Dual Purpose valuation

[Bruce Ellerd]

I'm looking at a property that has dual purposes. The property has a house and rental storage units. With the storage units being a retail environment I have a good idea how to valuate that side of the property, but not sure what to add in for the house. Should I valuate it as based on storage management office? It is a larger house and not the typical on site residence for a  storage manager.

Any ideas are appreciated. Thank you -Bruce