Do you have an estimate for what a lawyer will charge for this?

If you don’t know how to estimate repairs, I would recommend using a tool like Blue Hammer.

I don't yet have an estimate on cost.I've never used insurance for something like this because A) I've never had an expensive repair and B) I fix most stuff myself on my Denver units.Question is: Should I file a claim or will the insurance company raise my rates so much that it makes it not worth it. 

For example, if you are in a 24% tax bracket and the house is valued at $200,000, your potential tax savings might be around $48,000 (24% of $200,000), but that's a rough estimate and assumes you're itemizing.It's always a good idea to consult a tax professional to ensure you're maximizing your deduction and following all the necessary procedures for your donation.

How on Google Maps or Earth can you estimate # of units in a facility? 

Honestly, I think you're estimated expenses are a bit low.

I've seen estimates of $200 to $400 per square foot for SoCal with $700 sq ft for something higher end and building up a hill and but possibly higher for San Francisco Bay Area (lhigher labor costs, etc.).  

If it is indeed less on the other estimates present it to the PM, if they are the same price then you know the PM probably did the same digging to find the right company for the job.

I’ve spoken with a few agents who estimate it could generate anywhere from $150,000 to $300,000 in revenue, which is a big range.

Based on your estimated monthly "passive income" of $2,532 that you'd pay an investor, I'm estimating the investor would contribute around $380,000 to the acquisition, is this correct?