About a month ago I had a contractor replace a roof that got damaged from a storm but when they had the shingles off another storm blew through overnight and blew the tarp off and a lot of water got in the house.

Many Martis buyers are interested in form over function and the builds can reflect that, with more $ spent on adding square footage and finishes than the details that aren't seen (insulation, ventilation, water management, etc). 

My client i funded and partnered with then went on to tell me its Clay and Clay in that area is in big demand to be used to line ponds etc as the basic soil in the area is very sandy and wont hold water..

I do not have a sheet but I typically budget $150 for lawn, $150 for pool if applicable, $100 for cable, $100 for water, $300 a month for electric (depending on property size and your local utility costs), $50 for pest control, and another $200 per month in misc. 

Additionally, a larger property like this is valued based on the actual cash flow, not sales comps, so you have the ability to force appreciation faster with efficient management.Adding the a 5-10 unit may also increase the amount of time you spend getting you closer to the 'Real Estate Professional' status for tax purposes opening up room for offsetting some W-2 income on taxes.  

We've done something similar by offering local coffee, tea, snack baskets, bottled water, local pastries, and seasonal flavors (pumpkin spice, peppermint, gingerbread, etc.) which have been a big hit with much less risk involved. 

The only real differentiation can be in operations, and operational efficiencies.  

We bought Ocean Walk Shoppes out of bankruptcy cash, no lender wanted to to play here cost efficiently, about three years ago.

And being a beast of focus, attacking that 1-thing, will assure your maximum efficiency. 

I’ll do something different to find the same benefits even if its harder than just drinking some garbage water.