The Truth About "Comps": Why the Right Data is Your Best Friend in Real Estate

Have you ever talked to a neighbor who was selling their house and heard them say, “Well, we just looked at the comps in the area?” It sounds simple enough. They find a few homes that are similar to theirs, check the sale prices, and boom, they have a number for their own house.

It's an incredibly common way to think about home value, but what most people don't realize is that the term "comps" (short for comparable sales) is a lot more complicated than it sounds. Simply finding a house with three bedrooms and two bathrooms that sold down the street is not enough. You see, an inaccurate valuation can cost you money, whether you are trying to sell, refinance, or even appeal your property taxes. The key to success lies in understanding what truly makes a property a comp.

So, let's look at the data. A real estate professional doesn't just look at bedrooms and bathrooms. They follow a specific set of rules to make sure the comparison is fair and accurate.

First, there's location. A house on a busy street isn't a comp for a quiet cul-de-sac home, even if they're in the same neighborhood. Then comes time. The real estate market can change quickly, so the most reliable comps are homes that sold within the last three to six months. Anything older than that is likely outdated.

Next, a good comp has to be truly comparable in size. This includes lot size and square footage, not just the number of rooms. A 2,500 square-foot house is not a good comp for a 1,500 square-foot house, even with the same bedroom count. The total usable space makes a huge difference in value.

Finally, we get to the condition and features. Did the other house just get a brand-new roof and kitchen? That beautiful master bath renovation you just finished has a lot of value. If the other house is an older fixer-upper, it's not a true comp for your renovated home. A good analysis would adjust for these differences to get a more accurate picture.

Finding all of this data can be a real headache. The average homeowner would have to spend hours, if not days, digging through public records and listings to find the right data points to build a solid argument. But that's where having access to the right data can change everything. Imagine being able to see a comprehensive, data-rich analysis of your property, instantly. The tools you use to find the right comps will be the single most important factor in whether your valuation is successful.

Data and Trademark Citations

• The National Association of Realtors (NAR) provides guidelines on how real estate professionals conduct a Comparative Market Analysis (CMA), which uses comps.