Best of luck in your journey - you're in for a wild (but very fulfilling) ride! 

My family loves the house and we wild love to live there, so we will see what happens.

They are all very different, replacement parts can be a headache, rust is an issue, and values swing wildly up and down depending on the type of owner you're doing business with.From a buy and hold perspective, houseboats usually don't make a lot of sense, although there are some exceptions to the rule, just not in Portland.

For example, closing costs, property taxes, property management fees and insurance costs all vary wildly between Spain, Ireland and the US.

The big wild card from a cost perspective is site work, not construction of the building.4.

I know residential is like the wild west and you run across a bunch of buyers and agents that have no clue what they are doing.

These numbers can vary wildly.

- I realize this is kinda a wild card for anyone to spend much time on.  

Note though, that the data can be wildly out of date, and you have to look carefully at the "comps" being used, since some of them are likely in other areas of town, and may not be representative of rates in the area you're looking to buy.  

It seems that with how slowly land seems to sell, there wouldn't be any of the "wild west hunt" for good investment property and instead could be carefully calculated for lowest construction cost, highest durability/energy efficiency, etc. making sure it is a good solid asset with very low maintenance.