September Market Update: Autumn Arrives With Selective Strength

A tale of diverging markets as the fall season takes hold across the region.

Engel & Völkers Western Frontier | October 2026

September's data captures a region at an inflection point. As the summer selling season gave way to fall, the Western Frontier markets separated into two distinct camps: those continuing to build on late-summer momentum — Flathead and Ravalli counties chief among them — and those beginning to feel the weight of softening demand, rising inventory, and the seasonal deceleration that typically defines the fourth quarter. Luxury activity remained a defining thread, with Flathead County posting its second consecutive month above 50 high-end closings and Ravalli County delivering a stunning acceleration in million-dollar sales. Here is how each market closed out the third quarter.

Flathead County

Flathead County's September was a study in sustained strength. 173 sales (+6.1%) kept volume firmly in positive territory, while the pricing story remained exceptional: the average sale price reached $1,155,447 (+5.7%) and the median rose to $720,000 (+10.5%) — the highest median price of any month in this year's report series. The average price per square foot was $448 (-1.5%), essentially flat and consistent with the elevated home sizes characteristic of the high-end transactions driving the market. The luxury segment delivered once again, with 54 closings above $1,000,000 (+5.9%) — the strongest luxury month of the year for Flathead County. Active inventory eased to 906 homes (+9.8%), declining from August's peak as the fall listing season naturally moderates. The consistency of Flathead's performance through the back half of summer — sustained volume, appreciating prices, and a luxury market firing on all cylinders — paints the picture of a market that has found a durable, if elevated, equilibrium. Heading into the fourth quarter, the conditions favor sellers who are priced with precision and positioned to capture motivated fall buyers.

Lake County

Lake County's September presented a more challenging picture, with 38 sales (+5.6%) — a positive volume reading — offset by notable price softening across the board. The average sale price fell to $660,776 (-18.7%), the median to $497,000 (-19.1%), and the average price per square foot to $355 (-16.9%), all meaningful year-over-year declines. The luxury segment pulled back to 4 sales above $1,000,000 (-42.9%), a significant retreat from August's nine-closing high. Active inventory grew to 237 homes (+30.2%), the sharpest year-over-year inventory increase in the region this month and a factor that is giving buyers considerably more leverage than they have had in recent years on Flathead Lake. It is worth noting that September 2025 included an unusually strong cluster of high-value lakefront transactions that set a demanding comparable, and the low transaction volumes in this market amplify percentage swings in both directions. The modest uptick in sales volume is the more stable indicator to follow here, and it suggests underlying buyer interest in Lake County remains present even as pricing finds a new level.

Missoula County

Missoula County had a quiet September, with 116 sales (-4.1%) — the first month of year-over-year volume decline for the county since the spring. Pricing held remarkably steady given the broader context: the average sale price was $643,240 (-0.5%), the median came in at $560,000 (-2.3%), and the average price per square foot was $340 — exactly unchanged from last September. Those figures reflect a market that is absorbing its inventory expansion with notable discipline. Active listings grew to 501 homes (+13.9%), maintaining the elevated supply levels that have characterized Missoula throughout 2026. The luxury segment saw 8 sales above $1,000,000 (-27.3%), a pullback that is consistent with the broader seasonal deceleration. The overarching Missoula narrative through the third quarter has been one of balance — more supply, more buyer choice, and prices that have largely held their ground. That balance may be tested as the slower fall and winter months arrive, but the market enters the fourth quarter on solid footing.

Ravalli County

Ravalli County delivered the most dramatic September in this report, posting 66 sales — a 57.1% surge over last year that stands as the region's strongest year-over-year volume gain this month. Pricing followed suit across every metric: the average sale price rose to $778,547 (+8.6%), the median climbed to $652,000 (+13.4%), and the average price per square foot reached $357 (+5.6%). The luxury segment was extraordinary, with 10 sales above $1,000,000 representing a 400% increase over last September's two closings — a figure that signals a structural shift in who is buying in the Bitterroot Valley. Active inventory grew to 374 homes (+36.5%), a significant expansion in supply that, combined with surging demand, produced the month's most active market dynamic. The Ravalli County data for September is difficult to overstate: volume up 57%, prices up across the board, and luxury activity five times last year's level. Whether this momentum is sustained through the fall will be one of the more compelling storylines in the region heading into year-end.

Lewis & Clark County

Lewis & Clark County had a mixed September, with 96 sales (+4.3%) maintaining a modest positive volume trend even as pricing pulled back meaningfully. The average sale price fell to $467,804 (-13.7%) and the median declined to $433,000 (-14%), while the average price per square foot was $275 (-5.8%). Those declines follow several months of solid price gains in Helena's market and likely reflect a shift in the composition of homes selling this month toward more modest price points rather than a broad-based correction. Active inventory held tight at 233 homes (-6.4%), continuing the supply contraction that has been a defining characteristic of Lewis & Clark County throughout 2026. The luxury segment saw 2 sales above $1,000,000 (-60%), a quieter month at the upper end. The inventory picture remains the most compelling element of Helena's market: with active listings still 6.4% below last year, the supply constraint that has underpinned pricing through most of 2026 has not materially changed — and the pricing softness this month may prove temporary as that dynamic reasserts itself.

Lincoln County

Lincoln County had a difficult September, with 22 sales — a 33.3% decline from last year — and pricing that retreated across most measures. The average sale price was $506,995 (-8.4%), the median fell to $418,000 (-11.9%), and the average price per square foot was $303 (+2.4%) — the lone positive pricing indicator this month. The luxury segment saw 2 sales above $1,000,000 (-33.3%), moderating after July's surge. Active inventory grew to 249 homes (+13.2%), adding to buyer options in an already quiet market. September's pullback in Lincoln County follows the pattern established throughout 2026 in this market: strong months interspersed with softer ones, driven by the inherent variability of a low-volume market where a handful of transactions can shift the monthly picture dramatically. The price per square foot holding in positive territory is a quiet signal that underlying value has not eroded, and the market's affordability relative to the rest of the region continues to attract buyers seeking value in Northwest Montana.

Kootenai County

Kootenai County experienced a notable shift in September, with 302 sales — a 15.9% decline from last year — marking the county's first meaningful volume pullback after a sustained run of positive months. The median sale price held at $591,000 (+5.6%), a healthy gain that confirms pricing discipline remains intact even as transaction pace slows. Average days on market came in at 82 (-10.9%), a meaningful improvement in selling velocity year-over-year that speaks to motivated buyers acting decisively on well-priced properties. Active inventory stands at 2,825 homes (-3.4%), continuing the contraction in available supply that has characterized Kootenai County throughout the year. New listings totaled 439 (+2.8%), a modest uptick in fresh supply. The volume decline is worth watching, but the combination of price appreciation, improving days on market, and tightening inventory suggests the September softness may reflect a timing dynamic rather than a fundamental shift in demand. Kootenai County's underlying market structure remains among the most favorable for sellers in the broader region.

Spokane County

Spokane County closed out the third quarter with remarkable stability, recording 718 sales (-0.8%) — essentially flat with last September — and a median sale price of $410,000 that was unchanged year-over-year. The median price per square foot firmed to $222 (+1.8%), consistent with the modest appreciation seen in recent months. Homes are moving at a measured but still active pace, with median days on market at 26 (+4%) — a slight deceleration but well within the range of a healthy market. Active inventory grew to 3,848 homes (+6.6%), and new listings totaled 1,348 (+0.8%), both essentially keeping pace with last year as supply and demand maintain their equilibrium. Spokane's September data is perhaps the most consistent in this report: no dramatic swings in any direction, just a market operating with steady, reliable fundamentals as it transitions into fall. For buyers, the growing inventory and stable pricing represent an opportunity that has been rare in recent years. For sellers, the continued pace of closings affirms that well-priced homes are finding their buyers.

Looking Ahead

The third quarter closed with the Western Frontier region in a more complex posture than it entered the summer. Flathead and Ravalli counties are demonstrating that demand — particularly at the luxury level — remains robust and is actually accelerating in some respects. Markets like Missoula and Spokane continue to operate with admirable stability. And a handful of counties are showing the early signs of seasonal softening that will require more deliberate positioning from sellers as the fourth quarter unfolds. The fall market rewards preparation, precision, and local expertise above all else. Our advisors are tracking these trends closely and are ready to help you make the most informed decisions as the year moves toward its close.

Data reflects closed sales for September 2026 per Montana Regional MLS through October 6, 2026. Deemed reliable but not guaranteed. All statistics are compared to September 2025. This report is intended for informational purposes and does not constitute financial or investment advice.