I would advice keep a security camera in house to record the entire activities in home and prove tenants that it is their illusion.

Finally, when the amount of the late fees totaled the amount of the security deposit, my PM told me that the tenant paid late every month and hadn't paid the fees.

Always felt the "nomad" method/live-in to rental was better for starting off and scaling. 

His signature was on the lease dated 6/21, which was the same date they provided us the old lease - we assume to appear that they did not have the new lease upon request.Terms of the original lease provided to us on 6/21 for month to month leasing terms:- $1,200.00- Security deposit given- No smoking- Unit cannot be used to run business- One garage spotTerms of new lease provided 7/29 backdated to start lease term on 6/1- $1,200.00- No security desposit- Tenant can run business out of unit- Tenant has been and will continue to smoke in unit (no joke this is essentially how it was worded)- Tenant has the entire garage (two car garage)We signed the p&s with the contingency that no leases should be modified and no new leases would be signed unless we vetted the prospective tenant.We have been reading some forums and are wondering what our options are.

Is there an app that is more secure than others?

Now, I grant that this place will profit over time because it is appreciating nevertheless, and they have a great rental market (most the units are rented and it is a very quiet and secure community).

You are the gaurantor on the note secured by house to avoid Dodd Frank owner occupied issues.

My team recently put together a well-researched and handy list of landlord-tenant statutes by state that just covers the basics: security deposits, eviction issues, legal recourse against tenants, deduct-and-repair rights, etc.

If you want to learn some more about the Joint Venture method I mentioned above, my recent Bigger Pockets article on protecting yourself in a joint venture could be useful for your research.

You also may want to look into the HELOC method in hacking your mortgage down in a quick ammount of time.