Company History

575+ Combined Years of Experience in Window and Door Replacement

At Lake Washington Windows and Doors, we know you need to hire a contractor you can trust. One with experience, honesty, and reliability – and one with a stellar reputation. This timeline shows our company’s achievements, milestones, and professional background to give you confidence in who you’re hiring!



  • Our company was founded by Adrian Au. A local University of Washington graduate, he worked for 19 years at Milgard before starting Lake Washington Windows and Doors. When Adrian opened up shop in 2008, he immediately started offering Milgard products. He wanted to give Washington homeowners an experience unmatched by other contractors. He wanted his company to serve as a contractor that was reliable and honest, one that homeowners could trust.

Commercial Division

  • Started commercial division serving local contractors

Leak Armor

  • Developed a unique, industry-leading installation process called the Leak Armor Guarantee. Leak Armor is an in-house developed installation process that protects your installed windows and increases their energy efficiency and longevity.
Early 2020

Marine View Acquisition

  • Acquired Marine View Windows and Doors. This helped us expand our service area and open our Tacoma showroom
Late 2020

Service Area Expansion

  • Expanded our service area to include Kitsap County and Pierce County.


  • Established company headquarters in Renton, WA. Became a dealer and started selling Provia Entry Doors


  • Became a dealer and started selling WinDor windows and doors.

Seattle Showroom

  • Opened a new window and door showroom in Seattle

Growth & Expansion

  • We continue to grow and expand. We are currently working on expanding our service area and opening new divisions to serve more homeowners, like you