Being in control of the contract, understanding the market you're buying in, and securing the right  price are the foundations of a solid deal.

For your existing primary, you will need to have it leased with the security deposit and first month's rent collected.

Security systems are a giant headache for short term rentals.

Think of all the things that could go wrong and see if the lease addresses them: unauthorized pets or tenants, early termination, security deposit, lease violations, late rent, eviction, lawn maintenance, parking, etc.5.

I secured my first duplex in Rochester and it is fully rented generating better than expected returns.

. - that were new when the S8 tenant moved in 1-2 years ago.Another challenge of finding S8 tenants is many EXPECT you to waive application fees and security deposits. 

You can get another $5-10 per night just for allowing pets (don't forget to take a security deposit). 

Keep in mind that most residential mortgages are conforming loans that are resold on the secondary market and bundled into mortgage backed securities.

Always ask for references and examples of similar projects (pictures)The Red Flags you have to Avoid:Lowball bids (too good to be true often is).Poor communication or delays in responding.Hesitation to provide references or sign a detailed contract.Cash-only deals or pushy behavior to secure the job.

There's also the possibility of becoming the squeaky wheel by calling the police (*not* security) to report the matter.