I see the day coming when you can't afford to manage a small portfolio of rental properties.The tough part for me has been getting maintenance done for little stuff.

My GC was the one who suggested tile given my concerns about upkeep, maintenance, and etc.At first, I was skeptical and not a fan of the tile idea (personal preference). 

You (and he) both should have received certain rights for maintenance of "common" systems or those that by necessity exist across the "lot line".

taxes, insurance, utilities, wages, maintenance, grounds keeping, snow removal, any other common areas, laundries, playground, club house.What are the current owner's income/  Tax returns would be nice to see. 

After estimating maintenance expenses, If I purchase the single family, condo, or co-op It'll take me 8-9 months to save another 10k, which then can be used for the next property.

Bless their hearts though, they really struggle with getting positive results that experienced note investors achieve routinely.  

Here's an example:-$230K sales price w/20% down is $184K loan amount-30 year fixed rate mortgage at 4.5% is about $950/month-Rent=$2000/month-Mortgage=$950/month-Taxes=$250/month (guessing)-Vacancy=$200/month(10%, which is about 1-month per year)-Insurance=$110/month (guessing)-Management=$200/month (10%)-Maintenance=$200/month (10%)=$90/month cash flowThese are estimates since I do not know your tax rate and insurance.

You need to add repairs & maintenance.  

This amount is reasonable if a tenant only has to apply to one rental before being accepted, but it can become burdensome quickly to renters in our area who routinely apply to several units before being accepted.  

Do not confuse this with upkeep and maintenance requirements of your lease.