Permit Record

Alteration Commercial

300 Third St, Cambridge, MA 02142

ClassificationBuilding: Alteration and AdditionCommercial Alteration
Reliable value$107,029,614
ContractorConsigli Construction →
Permit record
Parties
Contractor
Consigli Construction
Applicant
Erick Lacy
Owner
Not in source
Architect
Christopher M Ladd
Engineer
Not in source
Contractor license
Not in source
Building & lot · PLUTO
Building class
Not in source
Zoning district
Not in source
Lot area
Not in source
Year built
Not in source
Units (total)
Not in source
Units (residential)
Not in source
Units (commercial)
Not in source
Floor area
182,834 sq ft
Parcel & enrichment
Parcel APN
15-29
Climate zone (IECC)
5A
Roof area (est.)
Not derivable — no building-size signal for this permit
HVAC tonnage (est.)
Not derivable — no building-size signal for this permit
Building type
B
Building subtype
Commercial / Mixed Use
Geocode & dates
Coordinates
42.3655, -71.0823
Geocode confidence
100%
Geocode source
Not in source
Issued
Jul 23, 2026
Applied
Mar 18, 2026
Work class
Commercial
Description
Source description

PHASE 1: Multi-level renovation of existing offices/lab/process support spaces, and associated rooftop mechanical equipment. Referencing the included "300 Third St Phased Occupancy Plan", section "Phase 1 Renovaton", scope of work will include:-Level P1: Demo of existing process support spaces to rebuild new process support spaces-Level P2: Demo of existing pH room to rebuild new pH room & installation of new mechanical unit on low roof-Level 1: Rebuild/renovate partial floor plate for new lab space-Level 2: Demo of existing mechanical rooms to rebuild new mechanical rooms-Level 3: Mechanical riser work & fire alarm upgrades only-Level 4: Mechanical riser work, fire alarm upgrades, & roof structural steel upgradess only-Roof/Penthouse: Demo, replacement, & install of new mechanical rooftop units. This work will require the modification of existing exterior screenwall to accommodate new mechanical unit layout

Status
Current status
issued
Source status
Active
Provenance
First seen by PermitCore
Jul 24, 2026 · 09:54 UTC
Last seen
Aug 6, 2026 · 11:31 UTC
Last changed
Jul 24, 2026 · 09:54 UTC
Data-quality checks0 of 12 flagged

0 of 12 data-quality rules flagged anything on this permit.

Checks not flagged

  • Geocode out of bounds
  • Geocode is sentinel
  • Issued date in the future
  • Issued date parse bug
  • Issued date is placeholder
  • Commercial units is placeholder
  • Residential units out of bounds
  • Residential units is placeholder
  • Total units out of bounds
  • Total units is placeholder
  • Valuation out of bounds
  • Valuation is placeholder
Project timeline at this parcel

7 permits at this parcel (parcel 15-29) · Jan 17, 2019 – Jul 23, 2026

  1. Jul 23, 2026This permitAlteration Commercial · Issued$107,029,614Consigli Construction
  2. Jan 22, 2026cambridge_aa_1190805Alteration Commercial · Issued$557,603Consigli Construction
  3. Sep 22, 2025cambridge_aa_1179211Alteration Commercial · Issued$4,060,687Consigli Construction
  4. May 7, 2025cambridge_aa_1157479Alteration Commercial · Issued$856,158Commodore Builders
  5. Aug 8, 2023cambridge_aa_232374Alteration Commercial · Issued$366,174A-Z
  6. Jan 23, 2020cambridge_aa_62778Alteration Commercial · Finaled$6,399,592Columbia Construction Company
  7. Jan 17, 2019cambridge_aa_29608Demolition · Issued$597,000James Baldasaro

Full permit history at this parcel · as of Jul 25, 2026.

Other permits by Consigli Construction

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Developer details
Permit #
cambridge_aa_1202732
Canonical ID
309:cambridge_aa_1202732
Source permit ID
cambridge_aa_1202732
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