Extensions & Loft Conversions in London

Many projects fall under Permitted Development, but some require planning permission—especially in conservation areas or for larger designs. We advise at survey stage, coordinate with architects, and help with applications if needed.

Where structural alterations are involved (e.g., RSJs, wall removals, dormers), a structural engineer provides calculations and drawings. We liaise with Building Control to ensure inspections and certifications are completed and documented.

Timelines vary with complexity: loft conversions often take 6–10 weeks; single-storey extensions 10–16+ weeks. Your programme includes key milestones, dependencies and contingency allowances for weather or lead times.

Usually, yes—though there will be noise and dust. We set up safe zones, temporary protections and plan disruptive works at suitable times. For major phases (e.g., steel installation), you may prefer to be off-site for a day or two.

Your quote is itemised. Any change is discussed in writing with a priced variation before proceeding. We maintain transparency on allowances (e.g., fixtures) and will flag cost-saving alternatives where appropriate.

Yes. We can deliver the project turnkey: structural works, first and second fix, plastering, flooring, kitchens, bathrooms and decorating—so you have one team responsible from start to finish.

You’ll receive a workmanship guarantee alongside Building Control sign-off (where applicable). Product warranties (windows, insulation, roofing) are passed to you on completion.