I work as a network Engineer, and i have a decent income but i don't have enough employment history in the united state(I was in Dominican Republic since i was a teenager)  so i don't get a approve. 

I was feeling like one of those people so I figured introducing myself here would be a good first step.I'm a software engineer living in San Francisco and I am thinking of going with the buy and hold strategy focusing on building some cash flow.

I know this is a complicated building mechanically, however I have no clue what to expect in a yearly contract for a management company. 310,000 sq ft. (1) Property Manager(1) chief engineer(1) Lead Engineer(1) General Maintenance EngineerAll vendors and contracts are to be handled by management company.

That usually requires the owner to apply for a zoning change.For that process, you'll need some engineering accomplished, site plan, water retention, concentration of land usage, utility plans, street plans, etc.How many acres are there?

You can have a 7,500 sq.ft. stunning mansion that backs up to a burned our shell of a house. 

Second, what would I want to do with the property if the building completely burned down.

You will need a structural and geotechnical engineer to provide an inspection and recommendations.

They will probably tell you that the header needs to be designed by a structural engineer and design details submitted for review. 

Having a soil engineer do Level 2 study would be a good start if that hasn't been done already.

The government has already hinted at trying to tax various other tax-havens over the past few years, and I have little doubt that at the rate we're burning through cash Congress of the future will say "yeah, we made a promise, but so sorry... gonna tax you anyways."