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Heavitree, Devon

Rear extension planning drawings in Heavitree

Measured survey, design options, planning drawings and the application, handled for you. If you live in Heavitree 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.

Heavitree sits in Devon, with postcode districts including EX1, EX2 and EX4. Rear extension applications in Devon are householder applications, which councils aim to decide within about eight weeks.

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 Heavitree?

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 Heavitree?

The planning route for a rear extension in Heavitree 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. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.

What are homes in Heavitree like to extend?

Stone-built and rendered houses are common around Heavitree, so matching the walling is a design decision in its own right: natural stone, reconstituted stone or a render finish across old and new.

How a rear extension in Heavitree 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. Drawings and budget

    Floor plans and elevations for the options, each with a guide price.

  3. Planning and regulations

    We take the design through the right planning route, then produce the construction drawings and engineer's calculations for building control.

  4. Build and sign-off

    We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.

Rear extension planning drawings near Heavitree

From Heavitree, the nearest places we also cover are Exeter (1.4 miles) and Exmouth (8.2 miles).

Other work in Heavitree:

All rear extensions in Heavitree

FAQ

Rear extension planning drawings questions in Heavitree

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.

Is the site visit in Heavitree free?

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

Do neighbours get consulted?

Yes for a full application: the council writes to them or puts up a site notice.

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.

Do you handle building control in Heavitree?

Yes. We apply to the council or a registered building control approver and hand over the completion certificate.

What postcode areas do you cover around Heavitree?

Including EX1, EX2 and EX4, and the surrounding Devon area.

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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