Window Cleaning - Commercial, High Rise and Residential. Pressure/Soft Washing - Commercial and Residential. Building Restoration - Caulking and Waterproofing. Larry's Window Service, Inc. performs commercial, high rise, and residential window cleaning as well as post construction window cleaning, glass restoration, gutter cleaning, exterior house washing, commercial and residential pressure cleaning, deck cleaning, caulking, waterproofing and more. Larry O'Connor founded Larry's Window Service, Inc. in 1969. It has grown from a one-person business to over 60 employees serving all of Iowa including Des Moines Area, Ames, Ft Dodge, Waterloo, Cedar Falls, Cedar Rapids, Iowa City, Dubuque, Marshalltown, Newton and many more. Larry's Window Service, Inc. has been operated since 1990 and owned since 2000 by Larry's two sons Carl and Dean O'Connor.