How does the property do if you use 50% of rent as expenses not including P&I?  

Including a contingency in the first 3 days after the contract is accepted is a good idea especially if there are tenants. 

If you're worried about break-ins, then you need to secure it.We give our clients several options, including removing & storing the mechanicals to avoid theft.Also, check with your municipality to see if they have any requirements.

Some of my leases need to be updated, including increasing security when increasing rent; putting in clear violations (such as tenants using electrical heaters, which is a fire hazard); having a reliable attorney ready should any legal issues arise.

This would also include any new Tenants just as above in sect (f)(1).

If so, have you ever done a buy and hold partnership deal that includes one partner invests and the other lives in as principal residence for 2+years during renovation and manages property until sale? 

Have you included a clause in the lease agreement indicating that they will be responsible for damages beyond normal wear and tear?

It’s crucial to ensure you’re compliant with your city’s requirements, including permits, taxes, and safety regulations.Ok - that was just a stab at it. 

Also including the tenant friendly restrictions limiting any ability to evict still in nj

etc.Tax advantaged accounts include: 401-k and Roth IRA contributions, no HSA.Looking for a professional with proven success, references to others perhaps bigger pockets members who have successful househack strategies.Thanks!