Fully verified Floodproofing / drainage Seymour, CT · New England Coast

Connecticut Basement Systems, Inc.

Large, long-established Connecticut installer with an active state HIC record and extensive coastal-county coverage.

Who runs it

  • Lawrence Janesky Owner and President

Credentials & verification

State license
HIC.0526823, unverified, re-check with board
BBB
A+, accredited
Years in business
39

Services

  • basement waterproofing
  • French drain systems
  • sump pump installation
  • battery backup sump systems
  • crawl space encapsulation
  • foundation repair
  • dehumidification

Service area

Milford, CT · Fairfield, CT · Old Saybrook, CT · Stratford, CT · Fairfield County, CT · New Haven County, CT · Middlesex County, CT · New London County, CT

Reviews (per platform, unblended)

Our verification notes

Type B only: appropriate for groundwater, drainage and sump mitigation, not storm-surge structural elevation or dry floodproofing of occupied residential space. License status shown active through March 31, 2027, but retained as verified:false per directory policy. Review volume is high; complaints and scope suitability still require job-level diligence.

Sources checked

  • Connecticut eLicense record
  • BBB business profile
  • Town of Seymour economic-development report identifying the company as a local employer

Last verified 2026-07-16. This is an independent listing, not an endorsement, and we are not affiliated with Connecticut Basement Systems, Inc.. Confirm the current license, insurance and references directly before signing any contract.

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