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Sister Bay, WI Real Estate & Property Data

Sister Bay Real Estate Market Trends

Last Updated: August 30, 2025

Accurate and comprehensive real estate data is critical for insight into Sister Bay, WI 54234. ATTOM’s Sister Bay real estate data is updated daily, and current market trends show that in Sister Bay, WI a total of 148 residential properties have sold over the past year. With a median home price of $704,550 in Sister Bay. Get detailed property data for Sister Bay, WI instantly. ATTOM is your one-stop-shop for the Sister Bay property reports and real estate data you need in Sister Bay, WI.

Sister Bay Real Estate Market Trends

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Total Residential Properties 3,185

Total Commercial Properties 167

Avg. Home Age (Single Family Home) N/A

Avg. Square Feet (Single Family Home) N/A

Total 2025 Residential Sales (year-to-date) 62

% of Homes Seriously Underwater (Q3 2025) 1.22%

Total 2024 Residential Sales 133

% of Equity Rich Homes (Q3 2025) 19.47%

Effective 2024 Property Tax 0.76%

Total Foreclosure Filings (year-to-date) N/A

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Sister Bay, WI 54234 Real Estate Overview

There were 148 residential properties sold in the past year in Sister Bay, WI 54234. The median home value in Sister Bay, WI 54234 is $467,500. There are a total of 3,185 residential properties in the 54234.

Median Sales Price i

$704,550

(Jun 2025)

-32.9%

year-over-year

y-o-y

June '25 Jun '25 $704,550
May '25 May '25 $820,100
April '25 Apr '25 N/A
March '25 Mar '25 N/A
February '25 Feb '25 $700,000
January '25 Jan '25 $483,500
December '24 Dec '24 $453,865
November '24 Nov '24 $801,750
October '24 Oct '24 $565,000
September '24 Sep '24 $774,450
August '24 Aug '24 $1,365,000
July '24 Jul '24 $573,250

Median Down Payment i

$166,615

(Jun 2025)

-72.2%

year-over-year

y-o-y

June '25 Jun '25 $166,615
May '25 May '25 $164,100
April '25 Apr '25 N/A
March '25 Mar '25 N/A
February '25 Feb '25 $140,000
January '25 Jan '25 $172,125
December '24 Dec '24 $74,125
November '24 Nov '24 $200,000
October '24 Oct '24 $125,000
September '24 Sep '24 $126,997
August '24 Aug '24 $292,000
July '24 Jul '24 $98,500

Number of Homes Sold i

12

(Jun 2025)

+140%

year-over-year

y-o-y

June '25 Jun '25 12
May '25 May '25 10
April '25 Apr '25 11
March '25 Mar '25 9
February '25 Feb '25 9
January '25 Jan '25 11
December '24 Dec '24 18
November '24 Nov '24 9
October '24 Oct '24 12
September '24 Sep '24 15
August '24 Aug '24 13
July '24 Jul '24 14

Number of Purchase Loans i

5

(Jun 2025)

+400%

year-over-year

y-o-y

June '25 Jun '25 5
May '25 May '25 6
April '25 Apr '25 6
March '25 Mar '25 1
February '25 Feb '25 9
January '25 Jan '25 2
December '24 Dec '24 13
November '24 Nov '24 7
October '24 Oct '24 8
September '24 Sep '24 6
August '24 Aug '24 3
July '24 Jul '24 6

Number of REFI Loans i

5

(Jun 2025)

-28.6%

year-over-year

y-o-y

June '25 Jun '25 5
May '25 May '25 10
April '25 Apr '25 8
March '25 Mar '25 2
February '25 Feb '25 5
January '25 Jan '25 4
December '24 Dec '24 9
November '24 Nov '24 4
October '24 Oct '24 7
September '24 Sep '24 5
August '24 Aug '24 4
July '24 Jul '24 3

Number of HELOC Loans i

June '25 Jun '25 N/A
May '25 May '25 1
April '25 Apr '25 2
March '25 Mar '25 1
February '25 Feb '25 N/A
January '25 Jan '25 3
December '24 Dec '24 4
November '24 Nov '24 4
October '24 Oct '24 1
September '24 Sep '24 6
August '24 Aug '24 4
July '24 Jul '24 1

Sister Bay, WI 54234 Real Estate Market Overview

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