Permit Record

Alteration Residential

143 W Canton St, Boston, MA 02116

ClassificationAmendment to a Long Form - INTEXTResidential Alteration
Reliable valueNot in source
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
Robert Walker
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
400263000
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
42.3429, -71.0749
Geocode confidence
100%
Geocode source
Not in source
Issued
Jul 1, 2024
Applied
Not in source
Work class
Residential
Description
Source description

Amendments to ALT1552126 -Install structural steel and framing per Siegel dwgs. dated 3/15/24 -Remove existing garden level floor sleepers, subfloor, sole plates, and lower 3' of finishes due to mold. Replace in kind w/ additional trowel applied Xypex vapor barrier

Status
Current status
issued
Source status
Open
Expired
Jan 1, 2025
Provenance
First seen by PermitCore
May 4, 2026 · 20:05 UTC
Last seen
Jun 24, 2026 · 23:01 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

14 permits at this parcel (parcel 400263000) · Aug 14, 2013 – Feb 17, 2026

  1. Feb 17, 2026SF1819608Alteration Residential · Issued$46,007.87
  2. Feb 13, 2026E1820506MEP Electrical · Finaled$2,000
  3. Jul 1, 2024This permitAlteration Residential · Issued
  4. Jun 7, 2024ELV1612686MEP Electrical · Issued$2,500
  5. Jun 7, 2024EFA1612682MEP Electrical · Issued$2,000
  6. May 14, 2024G1599612MEP Plumbing · Finaled$1,000
  7. Apr 26, 2024PL1595894MEP Plumbing · Finaled$5,000
  8. Feb 17, 2024E1572420MEP Electrical · Finaled$35,000
  9. Jan 8, 2024ALT1552126Alteration Residential · Finaled$1,079,424.94
  10. Feb 4, 2015COO438744Other · Finaled$106,108
  11. Oct 24, 2014A361216Alteration Residential · Issued$18,064
  12. May 23, 2014SF365796Alteration Residential · Issued$12,605
  13. Oct 30, 2013E297544MEP Electrical · Issued$2,200
  14. Aug 14, 2013ALT258829Alteration Residential · Issued$75,439

Full permit history at this parcel · as of Jul 12, 2026.

Developer details
Permit #
A1589659
Canonical ID
69:A1589659
Source permit ID
A1589659
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