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Chepstow, Newport and Monmouthshire

Rear extension planning drawings in Chepstow

Measured survey, design options, planning drawings and the application, handled for you. We design, get the approvals for and build rear extensions in Chepstow and the surrounding area, with one contract from the first survey to building control sign-off.

Chepstow is covered from our Newport and Monmouthshire round, including NP16. For Chepstow homes we start with a measured survey, then draw options before anything is submitted.

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 Chepstow?

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. Planning fees in Wales are set by the Welsh Government; we confirm the current householder fee when we prepare the application. Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.

Do you need planning permission for a rear extension in Chepstow?

Here is how the rules in Wales apply to a rear extension in Chepstow.

Welsh rules allow a two-storey rear extension without an application only where the ground floor is no deeper than 4 metres, the upper floor no deeper than 3 metres and at least 10.5 metres remains to the rear boundary. Most homeowners still apply for householder planning permission.

Welsh councils aim to decide householder applications within 8 weeks.

Conservation areas, National Parks and National Landscapes restrict permitted development in Wales, and listed buildings need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development or a householder planning application.

What are homes in Chepstow like to extend?

Chepstow has Victorian terraces near the centre and semis further out. Welsh permitted development allows up to 4 metres at the rear for many houses.

How a rear extension in Chepstow comes together

  1. Survey visit

    We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.

  2. Options and costs

    We draw layout options and price each one, so the budget shapes the design rather than surprising you later.

  3. Approvals

    Permitted development check or householder planning application, then Building Regulations drawings to the Welsh Approved Documents and structural calculations, plus party wall notices where they apply.

  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 Chepstow

Close by, we work in Caldicot, about 5.1 miles away, and Thornbury, about 7.1 miles away.

Other work in Chepstow:

All rear extensions in Chepstow

FAQ

Rear extension planning drawings questions in Chepstow

Is the site visit in Chepstow free?

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

Do I need planning permission for a rear extension in Chepstow?

Often not for a single-storey rear extension of up to 4 metres under Welsh permitted development. Wales has no prior approval route for deeper extensions.

Do neighbours get consulted?

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

What postcode areas do you cover around Chepstow?

Including NP16, and the surrounding Newport and Monmouthshire area.

Can I live at home while the extension is built?

Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.

Who will build my extension?

Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.

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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