About

Over 20 Years of Building Services Expertise

Sigma BS is a multi-disciplinary building services provider delivering Mechanical, Electrical, Fabric, Refurbishment and Design & Build solutions across London, Kent and the South East. Established in 2000, we’ve built a solid reputation for delivering projects and maintenance services safely, reliably and with a focus on long-term value.

Our strength comes from our in-house, directly employed workforce. This ensures quality, consistency and accountability at every stage — whether we’re upgrading heating systems, modernising lighting, refurbishing workspaces or maintaining building fabric.

We understand that most of the environments we work in are live, occupied and operational. That means planning carefully, communicating clearly and delivering work with minimal disruption.