Machado and Silvetti Assoc. has retained Acella Construction Corp. of Norwell for the 6,000-square-foot build-out of its Boston headquarters.

Machado and Silvetti Assoc. is a Boston-based architecture and urban design firm.

The project will take place at Machado and Silvetti's headquarters located at 560 Harrison Ave. in Boston. Acella Construction will be responsible for the 6,000-square-foot office build-out, which will include extensive interior renovations and remodeling. 

Acella Construction will work in conjunction with Machado and Silvetti, who will act as the project's architectural design team.