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Newton Aycliffe, County Durham

Rear extension planning drawings in Newton Aycliffe

Measured survey, design options, planning drawings and the application, handled for you. If you live in Newton Aycliffe and want to know what a rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.

Newton Aycliffe sits in County Durham, with postcode districts including DL4 and DL5. Planning applications in Newton Aycliffe go to the local planning authority covering Newton Aycliffe, and we check its local design guidance for rear extensions before drawing.

Book a free site visit

Tell us about the house and we'll call to arrange a free, no-obligation visit.

What do rear extension planning drawings cost in Newton Aycliffe?

As a guide, £1,000–£2,500 including VAT for a single-storey rear extension, or £2,000–£3,500 for a two-storey scheme. A householder planning application in England costs £548 (£575 for applications made from 8 December 2026), and a lawful development certificate for proposed work costs half the householder fee. 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 rear extension in Newton Aycliffe?

The planning route for a rear extension in Newton Aycliffe is set by England's householder rules and your council.

England's rules allow a rear extension of more than one storey without an application only when it is no deeper than 3 metres and at least 7 metres from the boundary opposite the rear wall, and never on designated land. Most two-storey schemes need householder planning permission.

Councils aim to decide householder applications within 8 weeks of validation, and prior approval within 42 days.

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 Newton Aycliffe like to extend?

Brick terraces, colliery houses and post-war semis make up much of Newton Aycliffe. Former mining areas often need a coal mining risk check before foundations are designed.

How a rear extension in Newton Aycliffe comes together

  1. 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.

  2. Design and guide price

    Two or three layout options with a guide price for each, so you choose the design knowing what it costs.

  3. Paperwork handled

    Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.

  4. Fixed price and build

    A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.

Rear extension planning drawings near Newton Aycliffe

Neighbouring places we cover include Bishop Auckland (4.9 miles) and Spennymoor (5.7 miles).

Other work in Newton Aycliffe:

All rear extensions in Newton Aycliffe

FAQ

Rear extension planning drawings questions in Newton Aycliffe

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.

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.

Can planning conditions affect the build?

Yes, for example matching materials or obscure glazing. We plan for them.

What postcode areas do you cover around Newton Aycliffe?

Including DL4 and DL5, and the surrounding County Durham area.

Do I need planning permission for a rear extension in Newton Aycliffe?

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 Newton Aycliffe free?

Yes. We visit, measure up and talk through the options with no cost and no obligation.

Next step

See what your rear extension would cost

Get a guide price online in a couple of minutes, or book a free site visit and we'll measure up and talk you through the planning route.

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