Tried to get title search but it’s too late it seem and title company does not guaranty anything after charging $500.

All units are identical.

My terms are identical to yours as far as the 1-year lease with 3 options to renew (for them), 3% yearly rent increase, etc.

Ensure the state provides a clear title upon sale.

You'll need to hire a title company to find out. 

One caution when using crypto to acquire property is being aware the tax ramifications are identical to if you converted to cash first.

Gifting equity in a house may be more trouble than it is worth if you are not near the life-time exclusion1) Potentially having to get the property appraised everytime an equity is gifted2) Having a title company update the title every time3) Exemption of the gift tax return is normally for cash gifts below the annual gift tax exclusion, you may still need to file if you gift non-cash4) If there is partial ownership over several years, having to properly pro-rate certain items such as real estate taxes, mortgage interest and rental income if the property is a rentalBest of luck 

To find out the amount of the subordinate lien through the NSP program, you’ll want to pull the title report for the property.

It’s unnecessary and potentially problematic to add the ex-partner to the title before the sale.

You could also use "Doug's LLC and/or assigns" where Doug's LLC is your hypothetical company.As for the assignment contract, you can get one from an attorney for probably less than $1,000, you can also make a friend at a title company, they probably have a template they could give you.