That's why I subscribe to the philosophy of not creating artificial vacancy, and will ride a tenant in a distressed unit for as long as possible, because as soon as they leave, I'll have to spend $10-20k to get the unit in rentable condition again.  

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.

Off market 8 unit brick apartment building in Cleveland built in 1920, Manhattan Beach areaPurchase price - $145000Rehab costs - $30000 (cosmetic consisting of windows/paint/flooring/trim/carpentry)(6) 1-1 units under market, currently at $475/mo, raising to $550/mo after rehab (2) 2-1 units at $600/mo, raising to $625/mo after rehabElectrical, roof, foundation, water heaters, furnaces solidRent Roll $54600Property management 8% $4370Vacancy est 10% $5460Maintenance est 14% $7644Taxes $4200Insurance $1900Water $4000Trash/lawn/snow $1200NOI $25826, or 14.4% ROI at low end $269 NOI per door per monthThese are high ball estimates, the building is older, 1920, but it is solid, just needs a new dress for these solid bones.

.- closing costs- repairs and pre-rent holdings- mortgage- property taxes- insurance- utilities- HOA's - lawn care/snow removal - I try to put this on the tenants in possible, even if I have to discount the rent a bit- vacancy rate: 5%- repairs rate: 5%- Cap-ex: 10-15% dependent on age and condition of property- I tend to look only at multi-family, much better of a return if bought correctly, not to say SFR's aren't good.

YOUR CITY classifieds), and a lawn sign.There are quite a few tenant screening companies out there.

For a duplex, throw out a lawn sign. 

Also do I have to provide a lawn mower?

You won't be cleaning gutters, painting your exterior or replacing/fixing your roof, mowing/watering your lawn, removing snow, trimming trees, maintaining the driveway or the deck, pool,  etc but I will.

maintenance costs (snow & lawn care) 

Tenants pay heat & electric and take care of snow and lawn.