Kitchen under a long rooflight, a marble topped island and handleless units.

Loft conversions in Cobham.

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

Green Belt wraps around Cobham. On those plots, every added cubic metre is counted.

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A Cobham loft, measured against the Green Belt.

Green Belt
Land around the town
1973
Cobham Conservation Area designated
KT11
Detached houses on private estates

NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle loft conversions, dormers and mansards in Cobham KT11, under one contract. A main dormer loft typically runs £90k to £140k. A mansard loft runs £140k to £220k. Call 020 7731 6841, and a budget estimate typically follows within seven days.

Cobham is detached houses on generous plots, many on private estates and wooded roads.

Green Belt land surrounds the town. There, Elmbridge weighs extensions against a volume and footprint limit.

A dormer adds volume, so it joins that sum.

Cobham’s conservation areas include Cobham itself, Plough Corner and The Tilt. Roof permitted development does not apply in them.

Two Article 4 directions cover gates, fences, walls and temporary buildings, not roofs.

What Elmbridge allows on a Cobham roof.

Council
Elmbridge Borough Council, a Surrey authority, not a London one.
Green Belt
Extensions there are weighed against a volume and footprint limit.
Conservation areas
Cobham, 31 July 1973. Plough Corner, 28 November 1990. The Tilt too.
Article 4
Two Cobham directions cover gates, fences, walls and temporary buildings.
Permitted development
Elsewhere, a detached house may add 50 cubic metres of roof.

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 built work.

Dressing room lined with dark timber shelving and lit edges.

Fulham·New build

Fulham, four new-build houses with basements

In Fulham SW6, not Surrey. New houses we built, under long rooflights.

See the project

Completed work, photographs

What a loft conversion costs in Cobham.

£90k to £140kA dormer loft. A project total, from our 2026 cost guide.

Earlier extensions on a Green Belt plot can limit what the roof may add.

The guide figure is a project total.

Fees, contingency and VAT sit outside it.

Open the calculatorThe 2026 cost guideCan I build it here?

Does a Cobham loft dormer count against Green Belt limits?

On Green Belt land, yes. It adds volume the council weighs.

Earlier extensions to the house count too.

Do Cobham’s Article 4 directions affect my roof?

No. Both cover gates, fences, walls and temporary buildings.

A conservation area, if it applies, matters more.

Is a house near Plough Corner in Cobham free to add a dormer?

Not without planning. Plough Corner is a conservation area.

Class B roof rights do not apply there.

Do Cobham private estates have their own approval for roof works?

Some have their own rules for building work.

We ask for the estate’s rules before design.

Tell us about your home in Cobham.

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