Terrace with clipped topiary, stone paving and a metal pergola.

Loft conversions in Highgate.

North London · N2 · North London house, reconfigured and fitted outCompleted work, photograph

Lofts for Highgate houses, on both sides of the borough line. Drawn to the neighbourhood plan, then built by one team.

A Highgate loft, kept to the rear.

DH5
The neighbourhood plan’s roof policy
Two councils
Haringey and Camden share Highgate
£215 to £425
A sq ft, our loft band

NU Projects is a design and build company in Fulham SW6, founded in 2010. We handle loft conversions, dormers and mansards in Highgate N6, under one contract. A loft runs £215 to £425 a sq ft, construction only. Call 020 7731 6841, and a budget estimate typically follows within seven days.

Highgate sits on a hill, split between Haringey and Camden.

Its houses run from Georgian terraces to large Victorian and Edwardian semis.

Many roofs are seen from a distance, because the ground falls away.

The Highgate Neighbourhood Plan, adopted by both councils in 2017, guides roof work.

Its Policy DH5 keeps dormers and roof extensions to the rear, in most cases.

So we design a Highgate loft from the back of the house first.

What the plan allows on a Highgate roof.

Council
Haringey or Camden, by address. The Highgate Neighbourhood Plan applies on both sides.
Roofs
Policy DH5. Dormers and roof extensions respect the roof form, and stay to the rear.
Front dormers
Unlikely to be accepted on a terrace whose roofline is largely unimpaired.
Chimneys
Chimneystacks that add to the street should be kept. Roof materials should match.
Conservation areas
One in each borough, plus the Holly Lodge Estate beside them.
Permitted development
None for a dormer in a conservation area. Planning permission is needed.

Source: The Highgate Neighbourhood Plan 2017, Policies DH3, DH5 and DH7. Read on 6 October 2026. Policies change, so we read them again for your address.

What loft conversion costs in Highgate.

£215 to £425a sq ft, construction only. Our loft band.

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

£140k to £220kA mansard loft. A project total, from our 2026 cost guide.

A large Highgate semi often gives a wide rear roof to work with.

The band is per square foot, construction only. The guide figures are project totals.

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

Open the calculatorThe 2026 cost guide

Can I put a dormer on the front of my Highgate house?

Rarely. Policy DH5 keeps dormers to the rear in most cases.

A front dormer may fit where the street already has many.

On an unimpaired terrace, it is unlikely to be accepted.

Does the Highgate Neighbourhood Plan cover my house?

It covers Highgate on both sides of the Haringey and Camden line.

Both councils adopted it in 2017.

We confirm the boundary for your address first.

Do I have to keep the chimneys on a Highgate roof?

Where they add to the street, the plan asks for them to stay.

We route new flues and steels around them.

Will my Highgate loft need a party wall notice?

On a semi or a terrace, usually yes.

Steel beams set into a shared wall need a party structure notice.

That notice gives the neighbour two months.

What does a loft conversion in Highgate cost?

Our loft band runs £215 to £425 a sq ft, construction only.

A dormer loft totals £90k to £140k in our 2026 cost guide.

A mansard totals £140k to £220k.

Tell us about your home in Highgate.

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?