Valuation of Rental Property: Gross Rent Multipliers
Thursday, May 31st, 2007Buying rental property is an entirely different ball game than buying your home that you want to live in. When you’re looking for a roof over your head you’re most concerned with your individual needs, style, personality, and budget. For instance, if you are married and have a couple of kids (especially if you have at least one of each gender) you are probably looking for at least a 3-bedroom house but most likely a 4-bedroom house. If you’re young and single and don’t want to spend your free time mowing the lawn, you might buy a condo.
The rules change when you decide you want to invest in real estate rather than live in it. For the real estate investor, you’re biggest concerns are your cash flow and your return on investment. You want to invest your money and earn a return (the rent you charge your tenants as well as any property appreciation you can capture on the sale when you dispose of the property). You want the monthly cash flows that come from collecting rent.
Buying that rental property therefore means you have to evaluate whether or not you can make a reasonable rate of return on the property. This “reasonable rate of return” will be different for each investor and depends on the amount of time and energy that the investor wants to spend working on a property. For instance, one investor might be happy earning a 10% return on investment, so if the investor purchased a $100,000 duplex the investor would be happy earning at least $10,000 in annual rental income from the property. Another investor might be happy with only earning 8% or may want an even higher return (say 12%) before investing in the same duplex.
Since every investor has his or her own set of investing criteria, it’s important to look at what comparable rental properties sell to investors for in the same area as the property you’re considering buying. Likewise, it’s important to see what similar properties are renting for in the same area as where you are purchasing. If you need to make at least 10% return on your money in order to go forward with buying the property, you wouldn’t be happy to learn that similar properties only rent for $650 per month. That would only get you $7,800 of gross annual rental income, well below the $10,000 (or 10%) that you want in your $100,000 investment.
The concept we’re looking at here is called using rent multipliers, namely the above example was done using Gross Rent Multipliers (GRM). If you have every purchased a property, whether for yourself as owner-occupied or as an investment, you may have received a copy of an appraisal of the property’s value at the time of purchase. Many appraisers will include this gross rent method in a different form - they call it the Income Valuation or Income Approach on the appraisal. To calculate the GRM you take the sales price and divide by the monthly rental income (or you could also use the annual rental income). When you divide the sales price by the monthly rental income you should come up with a number that represents your GRM.
In using the monthly rental income this would be how many months it would take for you to recoup your investment (the sale price) assuming you earn that constant monthly rental income with no gaps (vacancies) and with no changes in rent price, hence ignoring inflation, etc. As a side note, if you used annual income instead of monthly, the GRM would tell you how many years it would take to earn back your investment. Since real estate is a longer-term investment, that is, one that is not as liquid as cash or stocks and bonds, I always prefer to use the annual GRM figure to know how many years I will need to hold the property to earn back my initial investment (the sale price). Of course, many people finance their investment properties so the sale price doesn’t truly represent their investment; rather, the down payment in the property and any amount they pay back to the lender represents the owner’s investment in this situation. But for simplicity sake we will ignore that for now as the important thing is to always be comparing apples to apples on various properties, which means we need to use the same metrics (i.e. sales price).
In our example, the $100,000 used to purchase the duplex earning $10,000 per year in rental income, the annual gross rent multiplier is $100,000 divided by $10,000 = 10.0 So in 10 years you will have made $100,000. The nice thing about this investment of course is that you earn that rental income and then if/when you decide to sell the property you get whatever your sale price is as proceeds. So, say we sell the property at the end of year 10. You have made $100,000 of rental income. If you sell it for $200,000 at the end of year 10 you doubled your investment from a basis standpoint, basis being what you invested to purchase the property. The rental income counts against your annual income reported to the IRS every year while the appreciation of the property is a long term capital gain in year 10.
Now you just have to decide what is an adequate gross rent multiplier for you. If you find a property that you like and the rents are too low, will you be able to increase them? Or perhaps the seller is simply asking too much for the sale price considering those rents are too low, will you be able to get the seller to come down low enough to make the GRM appropriate for the property? These are questions that only you, the buyer, can decide.
I have created a program in Excel that helps make these decisions easier. I will post a copy of this program (assuming technology cooperates with me and allows me to do so). If this website does not cooperate, I will post a blog saying I could not get it to upload and to please contact me and I will email you the program to calculate the GRMs for you. I know it’s easy to calculate the GRM but I have several other fun tools programmed in my Excel with the GRM so it’s quite the handy tool for investors. As always, I appreciate any feedback or comments…



