A Due Diligence clause allows time for the buyer to obtain background knowledge about the property. When purchasing commercial real estate, you should include a due diligence period as a crucial element in your negotiations and in the contract.Purchaser shall be allowed to conduct the due diligence prior to purchasing the Real Property after the Effective Date to complete an examination of the Land to. Explore the nuances of Buyer Agency Agreements and real estate ethics in Ohio through a real-life case study. This is when a buyer performs checks and researches the property before committing to the contract for sale. Seller generally willing to provide property information at this point, because that might permit a shorter due diligence period in the. The transfer and recording of all documents conveying interest in land and mineral rights to track the ownership history of all real property in the county. Once the seller accepts your offer, the clock starts ticking on this due diligence period.