Home extensions in Blyth
From a small utility to a two-storey addition, we take on house extensions throughout Blyth, starting with a free visit and a planning check.
- Postcode districtsNE24
- Price regionNorth East England (×0.91)
- Planning rulesEngland
- Site visitFree, no obligation
What works best for Blyth houses?
The North East has many brick terraces, colliery-era housing and post-war semis, with rear extensions and kitchen extensions the most common requests.
Depending on the plot, single-storey rear extensions and utility and boot room extensions are often the strongest options, with double-storey extensions worth considering where there is room.
Do extensions in Blyth 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 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).
Blyth extension prices at a glance
Prices on this page use our North East England factor of ×0.91, include VAT at 20% and cover the build; your written price follows a survey and agreed drawings.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Conservatory replacement extensions | 14 m² | £27,000 – £35,500 |
| Side return extensions | 11 m² | £24,000 – £30,500 |
| Wraparound extensions | 25 m² | £52,000 – £66,000 |
| Double-storey extensions | 32 m² | £52,000 – £68,500 |
| Extensions over a garage | 12 m² | £22,500 – £29,500 |
| Single-storey rear extensions | 20 m² | £37,000 – £47,500 |
| Orangery extensions | 16 m² | £40,500 – £51,000 |
Covering Blyth and nearby
Postcode districts we cover around Blyth include NE24. The same team covers Bedlington (3 miles), Ashington (4 miles), Cramlington (4 miles), Morpeth (8 miles), Alnwick (23 miles), all within easy reach. Just over the Tyne and Wear border, Whitley Bay is about 7 miles away.
All extension types we build in Blyth
- Kitchen extensions · from £24,500
- Side return extensions · from £16,000
- Side extensions · from £20,000
- Bedroom extensions · from £23,500
- Pitched roof extensions · from £20,000
- Flat roof extensions · from £19,000
- Extension plans and drawings · from £1,050
- Annexe extensions · from £50,000
- Timber frame extensions · from £19,000
- Home office extensions · from £14,500
- Planning permission for extensions · from £300
- Double-storey extensions · from £34,500
- Building regulations for extensions · from £800
- Wraparound extensions · from £32,500
- Porch extensions · from £3,600
- Bungalow extensions · from £23,500
- Single-storey rear extensions · from £19,000
- Conservatory replacement extensions · from £18,000
- Glass box extensions · from £27,000
- Utility and boot room extensions · from £12,500
- Orangery extensions · from £27,000
- Extensions over a garage · from £21,500
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
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 Blyth
How much does an extension cost in Blyth?
Using our North East England factor (×0.91), a standard-spec single-storey extension of 20 m² is a guide £37,000 to £47,500 including VAT, and a 32 m² two-storey extension £52,000 to £68,500. Your written price follows the survey.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
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.
How long does an extension take in Blyth?
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.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Blyth, and the guide-price tool gives a range for your own size and finish in about a minute.
Book a free site visit in Blyth
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.