Extensions in Ely: design, planning and build
From a small utility to a two-storey addition, we take on house extensions throughout Ely, starting with a free visit and a planning check.
- Postcode districtsCB6
- Price regionEast of England (×1.06)
- Planning rulesEngland
- Site visitFree, no obligation
What extensions cost in Ely
We publish guide prices so you can budget before anyone visits. For Ely they are adjusted by ×1.06, the factor we use across East of England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Kitchen extensions | 20 m² | £44,500 – £56,500 |
| Conservatory replacement extensions | 14 m² | £31,500 – £41,000 |
| Wraparound extensions | 25 m² | £60,500 – £77,000 |
| Single-storey rear extensions | 20 m² | £43,000 – £55,500 |
| Orangery extensions | 16 m² | £47,000 – £59,500 |
Ely and surrounding towns
We cover Ely and the postcode districts CB6. We also work in nearby March (13 miles), Cambridge (15 miles), Wisbech (19 miles), Huntingdon (20 miles), Peterborough (25 miles). For homes towards Suffolk, Newmarket is around 12 miles away.
Choosing the right extension in Ely
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 Ely are wraparound extensions, double-storey extensions and bungalow extensions, depending on the garden and how the house is laid out.
Do extensions in Ely need planning permission?
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 extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a householder planning application.
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).
Extension types and starting prices
- Planning permission for extensions · from £350
- Glass box extensions · from £31,500
- Extension plans and drawings · from £1,250
- Flat roof extensions · from £22,000
- Timber frame extensions · from £22,000
- Kitchen extensions · from £28,500
- Building regulations for extensions · from £950
- Wraparound extensions · from £38,000
- Double-storey extensions · from £40,000
- Home office extensions · from £16,500
- Bedroom extensions · from £27,500
- Extensions over a garage · from £25,000
- Utility and boot room extensions · from £14,500
- Single-storey rear extensions · from £22,000
- Pitched roof extensions · from £23,500
- Side extensions · from £23,000
- Conservatory replacement extensions · from £21,000
- Orangery extensions · from £31,500
- Porch extensions · from £4,200
- Bungalow extensions · from £27,500
- Annexe extensions · from £58,000
- Side return extensions · from £19,000
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
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Questions about extensions in Ely
How much does an extension cost in Ely?
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.
Do I need planning permission for an extension in Ely?
Not always. It depends on the size, position and your property's history. Many single-storey rear extensions in England are permitted development or can use prior approval.
How long does an extension take in Ely?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Book a free site visit in Ely
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.