@Snehann Kapnadak you said that one unit is vacant currently, does it need much work to get it ready to rent? Also, are you basing your CoC, etc. on all units being occupied? Cause based on my calculations, unless the 4th unit is occupied you're negatively cash flowing by ($3)/month:
By month (w/ 3 units rented):
Income $2,288
Expenses:
Debt servicing of $150k @ 5.5% over 30 yrs $852
Electricity $135
Water/sewer $280
Garbage $75
Insurance $120
Taxes $140
Other (lawn/legal) $117
R&M $114
CapX $229
Management $229
Profit(loss) ($3)
However if fully occupied @ $3,050/month of income and including more normal vacancy of 8.33% it looks like you cashflow about $316/month.
One thing I noticed is that you're taxes look low to me, I'm going to guess that those are based on a much lower property value than $200k, so be prepared for those to jump up in year 2 of ownership. You might check out the local county assessors site and see if it shows how taxes are calculated for the property, maybe project what they will be in Yr 2.
My biggest issue with the property is that, if you use all the same assumptions except a downpayment of $0 and recalculate, the property negatively cash flows (even if fully occupied), so you're basically just using $50k to buy a couple hundred dollars in cash flow per month.
Good luck with your search for a property!