Aluminum siding, pitched roof (not sure on useful age). wood front porch that needs updating.

I have always had a small group of people because my goals are not even fathomable to people my age.  

If it was built in 1860 I have reservations because of the age.

@Benjamin Wishart Just needed a legitimate answer to that age old business question, "do you have a card?"

Look back to when there were sales in both age groups.  

Your expenses could be more or less depending on the condition and age of the property, and since this owner doesn't seem to have it together, I'd err on the side of caution and expect the worst. 

I am the anti-guru advice.

Vacancy can be 0-25% depending on turn over and what month they move out.Maintenance depends a bit on age of home but I would use about 0.1% to 0.2% per monthCap Ex depends on traditional (.5% a month) or private money (1%)Sales Expenses:  6-8% for closing and realtor plus about 2-4% for holding costs

Born between 1982 and 1995, Millennials (also known as Generation Y) are around the ages of 16-35 years old.

I usually look at the age of the roof, hot water heater,  furnace, etc.