I would absolutely talk to your landlord, here is the city it's customary for both agents to be present at all showings.  

Does Airbnb already includes and pays the Austin hotel city tax of 11% or do they just include the state tax of 6%?

What city is your property in?  

Also, our property is 10x the size of most in the city at 1.75 acres.

Or better, buy a property that is not subject to an HOA.Also, if you are leasing for 6 months or less, you will be subject to the 6% Florida short term rental tax.You may also have city and county additional taxes, business tax receipt, and mandatory inspections for short term rental depending on the jurisdiction where your property is located.

I've never heard of any city grants that help out Section 8 investors.

And the market conditions are unwelcoming (physically distressed inventory, difficulties with Ogden City, and poor tenant pool). 

So, the total parcel should be worth $750,000 - $900,000 before building the new duplexes.My local housing market: In a small city of 33,000 growing at 1% a year, constrained by a housing shortage.

Hello Elena, If you go to NARPM.org, you will be able to search residential property management's by city.

Also, Fresno, CA is in the top 10% of US housing markets for appreciation, at ~9% annually over past 10 years and expected to continue given the growth we have seen here, proximity to big cities in CA, cost of living relative to the big cities, high-speed rail to LA stopping here when complete, etc.