The two most significant operating costs for investors are property taxes and insurance.

Essentially this delays taxes. 

Here are a few I can think of:Make sure you have right of entry and inspections No other occupantsNo pets unless discussedmust keep on utilities at all timesmust change A/c filter monthly unless you are doing soMake sure you have a late fee policyNo additions or alterations to the propertyMust maintain renters insurance

Basically an informal audit of ones portfolio.This could be as simple as creating a few benchmarks (specific ratio of expenses, total PM fee ratios, vacancy rates and duration,etc)As much as one could assume they have a well oiled portfolio, an outside investor could find areas of improvement.

API connected, if you only have Airbnb guests for a month and Airbnb supposedly paying the state taxes, when you submit your monthly State tax form, do you enter ZERO in the transient rental box?

You will then be out attorneys fees, TI, and leasing commissions.

More quickly than the hassle of selling my property and then incurring enormous fees like recaputre, renovations, agent fees, federal and state taxes.The money is there in either a cash investment or index fund/stock market.

Although, I think it would drive up the cleaning fees and, in turn, the airbnb rates to have cleaning/PM companies that establish and maintain a higher standard of work.

Tenants pay for utilities, so for expenses I have vacancy 8% ($198), taxes $395, insurance $85, maintenance 3% ($74), CapX 5% ($124). 

You must buy in the same “tax name” as you sell  if you’re married filing jointly I’m pretty sure you can’t do a 1031 on just “your half”Ps.