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Total Square Footage 71,897


Established 2013
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JML Engineering is a full service structural engineering firm whose business philosophy is to provide a high quality product that is economical to construct. This is achieved by producing high quality contract documents which clearly indicate the most appropriate structure for the clients proposed use. Many of our clients are contractors and material suppliers who use us to optimize their structure.


249 Third Street
- Jun 10, 2019

Facade Install Nearly Complete for 249 Third St. in Kendall Square Facade install is nearly complete for the new 5-story apartment building at 249 Third Street in Kendall Square. The project will include 84 apartments and 1,540 square feet of ground-floor retail. Apartments will range from studios to three-bedrooms including 28 studios, 46 one bedrooms, 8 two-bedrooms, and 2 three-bedrooms. Resident amenities will include a private roof deck and landscaped courtyard. Construction is expected to be complete later this summer.

249 Third Street
- Feb 26, 2019

Facade Work Begins for 249 Third Street in Kendall Square With structural framing complete, brick facade install is starting at 249 Third Street just outside Kendall Square. This new building is set to include 84 apartments, a mix of studios through three bedrooms. Resident amenities will include a private roof deck along with a fitness center and yoga room.Construction is set to be complete in late summer.  

249 Third Street
- Nov 30, 2018

Framing Reaches Full Height at 249 Third Street Framing has reached full height for this new five-story mixed-use project Callahan Construction Managers is building in Kendall Square. 249 Third Street will feature 84 residential units along with just over 1,500 square feet of ground-floor retail. Residents will have access to a fitness center, clubroom, private roof deck, and a landscaped courtyard.  Callahan is on track to complete the 91,682 square foot project in late August 2019.

249 Third Street
- Jul 26, 2018

Callahan Continues Foundation Work at 249 Third StreetCallahan Construction Managers continues foundation and site work at 249 Third Street in Cambridge. Block 1 and Block 2 foundation walls are now complete and 50 % of the Level 1 concrete slab is complete. The upcoming mixed-use building, located in Kendall Square, is being developed by Equity Residential and designed by ICON Architecture. When complete the building will feature 84 apartments and a ground floor retail space. Residents will have access to a private roof deck, landscaped courtyard, and ample on-site bicycle parking.

249 Third Street
- Dec 01, 2017

W. L. French begins site work at 249 Third Street, upcoming 84-unit apartment building in Kendall Square W. L. French Excavating Corporation has begun soil remediation at 249 Third Street in Cambridge’s Kendall Square, the future site of an 84-unit apartment building. W. L. French’s scope of work at 249 Third Street includes an extensive health and safety plan that requires workers to wear Level C personal protective equipment (PPE), installation of steel sheet piles for support of excavation (SOE), drilled deep wells for construction dewatering, extensive groundwater treatment and, ultimately, excavation and disposal of 6,000 tons of Toxic Substances Control Act (TSCA) waste and 15,000 tons of Non-TSCA waste. W. L. French will continue work at 249 Third Street into the 1st quarter of 2018. Upon completion, 249 Third Street will feature 84 apartment residences ranging from studios to three-bedrooms and 1,540 square feet of ground-floor retail located in the heart of Kendall Square, the United States’ hottest life sciences market, steps from the Massachusetts Institute of Technology (MIT). The following are photographs of 249 Third Street:

249 Third Street
- Sep 02, 2016

Approved Kendall Square apartment plan revised to include additional amenitiesThe City of Cambridge's Planning Board will hold a hearing this Tuesday (September 6th, 2016) to review Equity Residential's proposal to add 14,484 additional square feet of basement level amenities and utilities to the approved 249 Third Street apartment project in Kendall Square. The basement level would contain a gym and bike parking in addition to utility spaces and storage. Under the revised proposal, the height, building footprint and number of dwelling units at 249 Third Street would remain unchanged. 249 Third Street will feature 84 residential apartments ranging from studios to three-bedrooms and 1,540 square feet of ground-floor retail. 249 Third Street was approved for construction by the Planning Board in October 2015; construction has not yet commenced. 

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249 Third Street