Contract renegotiation based on inspection reports

[Bharath Raj]

I am under contract to buy a 4650 sq ft office building near Houston. The building was built in the early 1980s. The roof is a flat bituminous one (original). The general inspector reported more serious concerns with the roof than the roof inspector did. The roof inspector thinks that it may have another 4 to 6 years of life left on it. There have been recent leaks, as reported by a tenant, requiring change of ceiling tiles. There are 2 HVAC units, one of them being a 15 ton, and the second a 4 ton. The HVAC inspector marked both of them as being in poor condition. The seller' financials have regular HVAC repairs on them. These units are on the roof top. The heating was not cited. The HVAC replacement cost would run ~25 k (for both units + limited ductwork), per the contractor. I don't have the full report from the roof inspector yet. The insurance company is asking to see this report to commit. I am looking for strategies to renegotiate the contract in light of new information. I would appreciate your inputs.