Can these be tax write offs (home office, phone, car expenses, etc) even though I won't technically be making money for some time until everything is completely built and leased?

...perhaps the lease could state that if the tenant exceeds that threshold, then they're required to get a storage unit? 

This process can be very costly, requires zoning permission, in addition to all the items you listed.

We provided her with all of the required records.

I saw a lot of potential even though there was much deferred maintenance, poor mgt. and significant water damage in one unit requiring complete rehab.

Did she ever mention requiring any noise buffering for her unit due to her sensitivity? 

My doctor tells me that I have high cholesterol, clogged arteries, that I am overweight, and I need a bunch of expensive tests.

It depends on one's financial strength, the quality of the property, how many properties they own, and other factors.I like to start with one significant expense and three months of vacancy.

@Katelin UhinckIf the commute is an issue you could buy a property that cashflows to go toward personal expenses and still have the long term benefits of having renters pay off the mortgage.

Moving is expensive and regular, incremental rent increases at lease renewal are expected and necessary to keep up with your operating costs.