Self Storage and Mobil Home Park Pricing

[Keith Schulz]

Is there a rule of thumb for expenses on mobil home parks and self storage units?

I'm looking at a property with 26 mobil homes, 13 of them park owned, and 53 self storage units. The gross annual income is $130,000 (according to the seller). ...and I have no idea what the expenses are (and I wouldn't trust the sellers numbers if they gave it to me).

What are your thoughts on how much to figure for expenses, and what this property might be worth?