There should be permit records with a site plan showing the location of the septic tank as well as the rest of the system.

I have interior damage from water getting in. 2.

Some examples of tasks I'm looking to get done over the next few months:Install a new shelf and hanging rod in the walk-in closetPressure spray/clean some of the exterior stuccoChange the flapper valves in the toiletsFlush the water heaterAssemble a basic outdoor storage shedInstall new shower heads and a new kitchen sink faucetChange out the garbage disposalThank you in advance for any recommendations on people whom you trust.

Basement including electric service panel, heating system, water heater, meters for all utilities etc. 

Though I haven't converted any of our units into short term rentals as of yet, we tested the waters two years ago by renting out our own unit while travelling abroad and it was fully booked in no time . 

Too much rock, too little water, too much heat in the summer, winters are nice.

In all I've spend about $20k+ on renovations (New Roof, BR gut and remodel, furniture, driveway water softener, flooring, lakeside deck and landscaping.

Are there any deferred maintenance items that need to be addressed (i.e. air conditioning, hot water heater, etc.)?

You most likely will be responsible for water/sewer and you might, I say might be responsible for providing a stove/refirgerator although this varies by area. 

They'll also then be able to reflect these strategies on your return.If you are going to be doing lots of deals, consider a CPA that understands setting up systems within your business that can help you make better decisions and make more money (weekly profitability reports by property, weekly project reports on rehabs, etc.)And finally- if you are planning on doing your own taxes, don't do it the first year.