Our Sacramento tax due diligence accountants can make sure that your company and asset purchases have been assessed before the transaction is executed. The development manager covers the ins and outs of the commercial real estate due diligence process as part of their many responsibilities.Sacramento (Main Office). In a CAR Residential Purchase Agreement, the default contingency period for due diligence is typically 17 days from the date of acceptance of the offer. Boyd Law in Sacramento has successful and experienced business purchase and sale attorneys offering free legal consultations. Due Diligence: Ensure proper and comprehensive due diligence to identify and address any potential or current legal issues.