Roof replacement in Parma - New Owner

[Bhakti Kshirsagar]

We recently purchased this duplex in Parma, OH with conventional mortgage. The lender did their inspection and the appraisal came higher with few red flags with roof but nothing major. 2 months into this ownership, we get a notice from the city about roof replacement and couple other violation and we are looking at a cost of upwards of 10K. Any inputs pls? What can we do better next time to avoid this?