In this video we'll discuss how to write a professional looking construction proposal that is more than a single page document. Map out a realistic timeline for the project, breaking it down into phases of work.Residential permits apply to any development that occurs on private property and not for commercial use. Fill out and return to the Harris County Purchasing Department ONE (1) complete proposal form in an appropriately sized envelope or box. Harris County HFC is accepting bids for Requests for Proposals on various projects that expand affordable housing for low-to-moderate-income.