An historic mill originally constructed from bed rock quarried from a canal abutting the property, the recent rehabilitation of 585 Middlesex Street called for major structural repairs, an addition, and complete fit-up for use as the new headquarters for a leading civil and geotechnical engineering firm.  A LEED Gold Star recipient, the project incorporated sustainable and “green” building elements including solar panels, high-efficiency heating, plumbing, and electrical systems, pervious pavement, and the use of non-VOC emissions construction materials.