Rayleigh, Essex
Two-storey rear extension in Rayleigh
For homes in Rayleigh, 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.
We cover Rayleigh (SS6) as part of our Essex work. Two-storey rear extensions suit semi-detached houses in Rayleigh best, where the extra bedroom matters as much as the bigger kitchen.
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 Rayleigh?
In Rayleigh, 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 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a two-storey rear extension in Rayleigh?
Here is how the rules in England apply to a two-storey rear extension in Rayleigh.
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. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Rayleigh like to extend?
Rayleigh mixes Victorian terraces with 1930s semis, so both side returns and full-width kitchen extensions suit houses here. In Essex we check the neighbours' rear windows first, because the upper floor is where most two-storey schemes win or lose planning.
How a two-storey rear extension in Rayleigh 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.
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.
Two-storey rear extensions near Rayleigh
We also build two-storey rear extensions in nearby Hadleigh (2.3 miles) and South Benfleet (3.0 miles).
- Two-storey rear extension in Hadleigh
- Two-storey rear extension in South Benfleet
- Two-storey rear extension in Wickford
- Two-storey rear extension in Pitsea
- Two-storey rear extension in Rochford
Other work in Rayleigh:
FAQ
Two-storey rear extension questions in Rayleigh
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.
What postcode areas do you cover around Rayleigh?
Including SS6, and the surrounding Essex area.
Will we need to move out?
Rarely. The first-floor opening is made late in the job and sealed with temporary screens.
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.
Do I need planning permission for a rear extension in Rayleigh?
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.
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.