He feels its better to have 1 roof, 1 heating system and 1 landscape and a whole bunch of zeros. 

Many of the log cabins come pre-fitted with electric/gas heating and modern fittings to retain heat.The reason I want to invest in log cabins is because they are cheaper than single/multi-family houses, and there are many log cabins situated within 5 Star resorts for as little as £50,000 ($70908.50).I am also a first time investor and it will take a few month before I feel confident enough to invest.Do you think that investing in log cabins would be a bad investment? 

Number may be closer to %30   not the %34-%39 shown at the bottom6 plex BUILDING PERMITS   (  $97,200.00  single $16,200.00 UTILITIES $0.00 $500.00 EXCAVATION $24,000.00 $4,000.00 GRAVEL $2,500.00 $416.67 CONCRETE PUMP $1,750.00 $250.00 CONCRETE $18,000.00 $3,000.00 FOUNDATION/CONCRETE-LABOR $9,000.00 $1,500.00 CONCRETE CUTTING $750.00 $125.00 SEWER CONCRETE FLAT WORK $12,000.00 $2,000.00 FRAMING LABOR $21,000.00 $4,947.00 ROOF TRUSSES $14,300.00 $1,831.67 BUILDING MATERIALS $70,000.00 $19,128.40 WINDOWS & SKYLIGHTS $8,500.00 $1,419.38 EXTERIOR DOORS $5,400.00 $1,050.00 ROOF COVER $16,800.00 $2,800.00 GAS FIREPLACE $6,000.00 SIDING LABOR $13,115.00 $2,185.00 GARAGE DOOR $4,914.00 $819.00 GUTTERS $2,400.00 $525.00 PLUMBING $30,000.00 $7,000.00 HEATING $30,000.00 $4,800.00 AIR CONDITIONING $0.00 NEST THERMOSTAT $325.00 GAS BBQ GAS DRYER ELECTRICAL $21,000.00 $4,000.00 MASONRY $3,000.00 $500.00 INSULATION $12,000.00 $2,735.00 SHEET ROCK $21,000.00 $7,100.00 SHEET ROCK GYP BOARD $750.00 INTERIOR TRIM $16,500.00 $2,500.00 TRIM LABOR $12,000.00 $2,500.00 SECURITY SYSTEM $900.00 FINISH HARDWARE $2,400.00 $350.00 UNDERLAY LABOR $1,500.00 $250.00 CABINETS $24,000.00 $4,854.40 COUNTERTOPS $11,100.00 $1,850.00 MANTLE $1,200.00 TILE $9,000.00 $1,597.80 VINYL AND FORMICA $3,000.00 $207.43 HARDWOOD FLOORS $6,600.00 $1,138.10 CARPET $13,000.00 $2,110.10 PAINTING $25,200.00 $5,359.25 WATERPROOF DECK $0.00 $0.00 KITCHEN APPLIANCES $8,400.00 $1,400.00 LIGHTS $3,000.00 $500.00 SHOWER DOOR &MIRRORS $3,000.00 $790.00 FINAL CLEANING $2,400.00 $400.00 PICK UP.

And, how is the building heated?

My criteria and general thoughts (this is flexible and fluid) - 1) 2% rule according to the BP book.

Has that baseboard heating unit been recalled?  

Is it being used to radiate heat from the sun into the apartments?

What kind of heat source does the unit have? 

Is he at the upper end tenant quality wise as far as what can be expected for the area?  

Roofs, windows and central water heating have all been replaced within 5 years, but the central gas fired boiler may be the original.