Katonah–Lewisboro Real Estate Market Update: September 2026
September data • October 2026 draft
On Saturday morning, I was driving along Katonah Avenue on my way to the bank. With the autumn leaves and cool air, Katonah reminded me of a New England vacation town. There’s a relaxing feeling about this time of year—apple pie, pumpkins and Halloween just around the corner.
Katonah–Lewisboro’s September report pairs stronger single-family sales with a slightly lower median sale price. Condominiums present a different picture: only two sales closed, and reported inventory and months of supply increased.
September housing market at a glance
Geography: Katonah-Lewisboro School District. Property types are reported separately. All year-over-year comparisons below are with September 2025.
| Property type | Unit Sales | Median Sale Price | Days on Market | Inventory | Months of Supply |
|---|---|---|---|---|---|
| Single-family | 24 | $1,111,625 | 29 | 48 | 3.25 |
| Condominium | 2 | $609,714 | 26 | 9 | 6.35 |
| Co-op | 0 | Not available | Not available | 0 | Not available |
| Multi-unit | 0 | Not available | Not available | 3 | Not available |
Source: William Raveis Local Housing Data, September 2026, reports generated October 5, 2026. “Days on Market” is reproduced as labeled; the supplied reports do not specify whether it is an average or median. Inventory is the report’s September figure, not a live listing count. Unavailable statistics are not zero values.
What stands out this month
Single-family sales increased 60.0% while the median sale price declined 1.2%. Median price per square foot rose 16.2%, showing why a single measure cannot explain the entire market. Condos had 6.35 months of supply versus 3.25 for houses, although the two-sale condo sample limits conclusions.
Katonah–Lewisboro Single-family market
The report recorded 24 sales and a $1,111,625 median sale price. The reported days-on-market figure was 29.
- Unit Sales: 24 (up 60.0% vs sept 2025).
- Median Sale Price: $1,111,625 (down 1.2% vs sept 2025).
- Days on Market: 29 (down 19.4% vs sept 2025).
- Median Sale Price/SF: $438 (up 16.2% vs sept 2025).
- Inventory: 48 (down 21.3% vs sept 2025).
- Months of Supply: 3.25 (down 12.4% vs sept 2025).
96% sold within 90 days of listing; 92% sold for more than 95% of list price. These are shares of sales meeting those thresholds, not an average sale-to-list ratio.
Katonah–Lewisboro Condominium market
The report recorded 2 sales and a $609,714 median sale price. The reported days-on-market figure was 26.
- Unit Sales: 2 (down 33.3% vs sept 2025).
- Median Sale Price: $609,714 (up 9.6% vs sept 2025).
- Days on Market: 26 (up 13.0% vs sept 2025).
- Median Sale Price/SF: $305 (down 22.0% vs sept 2025).
- Inventory: 9 (up 80.0% vs sept 2025).
- Months of Supply: 6.35 (up 164.7% vs sept 2025).
100% sold within 90 days of listing; 100% sold for more than 95% of list price. These are shares of sales meeting those thresholds, not an average sale-to-list ratio.
Small sample: This category had only 2 closing(s). Its median and percentages can change sharply with the particular properties sold. They should not be treated as a broad change in every property’s value.
Katonah–Lewisboro Co-op market
No co-op sales were recorded in September. Reported inventory was 0. A median sale price and days-on-market result are unavailable; the report’s 0% sold indicators do not describe an actual group of completed sales.
Katonah–Lewisboro Multi-unit market
No multi-unit sales were recorded in September. Reported inventory was 3. A median sale price and days-on-market result are unavailable; the report’s 0% sold indicators do not describe an actual group of completed sales.
What buyers should do next
Start with the segment that fits your plans, then compare similar homes and current listings. Have financing or proof of funds prepared and review the total monthly cost before making an offer. A monthly market snapshot provides context; the condition, location and pricing of a particular property determine how you should approach it.
What sellers should do next
Use recent comparable sales and current competition to set your strategy. A district median is not a suggested list price. Preparation, realistic pricing and clear marketing remain important even when inventory is limited. Condo and co-op sellers should gather building documents early; multi-unit sellers should assemble leases, income and expense records and information about permitted use.
Helpful resources and a local conversation
Visit my Forms and Links page and Metro-North station guide. Considering a sale? Start with a Raveis home-value estimate, then contact me for a property-specific analysis. An automated estimate is a starting point, not an appraisal.
Planning a purchase? Visit my Real Estate Money Page to explore financing tools, then confirm your options and total monthly costs with your lender.
For more local reading, explore my post about the New Croton Dam and reservoir and my earlier Katonah–Lewisboro School District single-family market post. Earlier market figures cover a different reporting period; use the September 2026 data above for this month’s snapshot.
Thomas Roberts | RealtorTom
NYS Licensed Real Estate Salesperson
William Raveis Real Estate, Rye, NY
Thomas.Roberts@raveis.com
General market information. Conditions vary by property, building and price range. Equal Housing Opportunity.
Frequently asked questions
What area and period does this report cover?
These figures cover the Katonah-Lewisboro School District for September 2026. They are not a citywide or countywide report, and they do not summarize the full third quarter.
What were the September 2026 median sale prices?
Single-family: $1,111,625 (24 sales). Condominium: $609,714 (2 sales). Co-op: unavailable because no sales closed (0 sales). Multi-unit: unavailable because no sales closed (0 sales).
Does a change in median price show how much my home gained or lost?
No. A median summarizes the sales that closed during the month. Changes in the mix of properties sold can change the median. A property-specific comparative market analysis is needed.
How should I compare houses, condos and co-ops?
Compare similar properties within the same segment. For condos and co-ops, include monthly charges, building finances, condition, parking and applicable purchase requirements.
How can I get a market analysis for my property?
Contact Thomas Roberts at William Raveis Real Estate in Rye for a comparison of recent sales and current competition tailored to your property.
