Depending on laundry/parking/vending machine situation, and your leasing policy, at most, I would underwrite around $20 per resident per month and hit that figure with your vacancy & collection loss factor.

You can add 'washer' etc. whether it is vending machine or dryer this will tell you more than you ever wanted to know! 

You could use the rest of the space for pet type things (pet vending machine, etc...). 

. - Get some vending machines for the covered area by the shed (there's a small covered seating area already there).

Additional income opportunities like coin laundry, vending machines, storage, or other amenities that may attract tenants willing to pay more and stay longer.

One of the value add ideas I am tossing around in my head is Vending Machine's and or an ATM being placed in the property. 

Common areas can be enclosed or open space and are in turn driven by determining the density of NRA, parking requirements along with non-discretionary common areas (like internal or external circulation) and discretionary common areas such as a gym, laundry/vending machines and swimming pool/spa.

Here are some of the numbers I am using :  Monthly Operating Income Scenario A Number of Units 4 Average Monthly Rent per Unit 1,100.00 Total Rental Income 4,400.00 % Vacancy and Credit Losses 5.00% Total Vacancy Loss 220.00 Other Monthly Income (laundry, vending, parking, etc.)

The Coke Can Multiplier seems to suggest the value of the hotel property = Number of rooms * $100,000 * Price of can of coke at on-site vending machine.I happen to be looking to buy a hotel with these numbers:# of rooms = 200;Median nightly rent (area specific median) = $109Number of days per year = 365;Occupancy rate (national average)=65%Revenue per year = 200 * 109 * 365 * .65 = $5,172,050Revenue per door = $5,172,050/200 = $25,860Estimated net profit = $478,932Hotel/Lodging industry data (see table below)median net profit margin = 9.26% median price-to-sales=2.13median price-to-earnings=29.59So if the Coke Can Multiplier were correct, it appears the hotel is worth (based on the price of coke at a nearby commercial facility): 200 rooms * $100,000 * $1 or $20,000,000.

So I actually have about 30 different searches set up, from real estate to vending routes to ATMs to shop tools I'd be interested in buying.