Breaking that up typically mean separate electric meters, disconnects, panel for each unit as well as a common meter for landscape lights, walkway lights, fire and smoke alarms, common laundry, pumps etc...in addition to the rewiring that is necessary to break it up on the inside.  

There was tremendous smoke damage from years of smoking in the unit.

At the end of the year when you do your taxes your interest will come back into play but is calculated outside of the OE.A couple of more items to take into account are:LandscapingTrash RemovalTermite and Pest ControlFire and Safety Inspections (Fire Extinguishers and Smoke Detectors)Supplies (Office and Maintenance)Never assume a vacancy rate.

There's plenty of intelligence in the world, but the courage to do things differently is in short supply." ~ Marilyn vos Savant 

Go talk to your builder's supply company.  

The landlord is now required to supply birthday cakes (not vanilla) for the tenants.  

The lower the inventory %, the demand outpaces supply and apprecation will take place.

This is also the "rate" you get while you are saving for your down payment.Mortgage requires 25% down, 20 year note, 8.47% interest (avg for last 30 years)Goal is $100/door cash flow to start so CAP rate is 10.2%S&P 500 Compounded Annual Growth Rate is 11.4% (avg for last 30 years) and you don't pay any fees.You get a 75% match of your savings in the 401(k)All rental cash flow is plowed back into the business (just like reinvesting the dividends/gains received in the 401(k)) to make this an apples-to-apples comparison.After 10 years:The 401(k) would supply you with $843 of monthly incomeRentals only give you $371 of monthly incomeAfter 20 years:The 401(k) would supply you with $3,886 of monthly incomeRentals supply you with $4,209 of monthly incomeAfter 30 years:The 401(k) would supply you with $13,963 of monthly incomeRentals supply you with $34,426 of monthly incomeWhat's really cool is the Net Worth of the investor.

but not to look for info to improve my own biz, but just to surf through the various areas I feel well qualified to answer questions on, often from "newbies" who may need just a little pointing in the right direction or other times, unfortunately may need to be given the tough to give answer that they need to reconsider their entire plan, ideas, etc as it may very likely result in money I assume they've worked hard for, going away like a puff of smoke!

An extreme lack of qualified buyers (and those that were qualified expected EVERYTHING to be perfect) combined with a large inventory of flip-level homes lead to a severe imbalance in supply and demand.