I have to assume that your realtor listed it the Multiple Listing Network (MLS)?  

Instead of tying up your capital in a high-cost primary residence, consider taking the would-be down payment and investing it in out-of-state properties.This strategy allows you to diversify your portfolio across multiple assets, spreading risk while potentially generating cash flow and building equity in appreciating markets.

Test out.

If the tenant does not keep the basement clean to an extent that it might be attract mice.The contract does not have any explicit language stating "Failure to do so will results in penalties or such and such...".I dislike sending multiple reminders.

See the stress test above.  

The original deed listed multiple owners and percentages including her 8% interest, and now myself and the other owners want to sell the property---how do we get this retitled into my account (or my name) in order to facilitate the sale?

If the property has multiple meters they're most likely going to see it as an investment property and I think you're going to  be hard pressed to find one doing 5% down.

Just the lab test alone is $$.

I have the opportunity to list sell multiple acres of virgin waterfront property in Trinidad and Tobago.So I'm looking for potential investors as well.Which islands do your company typically operate?

Take that and use a 3-5x multiple and then you have a better idea of its worth.