Rental income is a function of the competition from other properties as compared to total demand for housing.

Most clerk of court Official Records searches have a function to search by legal description, as opposed to name.  

Here's how:In most larger cities, there is usually at least one CPA firm who's main function is to fight for property tax values.

If you mean the mortgage underwrite, it needs to be a complete and functional home with no apparent health or safety issues.The bathrooms can be old, nasty, and gross, but they must be complete and functional. 

Is it a function of units or time or variety or spectrum of industry exposure?

I think by about this time next year we'll start to see some fundamental changes in the way major markets function nationally.  

For example maybe the issue is not that the landlord is keeping rents artificially low but that walking on the living room floor is like walking on a boat and there's significant functional obsolescence throughout the assetLandlords do often keep their rents artificially low, but if you were a lender you would agree that someone throwing good money away is also a little insane and potentially suspect.So these are just a few of the reasons that you and/or your lenders and investors are forced to value your target property on how the property is actually currently performing.On the other hand, as opposed to doing a single valuation you should be doing a full pro forma.

Ricardo Olea in my opinion Quickbooks has very versatile functionality and is very user friendly.

(ie.. the doors open, the windows work, the furnace works, and smoke alarms are functional with 10yr batteries).  

My bank will not provide a loan without verification that all the utilities in the given property are functional.