Contractor Profile
Critical Mass Solar
Critical Mass Solar is a specialist residential alteration contractor in Boston — all 11 of its segment-eligible permits fall in residential alteration. Its permit record in Boston spans 2024–2025. Reliable permit valuations total ≈$447K (across the 100% of filings with a valuation we can stand behind).
First permit: Mar 28, 2024 (911d ago)Latest permit: Nov 24, 2025 (305d ago)
The sales record
- Market
- Boston
- Active
- 2024–2025 · 1 yr
- Licence IDs on their permits
- —
- Reliable value
- $447K
- Coverage
- 100%
- Reliable filings
- 11
- Rank in Boston
- #601
- Permits (all-time, all segments)
- 11
- Filings 90d
- 0
- Filings 30d
- 0
- Latest permit
- Nov 24, 2025
Typical project size$37Ktypically $29K–$53K across 11 valued permits
Where they work
Primarily Residential Alteration — 100% of 11 segment-classified permits
Firmographics
License & registration IDs on fileNot in our data — we don’t hold licensing-board registries, and this city’s permit records carry no licence number. This is a gap in our coverage, not a statement about this firm’s licensure.
Direct contactNot in our data — we don’t fabricate firmographics.
Monthly activity
Apr ’250–4 permits/moNov ’25
permits per month permit value
Service area
Typical service area ~1 mi around Somerville
The p90 footprint of where Critical Mass Solar has pulled permits in Boston — drawn from all 11 of their indexed permits. It reflects detected permit activity, not a guaranteed service-area claim.
- Somerville11
Showing 11 of 11 permits by Critical Mass Solar in the indexed window · most recent first
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- Nov 24, 2025Residential Alteration35 Skehan St, Somerville Massachusetts 02143Alteration$22Kapplied Oct 14, 2025
- Nov 24, 2025Residential Alteration35 Skehan St, Somerville Massachusetts 02143Alteration$24Kapplied Oct 14, 2025
- Nov 24, 2025Residential Alteration35 Skehan St, Somerville Massachusetts 02143Alteration$22Kapplied Oct 14, 2025
- Oct 28, 2025Residential Alteration9 Cottage Ave, Somerville Massachusetts 02144Alteration$33Kapplied Oct 1, 2025
- Oct 27, 2025Residential Alteration30 Pembroke St, Somerville Massachusetts 02145Alteration$60Kapplied Oct 5, 2025
- Oct 27, 2025Residential Alteration9A Cottage Ave, Somerville Massachusetts 02144Alteration$33Kapplied Oct 1, 2025
- Oct 9, 2025Residential Alteration7 Moreland St, Somerville Massachusetts 02145Alteration$54Kapplied Sep 19, 2025
- Sep 25, 2025Residential Alteration10 Albion St, Somerville Massachusetts 02143Alteration$62Kapplied Aug 30, 2025
- Sep 22, 2025Residential Alteration39 Morrison Ave, Somerville Massachusetts 02144Alteration$48Kapplied Aug 13, 2025
- Apr 17, 2025Residential Alteration17 Thorndike St, Somerville Massachusetts 02144Alteration$37Kapplied Mar 24, 2025
- Mar 28, 2024Residential Alteration53 Highland Rd, Somerville Massachusetts 02144Alteration$51Kapplied Mar 22, 2024
Nov 24, 2025 applied Oct 14, 2025 | 35 Skehan St, Somerville Massachusetts 02143 | Residential Alteration | $22K |
Nov 24, 2025 applied Oct 14, 2025 | 35 Skehan St, Somerville Massachusetts 02143 | Residential Alteration | $24K |
Nov 24, 2025 applied Oct 14, 2025 | 35 Skehan St, Somerville Massachusetts 02143 | Residential Alteration | $22K |
Oct 28, 2025 applied Oct 1, 2025 | 9 Cottage Ave, Somerville Massachusetts 02144 | Residential Alteration | $33K |
Oct 27, 2025 applied Oct 5, 2025 | 30 Pembroke St, Somerville Massachusetts 02145 | Residential Alteration | $60K |
Oct 27, 2025 applied Oct 1, 2025 | 9A Cottage Ave, Somerville Massachusetts 02144 | Residential Alteration | $33K |
Oct 9, 2025 applied Sep 19, 2025 | 7 Moreland St, Somerville Massachusetts 02145 | Residential Alteration | $54K |
Sep 25, 2025 applied Aug 30, 2025 | 10 Albion St, Somerville Massachusetts 02143 | Residential Alteration | $62K |
Sep 22, 2025 applied Aug 13, 2025 | 39 Morrison Ave, Somerville Massachusetts 02144 | Residential Alteration | $48K |
Apr 17, 2025 applied Mar 24, 2025 | 17 Thorndike St, Somerville Massachusetts 02144 | Residential Alteration | $37K |
Mar 28, 2024 applied Mar 22, 2024 | 53 Highland Rd, Somerville Massachusetts 02144 | Residential Alteration | $51K |
Other top Residential Alteration contractors in Boston
- Homeworks Energy631 residential alteration
- Homeworks Energy352 residential alteration
- Rb Farina Roofing & Construction301 residential alteration
- The Home Depot223 residential alteration
- Renewal By Andersen193 residential alteration
- Renewal By Andersen191 residential alteration
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