Cinema room with a deep corner sofa and copper shelving.

Basement cinema rooms in St John’s Wood.

Chelsea · SW3 · Chelsea townhouse, full refurbishmentCompleted work, photograph

St John’s Wood villas have wide plots and wide floors. A cinema can be a full room, with a lobby and rack room.

A St John’s Wood cinema, under the villa.

Wide villa floors
The room can be large and well proportioned.
Half the garden
The basement may run under no more than half.
One team
NU designs, prices and builds.

NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle basement cinema rooms in St John’s Wood NW8, 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.

St John’s Wood is detached and semi detached villas in large gardens. Plots are wide and quiet. A cinema can be a full room with a proper lobby. Families often want one space for films and for sport.

Westminster allows one storey below the lowest original floor. A large site with good access may be allowed more. The basement may run under no more than half the garden. An undeveloped margin stays around the boundary.

A wide villa floor suits raked seating, with a step behind the front row. The ceiling can rise over the back. A big screen needs a clear throw from the projector. We design the sight lines before we fix the structure.

Under Fulham houses we have dug, waterproofed and finished whole lower floors. In Chelsea, a townhouse of ours holds a cinema with copper shelving. A single contract covers the structure, the sound and the screen.

What the council allows in St John’s Wood.

Council
City of Westminster. Hampstead, to the north, is Camden, with different rules.
Depth
City Plan Policy 50. One storey below the lowest original floor. A large site with good access may be allowed more.
The garden
It may run under no more than half the garden. An undeveloped margin is kept around the boundary.
Soil and trees
A metre of soil and a drainage layer go over it. Trees may need 1.5 metres.

Source: Westminster’s City Plan, January 2026 edition, Policy 50. Read on 2 October 2026. Policies change, so we read them again for your address.

What a basement cinema costs in St John’s Wood.

£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

How large can a St John’s Wood villa cinema be?

The half garden limit sets the outer edge.

Inside it, a villa floor can hold a full room and a lobby.

Can a St John’s Wood cinema room have two rows of raked seats?

Yes, where the ceiling allows a step behind the front row.

We test sight lines on the drawings first.

What does a St John’s Wood basement cinema cost?

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

A wide villa floor means a larger area, so a larger total.

Do trees limit a St John’s Wood basement cinema?

They can. Trees may need up to 1.5 metres of soil above.

That cover affects how deep the slab sits.

Why have a separate rack room in a St John’s Wood cinema?

Equipment makes heat and fan noise.

A rack room keeps both away from the seats.

Tell us about your home in St John’s Wood.

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.

Optional, it helps us prepare
What is the work?