For uniformity, please submit your proposal on the Proposal Form included in this Project Manual. Benton County is soliciting proposals for a Five (5) year contract for a Cleaning Service for our County buildings.In this post construction cleaning proposal template, we've set out an example case study. It will also show a sample proposal bid for service with all the different services required. Introduction. The City of Osseo is soliciting proposals for a one (1) year Agreement for cleaning services for the. Bids must be submitted to City Hall, 111 West 8th Avenue, P.O. Box 348, Floodwood, MN. 55736, no later than noon, Wednesday, November 20, 2024.