Of course rapid resale of a property is one indication that you did NOT hold it for investment, but there are other facts that can rebut this.  

Also could listen to 165 with Natali Morris as she touches on some tax issues.As far as books go I read Tax-Free Wealth by Tom Wheelwright who's part of the Rich Dad team and enjoyed it.The research I've done so far indicated that you don't need to be averse to selecting an accountant who lives across the country from you so don't be afraid to give @Jim Kennedy or @Brandon Hall a call, they both seem to be great sources of knowledge from what I've found!

It looks as if the horizontal masonry grout lines "drop off" towards the outside corner of the building, indicating there could be some settling/shifting in the footings and walls below grade, which can be a pretty costly repair depending on the severity of the settlement.

@Cameron Norfleet yeah I know Cameron my posts were in response to the poster who was indicating that NOI is what determines value in a property.

By evaluating your current financial situation, you can get an indication of what path (investment strategy, budget, property types, location, etc.) best fits your personal situation and ultimate goals.

(a) Eligible Mortgages(i) Each Investment Property Mortgage must comply with Section 4203.4 (ii) Each Investment Property Mortgage must be an Accept Mortgage, an A-minus Mortgage or a Manually Underwritten Mortgage with a minimum Indicator Score as set forth in Exhibit 25, Mortgages with Risk Class and/or Minimum Indicator Score Requirements (iii) Mortgages with temporary subsidy buydowns are not eligible for delivery as Investment Property Mortgages (iv) Freddie Mac will purchase Investment Property Mortgages made to Borrowers who own more than one financed Investment Property, provided that the Investment Property Mortgage being sold to Freddie Mac is: ■ An eligible fixed-rate, level-payment Mortgage, or ■ A 7/1 or 10/1 ARM, and ■ Not an A-minus Mortgage(b) Special underwriting requirements An Investment Property Mortgage delivered to Freddie Mac must meet the following special underwriting requirements: (i) For newly constructed homes that are purchase transactions, the Borrower may not be affiliated with or related to the builder, developer or property seller (ii) Each Borrower individually and all Borrowers collectively must not own and/or be obligated on (e.g., Notes, land contracts and/or any other debt or obligation) more than six 1- to 4-unit financed properties, including the subject property and the Borrower’s Primary Residence.

In the following screen Vacancy and other Landlord expenses are being multiplied by 12 instead indicating the tool really meant to provide a monthly cost rather than cost divided by 10.

What are some good indicators of potential investments in storage facilities other than the obvious (unit mix, sale price, rents, NOI, Cap rate, etc.)

It doesn't seem to matter if there is yellow or red across a major nearby street, all that matters is if the street where the property is located is green...it has proven to be the number one indicator for buying a drama free property!!

In your case there are a lot of red flags that indicate they have every intention of taking over your property as their own and you will have no end of problems controlling anything they do.I would strongly advise you either reject these applicants or tell them to rub salt on any suggested changes to the lease.