London · UK introductions
Loft Conversions in London
Dormer, hip-to-gable and mansard loft conversions across London. Regulations, costs and quotes from independent loft specialists.
Loft conversions turn unused roof space into bedrooms, offices or bathrooms. In London, rear dormers on terraces and hip-to-gable conversions on semis are common; mansards appear more often where roof form and planning allow.
Building Regulations always apply. Planning permission depends on volume, roof design and whether the property is a flat or in a conservation area. Our loft regulations guide covers the national rules; your borough page notes local considerations.
We introduce homeowners to independent builders. We do not carry out loft work ourselves.
London boroughs
More boroughs: all 32 London boroughs & the City.
Questions
Is planning permission needed for a loft conversion?
Many house loft conversions fall under permitted development if volume and design limits are met. Flats, mansards and conservation or Article 4 properties usually need planning permission.
What does a London loft conversion cost?
Indicative ranges vary widely by type (Velux-style, dormer, mansard) and borough. Budget also for stairs, electrics, insulation and Building Regulations. Get local quotes.
Request quotes · UK introductions
Request quotes for loft conversions
Tell us about your extension, loft or renovation anywhere in the UK. With your consent, we pass your enquiry to up to 3 independent builders who advertise with us, so they can contact you with quotes. We do not carry out building work ourselves.
- Free to use, no obligation
- Up to 3 builders, only with your consent
- Always check each builder’s insurance, references and written quote