Annfield Plain, County Durham
Side return extension in Annfield Plain
We plan and build side return extensions for homeowners in Annfield Plain. Infilling the narrow passage beside a Victorian or Edwardian back addition. Start with a free site visit, then a written price once the design is agreed.
Annfield Plain is covered from our County Durham round, including DH9. In Annfield Plain we check the boundary line and the neighbour's gutter before drawing a side return, because a few centimetres decide whether the wall goes on or beside the boundary.
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 side return extension cost in Annfield Plain?
A side return extension in Annfield Plain is priced at £2,070–£3,420 per square metre including VAT as a guide, before kitchen fit-out and fees. North East prices are among the lowest in our range; former mining ground is the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 2 m wide × 6 m deep (12 m²) | £25,000–£41,000 |
| 2.5 m wide × 7 m deep (17.5 m²) | £36,000–£60,000 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a side return extension in Annfield Plain?
Here is how the rules in England apply to a side return extension in Annfield Plain.
Side return infills and the side leg of a wraparound are treated as side extensions in England: single-storey, no more than 4 metres high and no wider than half the original house. They are not permitted development in conservation areas, National Parks or National Landscapes, and a joined wraparound often needs a planning application because the side and rear rules apply together.
The Party Wall etc. Act 1996 applies in England: you serve notice two months before work to a shared wall, and one month before digging foundations within 3 metres (or 6 metres for deeper foundations) of a neighbour's building. Neighbours can agree in writing; if they dissent, surveyors agree an award.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Annfield Plain like to extend?
Brick terraces, colliery houses and post-war semis make up much of Annfield Plain. Former mining areas often need a coal mining risk check before foundations are designed.
How a side return extension in Annfield Plain comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
Planning and regulations
We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.
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.
Side return extensions near Annfield Plain
Neighbouring places we cover include Stanley (1.7 miles) and Consett (3.7 miles).
- Side return extension in Stanley
- Side return extension in Consett
- Side return extension in Chester-le-Street
- Side return extension in Whickham
- Side return extension in Blaydon-on-Tyne
Other work in Annfield Plain:
FAQ
Side return extension questions in Annfield Plain
Can you match the brick or stone on my Annfield Plain house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
Do I need planning permission for a rear extension in Annfield Plain?
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.
Do I need my neighbour's permission?
Not their permission, but in England and Wales you must serve party wall notices, and a neighbour can consent in writing or ask for a surveyor's award.
How much does a side return extension cost in Annfield Plain?
As a guide, £2,070–£3,420 per square metre including VAT for a standard specification. For example, 2 m wide × 6 m deep (12 m²): about £25,000–£41,000 at that rate. Your written price follows the survey.
Do you handle building control in Annfield Plain?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.