Sebastian Mulsow

Siena Construction

Siena Construction is a Cambridge-based construction management firm specializing in the life-sciences, educational, commercial, and retail sectors. Since our inception in 1991, Siena has been dedicated to providing exemplary service to our clients from early development stages through successful project completion. Siena has steadily grown into one of New England's most respected construction management firms. This growth has been directly attributed to consistent and reliable performance, which has resulted in an extensive number of clients who return to us for repeat work. We're proud of our ongoing partnerships, and the work we've done throughout New England. Siena is honored to be part of an exciting, collaborative process that creates places for people to live, play, heal, work, and celebrate.