Due diligence, meaning the audit of a tenement house before purchase

Before you buy a tenement house, you must scan it like an X-ray. Due diligence is a rigorous technical (roof, ceilings, installations) and legal (debts, easements, zoning plans, claims) audit. One mistake can cost millions. During such an audit, direct contact with the owner allows for honest and quick access to documents, which agents often try to embellish or hide.