You could create a new lease, after screening new person, with additional rents.

Simply create a "common expense" category, or several.

I don't think I've used a traditional bank lender (with the exception of credit lines) for over 10 years, because it feels great creating a win-win for you and your investors, and getting to skip the mountain of paperwork banks require.Good luck!

I usually work through all of those solutions creating financial models of each with me choosing one that best meets my strategy long term. 

@Danny Lambert if you download numbers on your Ipad, they have some good pre-created excel sheet.

Ok the scenario.Recently closed on an investment townhome with a nicely landscaped back patio.......a small but clean little trek deck and some nice pavers that created an attractive useable space.

To add to the great lists above, here are my choices:Commercial Real Estate Investing for Dummies by Peter Conti & Peter HarrisCommercial Real Estate Investing: A Creative Guide to Successfully Making Money by Dolf de RoosCommercial Real Estate for Beginners: The Basics of Commercial Real Estate Investing by Peter HarrisThe Perfect Investment: Create Enduring Wealth from the Historic Shift to Multifamily Housing by Paul MooreHow to Buy and Sell Apartment Buildings by Eugene E. 

All I can suggest is downloading Google Drive and Google Sheets onto your phone and creating a spreadsheet for each project. 

I usually order the apapraisal they day after we close on the cash purchase when the job just requires some minor cosmetic fixes.The key here is creating forced appreciation.

Don't count out a home with one larger room, that you can add an exterior entrance to (cut in a door where a window is at present) and create a studio with kitchenette.