The Royal Institution of Chartered Surveyors is relocating its West Midlands team to Colmore Row in Birmingham city centre.
The professional trade body announced in April that it was planning to leave its home in Coventry after sluggish progress on the city's Friargate development.
It has announced it will be taking up residence in the newly refurbished 55 Colmore Row building early next year after agreeing a deal for the whole of the fifth floor and half of the ground floor.
Chief executive Sean Tompkins said: "We have for a long time looked to move our operational headquarters from Coventry and we are pleased to announce that we will be moving into central Birmingham come 2018.
"55 Colmore Row not only gives us a more flexible space, it brings us into the centre of a significant city allowing us the opportunity to better engage the profession, employers of the profession and raise awareness and inspire the next generation."
The move will coincide with the RICS' 150th anniversary.
A spokesman for RICS added: "We are happy that the majority of our employees are committed to moving with us to Birmingham and have been working with the team in Coventry throughout this process to make this as easy as possible for all concerned.
"Understandably with business moves, there will be cases where staff simply do not wish to relocate and we will recruit resultant vacancies in Birmingham."
John Hammond, investment director with IM Properties which owns 55 Colmore Row, added: "We were delighted Pinsent Masons and Savills decided to come here but it is especially satisfying when the association which drives best practice and the highest quality of professional standards into our industry also chooses us and from a very competitive market place."