Alteration Residential
421 Huron Ave, Cambridge, MA 02138
ClassificationBuilding: Alteration and AdditionResidential Alteration
Reliable value$8,973
ContractorGreenmen Builders →
Permit record
Parties
- Contractor
- Greenmen Builders
- Applicant
- Eric Byrne
- 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
- 234-52
- 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
- R
- Building subtype
- One or Two Family Dwelling
Geocode & dates
- Coordinates
- 42.3810, -71.1406
- Geocode confidence
- 100%
- Geocode source
- Not in source
- Issued
- Mar 10, 2025
- Applied
- Mar 5, 2025
- Work class
- Residential
Description
Source description
Replace basement window at front of house with new egress window
Status
- Current status
- issued
- Source status
- Active
Provenance
- First seen by PermitCore
- May 18, 2026 · 16:17 UTC
- Last seen
- Jul 2, 2026 · 11:40 UTC
- Last changed
- May 18, 2026 · 16:17 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
- Mar 10, 2025This permitAlteration Residential · Issued$8,973Greenmen Builders
- Jan 13, 2025cambridge_aa_1144221Alteration Residential · Finaled$16,062Greenmen Builders
- Aug 24, 2022cambridge_aa_191178Alteration Residential · Issued$101,036Pro Touch Home Improvement
Full permit history at this parcel · as of Jul 8, 2026.
Other permits by Greenmen Builders
Developer details
- Permit #
- cambridge_aa_1154590
- Canonical ID
- 309:cambridge_aa_1154590
- Source permit ID
- cambridge_aa_1154590