Extending your home in Rayleigh
From a small utility to a two-storey addition, we take on house extensions throughout Rayleigh, starting with a free visit and a planning check.
- Postcode districtsSS5, SS6, SS7
- Price regionEast of England (×1.06)
- Planning rulesEngland
- Site visitFree, no obligation
Planning and building control in Rayleigh
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a single-storey side return infill is often permitted development if it stays within the height limits and is no wider than half the width of the original house. Conservation areas, listed buildings and flats always need an application, and the boundary wall usually brings in the Party Wall Act.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
Which extension suits a Rayleigh home?
The East of England mixes market-town terraces, inter-war semis and modern estates. Clay soils are common in parts of the region, which can affect foundation design.
The types we would usually look at first for a home in Rayleigh are bungalow extensions, double-storey extensions and wraparound extensions, depending on the garden and how the house is laid out.
What extensions cost in Rayleigh
We publish guide prices so you can budget before anyone visits. For Rayleigh they are adjusted by ×1.06, the factor we use across East of England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Wraparound extensions | 25 m² | £60,500 – £77,000 |
| Side return extensions | 11 m² | £27,500 – £35,000 |
| Double-storey extensions | 32 m² | £61,000 – £80,000 |
| Extensions over a garage | 12 m² | £26,500 – £34,500 |
| Kitchen extensions | 20 m² | £44,500 – £56,500 |
| Single-storey rear extensions | 20 m² | £43,000 – £55,500 |
Covering Rayleigh and nearby
We cover Rayleigh and the postcode districts SS5, SS6, SS7. The same team covers Hadleigh (2 miles), Benfleet (3 miles), Wickford (4 miles), Canvey Island (5 miles), Southend-on-Sea (6 miles), all within easy reach. Gillingham, in Kent, is roughly 14 miles from Rayleigh and also on our list.
All extension types we build in Rayleigh
- Conservatory replacement extensions · from £21,000
- Pitched roof extensions · from £23,500
- Kitchen extensions · from £28,500
- Building regulations for extensions · from £950
- Glass box extensions · from £31,500
- Side return extensions · from £19,000
- Utility and boot room extensions · from £14,500
- Flat roof extensions · from £22,000
- Annexe extensions · from £58,000
- Planning permission for extensions · from £350
- Home office extensions · from £16,500
- Extensions over a garage · from £25,000
- Single-storey rear extensions · from £22,000
- Timber frame extensions · from £22,000
- Bungalow extensions · from £27,500
- Extension plans and drawings · from £1,250
- Double-storey extensions · from £40,000
- Side extensions · from £23,000
- Wraparound extensions · from £38,000
- Orangery extensions · from £31,500
- Porch extensions · from £4,200
- Bedroom extensions · from £27,500
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Rayleigh
How much does an extension cost in Rayleigh?
Using our East of England factor (×1.06), a standard-spec single-storey extension of 20 m² is a guide £43,000 to £55,500 including VAT, and a 32 m² two-storey extension £61,000 to £80,000. Your written price follows the survey.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Rayleigh, and the guide-price tool gives a range for your own size and finish in about a minute.
Will my neighbours need to be told?
If you apply for planning or prior approval the council notifies them, and in England party wall notices may be needed for work near a shared boundary.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Book a free site visit in Rayleigh
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.