Top 3 Best Property Maintenance Providers London 2026

Choosing a property maintenance company in London? Compare leading providers on services, response times, accreditations and pricing, and see which questions to ask before you sign.

London Side Return Extension Costs 2026: £2,500-£4,000/m² and Real Budgets

London side return extensions cost £2,500-£4,000 per m² to build in 2026. See a line-by-line cost breakdown, professional and party wall fees, three worked budgets from £33,000 to £95,000, timelines and where you can safely save.