A few of those cautions include the investigation of existing encumbrances on the ground (zoning requirements, existing or proposed easements and assessments, encroachments, etc.), existing site conditions (high ground water, site topography, existing soil types and soil environmental concerns, etc.), the location, depth, and capacity of utilities to service the site - including public utilities (sanitary, storm and water services), franchised utilities (power, gas, cable), capacity of the local streets to accommodate additional traffic from your development...Be sure to find out if there are any specific local ordinances you need to satisfy (possible tree & wetland surveys, together with any necessary tree & landscape or wetland mitigation plans) and whether there are any concerns from municipal departments (e.g. hydrant locations from the fire department, storm inlet and retention requirements, as well as asphalt / concrete road requirements from the engineer), entrance requirements from the road commission (left turn and passing lanes at the site entrance), etc.Once you get past all this you can finally prepare a preliminary site plan and enter the political arena to get preliminary site plan approval, and to address any concessions the board and neighbors want from you to overcome their objections to your development.

So after 1.5 years of searching, putting in offers, losing deals after inspections, yesterday I finally closed on my first investment property.I put together a document of all the lessons I learned that I did not know prior, despite countless hours of investigation on my end. 

Talk with her previous landlords on how is she as a tenant and investigate as to why she would have change apartments. 

While it’s typically aimed at larger developments, it's worth investigating for significant projects.4.

@Ricardo Polanco you might want to investigate the Class of tenants the property is likely to attract.There's a BIG difference between dealing with Class A tenants vs Class C or D tenants!

If there are other implications beyond what you're saying here, and absolutely have to get in touch and/or get money (security deposits, etc.)...there's always private investigators.

I'd have to investigate the prices further tbh.

If you don't have the intention to actually occupy the home in Washington as your primary residence for the majority of the year, then that is occupancy fraud (investigated by the FBI), which would likely include some jail time if you are found guilty of making misrepresentations.

If they do get turned in they do get investigated and if they are advertising properties they dont own they will get a cease and desist and a fine.. and further violations then become serious.

This reads like fraud...Mortgage fraud is investigated by the FBI and punishable by up to 30 years in prison and/or a fine of $1,000,000 --- (link)Bryan, there are perfectly legal solutions to your problem, call anytime.