Tiny House Plan Approval

I am starting a business manufacturing tiny homes and need assistance with getting the plans approved according to building codes. The engineering work has already been completed by a design engineer and only requires validation. I am looking to establish a long-term relationship for future design approvals. The basic design is straightforward, using a skid base of either 12x24 or 12x25.6, depending on the specific design. Please let me know if you are interested.