Compiled by AECOM, the 2026 edition has been updated with the latest pricing information to help you manage your projects over the next 12 months through this challenging period of inflationary pressure, global uncertainty and skills shortages.

It covers the full range of mechanical and electrical services, together with higher-level costs for a diverse range of systems and different building applications. All prices have been updated via comprehensive supplier engagement combined with AECOM’s market intelligence and a short-term inflationary forecast to ensure you have the most accurate cost data available. The approximate estimating section has been revised to provide up to date key data in terms of square metre rates, all-in-rates for key elements and selected specialist activities and elemental analyses on a comprehensive range of building types.

All the standard features you have come to expect from SPON'S are also included, considered essential for today’s services cost professional:

• detailed materials prices, labour constants, labour costs and measured work prices for mechanical and electrical works, from above ground drainage to automatic transfer switches, and circuit breakers to sprinkler systems
• an extensive Approximate Estimating section for quick, rule-of-thumb pricing of mechanical or electrical installations, together with elemental services costs for different types and standard of buildings
• full details of wage rates, daywork and cost indices on a national and Central London basis
• an updated index and guidance notes

Included within the inside front cover of every book is a VitalSource® eBook redemption code giving one user access to the content digitally until the end of December 2026.