What would be the best strategy to structure my offer?

We figured that chances were very low of encountering a burned down condo or one with extreme structural issues.

One unit was completed a couple months ago and we did tile, and granite, new cabinets, total new bathroom.

I'm remodeling about 10 bathrooms and I wanted to know if I should use subway tile or fake marble shower walls.

Our HOA documents clearly note that any structural change or change to the exterior of the home requires written approval of the trustees.

This is where you propose a long term deal structured as a payment to him from your positive cash flow. 

He also didn't utilize the 1/2 in the ground basement that has two rooms and a bathroom. 

I know federal law only says structures built  before 1978 and this was built in 1986, however when it comes to safety and your family, I understand you cannot be too careful.Please let me know when to expect this testing so I can arrange for a representative to be onsite.Thank youNOTE: Never send anything like that to someone on a house before 1980ish. 

The last thing that comes to mind is a hybrid debt instrument but that could get a little tricky.You aren't going to get any legal advice on here so if you are legitimately concerned you will want to talk to an attorney about your specific concerns and they will let you know if you can structure around it.

Since these are friends, you could sit down and have an open dialogue about potential ways to structure the deal.