Purchase Agreement Question

[Bryan Blancke]

I am interested in buying a triplex. There was a fire and the current tenants are in temporary housing. The house is being renovated with the insurance funds. I want to get the property, but it seems silly to make an offer and enter a purchase agreement on something which I have yet to see the finished product. Is it okay to lock this property down in a purchase agreement so someone else does not buy it, but change my offer based on the outcome of the renovations?