Where does the 50% rule come from?

[Matthew Mucker]

I know the "50% rule" is bandied about as gospel here in the forums, but haven't seen any actual, hard data that says that operating expenses tend to be ~50% of gross rent income. I'd like to verify this number is, in fact, accurate. (I believe that it probably is; but I owe it to myself to verify my assumptions, right?)

It would not only help me ensure that I'm using realistic numbers, I also think that it would be good data (ammunition?) to have when negotiating.

Can anyone provide links to studies that address operating expenses as a percentage of gross rent income? The little searching I've done hasn't yielded anything.

[Michael Rossi]

NogginBoink,

When I first started in the rental business, I read all the "guru" nonsense books. By the time I was in business a year, I had probably read 30-40 books and had seen many "gurus" talk. Most of the "gurus" never mention expenses because they are trying to upsell the "student" to a more expensive course, bootcamp, or training. Of the gurus that did mention expenses, several talked about taxes and insurance. Others talked about taxes, insurance, management and maintenance. At the one year point, I had about 10 rentals and had been very lucky. I hadn't had a single vacancy or any other irregular expense, such as evictions, court costs, damage done by tenants (in excess of the deposit), etc. I felt like a GENIUS! I thought that I had found a business that simply made money hand over fist!!!

Unfortunately, that was short lived. As my portfolio continued to grow, I had a vacancy. Then an eviction. Then damage done by a tenant. Then a drug bust. Etc, etc, etc. In other words, I began to experience the REALITY of the business, which was quite a bit different than the silly guru hype. I began to fell more like an IDIOT than a genius. Shouldn't I have known that tenants get evicted? Shouldn't I have known that there would be vacancies? Shouldn't I have known that tenants would damage my property? The answer was YES, I should have known, but instead I had chosen to be ignorant and believe the nonsense that I read in the dozens of guru nonsense books!!!

I knew that there had to be an answer out there. I started looking at all the apartment and rental housing data I could find. This data included hundreds of thousands of rental units throughout the United States. What I found out is that throughout the United States, operating expenses run 45% to 50% of the gross rents. That's where my "50% Rule" came from.

The only thing that saved me from joining the majority of other newbies that fail is that I'm extremely competitive. After I bought one of my first houses, I heard of another investor that bought a house for the unbelievable price of $20,000. I knew that if that investor could do it, so could I. My competitive fangs came out and I was on the search for properties at a HUGE DISCOUNT. So, even though I didn't understand the operating expense issues at this early point, my competitiveness saved the day.

I've been preaching the "50% Rule" every since, mainly because I was so frustrated that the gurus were either lying about the expenses or didn't understand them. That's how the "50% Rule" came to be.

Mike