Is it more or less reliable than going to an agent to get access to the mls?

With an additional cost of only 1K per month you would be crazy not to access that money immediately to reinvest.Equity in a income property is where cash goes to die.

It is illegal for a tenant to refuse access.

I do see the tax free benefits of the Roth 401K, my issue with doing any real estate inside of a government retirement plan is that I cannot access my own funds without a penalty before I'm 59. 

I'm trying to use what I recall from database management, to manage my units in Microsoft Access.

Yes, flat roofs should have an access to the "attic" space.

Craig,It appears you can get online access in Multnomah County, but an account setup fee might be required to see the scanned doc that are public record.https://multco.us/recording/research-online

A broker has access to hundreds of lenders.

In 24 months I will need to have access to the cash to invest. 

@Patrice Boenzi As Mike said, don’t disqualify the internal HVAC components as blowing out the smell, especially if they are cat accessible