What is a side return extension?
A side return extension fills the narrow passage that runs alongside the back addition of many Victorian and Edwardian terraced houses. It widens a galley kitchen into a proper kitchen-diner, usually with a sloping glazed roof to keep the room bright.
How much does a side return extension cost in Whitley Bay?
In Whitley Bay, a side return extension typically costs £2,050–£2,950 per m² of floor area, including VAT at 20% (standard rate). For a typical 12 m² project that is roughly £24,500–£35,500. Prices across the North East are typically 10% below the UK average for this kind of work, which is reflected in the range for Whitley Bay. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (8 m²) | £16,500–£23,500 |
| Typical project (12 m²) | £24,500–£35,500 |
| Larger project (17 m²) | £35,000–£50,000 |
| Rate per m² | £2,050–£2,950 |
Your quote will depend mainly on:
- Steel beams and propping of the back addition
- Glazed roof specification
- Access through the house for materials
- Moving drains and soil stacks
For a figure based on your own measurements, try the guide price tool, then book a free home visit for a fixed quote.
Do you need planning permission for a side return extension in Whitley Bay?
The approval route for Whitley Bay is set by planning law in England. In England a side return infill is treated as a side extension. It may be permitted development if it is single-storey, no more than 4 metres high and no wider than half the original house, but not in a conservation area. Because side returns sit on the boundary, party wall notices are almost always needed.
Where work involves a shared wall, building on the boundary, or digging foundations within 3 metres of a neighbour’s building and deeper than its foundations (or within 6 metres for deeper work), the Party Wall etc. Act 1996 applies and notices must be served before work starts.
If the answer is not clear-cut, we can apply for formal confirmation before you commit to the build.
What we handle
On a typical side return extension we handle:
- Drawings and planning or permitted development check
- Floor levelling, heating and electrics
- Party wall advice and notices
- Steel beams to remove the side wall
- Survey of party walls, drains and the existing back addition
- Building control sign-off
How long does it take?
Build time is typically 10 to 14 weeks on site. Design and approvals come first and typically take 3 to 4 months, depending on the approval route.
Building in Whitley Bay
Across the North East, colliery-era terraces and newer estates sit side by side, so the right project depends on the house type.
Our Whitley Bay coverage includes postcode districts NE26, and we also work in nearby places such as North Shields, Tynemouth and South Shields.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Design and pricing
Design options, then a fixed quote based on the chosen drawings and specification.
- 03
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions about side return extensions in Whitley Bay
Will I need a party wall agreement?
Almost certainly in England and Wales, because side returns sit on or near the boundary. Notices must be served before work starts, and a party wall surveyor may be appointed if the neighbour does not consent.
How much does a side return extension cost in Whitley Bay?
In Whitley Bay, a side return extension typically costs £2,050–£2,950 per m² of floor area, including VAT at 20% (standard rate). A typical 12 m² project comes to roughly £24,500–£35,500. Your fixed price depends on the survey and drawings.
Do you build side return extensions in Whitley Bay?
Yes. We build side return extensions across Whitley Bay, including postcodes NE26. Every project starts with a free home visit.
Does a side return extension need planning permission?
It depends on the design and where you live. In England a side return can sometimes be permitted development, but side extensions in conservation areas and on many terraced streets need an application. We check your house’s rights before designing.
How much space does a side return add?
Typically 1.5 to 2.5 metres of width along the back addition. It often turns a narrow galley kitchen into a family kitchen-diner.