Gem Environmental Building Services

GEM Environmental Building Services is a building maintenance contractor offering electrical, mechanical, gas and renewable installations, heat metering, water hygiene monitoring, maintenance and remedial works, and energy efficiency and regulatory consultancy. It also develops GEM Agility, software for district and communal heat networks, and GEM Smart, a cloud-based product for landlords and property managers covering indoor air quality and property management.

Customers include London local authorities, social housing providers, more than 15 London schools and commercial clients. Services are delivered reactively and on planned maintenance, large projects and M&E management, including contracts covering over 200 communal boiler houses on a 24/7/365 basis.

The company was founded in December 1999 and has its head office in Central London, with additional offices in Islington, Westminster and Kentish Town. Its Technology team was formed in 2021, and its GEM Consultancy Services subsidiary was established the same year. GEM Agility was highly commended at the Energy Awards in 2023, and GEM Smart was highly commended at the CIBSE awards in 2024.

Product: Building maintenance, M&E installation, heat metering, water hygiene and compliance services, plus GEM Agility heat network software and GEM Smart landlord monitoring product.