Lessons learned for the next tenant to include an early lease termination agreement to actually write out what the consequences will be for example one or two months  rent plus security deposit etc.  

Even if you self manage your underwriting should include this as it is effort and takes time.My thought on the ADU is before you proceed be sure that you understand the value that will be added by the ADU.  

Things are slowing down in most places, San Antonio included.

These boards are litterally 6 feet off the ground now, vs 9 feet the day they finished.

My current rent is $2300 at my apartment and I'm assuming the $2300-$2500 liability will be consistent in this property given the Purchase price, interest rate, and including rental income of $2000-$2200 of the other unit.

I spend MAYBE 2 hours a month including 1 hour on bookkeeping.

Other costs include $1,100 for taxes and insurance, $580 in HOA fees, and $200 for lawn care, totaling $1,880 per month.These rental properties are situated in desirable locations, and I have enjoyed consistent long-term tenancy with minimal turnover.

I have a new build project that I am in the middle of building with the intent to sell once finished.

That is still a 17.5% return(capex not included).  

.- Use cost segregation studies to expedite depreciation of your properties to offset large income gains.Entity Structure- Choose appropriate legal structure (LLC, partnership, or S corporation) with consideration for different tax implications.Tax Credits- Explore available credits, like energy-efficient or historic rehabilitation credits.Qualified Business Income (QBI) Deduction- Check eligibility for QBI deduction, providing up to a 20% deduction on qualified business income.Record Keeping- Keep accurate and organized records for tax compliance and audits.State and Local Taxes- Consider varying state and local tax implications, including property and income tax rates.Tax Planning- Engage in proactive tax planning, consulting with professionals for a comprehensive strategy.Tax Changes- Stay informed about changes in federal, state, and local tax laws affecting real estate investments.Remember to consult a real estate tax professional for personalized advice based on your specific situation.