Permit Record

Alteration Residential

20 PROSPECT HILL AVE, SOMERVILLE MASSACHUSETTS 02143

ClassificationAlteration
Reliable value$1,213
ContractorGreen Energy Gains
Permit record
Parties
Contractor
Green Energy Gains
Applicant
Green Energy Gains
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
Floor area
Not in source
Parcel & enrichment
Parcel APN
080-C-00012-000000
Climate zone (IECC)
5A
Roof area (est.)
Not in source
HVAC tonnage (est.)
Not in source
Building type
Not in source
Geocode & dates
Coordinates
42.3813, -71.0920
Geocode confidence
100%
Geocode source
Not in source
Issued
2026-06-17
Applied
2026-05-12
Work class
Residential
Description
Source description

air sealing and insulation through the Mass Save program

Status
Current status
issued
Source status
Issued
Expired
2026-12-17
Provenance
First seen (no changes since)
Jun 24, 2026 · 19:12 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

3 permits at this parcel (parcel 080-C-00012-000000) · 2024-02-27 – 2026-06-17

  1. 2026-06-17This permitAlteration Residential · Issued$1,213Green Energy Gains
  2. 2026-06-0253271608Alteration Residential · Issued$27,632Forge Team
  3. 2024-02-2714193164Alteration Residential · Issued$33,499FRS Company

Full permit history at this parcel · as of 2026-06-28.

Other permits by Green Energy Gains

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Developer details
display_permit_id
53302006
canonical_uid
310:53302006
source_permit_id
53302006
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