Rear courtyard with a glass rooflight set into the paving.

Planning consultants in Cobham.

Fulham · SW6 · Fulham, four new-build houses with basementsCompleted work, photograph

Planning for Cobham houses, where Green Belt arithmetic often decides the size. Article 4 even reaches gates and walls.

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Get a cost estimateCall 020 7731 6841

Cobham and the Green Belt, measured before drawn.

57%
Of Elmbridge is Green Belt
25%
The Green Belt extension limit
KT11
Elmbridge Borough Council

NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle planning applications and appeals in Cobham KT11, under one contract. Fees are priced per project by our own quantity surveyor, from the actual scope. Call 020 7731 6841, and a budget estimate typically follows within seven days.

Around the town, much of the land is Green Belt. That single designation shapes more schemes here than any design taste.

Green Belt extensions are held to a 25% limit on volume and footprint. The baseline is the original dwelling, so earlier additions eat into it. We rebuild that history from old consents and a measured survey.

Space below ground is treated differently. DM18 allows a basement that is wholly subterranean and within the existing footprint. Light wells must stay discreet, or the volume counts towards the 25%.

Heritage adds a second layer. Cobham itself became a conservation area in July 1973. Plough Corner followed in November 1990. The Tilt is a third.

Two Article 4 directions also apply locally. They bring gates, fences, walls and temporary buildings under control. A new entrance or boundary can therefore need an application.

What Elmbridge tests on a Cobham plot.

Council
Elmbridge Borough Council. About 57% of the borough is Green Belt.
Green Belt basements
DM18, April 2015. Wholly underground and inside the footprint.
Green Belt extensions
Capped at 25% of volume and footprint. A bigger basement counts towards it.
Conservation areas
Cobham, 31 July 1973. Plough Corner, 28 November 1990.
Article 4
Two directions here bring gates, fences, walls and temporary buildings into planning.

Source: Elmbridge Development Management Plan 2015, Policy DM18, and its conservation areas list. Read on 25 October 2026. Policies change, so we read them again for your address.

Our nearest new houses.

Staircase with pale treads and lit niches in the wall.

Fulham·New build

Fulham, four new-build houses with basements

Our nearest new build is in Fulham SW6, four houses with basements. Surrey work is still ahead of us.

See the project

Completed work, photographs

What planning costs in Cobham.

A Green Belt case needs careful volume figures, which we price in.

You see the fee in writing before the survey.

Open the calculatorThe 2026 cost guide

What is the Green Belt extension limit on a Cobham house?

A quarter of the original volume and footprint.

Previous extensions already use some of that allowance.

Does a basement count against the Cobham Green Belt allowance?

Not if it is wholly underground and within the existing footprint.

Bigger excavations or prominent light wells are added to the total.

Is a new entrance gate in Cobham a planning matter?

It may be. Local Article 4 directions cover gates, fences and walls.

We check your address against them first.

When were Cobham’s conservation areas designated?

Cobham in July 1973, and Plough Corner in November 1990.

The Tilt is also designated.

Tell us about your home in Cobham.

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A phone number or an email is enough. We only need one.

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What is the work?

We call you back within the hour, in working hours. Your details go to the studio and our email system. Read the privacy note.