I not seen the expense for the filters on the owners statment yet, so I need to investigate why there is not an offsetting cost to the revenue or if the revenue is being collected and nothing is being done.

If you want your LLC to be a bona fide LLC, revenue must enter and expenses paid out of the business account.

I was thinking similarly to a car dealership with an auto shop where a lot of revenue comes from the service too but instead other developers and what not use my construction and my architects etc.

Running jobs from the office these days encourages me to be productive on all fronts of the business.

I am lucky enough to work in the office for three such investors.  

If there's potential that they'll work with you, then a trip to the local building permit office would be in order.  

Cap rate = NOI/Purchase price Therefore,  if you can increase your NOI by either decreasing expenses or increasing revenue, your cap rate will go up. 

You'll know very quickly if they have an INVESTOR-friendly Loan Officer you can talk with.ie.

I'm curious if any one has used the Every Door Direct Mail Service through the United States Post office and what kind of response rate your received?  

Sold commercial office.