Permit Record

Alteration Residential

31 Concord Ave, Cambridge, MA 02138

ClassificationBuilding: Alteration and AdditionMultifamily Alteration
Reliable value$121,620
ContractorMaintenance Resource Co
Permit record
Parties
Contractor
Maintenance Resource Co
Applicant
David Barrett
Owner
Not in source
Architect
Not in source
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
Floor area
22,768
Parcel & enrichment
Parcel APN
215-12
Climate zone (IECC)
5A
Roof area (est.)
Not in source
HVAC tonnage (est.)
Not in source
Building type
R
Geocode & dates
Coordinates
42.3797, -71.1260
Geocode confidence
100%
Geocode source
Not in source
Issued
2026-06-23
Applied
2026-05-19
Work class
Residential
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

Permits grouped by tax lot (parcel 215-12) — same parcel, same project.

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Other permits by Maintenance Resource Co

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Developer details
display_permit_id
cambridge_aa_1212180
canonical_uid
309:cambridge_aa_1212180
source_permit_id
cambridge_aa_1212180
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