I have an opportunity to purchase a warehouse that looks pretty strong based on the numbers and rent roll I've been given by the current owner. I have a list of the improvements and conditions of the property as well....

We are looking for somebody specific with making converting an apartment in a multifamily complex from a storage unit to a rentable unit.  

We could get an extra $1k monthly without blinking, and there are 3 other ways to add solid income on the property after the 1k (boat storage is super desirable, coin op laundry as tenants drive 15 minutes out of town for laundry currently, small RV park or storage).

If you have others ways to boost monthly income (pet fee, garage fee, storage area fee, etc) it can reduce the other costs you mentioned.

Income Evaluation No of Units Unit Rate Income       2 Bedroom Unit A 1                 650.00                                    650.00           2 Bedroom Unit A 1                 650.00                                    650.00 2 Bedroom Units A 1                 650.00                                    650.00 2 Bedroom Units B 1                 650.00                                    650.00 2 Bedroom Units 1                          -                                               -   3 Bedroom Units B 0                          -                                               -   Garage Units 0                          -                                               -                  -   Storage Units 0                          -                                               -   Laundry Units 0                          -                                               -   Comm Units 0                          -                                               -   Comm Units 0                          -                                               -   Comm Units 0                          -                                               -   Total Monthly Income 5                                    2,600.00 Total Annual Gross                              31,200.00 Total Annual Cost / EBIDTA                                9,911.86 Net Cash Flow (Annual)                              21,288.14 Net ROI 42.39% Monthly Cost of Operation By Landlord By Tenent Monthly Annually Monthly Taxes x                                       137.50             1,650.00   (From Historical Data) Montly Space Rent (MHP)                                                -                            -   N/A Monthly Insurance x                                       100.00             1,200.00 Calc'd Monthly HOA                                                -                            -   Posted Monthly Water/Sewer   X                                       320.00             3,840.00 Estimated Monthly Garbage X                                       160.00             1,920.00 Estimated Monthly Electrical X                                                -                            -   Tennant Monthly Heat/Gaas   X                                                -                            -   Tennant Monthly Other Utes x                                                -                            -   N/A Monthly Yard Maint x                                         20.00                 240.00 Estimated Monthly Maint - Op Ex x                                       260.00             3,120.00 Calc'd - 10% Cap Ex x                                       260.00             3,120.00 Calc'd - 10% Monthly Vacancy x                                       182.00             2,184.00 Calc'd - 7% Screening/Tennant Management x                                         20.00                 240.00 Estimated Monthly Management x                                                -                            -   At Risk - Self Manage MONTHLY OP EXP                                   1,459.50 Total Annual Expenses                                 17,514.00 Total annual Debt Service                                   8,452.36 Net Operating Income NOI                                 13,686.00   Net Income                                       5,233.64 ROI % 10.42% Low/Average CAP Rate (Net Income/Purchase) 2.92% Extremely Low  Cash Flow per Door                                       109.03 Very Low  Tax Assessment  Estimated Expenses - 50% Rule                                       159.50 Conservative Banked Amount - CAP Ex, Repairs, Vacancy                                   8,424.00

Eventually I’d love to get in to apartments, mobile homes or even storage unit facilities but I have to learn to flip over, before I can crawl, before I can walk.

It's difficult here to differentiate between giving good advice and advocating mentorship programs, workshops or courses to advance your one on one activity and thus speed up the learning curve and timeline to reaching and stretching your goals.I personally have gone the journey from DIY wholesaling, flipping, seller-financing SFR and international Short Term Vacation Rental management and then arrived at commercial multifamily and self-storage real estate syndication due to the fact that it offers the maximum scalability, economy of numbers and at some point truly leads to passive, residual income and thus to time freedom and choice.Send me a colleague request to kick the tires, set up a call and get a few burning questions answered in real time, one on one. 

I have a question regarding how to implement extra monthly charges for the use of a parking spot/garage, or storage or other additional items in Los Angeles.

Back up those emails onto a physical device.

Could I use it as storage or something of that nature to get around it being a commercial unit?