Permit Record

Alteration Residential

21 Leyland St, Boston, MA 02125

ClassificationLong Form/Alteration Permit - SDResidential Alteration
Reliable valueNot in source
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
Douglas Barnum
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
800147000
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
Multi
Geocode & dates
Coordinates
42.3204, -71.0707
Geocode confidence
100%
Geocode source
Not in source
Issued
Nov 25, 2015
Applied
Not in source
Work class
Residential
Description
Source description

Cottage Brooks Apartments (19-37 Leyland Street): Combine 19, 21, 23, 25,27, 29, 31, 33, 35, 37 Leyland Street into one 31 unit buiilding to be known as 19-37 Leyland Street. Plan shown on ALT493568.

Status
Current status
finaled
Source status
Closed
Expired
May 25, 2016
Provenance
First seen by PermitCore
May 4, 2026 · 20:05 UTC
Last seen
Jun 24, 2026 · 23:03 UTC
Last changed
May 15, 2026 · 09:22 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

2 permits at this parcel (parcel 800147000) · Oct 18, 2010 – Nov 25, 2015

  1. Nov 25, 2015This permitAlteration Residential · Finaled
  2. Oct 18, 2010SF46017Alteration Residential · Issued$4,212

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

Developer details
Permit #
ALT493570
Canonical ID
69:ALT493570
Source permit ID
ALT493570
Browse Boston permits in the Market Explorer →Pull this permit via /v1/permits →