Standard Plans and Details are provided as an additional resource to permit applicants to help expedite the plan check and permit issuance process. This handout is designed to assist you in preparing your commercial building plans for submittal to the Plan Review Division of Building and Safety.The Riverside house plan lives so much larger than its small size. Its incredible curb appeal will stand out in any neighborhood. The relationship of the building to the boundaries of the property shall be shown on the plan using dimension lines. Modern Plan with Open Layout. In order to begin your construction project, you have to request permission from the county of Riverside's Department of Building and Safety. Prior to start of construction, two (2) complete approved sets of construction plans and specifications shall be provided to the County.