Detail Design Engineering was formed in Manchester in 1991 by three building energy management systems (BEMS) engineers. DDE are leaders in BEMS installations and maintenance, from legacy systems to the latest MSI integration with IoT devices.   Over the past thirty years the company has grown organically from a team of five to a team of fifty.

In August 2021, Frazer Hall acted as lead advisers in the partial sale of equity to the management team of Detail Design Engineering Limited.  The Company (see was founded by three of the remaining shareholders, employs around fifty people and is a leading building controls specialist.