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About Xmbly

The Office and Research Center + The Residences at Assembly
Assembly Row, Somerville, MA

Four-phase, 1.9 million square foot development of a 9.4-acre Assembly Row parcel largely comprised of surface parking into a mixed-use complex with a hotel, lab, office, residential and retail uses. An existing 195,000 square foot office building (Block 24) would be retained. The four phases would be constructed as follows:

  • Phase 1 (Block 21): Five-story mixed-use building containing a 188-room hotel, 147 residential units and ground-floor retail facing public open space at the center of the site. Phase 1 would also construct 233 surface and subsurface parking spaces.
  • Phase 2 (Block 22): 20-story tower containing 14 stories and 480,000 square feet of Class A office/lab space above a six-story podium. The podium would contain two levels and 31,000 square feet of retail underneath four parking levels with 541 spaces.
  • Phase 3 (Block 23): Two 19-story, 1 million square foot office towers connected by a link. These towers would also sit above a retail and parking podium.
  • Phase 4 (Block 25): Five-story mixed-use building containing 72 residential units, 16,000 square feet of retail and a 100-car parking garage

In March 2020, the applicant has proposed to amend the project with the following changes

- Removal of Block 25 (190,000 SF residential tower) from the previously approved PUD-PMP (PB2018-7) to enable an increase of the central publicly accessible civic open space to approximately 58,000 SF

-  A total of approximately 1,220,000 SF of office/lab/R+D within three distinct buildings, inclusive of approximately 80,000 SF of innovation space

- A total of approximately 329 residential units located in one distinctive building (PB2018-12) at Alta XMBLY

- A total of approximately 24,500 SF of ground-floor retail and/or Active Use spaces including restaurants,

- A 15,000 SF potential fire station,

- 1,899 on-site below-and above-grade structured parking spaces. The previously approved PUD-PMP’s (PB 2018-7) parking ratios were applied to the proposed development program to adjust the number of provided parking to the Amended PUD-PMP program. Additionally, 38 on-street City-metered parking spaces are proposed to be provided on Road K designated for the fire station, retail/restaurant and active uses.

An updated site plan is below:

updated site plan xmbly


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Latest Updates

Mar 27, 2020

Amended Plans Filed for Xmbly in Somerville


Jun 14, 2018

SGA envisions Xmbly as an opportunity to fully connect Somerville as a city and to...


May 22, 2018

A look at Xmbly: Somerville's Next Big Project


Jan 15, 2018

Cresset acquires Assembly Row development site for $35 million


Oct 16, 2016

1.9 million square foot development coming to Assembly Row


Latest Press Releases

Related Documents

Issue Date Doc Type Docnumber Description Consideration Grantor Grantee Follow
04/02/19 Permit ED19000007 Search $100.00 ITK ITK
10/02/18 Permit P18000884 Search $60.00 ITK ITK
08/21/14 Permit E14000781 Search $105.00 ITK ITK
12/09/14 Permit P14000617 Search $60.00 ITK ITK
02/24/15 Permit CI15000074 Search $350.00 ITK ITK
08/07/14 Permit E14000701 Search $60.00 ITK ITK
12/19/16 Permit CI16000001 Search $100.00 ITK ITK
12/05/17 Permit E17002332 Search $202.00 ITK ITK
07/17/14 Permit E14000566 Search $125.00 ITK ITK
05/18/15 Permit E15000501 Search $360.00 ITK ITK
06/11/18 Permit CO18000121 Search $403.00 ITK ITK
12/20/17 Permit SM17000267 Search $950.00 ITK ITK
07/13/16 Permit P16000562 Search $80.00 ITK ITK
03/22/19 Permit E19000493 Search $75.00 ITK ITK
09/28/18 Permit B18001781 Search $7,271.00 ITK ITK
06/19/14 Permit E14000302 Search $155.00 ITK ITK
03/16/15 Permit E15000225 Search $100.00 ITK ITK
07/11/16 Permit E16001118 Search $78.00 ITK ITK
09/26/17 Permit E17001857 Search $90.00 ITK ITK
07/24/18 Permit E18001192 Search $102.00 ITK ITK
03/07/19 Permit CI19000008 Search $350.00 ITK ITK
06/09/14 Permit B14000138 Search $240.00 ITK ITK
12/29/14 Permit E14001421 Search $265.00 ITK ITK
08/09/18 Permit E18001351 Search $390.00 ITK ITK
07/19/16 Permit B16001058 Search $2,525.00 ITK ITK
11/12/14 Permit B14001038 Search $77,424.00 ITK ITK
06/03/19 Permit ED19000008 Search $100.00 ITK ITK
01/05/17 Permit P17000004 Search $80.00 ITK ITK
02/05/18 Permit E18000147 Search $92.00 ITK ITK
06/10/15 Permit E15000702 Search $440.00 ITK ITK
02/15/17 Permit E17000193 Search $85.00 ITK ITK
10/02/19 Permit E19001562 Search $0.00 ITK
08/01/19 Permit ES19000372 Search $0.00 ITK

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