Menu Home

Sound Insulation


Sound insulation modifications performed on single-family homes consist of the installation of Sound Transition Class (STC 44) rated windows and solid-core exterior doors. Modifications to ventilation systems and chimneys are also performed as necessary. Funding for the program is typically provided by the Federal Aviation Administration at approximately 80%, with the remainder from the Port of Seattle.

Sound Insulation Statistics

  • Over 9,400 single family homes sound insulated
  • 5 condominium complexes sound insulated (246 total individual units)
  • Implemented a $100 million agreement with the to Highline Public Schools for sound insulation ($50 million from the Port and $50 million from the FAA) in noise impacted school buildings being constructed as part of the District’s capital facilities improvement plan – eight of fifteen identified schools are complete
  • $6 million provided to the Highline College to assist in sound insulation of buildings located on the college campus – 14 buildings were completed through this program.


  • Funding for sound insulation comes from approximately 20% Port of Seattle funds and 80% FAA Airport Improvement Project (AIP) grant funds.

Does your home qualify?

Per FAA guidelines, all homes have to be located within the approved noise remedy boundary for Sea-Tac Airport.

Please contact the Airport Noise Office or call 206-787-5393 for more information and official eligibility.

Back to Top