Harrison, NY Housing Market Update 2026: Prices, Inventory & DOM

Harrison is a combined town and village, and “Harrison” on a listing sheet can mean Downtown Harrison, West Harrison, Purchase, or the whole municipality, depending on who built the filter. Purchase estate-lot sales trade in a different competitive set than downtown Colonials and Capes near the Metro-North station, and condo and co-op interests are not interchangeable with fee-simple single-family comps. A Harrison median is a useful temperature check. It is not a value opinion for any one house. An appraisal still has to match the subject’s location within Harrison, product type, condition, lot size and utility, and the effective date.

This October 2026 Insights post reads the latest closed-sale statistics the way an appraiser does: price level, inventory, days on market (DOM), sale-to-list, and closed volume, with no lifestyle framing. It complements the methodology piece Appraising Homes in Harrison, NY and does not replace a property-specific assignment. Local residential coverage is described on the firm’s Harrison appraisal page.

Sources: Three public series are used below. The primary is the Houlihan Lawrence Harrison Single Family Monthly Market Report for September 2026 (OneKey MLS). The second is the William Pitt Sotheby’s Harrison Market Tracker for September 2026. The third is the Homix OneKey-based Harrison report (data as of October 8, 2026), which reports far fewer September closings than the other two and is clearly a narrower geographic filter. Different filters produce different counts. That is expected. Appraisers reconcile competing series by reading the filter first, then the number, and by verifying current MLS closed sales for the assignment’s effective date.

September 2026: Harrison Single-Family Snapshot

Houlihan Lawrence’s Harrison single-family table for September 2026 shows:

• Median sale price: $2,312,500 (+1.6% versus August 2026; +30.5% versus September 2025)
• Average sale price: $2,675,061 (+8.8% MoM; +43.3% YoY)
• Units sold: 17 (+6.3% MoM; +6.3% YoY)
• Average DOM: 29 days (+123.1% MoM; −29.3% YoY)
• Sale-to-list (% of sales price): 102.92% (−7.2% MoM; +4.7% YoY)
• Units for sale: 38 (+58.3% MoM; +11.8% YoY)
• Months of inventory: 2.20 (+46.7% MoM; +4.8% YoY)

Year-to-date context from the same report’s ten-year table (through September 30, 2026): the YTD median sold price is listed as $2,537,500, about 45% above the 2025 full-year median of $1,749,500 on that table. For scale, the same table shows full-year medians of $1,275,000 in 2017 and $1,858,250 in 2024.

Source: Houlihan Lawrence Harrison Single Family Monthly Market Report, September 2026 (OneKey MLS). Figures deemed reliable but not guaranteed; not a value opinion for any subject property.

In Harrison, the September single-family read is still competitive but no longer as tight as it was. There were seventeen closings at a $2.31 million median, sale-to-list near 103%, and a 29-day average DOM. Inventory rose to 38 homes and about 2.2 months of supply. Year over year the median rose 30.5%, while month over month DOM more than doubled and sale-to-list eased about seven percent. Those facts describe market conditions. They do not price any one house.

William Pitt Tracker and Homix: Same Month, Different Filters

William Pitt Sotheby’s Harrison Market Tracker for September 2026 (single-family unless noted) lines up closely with the HL price, volume, and DOM picture:

• Units sold (September, SF): 17 (flat YoY; +88.9% versus September 2024)
• Median sold: about $2.3 million (+28.5% YoY); average: about $2.7 million (+28.8% YoY)
• Average DOM: 30 (−24.7% YoY); percentage of asking: 102% (+6.5% YoY)
• Average $/SF: $528 (+12.9% YoY); new SF listings: 23 (+109.1% YoY)
• YTD SF sold (January–September): 96 (−17.2% versus YTD 2025)
• YTD other product types: Condo/Co-op 32 (+23.1%), Multi-Family 14 (−39.1%), Land 2
• Total monthly inventory (all product types): 88 units (+22.2% YoY; +69.2% versus September 2024)

Source: William Pitt Sotheby’s Harrison Market Tracker (September 2026). Brokerage dashboard figures are deemed reliable but not guaranteed.

Notice that the HL percentages and the WP percentages for the same month are close but not identical. HL shows the average price up 43.3% year over year, while WP shows it up 28.8%. Small differences in the September 2025 base set, the status cutoffs, or the area boundary can move a percent change a lot when the sample is seventeen sales. Also note that WP’s 88-unit inventory figure covers all product types, while HL’s 38 counts single-family only. That is not a contradiction to average away. It is the same lesson as in the firm’s Rye housing market 2026 post: read the filter before quoting the number.

Homix’s OneKey-based Harrison report (data as of October 8, 2026) is a much smaller cut:

• Single-family, September 2026: median $2,363,750 versus $1,135,000 in September 2025; 8 closed versus 4; homes for sale 13 versus 12; average DOM 14 versus 17; % of original list 109.5% versus 101.9%; new listings 6 versus 6; about 2.6 months of supply
• Single-family, 12 months through 09/2026: median $2,255,000 versus $1,500,000 (+50.3%); closed 61 versus 69 (−11.6%); average DOM 26 versus 35; % of original list 106.7% versus 103.4%
• Condo, September: 3 sales, median $385,000, DOM 23, 101.2% of original list; 12-month median $395,000 on 7 sales

Source: Homix Harrison market report. Homix notes its figures are calculated from OneKey MLS data and that small samples can make percent changes look extreme. A +108% year-over-year September median on eight versus four sales shows exactly that problem. Even so, its 12-month series (61 closings) is a reasonable cross-check on direction.

Why Harrison Headlines Mislead

Every series above shows a Harrison median well above $2 million, and that headline is easy to misuse. Common failure modes when someone quotes it as “the Harrison market”:

• Mix shift versus price movement: The HL YTD median jumped from $1,749,500 (2025) to $2,537,500 (2026 YTD), while WP shows YTD single-family sales down 17.2%. Fewer, larger sales can lift a median without any change in what a typical downtown or West Harrison house would bring. Average sale price ($2.68M) sitting above the median ($2.31M) points the same way.
• Purchase versus the rest of Harrison: Large-lot Purchase sales and in-town sales near the train are not interchangeable comps. Proximity factors need data support, not assumptions. See train proximity and property values.
• Thin samples: Seventeen closings (HL/WP) or eight (Homix) is a small set. One estate-scale closing, or the lack of one, can swing a monthly median.
• Sale-to-list is not a blanket premium: About 103% describes September closed outcomes in aggregate. It does not mean every listing clears above asking. With 38 single-family homes for sale and new listings up sharply year over year (WP: 23 new single-family listings, +109.1% year over year), pricing inside the subject’s band matters more than the town average.
• Condo/co-op versus fee-simple: Homix’s $385,000 condo median is a different product from detached single-family analysis.

For a deeper primer on how appraisers parse medians, months of supply, DOM, and sale-to-list, see Market Conditions and How Appraisers Analyze the Stats.

How Appraisers Read Harrison’s Competitive Sets

Market-conditions commentary in a Harrison appraisal is built from the sales that actually compete with the subject, not from the area headline alone.

• Confirm the location first: Purchase, West Harrison, or Downtown Harrison. Pull comps inside that set before expanding to neighboring Rye Brook, Rye City, White Plains, or North Castle sales.
• Bracket lot size and utility: Acre-plus Purchase parcels are bracketed against similar lots. Smaller in-town lots are bracketed against in-town sales.
• Time adjustments from the set: With the year-over-year median up roughly 30% (HL) and inventory rising month over month, a supported time adjustment matters when the matched set spans several months.
• Inventory as absorption context: About 2.2 months of single-family supply (HL) and 2.6 months on Homix’s narrower cut both sit in competitive territory. Rising listings mean the appraiser should document active and pending competition inside the subject’s own price and quality band.
• Assessment versus market value: Assessed value is not market value. Tax-grievance work compares the assessment to a current, supportable market-value opinion. See tax grievance and Harrison tax grievance 2026.

Private-Use Assignments When Medians Jump This Fast

When the reported median moves 30% or more in a year, AVM estimates and area averages fall furthest behind matched sales. That holds in both directions, because a mix-driven median can overstate a typical house as easily as a stale AVM can understate it. For files that must stand up for counsel or a fiduciary:

• Estate / date-of-death: A retrospective opinion for Form 706, probate, or fiduciary accounting uses market evidence knowable as of the date of death. When year-over-year medians have moved this much, the gap between a date-of-death value and today’s value can be material. See estate / date-of-death and date of death vs current market value.
• Divorce / equitable distribution: Current or retrospective (including date-of-commencement) valuations of the marital residence. In a market where the reported median rose about 30% in twelve months, the effective date is not a formality. See divorce appraisal and date-of-commencement appraisals in NY divorce.
• Attorney and fiduciary briefing: Counsel often need a plain-English read of whether a proposed buyout or listing price is consistent with recent matched sales, not with the town median or an AVM alone. Private USPAP reports differ from lender forms. See private vs lender appraisals and the firm’s attorney resources.

Final Thoughts

As of the September 2026 Houlihan Lawrence Harrison single-family report, Harrison’s market is competitive on the five metrics that matter for appraisal commentary. The William Pitt tracker backs up the price, volume, DOM, and sale-to-list figures, and Homix’s narrower cut shows the same direction. The HL report shows a $2,312,500 median on seventeen closings, sale-to-list near 103%, a 29-day average DOM, and about 2.2 months of inventory, with the median up 30.5% year over year. It also shows signs of loosening month over month: more listings, longer DOM, and a lower sale-to-list ratio. Mix-driven medians mislead. Those facts describe market conditions. They do not price any one house.

A defensible Harrison appraisal still starts with physical evidence and matched sales from the right part of town. That set is then placed against the area statistics as context. Whether the purpose is estate settlement, divorce, tax grievance, or a private purchase opinion, Madison & Park builds the analysis that way across Westchester, Manhattan, and Greenwich CT. Dave Lister, SRA, is a New York certified residential appraiser and is Licensed in Connecticut; Court Approved status applies in New York only.

Hero photo: U.S. Post Office, Harrison, NY, by Doug Kerr, via Wikimedia Commons, licensed CC BY-SA 2.0; resized.