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Grangemouth, Forth Valley

Rear extension planning drawings in Grangemouth

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

Grangemouth sits in Forth Valley, with postcode districts including FK3. For Grangemouth 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 Grangemouth?

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 and building warrant fees in Scotland are set nationally and by value of work; we confirm both before submitting. These are guide ranges; the written quote after the survey is the figure that counts.

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

The planning route for a rear extension in Grangemouth is set by Scotland's householder rules and your council.

In Scotland an extension of more than one storey is only permitted development (Class 1B) if no part is within 10 metres of any boundary and it is no higher than the existing house, so almost every two-storey rear extension needs planning permission and a building warrant.

Scottish councils aim to decide householder applications within two months; the building warrant runs alongside.

Classes 1A and 1B do not apply in conservation areas, and listed buildings 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 Grangemouth like to extend?

Post-war semis and terraces are common around Grangemouth, and many have room for a single-storey rear extension within Class 1A limits.

How a rear extension in Grangemouth comes together

  1. 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.

  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. Approvals

    Permitted development check or planning application, then building warrant drawings and structural calculations, plus a written agreement with neighbours for any shared-wall work.

  4. Build and sign-off

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

Rear extension planning drawings near Grangemouth

We also build rear extensions in nearby Falkirk (2.5 miles) and Stenhousemuir (3.7 miles).

Other work in Grangemouth:

All rear extensions in Grangemouth

FAQ

Rear extension planning drawings questions in Grangemouth

What do rear extension planning drawings cost in Grangemouth?

As a guide, £1,000–£2,500 including VAT for a single-storey rear extension and £2,000–£3,500 for a two-storey scheme, covering the measured survey, design options and the application. The council fee is extra.

Do I need a party wall agreement?

Scotland has no Party Wall Act; we agree access and protection with your neighbour in writing instead.

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 Grangemouth?

Including FK3, and the surrounding Forth Valley area.

How long does a rear extension take to build in Grangemouth?

Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.

Can you match the brick or stone on my Grangemouth house?

We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.

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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