Estimated Costs Lakewood Ohio

[Matthew Jure]

Hi BP community! I am ready to buy a double+ in Lakewood Ohio, but it seems that out of pocket ROI seems low (~5-6%) and I am curious what others are estimating as expenses. The houses are all about 100 years old so I estimate my maintenance costs at 15% of my gross rents (GSI). Also, I don't include mortgage payments in my calculation because I'm paying cash. How are others estimating expenses in the Cleveland area for something similar?

Out of pocket ROI = (all annual expenses + annual capex) / all cash invested

Here's my expense breakdown on a double: 

Maintenance: 15% of GSI

Property Management: 10%

Water/Sewer/Garbage: $150/mo 

Insurance: $65/mo

Capex: 6% of GSI

Taxes: County website

Any insight is appreciated!