Contractor Profile
Sea-Dar Construction
Sea-Dar Construction is a diversified Boston contractor — 13 segment-eligible permits spanning 5 segments, led by residential alteration (54%) and multifamily alteration (15%). Its permit record in Boston spans 2018–2026. Reliable permit valuations total ≈$8.5M (across the 100% of filings with a valuation we can stand behind). Filing activity is steady over the last 90 days versus the prior 90.
First permit: Aug 6, 2018 (2,947d ago)Latest permit: Jun 23, 2026 (69d ago)
The sales record
- Market
- Boston
- Active
- 2018–2026 · 8 yrs
- Licence IDs on their permits
- —
- Reliable value
- $8.5M
- Coverage
- 100%
- Reliable filings
- 13
- Rank in Boston
- #500
- Permits (all-time, all segments)
- 13
- Filings 90d
- 1
- Filings 30d
- 0
- Latest permit
- Jun 23, 2026
Typical project size$250Ktypically $169K–$801K across 13 valued permits
Where they work
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 ’240–2 permits/moJun ’26
permits per month permit value
Service area
Typical service area ~1 mi around Cambridge
The p90 footprint of where Sea-Dar Construction has pulled permits in Boston — drawn from all 13 of their indexed permits. It reflects detected permit activity, not a guaranteed service-area claim.
- Cambridge13
Recent permitsLargest recent$3.0M· 57 Smith Pl, Cambridge, MA 02138
Showing 13 of 13 permits by Sea-Dar Construction in the indexed window · most recent first
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- Jun 23, 2026Commercial Demolition66 Winthrop St, Cambridge, MA 02138Demolition · Commercial$250Kapplied Jun 2, 2026
- Apr 2, 2026Residential Alteration89 Appleton St, Cambridge, MA 02138Alteration$50Kapplied Mar 11, 2026
- Jan 29, 2026Residential Alteration10 Appleton St, Cambridge, MA 02138Alteration$750Kapplied Nov 21, 2025
- Jul 14, 2025Multifamily Alteration93 Winthrop St, Unit WSC2, Cambridge, MA 02138Alteration$195Kapplied Jun 26, 2025
- Nov 14, 2024Residential Alteration27 Fayerweather St, Cambridge, MA 02138Alteration$192Kapplied Jul 3, 2024
- Nov 6, 2024Residential Alteration17 Fresh Pond Pkwy, Cambridge, MA 02138Alteration$20Kapplied Oct 25, 2024
- Aug 13, 2024Residential Demolition17 Fresh Pond Pkwy, Cambridge, MA 02138Demolition · Residential$75Kapplied Jul 24, 2024
- Mar 7, 2024Residential Demolition16 Brattle Cir, Cambridge, MA 02138Demolition · Residential$169Kapplied Sep 29, 2023
- Feb 1, 2024Residential Alteration27 Fayerweather St, Cambridge, MA 02138Alteration$925Kapplied Dec 21, 2023
- Aug 29, 2023Residential Alteration8 Highland St, Cambridge, MA 02138Alteration$1.3Mapplied Jun 5, 2023
- Jun 28, 2023Multifamily Alteration975 Memorial Dr, Unit 407, Cambridge, MA 02138Alteration$801Kapplied May 26, 2023
- Oct 27, 2020Commercial Alteration57 Smith Pl, Cambridge, MA 02138Alteration$3.0Mapplied Sep 8, 2020
- Aug 6, 2018Residential Alteration975 Memorial Dr, Unit 211, Cambridge, MA 02138Alteration$790Kapplied Jul 26, 2018
Jun 23, 2026 applied Jun 2, 2026 | 66 Winthrop St, Cambridge, MA 02138 | Commercial Demolition Commercial | $250K |
Apr 2, 2026 applied Mar 11, 2026 | 89 Appleton St, Cambridge, MA 02138 | Residential Alteration | $50K |
Jan 29, 2026 applied Nov 21, 2025 | 10 Appleton St, Cambridge, MA 02138 | Residential Alteration | $750K |
Jul 14, 2025 applied Jun 26, 2025 | 93 Winthrop St, Unit WSC2, Cambridge, MA 02138 | Multifamily Alteration | $195K |
Nov 14, 2024 applied Jul 3, 2024 | 27 Fayerweather St, Cambridge, MA 02138 | Residential Alteration | $192K |
Nov 6, 2024 applied Oct 25, 2024 | 17 Fresh Pond Pkwy, Cambridge, MA 02138 | Residential Alteration | $20K |
Aug 13, 2024 applied Jul 24, 2024 | 17 Fresh Pond Pkwy, Cambridge, MA 02138 | Residential Demolition Residential | $75K |
Mar 7, 2024 applied Sep 29, 2023 | 16 Brattle Cir, Cambridge, MA 02138 | Residential Demolition Residential | $169K |
Feb 1, 2024 applied Dec 21, 2023 | 27 Fayerweather St, Cambridge, MA 02138 | Residential Alteration | $925K |
Aug 29, 2023 applied Jun 5, 2023 | 8 Highland St, Cambridge, MA 02138 | Residential Alteration | $1.3M |
Jun 28, 2023 applied May 26, 2023 | 975 Memorial Dr, Unit 407, Cambridge, MA 02138 | Multifamily Alteration | $801K |
Oct 27, 2020 applied Sep 8, 2020 | 57 Smith Pl, Cambridge, MA 02138 | Commercial Alteration | $3.0M |
Aug 6, 2018 applied Jul 26, 2018 | 975 Memorial Dr, Unit 211, Cambridge, MA 02138 | Residential Alteration | $790K |
Other top Residential Alteration contractors in Boston
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- The Home Depot223 residential alteration
- Renewal By Andersen193 residential alteration
- Renewal By Andersen190 residential alteration
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