DA Approval sidestepping restrictive R10 codes

My goal is to sidestep restrictive R10 codes in order to build desired extensions and additional buildings. To achieve this, I have a detailed plan already in place and am now in need of assistance with presenting the plan to relevant officials for approval. I would like to engage a knowledgeable freelancer who is familiar with such a process and can help me obtain the approvals needed in a timely and cost-effective manner. Experienced in handling potential legal issues that might arise along the way would also be a big plus.