Northern Colorado is averaging 60+ days on market. Here is what that shift means for how you underwrite deals today.
Northern Colorado investors are hitting 60-plus days on market. A year ago, the same properties were moving in 30 days or less. That shift is not a blip. It is a signal worth paying attention to, and not just for fix-and-flip operators.
Days on market is probably the most honest metric in residential real estate. It does not lie the way appraisals sometimes do, it is not smoothed the way median sales prices get smoothed by mix shift, and sellers cannot fake it. When a house sits, it sits.
The Colorado Association of Realtors has been tracking this statewide. In Boulder County and Larimer County, median days on market rose from 22 days in Q1 2024 to 38 days in Q1 2026. Weld County, which covers the Greeley and Windsor markets, moved from 30 to 58 days over the same stretch. That is not an anomaly. That is a market that has fundamentally changed pace.
What is driving it is not a mystery. Mortgage rates sitting between 6.7% and 7.1% throughout Q1 2026 have kept a significant portion of potential move-up buyers locked in place. They bought or refinanced at 3% or 4%, and they are not trading that payment for a 7% mortgage unless they have to. So inventory is building not because sellers are flooding the market, but because demand has pulled back while supply slowly accumulates.
For buy-and-hold investors, extended days on market affects exit math. If you are holding a rental and need to sell, you should assume 60 to 75 days of carrying cost in your pro forma right now, not 30. That is two extra mortgage payments, two months of insurance, two months of taxes. On a $350,000 property with a $2,100 monthly payment, you are talking roughly $4,200 in additional holding cost you may not have priced in.
For fix-and-flip operators, the math is sharper. Active operators in Northern Colorado have started baking in an additional 5% ARV haircut on top of whatever the comps suggest. That is not pessimism. That is what you do when the market tells you it cannot absorb product as fast as it used to.
The one counterpoint worth noting: certain submarkets inside the Denver metro are not following this pattern. Berkeley, which sits along Tennyson Street in northwest Denver, is still moving new construction product at high price points before the build even finishes. That is a specific neighborhood with limited inventory and a specific buyer profile. It is not representative of the broader market, and conflating it with the overall picture will get you into trouble.
The practical takeaway is simple. If you are underwriting a deal right now, assume the sale takes longer than you want it to. If your deal still pencils at 75 days on market, you have room to operate. If it only pencils at 30, you are one slow weekend open house away from a problem.
Sources: Colorado Association of Realtors monthly market reports (Q1 2024 through Q1 2026), available at coloradorealtors.com. Freddie Mac Primary Mortgage Market Survey for rate tracking.
