Slough, Berkshire
Terraced house rear extension in Slough
Rear and side return extensions for terraces, with access through the house and two neighbours. If you live in Slough and want to know what a terraced house rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Slough is covered from our Berkshire round, including SL1, SL2 and SL3. Terraced streets make up much of the housing in parts of Berkshire, and most rear extensions here go in without side access.
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 Slough?
In Slough, our guide for a terraced house rear extension is £2,300–£3,700 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 × 4.5 m deep (13.5 m²) | £31,000–£50,000 |
| 3 m wide × 6 m deep (18 m²) | £41,500–£66,500 |
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 terraced house rear extension in Slough?
Whether your terraced house rear extension in Slough 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. 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 Slough like to extend?
Around Slough the housing ranges from inter-war semis to 1960s and 1970s estates with good-sized gardens. Many of the newer estates had permitted development rights removed by condition, so we check the planning history before anything is drawn.
How a terraced house rear extension in Slough comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
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 Slough
Close by, we work in Windsor, about 1.8 miles away, and Burnham, about 3.5 miles away.
- Terraced house rear extension in Windsor
- Terraced house rear extension in Burnham
- Terraced house rear extension in Maidenhead
- Terraced house rear extension in Gerrards Cross
- Terraced house rear extension in West Drayton
Other work in Slough:
FAQ
Terraced house rear extension questions in Slough
How long does a rear extension take to build in Slough?
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 you match the brick or stone on my Slough house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
How deep can I go on a terrace?
3 metres under permitted development in England, or up to 6 metres with prior approval outside designated land.
Do you handle building control in Slough?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
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.
Is the site visit in Slough free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.