In my market, I only have one vendor qualified for appliance warranty work, and the warranty companies paid him half his standard fee for each service call. 

There are not many ADU comps in my SoCal area YET.

Unless there is an emergency situation, take a lot of photos and call your insurance agent before doing any repairs.

Quote from @Aaron Wolman: I would call the companies (gas/water/electric) to get estimates, or an estimator out there.

So, when investing in areas they don’t really know, investors should research the different property Class submarkets.

Call others vicious troll for critical reviews.4. 

Uh-huh, yeah we call that fantasy land.

Happy to share the pros and cons of the various communities in both counties.Orange County (Orlando) places severe restrictions on most vacation rentals, with a few exceptions - so you’ll want to be careful there.

As @Troy Gandee mentioned use the tax estimator on the County website or call the assessor.

Even if you handle management yourself, budget at least 10% for property management costs so you’re already prepared to scale.