Castle Rock now has the tightest inventory on the Front Range. The Castle Rock housing market October 2026 report shows months of supply falling to 3.95 — below Longmont for the first time in this series — while the median sold price rose and homes sold faster. After two months of building inventory over the summer, Castle Rock has reversed course decisively.
The Big Picture
Castle Rock remains in seller’s market territory with 3.95 months of inventory, down 8.35% from the previous month. Homes sold for 98.3% of list price, down 0.38%, and the median sold price came in at $686,500 — up 2.46%.
Year over year, inventory is down 4.8%. This is the second consecutive month of tightening after July and August saw Castle Rock building supply faster than anywhere else in the region.
Sellers Keep Pulling Back
New listings fell 12.8% to 157 properties — the third straight month of double-digit declines, after August’s 21.5% drop and September’s 10.9%. The median list price on those new listings rose 5.5% to $735K, with a median living area of 2,907 square feet, up 5.9%.
Active listings fell 11% to 553 properties at a median list price of $739K, up 3.4%, with total active dollar volume down 4.8% to $558.6M.
Three consecutive months of shrinking new supply is the clearest trend in Castle Rock’s data. Fewer sellers are coming to market, and those who do are asking more.
Speed to Sale
The median time a home spent in RPR (Realtors Property Resource) before selling was 40 days, down 4.76% from the prior month. Active listings, however, are sitting a median of 79 days, up 14.5%.
That 79-day figure is the longest active-listing median among the four Front Range markets and it keeps climbing — it was 68 days in September. The homes that have not sold are aging noticeably, even as the overall market tightens around them.
Pending Activity
New pending listings rose 2.9% to 105 properties at a median list price of $725K, up 10.7%, with a median of 38 days in RPR, down 17.4%. Pending listings overall numbered 112, down 16.4%, at a median list price of $762.5K, up 5.2%.
Pending listings preview where closed sales are heading. Castle Rock’s pending median of $762.5K sits well above October’s $686,500 closing price — the widest gap of the four markets — which points to higher closings ahead in November.
Sold Homes
118 homes sold in October, down 6.3%, at a median price of $686.5K and a sold-to-list ratio of 98.29%, down 0.4%. Total sold volume reached $100.4M, down 5.4%, with median sold price per square foot at $259, up 0.4%.
Property Values
The median estimated property value across Castle Rock came in at $678,870, down just 0.1% for the month and 1.5% over the past 12 months. That monthly change is the smallest decline Castle Rock has posted this quarter — the drift lower is flattening out.
What This Means for Buyers and Sellers
For sellers, the fundamentals have swung in your favor. Inventory is the tightest on the Front Range at 3.95 months, new listings have fallen for three straight months, and pending prices are running well above what is closing. That said, the 79-day active median is a real warning: this market rewards accurate pricing and punishes optimism more than the headline numbers suggest. Price to the $259 per square foot that is actually closing.
For buyers, Castle Rock still offers the most space per dollar on the Front Range. At $259 per square foot on sold homes and $272 on active listings, with a median active living area of 3,031 square feet, you get substantially more house than in Boulder at $566 per square foot or Denver at $371. Your leverage is in the aged inventory — with standing listings averaging 79 days, there are motivated sellers among them.
As always, conditions vary by subdivision, home size, and whether you are looking at resale or new construction, so working with an agent familiar with the specific submarket remains valuable.
Data source: Realtors Property Resource (RPR), October 2026, based on Castle Rock, CO listings for single-family, condo, townhome, and apartment properties.
For a look at how the wider metro performed the same month, see our Denver housing market update for October 2026, or compare with Castle Rock’s September 2026 figures.