Permit Record

Alteration Residential

20 Palermo St, Boston, MA 02128

ClassificationLong Form/Alteration Permit - NROCCResidential Alteration
Reliable valueNot in source
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
Thomas McCarthy
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
101558000
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
Not in source
Building subtype
1-2FAM
Geocode & dates
Coordinates
42.3885, -70.9969
Geocode confidence
100%
Geocode source
Not in source
Issued
Apr 22, 2026
Applied
Not in source
Work class
Residential
Description
Source description

Occupancy has been confirmed as a one family per LF #3899 issued 5/20/2003.; The applicant needs to change the occupancy from a 1 family to a 2 family.

Status
Current status
finaled
Source status
Closed
Expired
Oct 22, 2026
Provenance
First seen by PermitCore
May 4, 2026 · 20:05 UTC
Last seen
Jun 24, 2026 · 23:03 UTC
Last changed
Jun 24, 2026 · 23:03 UTC
Data-quality checks1 of 12 flagged

1 of 12 data-quality checks flagged on this permit. Detail below.

Valuation is placeholder
valuation_usd_is_placeholder

valuation_usd matched a known placeholder (often 0 or 1) used by the source when the real valuation wasn't reported.

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
Project timeline at this parcel

3 permits at this parcel (parcel 101558000) · Jun 19, 2014 – Apr 22, 2026

  1. Apr 22, 2026This permitAlteration Residential · Finaled
  2. Jan 5, 2021SF1143552Alteration Residential · Issued$2,295
  3. Jun 19, 2014E367684MEP Electrical · Finaled$1,000

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

Developer details
Permit #
ALT1760345
Canonical ID
69:ALT1760345
Source permit ID
ALT1760345
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