Extending your home in Southport
We design and build house extensions for homes in Southport and the surrounding Merseyside area, with guide prices adjusted for the region.
- Postcode districtsPR8, PR9
- Price regionNorth West England (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation
Planning rules in Southport
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).
Covering Southport and nearby
Postcode districts we cover around Southport include PR8, PR9. Nearby, we also take on projects in Formby (7 miles), Maghull (9 miles), Litherland (12 miles), Kirkby (12 miles), Bootle (12 miles). Just over the Lancashire border, Lytham St Annes is about 7 miles away.
Southport extension prices at a glance
We publish guide prices so you can budget before anyone visits. For Southport they are adjusted by ×0.95, the factor we use across North West England.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Single-storey rear extensions | 20 m² | £38,500 – £49,500 |
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
| Double-storey extensions | 32 m² | £54,500 – £71,500 |
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
Choosing the right extension in Southport
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 Southport are kitchen extensions, single-storey rear extensions and double-storey extensions, depending on the garden and how the house is laid out.
Choose an extension type
- Single-storey rear extensions · from £19,500
- Bungalow extensions · from £24,500
- Home office extensions · from £15,000
- Conservatory replacement extensions · from £19,000
- Utility and boot room extensions · from £13,000
- Porch extensions · from £3,800
- Pitched roof extensions · from £21,000
- Extensions over a garage · from £22,500
- Side return extensions · from £17,000
- Wraparound extensions · from £34,000
- Flat roof extensions · from £19,500
- Orangery extensions · from £28,500
- Side extensions · from £20,500
- Bedroom extensions · from £24,500
- Double-storey extensions · from £36,000
- Extension plans and drawings · from £1,100
- Kitchen extensions · from £25,500
- Planning permission for extensions · from £300
- Timber frame extensions · from £19,500
- Building regulations for extensions · from £850
- Annexe extensions · from £52,000
- Glass box extensions · from £28,500
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
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 Southport
How much does an extension cost in Southport?
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.
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.
Do I need planning permission for an extension in Southport?
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 Southport?
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.
Do you cover all of Southport?
Yes, including the surrounding parts of Merseyside. Site visits are free and there is no obligation.
Book a free site visit in Southport
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.