House-to-Flats & Room Conversions in London
House-to-Flats & Room Conversions services across West and North West London, subject to the agreed scope.
House-to-Flats & Room Conversions
D-Core Construction specialises in converting large houses into two or more self-contained flats, and converting garages and annexes into habitable rooms across West London and North West London. Whether you are a property investor looking to maximise yield, or a homeowner wanting to create independent space for family while adding long-term value, we deliver the full structural and fit-out scope.
A house-to-flats conversion requires careful planning — change of use from Class C3 (single dwelling) to two or more self-contained units requires planning permission from your local borough. Once approved, the works involve structural separation between floors, independent utility services for each flat, sound insulation to Part E of the Building Regulations, fire safety compliance, and full Building Control sign-off.
We manage the entire process: from helping you appoint the right planning consultant and structural engineer, through to the fit-out of each flat to lettable standard. Every conversion we deliver meets the latest Building Regulations and is ready for freeholder or leasehold title splitting.
What's Included?
Why Choose D-Core?
- Extensive experience delivering house-to-flat conversions across West and North West London
- Single project manager throughout — from planning application to handover
- In-house structural, carpentry, plumbing, electrical, and finishing teams
- Planning and Building Control guidance as part of our service
- Detailed, transparent quotation based on the agreed scope
- Builds designed to be rent-ready from day one
Our Process
Planning & Feasibility
We assess your property and advise on the feasibility of conversion — number of flats, layout options, planning prospects in your borough, and likely Building Regulations requirements. We can refer you to a trusted planning consultant to manage the application.
Structural Design
A structural engineer assesses the floor structure and designs any necessary strengthening or separation works. The acoustic specification is agreed at this stage to ensure compliance with Part E from the start.
Construction
Floor and ceiling build-up for acoustic separation, structural alterations, independent utility connections, kitchen and bathroom fit-outs, fire doors, alarm systems — all completed to a strict programme.
Building Control & Handover
We support all Building Control inspections, arrange acoustic testing where required, and hand over both flats in a fully decorated, lettable condition with all Building Control documentation.
Pricing Guidance
Project costs depend on size, specification, existing conditions, and the required scope of works. A detailed quotation can be provided once the project requirements and site constraints have been reviewed.
For an accurate, detailed quote for your specific project, please contact us for a free site visit.
Frequently Asked Questions
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