Structural alterations in Harrow

Covering Harrow

Our coverage around Harrow (HA2) also includes Brent (2 miles to the south-east) and Wembley.

Homes in London

Terraced houses dominate many London neighbourhoods, so most projects involve shared walls, narrow access and a party wall process. Conservation areas are widespread, and some boroughs have their own mansard and basement guidance.

What is included in a structural alteration in Harrow?

We arrange the structural calculations, support the floors and roof above with temporary props while the wall comes out, install the steel on padstones, then encase it for fire protection and make good. Chimney breast removals and new openings in external walls follow the same process.

Structural engineer’s design and calculations
Building control application and inspections
Steel beam installation on padstones

What will a structural alteration cost?

Indicative costs for structural alterations. London and the South East usually sit towards the top of each range.

Structural alterations	Guide price incl. VAT
Single load-bearing wall removal with steel	£3,000 to £7,500
Chimney breast removal with support	£1,800 to £4,500
Multiple walls or full open-plan remodel	£8,000 to £20,000

How is a structural alteration approved in Harrow?

In England we deal with the council’s planning team for permission or a lawful development certificate, with building control (the council or a registered building control approver) for inspections, and with neighbours under the Party Wall etc. Act 1996 where it applies.

Internal work like this does not usually need planning permission unless the house is listed or your permitted development rights have been removed. It does need building regulations approval because it affects the structure.

What can change the price or programme?

Shared chimney breasts and walls can involve the Party Wall Act.
Pipes and cables in the wall need rerouting first.

How does the project run?

Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
Construction and completion. One site lead co-ordinates every trade through to the building control certificate.

Your questions answered

How long does it take?

The structural work is usually done in a few days, with one to three weeks including making good.

Can the steel be hidden in the ceiling?

Often it can be set within the floor depth, avoiding a downstand. The engineer confirms what is possible.

Can you visit a house in Harrow to quote?

Yes. After a short call we arrange a site visit to measure up and agree what the design needs to do, then send a written price.

Other towns nearby

Learn more about structural alterations, or see every project we cover in Harrow.