A Building Permit is required for an owner or contractor of a property to construct any residential building with a floor area greater than 120 square feet. RULE 115 - CONSTRUCTION AND APPLICATION OF RULES (AMENDED, EFF.The Single Resource for County Permits and Applications. 51.0310 Failure of Permittee to Protect the Road or the Traveling Public or Complete the Work. This book is an official publication of the State of California. San Bernardino, CA, has set up rules to support the making of accessory dwelling units (ADUs), like duplexes. The Firm has a complete working knowledge of the fundamentals of construction law and litigation, such as scope-of-work disputes and construction failures. Except as otherwise indicated, the following requirements shall apply to all signs in the City of San. Keeping Job Sits Safe is a California Law. Find the best construction attorney serving San Bernardino County.