Contractor Profile
Folan Waterproofing & Construction CO.
Folan Waterproofing & Construction CO. concentrates in commercial alteration in Boston (93% of its 28 segment-eligible permits), with secondary activity across 1 other segment. Its permit record in Boston spans 2018–2025. Reliable permit valuations total ≈$9.5M (across the 100% of filings with a valuation we can stand behind).
First permit: Aug 6, 2018 (2,948d ago)Latest permit: Oct 22, 2025 (314d ago)
The sales record
- Market
- Boston
- Active
- 2018–2025 · 7 yrs
- Licence IDs on their permits
- —
- Reliable value
- $9.5M
- Coverage
- 100%
- Reliable filings
- 28
- Rank in Boston
- #194
- Permits (all-time, all segments)
- 28
- Filings 90d
- 0
- Filings 30d
- 0
- Latest permit
- Oct 22, 2025
Typical project size$134Ktypically $68K–$472K across 28 valued permits
Where they work
Primarily Commercial Alteration — 93% of 28 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
Aug ’250–3 permits/moOct ’25
permits per month permit value
Service area
Typical service area ~1 mi around Cambridge
The p90 footprint of where Folan Waterproofing & Construction CO. has pulled permits in Boston — drawn from all 28 of their indexed permits. It reflects detected permit activity, not a guaranteed service-area claim.
- Cambridge28
Recent permitsLargest recent$1.6M· 99 Prospect St, Cambridge, MA 02139
Showing 20 of 28 permits by Folan Waterproofing & Construction CO. in the indexed window · most recent first
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- Oct 22, 2025Commercial Alteration314 Main St, Cambridge, MA 02142Alteration$12Kapplied Oct 9, 2025
- Oct 22, 2025Commercial Alteration17 Tudor St, Cambridge, MA 02139Alteration$49Kapplied Oct 9, 2025
- Oct 22, 2025Commercial Alteration148 Sidney St, Cambridge, MA 02139Alteration$23Kapplied Oct 9, 2025
- Sep 23, 2025Commercial Alteration37 Kirkland St, Cambridge, MA 02138Alteration$798Kapplied Aug 29, 2025
- Aug 14, 2025Commercial Demolition208 Cambridge St, Cambridge, MA 02141Demolition · Commercial$107Kapplied Jul 31, 2025
- Jun 13, 2024Commercial Alteration472 Broadway, Cambridge, MA 02138Alteration$181Kapplied May 28, 2024
- Apr 23, 2024Commercial Alteration34 Kirkland St, Cambridge, MA 02138Alteration$94Kapplied Mar 27, 2024
- Jan 18, 2024Commercial Alteration11 Garden St, Cambridge, MA 02138Alteration$66Kapplied Jan 8, 2024
- Jan 18, 2024Commercial Alteration5 Magazine St, Cambridge, MA 02139Alteration$1.0Mapplied Jan 4, 2024
- Jun 21, 2023Commercial Alteration11 Harvard Yard, Cambridge, MA 02138Alteration$255Kapplied Jun 6, 2023
- Mar 27, 2023Commercial Alteration8 Plympton St, Cambridge, MA 02138Alteration$675Kapplied Feb 6, 2023
- Mar 22, 2023Commercial Alteration65 Mt Auburn St, Cambridge, MA 02138Alteration$1.5Mapplied Jan 20, 2023
- Feb 21, 2023Commercial Alteration1374 Massachusetts Ave, Cambridge, MA 02138Alteration$68Kapplied Jan 20, 2023
- Oct 14, 2022Commercial Alteration38 Sidney St, Cambridge, MA 02139Alteration$138Kapplied Oct 7, 2022
- Oct 14, 2022Commercial Alteration64 Sidney St, Cambridge, MA 02139Alteration$196Kapplied Oct 6, 2022
- Jul 6, 2022Commercial Alteration8 Plympton St, Cambridge, MA 02138Alteration$280Kapplied Jun 7, 2022
- Jul 6, 2022Commercial Alteration10 Akron St, Cambridge, MA 02138Alteration$467Kapplied Jun 7, 2022
- Apr 27, 2022Commercial Demolition99 Prospect St, Cambridge, MA 02139Demolition · Commercial$1.6Mapplied Apr 11, 2022
- Jun 7, 2021Commercial Alteration1400 Massachusetts Ave, Cambridge, MA 02138Alteration$126K
- May 24, 2021Commercial Alteration5 Cowperthwaite St, Cambridge, MA 02138Alteration$507Kapplied May 17, 2021
Oct 22, 2025 applied Oct 9, 2025 | 314 Main St, Cambridge, MA 02142 | Commercial Alteration | $12K |
Oct 22, 2025 applied Oct 9, 2025 | 17 Tudor St, Cambridge, MA 02139 | Commercial Alteration | $49K |
Oct 22, 2025 applied Oct 9, 2025 | 148 Sidney St, Cambridge, MA 02139 | Commercial Alteration | $23K |
Sep 23, 2025 applied Aug 29, 2025 | 37 Kirkland St, Cambridge, MA 02138 | Commercial Alteration | $798K |
Aug 14, 2025 applied Jul 31, 2025 | 208 Cambridge St, Cambridge, MA 02141 | Commercial Demolition Commercial | $107K |
Jun 13, 2024 applied May 28, 2024 | 472 Broadway, Cambridge, MA 02138 | Commercial Alteration | $181K |
Apr 23, 2024 applied Mar 27, 2024 | 34 Kirkland St, Cambridge, MA 02138 | Commercial Alteration | $94K |
Jan 18, 2024 applied Jan 8, 2024 | 11 Garden St, Cambridge, MA 02138 | Commercial Alteration | $66K |
Jan 18, 2024 applied Jan 4, 2024 | 5 Magazine St, Cambridge, MA 02139 | Commercial Alteration | $1.0M |
Jun 21, 2023 applied Jun 6, 2023 | 11 Harvard Yard, Cambridge, MA 02138 | Commercial Alteration | $255K |
Mar 27, 2023 applied Feb 6, 2023 | 8 Plympton St, Cambridge, MA 02138 | Commercial Alteration | $675K |
Mar 22, 2023 applied Jan 20, 2023 | 65 Mt Auburn St, Cambridge, MA 02138 | Commercial Alteration | $1.5M |
Feb 21, 2023 applied Jan 20, 2023 | 1374 Massachusetts Ave, Cambridge, MA 02138 | Commercial Alteration | $68K |
Oct 14, 2022 applied Oct 7, 2022 | 38 Sidney St, Cambridge, MA 02139 | Commercial Alteration | $138K |
Oct 14, 2022 applied Oct 6, 2022 | 64 Sidney St, Cambridge, MA 02139 | Commercial Alteration | $196K |
Jul 6, 2022 applied Jun 7, 2022 | 8 Plympton St, Cambridge, MA 02138 | Commercial Alteration | $280K |
Jul 6, 2022 applied Jun 7, 2022 | 10 Akron St, Cambridge, MA 02138 | Commercial Alteration | $467K |
Apr 27, 2022 applied Apr 11, 2022 | 99 Prospect St, Cambridge, MA 02139 | Commercial Demolition Commercial | $1.6M |
Jun 7, 2021 | 1400 Massachusetts Ave, Cambridge, MA 02138 | Commercial Alteration | $126K |
May 24, 2021 applied May 17, 2021 | 5 Cowperthwaite St, Cambridge, MA 02138 | Commercial Alteration | $507K |
Sites Folan Waterproofing & Construction CO. returns to1 in Boston
Addresses where Folan Waterproofing & Construction CO. has pulled repeat permits and the site itself has a deep permit history (25+ permits, all contractors). Each links to that parcel’s full record.
Other top Commercial Alteration contractors in Boston
- Wise Construction192 commercial alteration
- Siena Construction Corporation166 commercial alteration
- The Richmond Group84 commercial alteration
- Pidc Construction69 commercial alteration
- Gloucester Builders68 commercial alteration
- Berkeley Building Company67 commercial alteration
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