The Tax Cuts and Jobs Act of 2017, "TCJA" for short created a "passthrough deduction" of up to 20% for individuals, partnerships and S-corporations. One of the unanswered questions was "do rentals qualify for this treatment?"
The IRS, about 56 weeks late, published final regulations, and stated that rentals qualify if:
1) 250 hours per year on the property (or properties) - ask me about the election, shameless plug.
2) separate books and records are maintained for each property
3) taxpayer maintains records of 1) hours of all services 2) description of all services and 3) dates on which services are performed and 4) who performed the service