Home extensions in Northumberland

Towns we cover in Northumberland

Towns we cover here include Blyth, Cramlington, Ashington, Bedlington.

• Alnwick
• Ashington
• Bedlington
• Blyth
• Cramlington
• Hexham
• Morpeth

What extensions cost in Northumberland

We publish guide prices so you can budget before anyone visits. For Northumberland they are adjusted by ×0.91, the factor we use across North East England.

Approvals for an extension in Northumberland

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 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.

What works best for Northumberland houses?

Across the North East, houses often have rear yards or modest gardens, so compact, well-lit single-storey extensions make the biggest difference.

For many houses here, double-storey extensions, utility and boot room extensions or kitchen extensions gives the most useful space for the budget.