For example, it's difficult to appease a situation if 1 tenant claims they're using less electric/gas than another. 

I carried double the cost on Gas and Electricity to be safe. ==== Projected Income ====**Off Season**-$4,000/Month Rent Period: September - May (7 Months) Projected Income: $28,000**Summer 1**-$8,000/Week Rent Period: June (4 Weeks)Projected Income: $32,000**Summer 2**-$8,500/WeekRent Period: July-September (12 Weeks) Projected Income: $102,000**Optional** (Basement Apartment)-$2,000/Month -Rent Period: Year Round Projected Income: $24,000TOTAL PROJECTED INCOME: $186,000 ==== Operating Cost ====-Mortgage: $84,000 ($7,000/Month) -Utilities: $36,200Gas $6,000 ($500/Month) Electricity $6,000 ($500/Month) Internet $2,400 ($200/Month) Garbage $5,000 (Estimate) Pool $4,000 ($250/Week)Landscaping: $4,000 -Mowing: $2,400 ($150/Week)  -Clean Ups: $1,600 (Spring & Fall)-Weekly Turnovers: $8,800 ($550/Week)==== Legal Cost ====Summer Rental Fee: $20,100 (15% of $134K)Sandwich Rental Tax: $6,855 (15% of $45,700) NET PROFFIT: $38,845.00

Electric is metered separately from the utility. 

Job included inside work of leveling floors, installing flooring, paint walls, kitchen cabinets, etc in both units, as well as lay a new driveway, fence the back yard, provide attic fans, and install electric to the crawlspace to add lights and a sump pump.

Estimated cost for remaining changes (all new electric, drywall, tile, fixtures, cabinets, roof, doors, windows, heat pump, some siding, and fencing.

New Roof, New Windows, Paint interior/Exterior, New Appliances, New Garage Door, New Fascia, New Fixtures (Bathroom and Ceiling fans), Electric Service Upgrade, 1204 Sqft, built 1960.

Purchase price: $630,000 Cash invested: $120,000 Completely gutted this property, brand new electrical, furnace, propane, finished basement to create separate unit.New garage with rental unit.

My big bold move was to rent them at $150 month with tenants paying for heat and electric. 

My hunch is that's $85K for the garage itself before plans, permits, engineering, sewer line, electrical panel, etc. 

A crime in a low crime area may be media worthy but the same crime in a high crime area may be just another day.in my neighborhood (poway), kids playing doorbell ditch or riding 3 on an electric bike warrants posting on social media and dozens of comments (no exaggeration).