Lerch Bates is an international consulting services company [1] specializing in the design and management of building systems with 36 offices in North America, Europe, the Middle East and India.

Founded in 1947, focused on elevator consulting, they work with architects, developers, building investors, owners and managers on the design, sustainability and continuous use of building systems Specific services offered include: planning and design (including CAD), survey and evaluation of existing systems and equipment, contracting management, development of specifications, bidding assistance and negotiation, project management and administration, testing, and training.

In 1964 Charles W. Lerch was joined by Vane Q. Bates and both men working full-time on elevator consulting.

The Company moved a number of times but has maintained its HQ in and around Denver.

In 1985 Lerch Bates Limited in London was formed and in 1990 it created the first "Performance Related" maintenance contact, which related equipment downtime and traffic performance to maintenance premiums.