Permit Record

Alteration Residential

12 Union Pk, Boston, MA 02118

ClassificationLong Form/Alteration Permit - EXTRENResidential Alteration
Reliable valueNot in source
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
Sea-Dar Construction
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
306945000
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
42.3423, -71.0712
Geocode confidence
100%
Geocode source
Not in source
Issued
Apr 19, 2023
Applied
Not in source
Work class
Residential
Description
Source description

Remove fire balconies at the rear of building on 3rd, 4th, and 5th floors. All costs and work associated with amendment A1391234 and long form ALT1223041 for 10 Union Park.eplan

Status
Current status
finaled
Source status
Closed
Expired
Oct 19, 2023
Provenance
First seen by PermitCore
May 4, 2026 · 20:05 UTC
Last seen
Jun 24, 2026 · 23:02 UTC
Last changed
May 15, 2026 · 09:21 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 306945000) · Dec 10, 2010 – Apr 19, 2023

  1. Apr 19, 2023This permitAlteration Residential · Finaled
  2. May 17, 2017ELV709904MEP Electrical · Issued$389
  3. Dec 10, 2010COO54719Other · Finaled

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

Developer details
Permit #
ALT1411706
Canonical ID
69:ALT1411706
Source permit ID
ALT1411706
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