Potters Bar, Hertfordshire
Terraced house rear extension in Potters Bar
For homes in Potters Bar, a terraced house rear extension is often the simplest way to gain space without moving. Rear and side return extensions for terraces, with access through the house and two neighbours. We take it from survey to completion certificate.
Potters Bar and its postcode districts EN6, WD2 and WD23 are part of our Hertfordshire coverage. On a Potters Bar 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 Potters Bar?
Guide prices for a terraced house rear extension in Potters Bar start from our East of England rate of £2,170–£3,500 per square metre, including VAT. East of England prices run slightly above our West Midlands baseline; clay soils near trees are the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4.5 m deep (13.5 m²) | £29,500–£47,000 |
| 3 m wide × 6 m deep (18 m²) | £39,000–£63,000 |
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 Potters Bar?
Planning for a terraced house rear extension in Potters Bar follows the English householder rules.
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part 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. 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 Potters Bar like to extend?
Post-war semis and newer estates are typical of Potters Bar, and many have room for a full-width extension. Shrinkable clay is common in the East of England, so foundations near trees and hedges are designed to NHBC-style depth guidance.
How a terraced house rear extension in Potters Bar 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.
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 Potters Bar
Neighbouring places we cover include Hadley Wood (1.9 miles) and New Barnet (3.0 miles).
- Terraced house rear extension in Hadley Wood
- Terraced house rear extension in New Barnet
- Terraced house rear extension in Barnet
- Terraced house rear extension in East Barnet
- Terraced house rear extension in Cockfosters
Other work in Potters Bar:
FAQ
Terraced house rear extension questions in Potters Bar
Do I need planning permission for a rear extension in Potters Bar?
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.
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 Potters Bar house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
How long does a rear extension take to build in Potters Bar?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Is the site visit in Potters Bar free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.