Indoor swimming pool two floors below the street, lit along both walls.

Basement swimming pools in Oxshott.

Kensington · W8 · Kensington new-build housesCompleted work, photograph

Indoor pools under large Oxshott houses, with Elmbridge’s flood rules read first. Designed, engineered and built by one team.

What an Oxshott pool has to carry.

No basement SPD
A pool hall is judged as an extension
Flood SPD, 2016
A pool may be considered in Zones 2 and 3a
BS 8102 Grade 3
Waterproofing for a habitable pool hall

NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle basement swimming pools in Oxshott KT22, under one contract. A basement runs £450 to £780 a sq ft, construction only. Call 020 7731 6841, and a budget estimate typically follows within seven days.

Large Oxshott plots usually hold a garden worth keeping. A pool under the house leaves the lawn, the trees and the view alone. It also gives you swimming in every month.

Elmbridge has no basement policy, so a pool hall is judged as an extension. In Zones 2 and 3a the Flood Risk SPD lets a pool be considered. Zone 3b allows no basement, and Zones 2 and 3a bar bedrooms. Inside the Green Belt, DM18 keeps the pool hall within the footprint.

The slab and walls are engineered for the weight of the water. A plant room holds filtration, heating and air handling. Dehumidifying the hall protects the house above it. Waterproofing follows BS 8102 Grade 3.

We have not yet built in Surrey. Our nearest pools are in Kensington W8 and Knightsbridge. One team designs, prices and builds the pool, the plant and the structure.

What the council allows in Oxshott.

Council
Elmbridge Borough Council, which judges a pool hall as an extension.
Flood SPD
A pool may be considered in Zones 2 and 3a, never 3b.
Green Belt
DM18 wants the pool hall wholly underground, inside the footprint.
Birds Hill estate
Its 2015 byelaws name pools, with a deposit and set hours.
Plant room
Filtration, heating and dehumidification need a dedicated room.

Source: Elmbridge Development Management Plan 2015, Policy DM18, and Flood Risk SPD 2016. Read on 12 October 2026. Policies change, so we read them again for your address.

What a basement pool costs in Oxshott.

£450 to £780a sq ft, construction only. Our basement band.

£180k to £300kConverting an existing basement. A project total, from our 2026 cost guide.

£500k to £900k+Digging a new basement. A project total, from our 2026 cost guide.

These are two kinds of figure. The band is a rate per square foot, construction only.

The cost guide figures are whole project totals.

Fees, party wall costs, contingency and VAT sit outside them.

Open the calculatorThe 2026 cost guide

Can an Oxshott house have a basement swimming pool?

Often, yes. Elmbridge has no basement policy, so a pool is judged as an extension.

Flood zone and Green Belt status are checked first.

We test the plot before you commit.

How does flood risk affect a pool in Oxshott?

Zone 3b allows no basement at all.

Zones 2 and 3a may allow a pool, but not a bedroom.

Where groundwater is a risk, a hydrology report is needed.

Does the Birds Hill estate allow a pool in Oxshott?

Its 2015 byelaws name swimming pools among works that carry charges.

They also set a deposit, working hours and a completion period.

We confirm the current terms and any consent step with the company.

How is an Oxshott pool hall kept dry and fresh?

Waterproofing follows BS 8102 Grade 3.

A dehumidifier and air handling plant control the moisture.

Both sit in a plant room beside the hall.

What does a swimming pool cost to build in Oxshott?

Our basement band is £450 to £780 a sq ft, construction only.

The pool, plant and finishes are priced with the structure.

Tell us about your home in Oxshott.

Your name and one way to reply are enough. It goes straight to the studio.

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

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What is the work?