A practical comparison of mini piling and CFA piling for London projects: pile sizes, loads, site access, noise, spoil, working platforms and cost drivers.

BS 8102:2022 basement waterproofing explained for London projects: Grades 1–3, Type A, B and C protection, combined systems and common mistakes.

Do you need a party wall agreement for your London basement, extension or RC frame project? Here is the process, timeline and real cost for 2026.

In short: Underpinning costs in London in 2026 typically range from £2,000 to £6,000 per linear metre of wall treated, depending on the method used and ground conditions. A standard terraced or semi-detached house needing 10–15 metres of underpinning costs £20,000 to £60,000 in total. Mass concrete underpinning is the most cost-effective method on stable

Published: July 2026 · By G8 Builds In short: Piling costs in London in 2026 range from £75 to £200 per linear metre for residential projects and £100 to £250+ per linear metre for commercial works. A typical residential project with 10–15 mini piles costs £15,000 to £40,000. The main cost drivers are pile type,