without moving. Rear and side return extensions for terraces, with access through the house and two neighbours. We take it from survey to completion certificate.
Sevenoaks is covered from our Kent round, including TN13. On a Sevenoaks terrace both neighbours usually need party wall notices or agreement, so we talk to them early.
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 terraced house rear extension cost in Sevenoaks?
A terraced house rear extension in Sevenoaks is priced at £2,300–£3,700 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 × 4.5 m deep (13.5 m²) | £31,000–£50,000 |
| 3 m wide × 6 m deep (18 m²) | £41,500–£66,500 |
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 terraced house rear extension in Sevenoaks?
The planning route for a terraced house rear extension in Sevenoaks 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.
Because rear extensions often sit on or near the boundary, the Party Wall etc. Act 1996 usually applies in England. Notices go out one or two months before work depending on the type of work, and a surveyor's award is only needed if a neighbour does not consent.
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 Sevenoaks like to extend?
Commuter semis and detached houses make up much of Sevenoaks, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a terraced house rear extension in Sevenoaks comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
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.
Terraced house rear extensions near Sevenoaks
From Sevenoaks, the nearest places we also cover are Chelsfield (6.5 miles) and Tonbridge (6.5 miles).
- Terraced house rear extension in Chelsfield
- Terraced house rear extension in Tonbridge
- Terraced house rear extension in Biggin Hill
- Terraced house rear extension in Orpington
- Terraced house rear extension in Oxted
Other work in Sevenoaks:
FAQ
Terraced house rear extension questions in Sevenoaks
How long does a rear extension take to build in Sevenoaks?
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 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 you build without side access?
Yes. Materials come through the house in protected runs or over the roof by crane on tight sites.
What postcode areas do you cover around Sevenoaks?
Including TN13, and the surrounding Kent area.
Do I need planning permission for a rear extension in Sevenoaks?
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.
Is the site visit in Sevenoaks free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.