From the industrial revolution

to sustainable affordable housing

How will we know

it's us-

without the past...?

What a community chooses to save

is what a community chooses to say about itself

"Quality affordable housing is a key element

for a strong and secure Maine”

- Angus King

We shape our buildings

thereafter they shape us

Commercial buildings should bring you inside

the vision of the business owner

Commitment is what transforms a promise into reality

-Abraham Lincoln.



The adaptive reuse of the former Saint Joseph’s Convent in Portland, Maine will turn 101,000 square feet of the of the Sisters of Mercy’s main residence into eighty-eight (88) units of energy efficient, sustainable senior housing made possible by a collaboration of federal, state, local and private sources.

The Motherhouse is a model for the reinstatement of historic resources back into the community.


  • Portland Builders has been selected to construct a new warehouse and distribution center for Nestle Waters....

  • Portland Builders was selected to construct Fresenius Kidney Care Center’s 8,000 square foot state-of-the-art treatment center in Gardner, Maine. With over 2,200 clinic’s in North America, their standard for quality and adherence to schedule were met by our construction team....

  • In just sixteen short months, Portland Builders transformed 101,205 sq. ft. of the former Sisters of Mercy Convent into 88 units of senior and market value senior housing apartments....