Who's going to go to all the bother of building an ADU unless it at least covers your substantial taxes, insurance, and utilities on your main house? 

We have set a goal of getting 4 properties in the first 4 years after graduation by utilizing low money down options, living in the property for 1 year and moving on to the next.

Find out who pays which utilities (landlord or tenant), etc.Make sense? 

On a larger park, I would recommend a formal cost segregation study for this, but an 8 unit park is too small for that to make sense, so you can also assign a value in the bill of sale to include:Landscaping shrubbery & trees: 35 mature trees approx. 20’ tall each, pool equipment, roads: XXX square yards of asphalt paving, sidewalk and curbing, electrical pedestals, concrete pads, underground utilities for electric, sewer or septic, pool, clubhouse, etc. 

Utilities - is that just for common area heat?

In my area the Landlord is responsible the these Utilities, how do i Determined these rents for utilities the those until.

Can I utilize the business bank account or would it be easier to have the funds separated personally since the income is technically not under the LLC?

Yearly expenses (utilities/repairs) $6k.

The bright side, is my company will cover all rent and utilities while I'm traveling, so that frees up a lot of money for me each year.

Here are some examples:Schematic Design DevelopmentDevelopment of energy-efficient features that are uniqueDevelopment of elevated drawings for planningDevelopment of plans that meet specific/unique load requirementsUse of Alternative materials that meet certain requirements or improve design.Value engineeringDesign that is sustainableEnvironment designNew material testingEnvironmental impact studiesDetermination of substitute HVAC systems or improvements to the systemsDetermining alternative structural designDeveloping or improving lightingHave you utilized any R&D tax credits?