Blyth, Northumberland
Kitchen-diner rear extension in Blyth
We plan and build kitchen-diner rear extensions for homeowners in Blyth. An open-plan kitchen, dining and family room that opens straight onto the garden. Start with a free site visit, then a written price once the design is agreed.
We cover Blyth (NE23 and NE24) as part of our Northumberland work. We usually keep the working kitchen where the old one was and put the dining table in the new space by the doors, which suits most Blyth homes.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a kitchen-diner rear extension cost in Blyth?
Guide prices for a kitchen-diner rear extension in Blyth start from our North East England rate of £1,710–£2,790 per square metre, including VAT. North East prices are among the lowest in our range; former mining ground is the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4 m deep (12 m²) | £20,500–£33,500 |
| 4 m wide × 5 m deep (20 m²) | £34,000–£56,000 |
| 4 m wide × 6 m deep (24 m²) | £41,000–£67,000 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a kitchen-diner rear extension in Blyth?
The planning route for a kitchen-diner rear extension in Blyth is set by England's householder rules and your council.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres 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.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Blyth like to extend?
Terraces and semis are typical around Blyth. On terraces a single-storey rear extension across the back yard is usually the practical choice; semis often have room for more.
How a kitchen-diner rear extension in Blyth comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Kitchen-diner rear extensions near Blyth
Neighbouring places we cover include Bedlington (3.4 miles) and Ashington (4.1 miles).
- Kitchen-diner rear extension in Bedlington
- Kitchen-diner rear extension in Ashington
- Kitchen-diner rear extension in Cramlington
- Kitchen-diner rear extension in Whitley Bay
- Kitchen-diner rear extension in Morpeth
Other work in Blyth:
FAQ
Kitchen-diner rear extension questions in Blyth
How long does a rear extension take to build in Blyth?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
What postcode areas do you cover around Blyth?
Including NE23 and NE24, and the surrounding Northumberland area.
Can I add a utility room?
Often. A narrow utility or boot room along one side keeps the washing machine out of the open-plan space.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Is the site visit in Blyth free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.
How much does a kitchen-diner rear extension cost in Blyth?
As a guide, £1,710–£2,790 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £20,500–£33,500 at that rate. Your written price follows the survey.