Harold Wood, Greater London
Terraced house rear extension in Harold Wood
Terraced house rear extension in Harold Wood: rear and side return extensions for terraces, with access through the house and two neighbours. We measure the house, show you what the rules allow, price it in writing and build it.
We cover Harold Wood (RM2, RM3 and RM11) as part of our Greater London work. On a Harold 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 Harold Wood?
For Harold 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 |
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 Harold Wood?
Here is how the rules in England apply to a terraced house rear extension in Harold Wood.
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.
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 Harold Wood like to extend?
Harold Wood is mostly 1930s semis, short terraces and post-war houses, so full-width single-storey and two-storey rear extensions are realistic on many plots. Some later estates had permitted development rights removed by condition, so we check the planning history first.
How a terraced house rear extension in Harold Wood 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.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Terraced house rear extensions near Harold Wood
From Harold Wood, the nearest places we also cover are Emerson Park (1.3 miles) and Romford (2.4 miles).
- Terraced house rear extension in Emerson Park
- Terraced house rear extension in Romford
- Terraced house rear extension in Hornchurch
- Terraced house rear extension in Upminster
- Terraced house rear extension in Collier Row
Other work in Harold Wood:
FAQ
Terraced house rear extension questions in Harold Wood
Is the site visit in Harold Wood free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How much does a terraced house rear extension cost in Harold 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 you build without side access?
Yes. Materials come through the house in protected runs or over the roof by crane on tight sites.
Do you handle building control in Harold Wood?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Do I need planning permission for a rear extension in Harold Wood?
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 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.