Duplex is in 100% move in ready condition and recently remodeled.

Houston seems to have more weather problems, so do your best not to buy previously flooded properties, or properties that have the potential to flood in the future.   

Both of these houses are in good condition and have long term tenets living in them. (6yrs) and (3yrs).

You need to look at the sale of duplexes close by to start formulating what they go for, then perhaps add a price adjustment upwards for price/condition, assuming other duplexes are old.

A family began to rent our newly built house in June and after about a month, the wife had been diagnosed with a serious medical condition.

Similar square footage and condition.

These are properties that have sold near the subject property with a similar: build/construction type, lot size, building size, interior condition, property type, year built.

Worried we won’t finish according to the bank’s timeline due to weather delays etc....in that event what can I do as a backup plan in case the full loan is needed to be repaid?

Houses in similar condition etc as yours.

If the firm you approach does not offer these privileges, keep searching until you find a company that will allow you to contact the higher management whenever you want to discuss the condition of your property with them.6.