Complete a Building Permit Application via iPermits portal, and a upload Deed Restrictions Declaration Form (Individual or Business Entity). The Permit office of the Building Code Enforcement branch is the starting and ending point for most construction projects.Below are links that will take you through the process of getting a project number and submitting a project. Residential permits apply to any development that occurs on private property and not for commercial use. The Commercial Permits section objective is to review and permit commercial developments for compliance with all Harris County Regulations.