Founded in 1960, Armstrong Burton Group employs 33 people and offers services including masterplanning, technical design, and structural and civil engineering. The firm works primarily in the residential and care sectors.
Pegasus Group said that Armstrong Burton Group will continue operating under its existing name and owner Derek Burton will stay on for a transition period before retiring.
According to the 2019 Planning Consultancy Survey, Pegasus is the joint-seventh largest employer of chartered planners in the UK.
The firm reported 80 chartered planners on staff, 254 planning fee-earners and annual fee income of £28.2 million.
According to Pegasus Group, Armstrong Burton Group currently employs no chartered town planners.
Tony Bateman, managing director of Pegasus Group, said: “This is an exciting acquisition for us because it complements the growth we want to achieve in our architectural work into the future.
“Armstrong Burton will continue to operate as they do now from their existing premises, but as part of the Pegasus Group. All 33 ABG employees will be retained in the deal.”