Covering Portsmouth
Our coverage around Portsmouth (PO5) also includes Gosport, Fareham and Ryde.
Homes in the South East
Many South East homes are inter-war or post-war semis and detached houses with room for rear and side extensions, while historic town centres and villages bring conservation area and listed building controls.
What does a house-to-flat conversion involve?
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
- Bin, cycle and amenity space works
What is the guide price for a house-to-flat conversion in Portsmouth?
Indicative costs for house-to-flat conversions. London and the South East usually sit towards the top of each range.
Priced on survey.
How is a house-to-flat conversion approved in Portsmouth?
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.
What should Portsmouth homeowners check first?
- Some councils restrict the loss of family houses or limit flat conversions in certain streets.
- Mortgage lenders and freehold arrangements need early legal advice.
From first call to completion
- Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
- We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
- Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
- Build and hand over. Our teams build to the programme, building control inspects, and you get the completion paperwork at the end.
What people ask before starting
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.
What are the main building regulations issues?
Fire separation between flats, protected escape routes, sound insulation and separate services.
Do you work in Portsmouth?
Yes. Portsmouth is within our coverage for house-to-flat conversions, along with nearby Gosport and Fareham.
Also covering
- House-to-flat conversions in Gosport
- House-to-flat conversions in Fareham
- House-to-flat conversions in Ryde
- House-to-flat conversions in Havant
Learn more about house-to-flat conversions, or see every project we cover in Portsmouth.