I'm working on acquiring more rentals in Delaware right now...and maye eventually need to make that transition. 

And if an LLC, does that need to be registered in the state of investment, or just somewhere with low taxes (the classic Delaware filing)? 

Look at the Macau Floating Casino. https://www.tripadvisor.com/Attraction_Review-g664...When I was growing up in the San Francisco Bay Area the hippies started building house boats across the Golden Gate Bridge in Sausalito.http://www.sfgate.com/homeandgarden/article/Sausal...I have some small houses that I built in the State of Rio de Janeiro, Brazil and a small farm where I wanted to retire.

@Danet De Leon Touche, and well explained.  

Well, uhhm, smaller and older houses doesn't really help, they have a smaller foundation, meaning you have to have your structure built around it, or demo the whole thing, or have portions of it non-usable, in all cases, it is simply a tear down, I don't see how it is "de-construction", I still don't get the difference, by just mere words of it, it is a reverse of construction, which is demolition.

welcome @Andrew Jervisand I know Eleena de L.is in Philly and looking to buy some multifamily properties. 

I typically don't advocate paying utilities but in the Philadelphia/Delaware county market, most landlords are responsible for water. 

They "de-listed" one of my units for 7 days because a guests gave me a 2 star review.

After you place it in service, some of the work can be fully expenses under de minimis if it is below 2500 and you might be able to fully deduct new appliance under 100% bonus depreciation with new tax reform. 

That being said, to me it sounds like the initial $670 fee you were charged was the " Initial Deposit" Here in PR ( and many places in the states as well) lenders charge a fee once you are under contract on a property to cover the initial expenses such as the Appraisal, Plot Plan ( in PR these are mini-surveys on single and multi-family homes), and the Estudio de Titulo ( title search).