Extending your home in Royton
Every type of house extension in Royton, from single-storey kitchen extensions to two-storey additions, side returns and orangeries. We design, handle the approvals and build.
- Postcode districtsOL1, OL2, OL9
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation

Guide prices for Royton
Use these Royton guide prices to sense-check a budget; the guide-price tool narrows them to your own size, and the site visit turns them into a written figure.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
| Side return extensions | 11 m² | £25,000 – £31,500 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
Royton and surrounding towns
Our survey diary covers Royton, including OL1, OL2, OL9. Neighbouring towns we cover include Chadderton (2 miles), Oldham (2 miles), Middleton (3 miles), Rochdale (4 miles), Heywood (4 miles). For homes towards Lancashire, Rawtenstall is around 11 miles away.
What works best for Royton houses?
The North West has a high share of Victorian and Edwardian terraces with rear yards and outriggers, plus large areas of inter-war semis in the suburbs.
The types we would usually look at first for a home in Royton are double-storey extensions, single-storey rear extensions and side return extensions, depending on the garden and how the house is laid out.
Approvals for an extension in Royton
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.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
All extension types we build in Royton
- Home office extensions · from £15,000
- Bungalow extensions · from £24,500
- Conservatory replacement extensions · from £19,000
- Planning permission for extensions · from £300
- Single-storey rear extensions · from £19,500
- Double-storey extensions · from £36,000
- Bedroom extensions · from £24,500
- Kitchen extensions · from £25,500
- Side extensions · from £20,500
- Flat roof extensions · from £19,500
- Porch extensions · from £3,800
- Side return extensions · from £17,000
- Orangery extensions · from £28,500
- Glass box extensions · from £28,500
- Utility and boot room extensions · from £13,000
- Pitched roof extensions · from £21,000
- Annexe extensions · from £52,000
- Timber frame extensions · from £19,500
- Wraparound extensions · from £34,000
- Extension plans and drawings · from £1,100
- Extensions over a garage · from £22,500
- Building regulations for extensions · from £850
Free site visit
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
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
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Royton
How much does an extension cost in Royton?
Using our North West England factor (×0.95), a standard-spec single-storey extension of 20 m² is a guide £38,500 to £49,500 including VAT, and a 32 m² two-storey extension £54,500 to £71,500. Your written price follows the survey.
Do I need planning permission for an extension in Royton?
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.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Royton, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Royton
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.