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Mercer Island, WA Real Estate & Property Data

Mercer Island Real Estate Market Trends
Last Updated: September 20, 2025

Accurate and comprehensive real estate data is critical for insight into Mercer Island, WA 98040. ATTOM’s Mercer Island real estate data is updated daily, and current market trends show that in Mercer Island, WA a total of 333 residential properties have sold over the past year. With a median home price of $2,570,000 in Mercer Island and a total of 1 foreclosures. Get detailed property data for Mercer Island, WA instantly. ATTOM is your one-stop-shop for the Mercer Island property reports and real estate data you need in Mercer Island, WA.

Mercer Island Real Estate Market Trends
Get property data for any address in Mercer Island, WA or the country:
Total Residential Properties 8,101
Total Commercial Properties 111
Avg. Home Age (Single Family Home) 51 Years
Avg. Square Feet (Single Family Home) 3,145
Total 2025 Residential Sales (year-to-date) 173
% of Homes Seriously Underwater (Q3 2025) 0.62%
Total 2024 Residential Sales 294
% of Equity Rich Homes (Q3 2025) 57%
Effective 2024 Property Tax 0.57%
Total Foreclosure Filings (year-to-date) 4
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Mercer Island, WA 98040 Real Estate Overview

There were 333 residential properties sold in the past year in Mercer Island, WA 98040. The median home value in Mercer Island, WA 98040 is $2,347,948. There are a total of 8,101 residential properties in the 98040.

Median Sales Price i
$2,570,000
(Jul 2025)
+16.8%
year-over-year
y-o-y
List Graph
1 year 3 years Subscribe 5 years Subscribe
  • July '25 Jul '25 $2,570,000
  • June '25 Jun '25 $2,595,000
  • May '25 May '25 $2,750,000
  • April '25 Apr '25 $2,550,000
  • March '25 Mar '25 $3,000,000
  • February '25 Feb '25 $3,449,900
  • January '25 Jan '25 $2,180,000
  • December '24 Dec '24 $2,250,000
  • November '24 Nov '24 $2,100,000
  • October '24 Oct '24 $2,345,000
  • September '24 Sep '24 $2,115,000
  • August '24 Aug '24 $2,880,000
Median Down Payment i
$759,750
(Jul 2025)
-0.7%
year-over-year
y-o-y
List Graph
1 year 3 years Subscribe 5 years Subscribe
  • July '25 Jul '25 $759,750
  • June '25 Jun '25 $1,072,000
  • May '25 May '25 $1,448,150
  • April '25 Apr '25 $710,000
  • March '25 Mar '25 $1,109,400
  • February '25 Feb '25 $1,355,150
  • January '25 Jan '25 $800,000
  • December '24 Dec '24 $637,500
  • November '24 Nov '24 $514,937
  • October '24 Oct '24 $691,700
  • September '24 Sep '24 $725,000
  • August '24 Aug '24 $951,500
Number of Homes Sold i
38
(Jul 2025)
+8.6%
year-over-year
y-o-y
List Graph
1 year 3 years Subscribe 5 years Subscribe
  • July '25 Jul '25 38
  • June '25 Jun '25 37
  • May '25 May '25 29
  • April '25 Apr '25 26
  • March '25 Mar '25 20
  • February '25 Feb '25 13
  • January '25 Jan '25 10
  • December '24 Dec '24 17
  • November '24 Nov '24 22
  • October '24 Oct '24 34
  • September '24 Sep '24 27
  • August '24 Aug '24 25
Number of Purchase Loans i
25
(Jul 2025)
-7.4%
year-over-year
y-o-y
List Graph
1 year 3 years Subscribe 5 years Subscribe
  • July '25 Jul '25 25
  • June '25 Jun '25 20
  • May '25 May '25 15
  • April '25 Apr '25 22
  • March '25 Mar '25 18
  • February '25 Feb '25 6
  • January '25 Jan '25 6
  • December '24 Dec '24 10
  • November '24 Nov '24 12
  • October '24 Oct '24 22
  • September '24 Sep '24 21
  • August '24 Aug '24 18
Number of REFI Loans i
10
(Jul 2025)
+25%
year-over-year
y-o-y
List Graph
1 year 3 years Subscribe 5 years Subscribe
  • July '25 Jul '25 10
  • June '25 Jun '25 9
  • May '25 May '25 9
  • April '25 Apr '25 19
  • March '25 Mar '25 11
  • February '25 Feb '25 12
  • January '25 Jan '25 8
  • December '24 Dec '24 10
  • November '24 Nov '24 12
  • October '24 Oct '24 15
  • September '24 Sep '24 6
  • August '24 Aug '24 9
Number of HELOC Loans i
8
(Jul 2025)
+14.3%
year-over-year
y-o-y
List Graph
1 year 3 years Subscribe 5 years Subscribe
  • July '25 Jul '25 8
  • June '25 Jun '25 19
  • May '25 May '25 14
  • April '25 Apr '25 19
  • March '25 Mar '25 11
  • February '25 Feb '25 6
  • January '25 Jan '25 12
  • December '24 Dec '24 11
  • November '24 Nov '24 8
  • October '24 Oct '24 13
  • September '24 Sep '24 9
  • August '24 Aug '24 11

Mercer Island, WA 98040 Real Estate Market Overview

Last 30 days
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Mercer Island, WA 98040 Foreclosure Activity

There were a total of 1 Mercer Island, WA 98040 properties with a foreclosure filing in July 2025.

Total Foreclosure Filings i
1
(Jul 2025)
year-over-year
y-o-y
List Graph
1 year 3 years Subscribe 5 years Subscribe
  • July '25 Jul '25 1
  • June '25 Jun '25 N/A
  • May '25 May '25 N/A
  • April '25 Apr '25 1
  • March '25 Mar '25 N/A
  • February '25 Feb '25 1
  • January '25 Jan '25 1
  • December '24 Dec '24 N/A
  • November '24 Nov '24 N/A
  • October '24 Oct '24 1
  • September '24 Sep '24 N/A
  • August '24 Aug '24 2
Foreclosure Starts i
1
(Jul 2025)
year-over-year
y-o-y
List Graph
1 year 3 years Subscribe 5 years Subscribe
  • July '25 Jul '25 1
  • June '25 Jun '25 N/A
  • May '25 May '25 N/A
  • April '25 Apr '25 1
  • March '25 Mar '25 N/A
  • February '25 Feb '25 N/A
  • January '25 Jan '25 1
  • December '24 Dec '24 N/A
  • November '24 Nov '24 N/A
  • October '24 Oct '24 1
  • September '24 Sep '24 N/A
  • August '24 Aug '24 2
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