Northumberland
Rear extensions in Cramlington
Rear extensions in Cramlington: single-storey and two-storey extensions, side returns, wraparounds and glass-led designs, planned around brick terraces and colliery houses and the English rules.
Cramlington is in Northumberland, with postcode districts including NE22, NE23 and NE24. The nearest places we also cover are Bedlington (3.1 miles) and Blyth (4.1 miles).
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Rear extensions we build in Cramlington
- Single-storey rear extensions
- Two-storey rear extensions
- Kitchen-diner rear extensions
- Side return extensions
- Wraparound extensions
- Glazed and glass-box rear extensions
- Rear extensions for terraced houses
- Rear extensions for semi-detached houses
- Rear extensions for bungalows
- Rear extension plans and planning applications
Also available across Northumberland:
- Rear extensions for detached houses
- Flat-roof rear extensions
- Pitched and lean-to roof rear extensions
- Knocking through to a rear extension
- Roof lanterns and rooflights for rear extensions
- Permitted development rear extensions
- Larger home extension prior approval (England)
- Building Regulations for rear extensions
Rear extension prices in Cramlington
North East prices are among the lowest in our range; former mining ground is the main foundation variable.
| Example | Guide inc VAT |
|---|---|
| Single-storey, 3 m × 4 m (12 m²) | £20,500–£33,500 |
| Single-storey, 4 m × 6 m (24 m²) | £41,000–£67,000 |
| Two-storey, 3 m × 5 m footprint (30 m²) | £48,500–£73,000 |
| Side return, about 14 m² | £29,000–£48,000 |
| Wraparound, about 25 m² | £49,500–£81,000 |
What are homes in Cramlington like to extend?
Brick terraces, colliery houses and post-war semis make up much of Cramlington. Former mining areas often need a coal mining risk check before foundations are designed.
Planning rules for Cramlington
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part is within 2 metres of a boundary.
England also has the larger home extension route: a single-storey rear extension of up to 6 metres on an attached house or 8 metres on a detached house, after prior approval from the council. The council notifies your neighbours and has 42 days to decide; the fee is £249 (£310 for applications made from 8 December 2026). The route is not available on designated land such as conservation areas.
Planning and Building Regulations are separate in England: even a permitted development extension is inspected for foundations, drainage, structure, insulation, fire safety and ventilation, through the council or a registered building control approver, ending with a completion certificate.
Nearby towns
FAQ
Questions people ask
How much is a rear extension in Cramlington?
A 3 m × 4 m single-storey rear extension is about £20,500–£33,500 including VAT at our North East England guide rates; the written price follows a survey.
Do I need planning permission in Cramlington?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
Is the site visit in Cramlington free?
Yes, with no obligation.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.