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Alton Bay, NH Real Estate & Property Data

Alton Bay Real Estate Market Trends

Last Updated: October 04, 2025

Accurate and comprehensive real estate data is critical for insight into Alton Bay, NH 03810. ATTOM’s Alton Bay real estate data is updated daily, and current market trends show that in Alton Bay, NH a total of 66 residential properties have sold over the past year. With a median home price of $1,946,600 in Alton Bay. Get detailed property data for Alton Bay, NH instantly. ATTOM is your one-stop-shop for the Alton Bay property reports and real estate data you need in Alton Bay, NH.

Alton Bay Real Estate Market Trends

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Total Residential Properties 2,140

Total Commercial Properties 43

Avg. Home Age (Single Family Home) 43 Years

Avg. Square Feet (Single Family Home) 1,906

Total 2025 Residential Sales (year-to-date) 28

% of Homes Seriously Underwater (Q4 2025) 0.56%

Total 2024 Residential Sales 63

% of Equity Rich Homes (Q4 2025) 39.65%

Effective 2024 Property Tax 0.67%

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

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Alton Bay, NH 03810 Real Estate Overview

There were 66 residential properties sold in the past year in Alton Bay, NH 03810. The median home value in Alton Bay, NH 03810 is $728,930. There are a total of 2,140 residential properties in the 03810.

Median Sales Price i

$1,946,600

(Jul 2025)

+64.9%

year-over-year

y-o-y

July '25 Jul '25 $1,946,600
June '25 Jun '25 $565,000
May '25 May '25 $450,000
April '25 Apr '25 $353,750
March '25 Mar '25 N/A
February '25 Feb '25 N/A
January '25 Jan '25 N/A
December '24 Dec '24 $600,000
November '24 Nov '24 $826,000
October '24 Oct '24 $456,000
September '24 Sep '24 $735,000
August '24 Aug '24 $730,000

Median Down Payment i

$496,750

(Jul 2025)

-24.6%

year-over-year

y-o-y

July '25 Jul '25 $496,750
June '25 Jun '25 $130,000
May '25 May '25 $135,000
April '25 Apr '25 $26,250
March '25 Mar '25 N/A
February '25 Feb '25 N/A
January '25 Jan '25 N/A
December '24 Dec '24 N/A
November '24 Nov '24 $435,000
October '24 Oct '24 $200,000
September '24 Sep '24 $151,000
August '24 Aug '24 $168,000

Number of Homes Sold i

4

(Jul 2025)

-20%

year-over-year

y-o-y

July '25 Jul '25 4
June '25 Jun '25 6
May '25 May '25 9
April '25 Apr '25 3
March '25 Mar '25 4
February '25 Feb '25 N/A
January '25 Jan '25 2
December '24 Dec '24 5
November '24 Nov '24 7
October '24 Oct '24 9
September '24 Sep '24 4
August '24 Aug '24 8

Number of Purchase Loans i

2

(Jul 2025)

year-over-year

y-o-y

July '25 Jul '25 2
June '25 Jun '25 5
May '25 May '25 1
April '25 Apr '25 2
March '25 Mar '25 N/A
February '25 Feb '25 N/A
January '25 Jan '25 N/A
December '24 Dec '24 1
November '24 Nov '24 5
October '24 Oct '24 3
September '24 Sep '24 1
August '24 Aug '24 5

Number of REFI Loans i

6

(Jul 2025)

+20%

year-over-year

y-o-y

July '25 Jul '25 6
June '25 Jun '25 7
May '25 May '25 9
April '25 Apr '25 5
March '25 Mar '25 3
February '25 Feb '25 3
January '25 Jan '25 2
December '24 Dec '24 1
November '24 Nov '24 1
October '24 Oct '24 1
September '24 Sep '24 4
August '24 Aug '24 2

Number of HELOC Loans i

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

Alton Bay, NH 03810 Real Estate Market Overview

Last 30 days

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Street

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Alton Bay, NH 03810 Foreclosure Activity

Total Foreclosure Filings i

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

Foreclosure Starts i

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

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