Seaford, East Sussex
Terraced house rear extension in Seaford
Thinking about a terraced house rear extension in Seaford? Rear and side return extensions for terraces, with access through the house and two neighbours. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
Seaford is covered from our East Sussex round, including BN25. On a Seaford 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 Seaford?
For Seaford we work from the South East England rate: £2,300–£3,700 per square metre of new floor, including VAT, 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 × 4.5 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 Seaford?
Whether your terraced house rear extension in Seaford 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.
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. 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 Seaford like to extend?
Commuter semis and detached houses make up much of Seaford, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a terraced house rear extension in Seaford 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.
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.
Terraced house rear extensions near Seaford
We also build rear extensions for terraced houses in nearby Newhaven (2.7 miles) and Peacehaven (5.0 miles).
- Terraced house rear extension in Newhaven
- Terraced house rear extension in Peacehaven
- Terraced house rear extension in Rottingdean
- Terraced house rear extension in Eastbourne
- Terraced house rear extension in Lewes
Other work in Seaford:
FAQ
Terraced house rear extension questions in Seaford
Is the site visit in Seaford free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
Do I need planning permission for a rear extension in Seaford?
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.
Can you build without side access?
Yes. Materials come through the house in protected runs or over the roof by crane on tight sites.
Can you match the brick or stone on my Seaford 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 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 I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.