Alteration Residential
20 W Cottage St, Boston, MA 02125
ClassificationShort Form Bldg Permit - INTEXTResidential Alteration
Reliable value$400
ContractorNot in source
Permit record
Parties
- Contractor
- Not in source
- Applicant
- James Flaherty
- 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
- 1300006000
- 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
- 42.3209, -71.0733
- Geocode confidence
- 100%
- Geocode source
- Not in source
- Issued
- Dec 30, 2025
- Applied
- Not in source
- Work class
- Residential
Description
Source description
Addition of concrete slab at top of egress stairs towards rear of basement
Status
- Current status
- finaled
- Source status
- Closed
- Expired
- Jun 30, 2026
Provenance
- First seen by PermitCore
- May 4, 2026 · 20:09 UTC
- Last seen
- Jun 25, 2026 · 00:03 UTC
- Last changed
- May 15, 2026 · 09:35 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
- Dec 30, 2025This permitAlteration Residential · Finaled$400
- Apr 22, 2025PL1709662MEP Plumbing · Issued$2,000
- Apr 22, 2025PL1707490MEP Plumbing · Finaled$2,000
- Apr 15, 2025E1705378MEP Electrical · Issued$1,650
- Apr 14, 2025SF1704570Alteration Residential · Finaled$3,500
- Feb 14, 2022E1296753MEP Electrical · Finaled$200
- Dec 14, 2010SF54927Alteration Residential · Finaled$2,222.79
- Jan 22, 2010PL11995MEP Plumbing · Finaled$4,200
- Jan 21, 2010E11820MEP Electrical · Finaled$2,200
- Jan 11, 2010SF10623Alteration Residential · Finaled$53,187
Full permit history at this parcel · as of Jul 8, 2026.
Developer details
- Permit #
- SF1803227
- Canonical ID
- 69:SF1803227
- Source permit ID
- SF1803227