Permit Record

Alteration Residential

45 Dana St, Cambridge, MA 02138

ClassificationBuilding: Alteration and AdditionMultifamily Alteration
Reliable value$1,925,000
ContractorThe Harder Group Limited Company →
Permit record
Parties
Contractor
The Harder Group Limited Company
Applicant
Lauren Harder
Owner
Not in source
Architect
Evergreen Architecture
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
9,649 sq ft
Parcel & enrichment
Parcel APN
135-50
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
R
Building subtype
Multi Family (3 or more dwelling units)
Geocode & dates
Coordinates
42.3720, -71.1090
Geocode confidence
100%
Geocode source
Not in source
Issued
Sep 26, 2025
Applied
Aug 11, 2025
Work class
Residential
Description
Source description

An existing three story wood-frame building will be substantially renovated and the rear roofline rebuilt. An approved automatic sprinkler system will be provided and egresses modified accordingly. New electro-mechanical systems will be provided throughout; new kitchens and bathrooms, new finishes. Living space will expand into the basement.  Mid Cambridge Conservation Commission reviewed and approved this project on June 9, 2025.

Status
Current status
issued
Source status
Active
Provenance
First seen by PermitCore
May 18, 2026 · 16:17 UTC
Last seen
Aug 6, 2026 · 11:31 UTC
Last changed
May 18, 2026 · 16:17 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

3 permits at this parcel (parcel 135-50) · Oct 23, 2023 – Sep 26, 2025

  1. Sep 26, 2025This permitAlteration Residential · Issued$1,925,000The Harder Group Limited Company
  2. Aug 11, 2025cambridge_aa_1169564Alteration Residential · Issued$42,000The Harder Group
  3. Oct 23, 2023cambridge_aa_244921Alteration Residential · Finaled$10,000Jarrod Deibel Dba After Hours Systems

Full permit history at this parcel · as of Jul 8, 2026.

Other permits by The Harder Group Limited Company

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Developer details
Permit #
cambridge_aa_1178392
Canonical ID
309:cambridge_aa_1178392
Source permit ID
cambridge_aa_1178392
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