Permit Record

Alteration Residential

15 Follen St, Cambridge, MA 02138

ClassificationBuilding: Alteration and AdditionResidential Alteration
Reliable value$172,290
ContractorThoughtforms
Permit record
Parties
Contractor
Thoughtforms
Applicant
Taylor Holt
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
Units (residential)
Not in source
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
172-37
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
One or Two Family Dwelling
Geocode & dates
Coordinates
42.3787, -71.1221
Geocode confidence
100%
Geocode source
Not in source
Issued
Apr 29, 2026
Applied
Mar 11, 2026
Work class
Residential
Description
Source description

(20) replacement windows and (1) new construction window. Restore (6) window sashes.

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

5 permits at this parcel (parcel 172-37) · Jul 12, 2022 – Apr 29, 2026

  1. Apr 29, 2026This permitAlteration Residential · Issued$172,290Thoughtforms
  2. Dec 29, 2025cambridge_aa_1191329Alteration Residential · Finaled$130,548Thoughtforms
  3. Nov 5, 2025cambridge_aa_1187321Demolition · Issued$117,000Thoughtforms
  4. Sep 19, 2022cambridge_aa_187404Demolition · Issued$3,045,307.32Don Foote Contracting
  5. Jul 12, 2022cambridge_aa_182695Alteration Residential · Finaled$83,544Don Foote Contracting

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

Other permits by Thoughtforms

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Developer details
Permit #
cambridge_aa_1201939
Canonical ID
309:cambridge_aa_1201939
Source permit ID
cambridge_aa_1201939
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