Abbots Langley, Hertfordshire
Two-storey rear extension in Abbots Langley
For homes in Abbots Langley, a two-storey rear extension is often the simplest way to gain space without moving. A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We take it from survey to completion certificate.
Abbots Langley is covered from our Hertfordshire round, including WD5. In Hertfordshire we check the neighbours' rear windows first, because the upper floor is where most two-storey schemes win or lose planning.
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 two-storey rear extension cost in Abbots Langley?
In Abbots Langley, our guide for a two-storey rear extension is £1,910–£2,860 per square metre including VAT for a standard specification. 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 × 5 m footprint, two floors (30 m²) | £57,000–£86,000 |
| 4 m × 6 m footprint, two floors (48 m²) | £91,500–£137,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a two-storey rear extension in Abbots Langley?
Whether your two-storey rear extension in Abbots Langley needs a planning application depends on its size, your house and any local restrictions.
A two-storey rear extension can be permitted development in England only if it projects no more than 3 metres, stays at least 7 metres from the rear boundary, matches the existing roof pitch and has obscure-glazed upper side windows. In practice most double-storey rear extensions go through a householder planning application.
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 Abbots Langley like to extend?
Post-war semis and newer estates are typical of Abbots Langley, 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 two-storey rear extension in Abbots Langley 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
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.
Two-storey rear extensions near Abbots Langley
Close by, we work in North Watford, about 2.0 miles away, and West Watford, about 3.3 miles away.
- Two-storey rear extension in North Watford
- Two-storey rear extension in West Watford
- Two-storey rear extension in Hemel Hempstead
- Two-storey rear extension in Watford
- Two-storey rear extension in St Albans
Other work in Abbots Langley:
FAQ
Two-storey rear extension questions in Abbots Langley
What postcode areas do you cover around Abbots Langley?
Including WD5, and the surrounding Hertfordshire area.
How long does a rear extension take to build in Abbots Langley?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
What is the 45-degree rule?
Many councils check that a two-storey extension does not cross a 45-degree line drawn from the nearest habitable window of the neighbouring house. We test it at the first drawing.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
How much does a two-storey rear extension cost in Abbots Langley?
As a guide, £1,910–£2,860 per square metre including VAT for a standard specification. For example, 3 m × 5 m footprint, two floors (30 m²): about £57,000–£86,000 at that rate. Your written price follows the survey.
Can you match the brick or stone on my Abbots Langley house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.