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Housing Inventory: Active Listing Count Month-Over-Month in Mason County, WA (ACTLISCOUMM53045)

Observations

Oct 2026: -4.94
Updated: Nov 5, 2026 7:20 PM CST
Oct 2026:  -4.94  
Sep 2026:  -3.64  
Aug 2026:  -0.42  
Jul 2026:  7.66  
Jun 2026:  22.88  

Units:

Percent,
Not Seasonally Adjusted

Frequency:

Monthly

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Notes

Title Release Dates
Housing Inventory: Active Listing Count Month-Over-Month in Mason County, WA 2020-03-05 2026-11-05
 
Source    
Realtor.com 2020-03-05 2026-11-05
 
Release    
Housing Inventory Core Metrics 2020-03-05 2026-11-05
 
Units    
Percent 2020-03-05 2026-11-05
 
Frequency    
Monthly 2020-03-05 2026-11-05
 
Seasonal Adjustment    
Not Seasonally Adjusted 2020-03-05 2026-11-05
 
Notes    
The count of active single-family and condo/townhome listings for a given market during the specified month (excludes pending listings).

2020-03-05 2021-12-01
The count of active single-family and condo/townhome listings for a given market during the specified month (excludes pending listings).

With the release of its November 2021 housing trends report, Realtor.com® incorporated a new and improved methodology for capturing and reporting housing inventory trends and metrics. The new methodology uses the latest and most accurate data mapping of listing statuses to yield a cleaner and more consistent measurement of active listings at both the national and local level. The methodology has also been adjusted to better account for missing data in some fields including square footage. Most areas across the country will see minor changes with a smaller handful of areas seeing larger updates. As a result of these changes, the data released since December 2021 will not be directly comparable with previous data releases (files downloaded before December 2021) and Realtor.com® economics blog posts. However, future data releases, including historical data, will consistently apply the new methodology. More details are available at the source's Real Estate Data Library (https://www.realtor.com/research/data/).

2021-12-02 2022-09-28
The count of active single-family and condo/townhome listings for a given market during the specified month (excludes pending listings).

With the release of its September 2022 housing trends report, Realtor.com® incorporated a new and improved methodology for capturing and reporting housing inventory trends and metrics. The new methodology updates and improves the calculation of time on market and improves handling of duplicate listings. Most areas across the country will see minor changes with a smaller handful of areas seeing larger updates. As a result of these changes, the data released since October 2022 will not be directly comparable with previous data releases (files downloaded before October 2022) and Realtor.com® economics blog posts. However, future data releases, including historical data, will consistently apply the new methodology. More details are available at the source's Real Estate Data Library (https://www.realtor.com/research/data/).

With the release of its November 2021 housing trends report, Realtor.com® incorporated a new and improved methodology for capturing and reporting housing inventory trends and metrics. The new methodology uses the latest and most accurate data mapping of listing statuses to yield a cleaner and more consistent measurement of active listings at both the national and local level. The methodology has also been adjusted to better account for missing data in some fields including square footage. Most areas across the country will see minor changes with a smaller handful of areas seeing larger updates. As a result of these changes, the data released since December 2021 will not be directly comparable with previous data releases (files downloaded before December 2021) and Realtor.com® economics blog posts. However, future data releases, including historical data, will consistently apply the new methodology. More details are available at the source's Real Estate Data Library (https://www.realtor.com/research/data/).

2022-09-29 2026-11-05

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Mason County, WA Washington (state) Active Listing Listing Realtor.com County or County Equivalent Copyrighted: Citation Required Monthly United States of America Not Seasonally Adjusted