2 Duplexes on 1 lot - How to calculate CapEx and Maint

[Jeff Stansberry]

Hi,

I'm analyzing a property in Cleveland and I'd like some advice on how to accurately calculate my expenses so I can submit the appropriate offer. 

It's 4 units because 2 duplexes on one lot and bring in a total of 2500 in monthly rent. 

I have 10 percent for CapEx and 6 percent for monthly maintenance. Since it's 2 separate units, I should take into account that's 2 roofs, furnaces, water heaters, etc for expenses. Should I double my CapEx to 20 and Maintenance to 12? It seems high but it's 2 structures I need to worry about versus it being a 4 Plex.

Without Maint and Capex I have $1057 in monthly income. How much I choose to subract for CapEx and Maint might make or break my wanting to offer.

Thanks!

Purchase Price 120,000

Monthly Rent 2500

Vacancy 6% 125

Leasing Agreement 125

Mortgage P/I 485

Taxes 388

Insurance 170

Water and Sewer 150

Maint? CapEx?