Hadley Wood, Greater London
Terraced house rear extension in Hadley Wood
Rear and side return extensions for terraces, with access through the house and two neighbours. If you live in Hadley Wood 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.
We cover Hadley Wood (EN4, EN5 and N20) as part of our Greater London work. On a Hadley Wood 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 Hadley Wood?
For Hadley Wood we work from the London rate: £2,660–£4,290 per square metre of new floor, including VAT, standard specification. 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 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a terraced house rear extension in Hadley Wood?
Planning for a terraced house rear extension in Hadley Wood follows the English householder rules.
Under England's householder permitted development rules you can usually add 3 metres at the back of an attached house, or 4 metres on a detached house, without a planning application, as long as the extension stays under 4 metres high and its eaves stay under 3 metres where it is 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. 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 Hadley Wood like to extend?
Much of Hadley Wood is 1920s and 1930s semis and short terraces with longer gardens than inner London, which suit full-width single-storey rear extensions. Parking suspensions, skip licences and controlled hours on residential streets shape the programme more than the build itself.
How a terraced house rear extension in Hadley Wood 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 Hadley Wood
We also build rear extensions for terraced houses in nearby New Barnet (1.2 miles) and East Barnet (1.4 miles).
- Terraced house rear extension in New Barnet
- Terraced house rear extension in East Barnet
- Terraced house rear extension in Cockfosters
- Terraced house rear extension in Barnet
- Terraced house rear extension in Potters Bar
Other work in Hadley Wood:
FAQ
Terraced house rear extension questions in Hadley Wood
How much does a terraced house rear extension cost in Hadley Wood?
As a guide, £2,660–£4,290 per square metre including VAT for a standard specification. For example, 3 m wide × 4.5 m deep (13.5 m²): about £36,000–£58,000 at that rate. Your written price follows the survey.
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.
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.
Is the site visit in Hadley Wood free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How long does a rear extension take to build in Hadley Wood?
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 you handle building control in Hadley Wood?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.