August 7, 2026
If you have ever talked to a real estate agent, appraiser, or lender, you have probably heard the word "comps" thrown around like everyone in the room already knows exactly what it means. If you nodded along and hoped it would make sense later, you are not alone.
Comps is short for comparables. It refers to recently sold properties that are similar to the property you are buying, selling, or evaluating, in terms of location, size, condition, and features. Instead of guessing what a home is worth, agents and appraisers look at what similar homes nearby have actually sold for. That real world sales data becomes the foundation for pricing decisions.
Think of it like this. If you wanted to know what a used car is worth, you would not just ask the owner what they think it is worth. You would look at what similar makes, models, years, and mileage recently sold for. Real estate works the same way, just with a lot more variables in play.
Comps matter because they keep pricing grounded in reality instead of emotion or wishful thinking. Sellers often have a number in their head based on what they paid, what they put into renovations, or what they simply feel their home should be worth. Buyers, on the other hand, want to make sure they are not overpaying. Comps give both sides an objective reference point.
Comps also drive the appraisal process. When a buyer gets a mortgage, the lender orders an appraisal to confirm the home is actually worth what the buyer agreed to pay. Appraisers lean heavily on comps to support their valuation. If the comps do not support the price, the deal can run into financing trouble, which is why understanding comps early in the process saves everyone a headache later.
Not every recently sold property nearby qualifies as a strong comp. A good comp usually checks most of these boxes:
The tighter the match across these categories, the more reliable the comp. When comps are harder to find, maybe because a property is unusual or in a less active neighborhood, agents and appraisers have to work harder and sometimes stretch the criteria, which introduces more room for disagreement.
Agents pull comps from the local Multiple Listing Service, which tracks actual closed sales along with details like sale price, days on market, and any concessions the seller offered. From there, it is not just about averaging numbers. A good agent adjusts for differences. If a comp has an updated kitchen and yours does not, that gets factored in. If a comp sold with a lower interest rate environment six months ago, that context matters too.
This is also where local knowledge becomes valuable. Two homes can look identical on paper and still be worth very different amounts depending on the specific block, school zone, or even which side of the street they sit on. That is the kind of nuance a spreadsheet cannot capture but an experienced local agent can.
The comps themselves are the same, but how each side uses them differs a bit. Sellers use comps to set a listing price that will attract offers without leaving money on the table. Buyers use comps to figure out whether an asking price is fair and to support a competitive but reasonable offer. In multiple offer situations, buyers sometimes look at comps to justify going above asking price, especially in markets where inventory is tight and comps are trending upward month over month.
This happens more often than people expect, especially with unique properties, new construction, or homes in areas with very few recent sales. When comps are limited, agents may expand the search radius, look further back in time, or use active listings and pending sales as a secondary reference point, even though those are not perfect substitutes for closed sales. This is a situation where experience really matters, since pricing without strong comps requires more judgment and market feel.
Comps are simply the market's way of keeping everyone honest. They take the guesswork out of pricing and give buyers, sellers, and lenders a shared reference point grounded in actual sales, not opinions. If you are getting ready to buy or sell, ask your agent to walk you through the comps for your specific property. Understanding the "why" behind a price is one of the best ways to negotiate with confidence.
Disclaimer: This content is intended for informational and educational purposes only and is not intended to be construed as legal, tax, financial, or insurance advice. Every property and tax situation is unique. Please consult a licensed attorney, CPA, or tax professional regarding your specific circumstances before making any decisions related to property improvements, tax assessments, or real estate transactions. Mohammed M. Rahman is a licensed real estate broker in New York. Contact: Mo@ClosedByMo.com.
