I had a trial subscription with DataTree a couple months ago, but found their data grossly inaccurate or outdated. 

And that prior address was outdated. 

When friends visit you point out your outdated kitchen and tell them "that kitchen makes me money...a lot of money".

I'm looking at a duplex in Marysville and the agent says it should rent for $2000/month (2 bed, 1 bat, 1100 sqft, 2 stories, clean and a little outdated but I would be updating the property).

That is certainly possible with many investors, but keep in mind that many of these listings have photos and descriptions, plus keep in mind the target property has old and outdated kitchens, baths, etc.

An accountant is now telling me that that info is a bit outdated.  

So, going by rental numbers that are that old and outdated, the offer price 26% is coming up with is seriously low.  

All 4 were dirty, outdated, and way over market value for the area.

If you are trying to use a primary residence for a hotel, the city would likely want it registered for that use, they may want to inspect it to ensure  ensure its up to code, you may have to you obtain the necessary license, pay necessary fees etc... this isn't some grand new scheme targeted at STR operators, it applies to just about every other business, restaurants, bars, convenient stores, night clubs etc...Mike, all I am saying is that in our case, the city asked us to sue them as an excuse to review an outdated city STR ordinance. 

My unit looks old & outdated.