What are my best options for leveling the garage floor so I have a flat surface to begin the interior build out on?

Engage professionals to inspect major components such as the roof, plumbing (including sewer lines), foundation, drainage, electrical systems, HVAC, chillers, boilers, termites, exterior walls, balconies, stairs, rails, and concrete.

Quote from @Jaron Walling: @Jordan Fujan I agree with your spreadsheet over the BP calculator.

The prices, on the surface, but have to understand the total carrying costs are higher then most other states.

If it is/was an automotive repair business I'd be concerned about underground storage tanks, surface contamination, etc. 

The land represents ~1% of the purchaseOn the contrary - if you purchase a $2 MM shack in manhattan on a postage stamp lot, the land could represent 99%Lever 2 - % of the property with a shorter useful life.Not all parts of a piece of real estate are depreciated at the same speed.Certain personal property assets have SHORTER lifespans in the eyes of the IRS vs the standard 27.5/39 year livesProperties with tons of this often have:- Over-developed land sites (hardscaping, pools, retaining walls)- Fancy Fixtures- Fancy Furniture (STRs!)

Then the walls for the living room and bedroom rooms fold out.

Well, I'd bid the job, they'd buy the paint, only they'd show up with the cheapest Glidden product on the shelf that I'd have to put 3 coats onto a wall to cover.

One, almost half of the front wall of the house and the garage was eaten away by termites..... 

Walls come down, kitchens come out, and bathrooms get a major facelift.