Covering Northolt
Alongside Northolt, we also cover Greenford, Harrow (3 miles to the north-east) and Southall.
Homes in London
Much of London’s housing is Victorian and Edwardian terraces, which is why side return extensions, rear dormers and mansards are so common. Many streets are in conservation areas, and several boroughs use Article 4 directions that remove some permitted development rights.
What do you get with a house-to-flat conversion?
A house-to-flat conversion divides a single house into two or more self-contained flats, each with its own front door, kitchen and bathroom. It always needs planning permission and full building regulations approval, particularly for fire separation and sound insulation between flats.
- Feasibility check against local planning policy
- Planning application and layouts to space standards
- Fire separation and sound insulation between flats
What is the guide price for a house-to-flat conversion in Northolt?
Guide prices for house-to-flat conversions, including VAT where it applies. Your fixed price is confirmed in writing after the survey.
Priced on survey.
What approvals does a house-to-flat conversion need in England?
Projects in England go through two separate checks. Planning (or confirmation that the work is permitted development) comes from the district, borough or unitary council, and building regulations approval comes from the council’s building control team or a registered building control approver. Where work touches a shared wall or digs near a neighbour’s foundations, the Party Wall etc. Act 1996 applies.
Dividing a house into flats always needs planning permission in England. Councils assess flat sizes (many use the nationally described space standard), parking, bins, cycle storage and the effect on family housing supply.
What can change the price or programme?
- Each flat needs its own utilities and metering.
- Sound insulation between flats is tested on completion.
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.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
- Construction and completion. One site lead co-ordinates every trade through to the building control certificate.
Questions about a house-to-flat conversion in Northolt
Does converting a house into flats need planning permission?
Yes, always. Subdividing a house into flats is development under planning law.
How much does a flat conversion cost?
It varies too much to give a reliable guide figure, so we price each one on survey. The reduced 5% VAT rate can apply where the number of dwellings changes.
Who deals with the council for a project in Northolt?
We do. We prepare the drawings, submit planning or permitted development paperwork if needed, and arrange building control inspections.
House-to-flat conversions near Northolt
- House-to-flat conversions in Greenford
- House-to-flat conversions in Harrow
- House-to-flat conversions in Southall
- House-to-flat conversions in Brent
Learn more about house-to-flat conversions, or see every project we cover in Northolt.

