Muswell Hill, Greater London
Terraced house rear extension in Muswell Hill
Rear and side return extensions for terraces, with access through the house and two neighbours. If you live in Muswell Hill 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.
Muswell Hill sits in Greater London, with postcode districts including N2, N8 and N10. Terraced streets make up much of the housing in parts of Greater London, 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 Muswell Hill?
A terraced house rear extension in Muswell Hill is priced at £2,660–£4,290 per square metre including VAT as a guide, before kitchen fit-out and fees. London prices sit at the top of our range because of labour rates, access through the house, parking suspensions and skip licences.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4.5 m deep (13.5 m²) | £36,000–£58,000 |
| 3 m wide × 6 m deep (18 m²) | £48,000–£77,000 |
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 Muswell Hill?
Whether your terraced house rear extension in Muswell Hill 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.
The Party Wall etc. Act 1996 applies in England: you serve notice two months before work to a shared wall, and one month before digging foundations within 3 metres (or 6 metres for deeper foundations) of a neighbour's building. Neighbours can agree in writing; if they dissent, surveyors agree an award.
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 Muswell Hill like to extend?
Period terraces in Muswell Hill sit alongside flats, and the difference matters: houses usually keep permitted development rights, while flats and maisonettes need planning permission for any rear extension.
How a terraced house rear extension in Muswell Hill 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.
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.
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 Muswell Hill
Close by, we work in Hornsey, about 0.9 miles away, and Crouch End, about 1.1 miles away.
- Terraced house rear extension in Hornsey
- Terraced house rear extension in Crouch End
- Terraced house rear extension in Wood Green
- Terraced house rear extension in Archway
- Terraced house rear extension in Friern Barnet
Other work in Muswell Hill:
FAQ
Terraced house rear extension questions in Muswell Hill
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 you handle building control in Muswell Hill?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Can you build without side access?
Yes. Materials come through the house in protected runs or over the roof by crane on tight sites.
How long does a rear extension take to build in Muswell Hill?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
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.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.