Regardless, the Board adopted regulations that all but eliminated our options to rent the place, including a proposed $250 fee per rental for "administrative costs" and requirements that renters sign an extensive agreement about what they could and could not do on the condo common grounds. 

For estates in excess of $100k they are required to go thru the full probate "Decedent Estate Administration" process. 

It sounds like it would fit but I will always defer to your 1031 administrator.

I apologize for not giving some of the details: I'm 70-1/2, have owned the properties (no mortgages) for 6 years in the SDIRA, there are current appraisals in place with the SDIRA administrator, and I don't have a CPA yet (that's on my "to do" list ;^)  ).

But if you take a look at the relevant parts, it says something along the lines of "the landlord may charge an administrative fee" of some amount (1% a year I believe).

In my case, I grew up in a poor area of the country (declared to be an economic disaster zone by the Johnson Administration in the 1960s [today, it's part of the Rust Belt]).

This is a post-closing penalty charged by the Escrow Administrator to extend the renovation period beyond the maximum renovation term of 180 days in the event renovation is not completed within agreed upon terms.

I spent 30+ years in Washington State and have had some involvement with DSHS (although not with housing).My advice to you: 1) Everything the state does takes three times as long as it should and three times as much paperwork as it should.  2)  You will probably have to attend some indoctrination -- I mean class -- either on-line or in person.  3) Your tenant will be endlessly "educated" on their rights and will have free legal representation. 4 ) Just when you think you know the rules and try to play by them, an administrator will come up with an "ETR" -- Exception to Rule. 

I already have an LLC from a previous consulting business, though it's currently "administratively resolved", a simple fix by filing the state fees.

Some will charge a percentage each month but also a start-up fee, a leasing fee or lease renewal fee each year, administrative fees, maintenance fees, etc.