$659,000

378 Sleeper Island Alton, NH 03810

Estimated payment $3,924/month

Total Views 186
2 Beds
1 Bath
1,078 Sq Ft
$611 Price per Sq Ft

Highlights

  • Popular Property
  • Private Dock
  • Boat Slip
  • Lake Front
  • Water Access
  • Deck

About This Home

This property sits on the northwest end of Sleeper Island on Lake Winnipesaukee and offers sunsets galore. The quintessential cottage captures everything island living is about—cozy, well cared for, and loaded with waterfront charm. Inside, the open-concept living, dining, and kitchen area features multiple sliders that frame views from every angle. A wood stove provides warmth on chilly evenings and adds ambiance on rainy days. The first-floor primary bedroom has its own access to the full bath, while upstairs a spacious loft offers two private sleeping areas positioned to wake up to island views through a high cathedral window. Walk out the first-floor sliders to one of several multi-tiered decks—perfect for grilling, entertaining, making s’mores, or relaxing with a good book. Down a level, another deck offers direct access to the lake and sandy swimming. From either deck, enjoy long-range views across Lake Winnipesaukee, abundant sunshine, and the most beautiful sunsets. When you’re ready for a break from the waterfront, step out back to the island’s interior trail system, perfect for hiking and spotting wildlife. There’s still plenty of time to enjoy the lake this season and plan your personal touches for next summer.

Listing Agent

Betty Ann Bickford

Maxfield Real Estate/Wolfeboro License #031787 Listed on: 09/25/2025

Co-Listing Agent

Jen McCullough

Maxfield Real Estate/Wolfeboro

Home Details

Home Type

  • Single Family

Est. Annual Taxes

  • $5,154

Year Built

  • Built in 1965

Lot Details

  • 0.55 Acre Lot
  • Lake Front
  • Property is zoned 01-LR LAKESHORE RES

Property Views

  • Lake
  • Mountain

Home Design

  • Cottage

Interior Spaces

  • 1,078 Sq Ft Home
  • Property has 1.25 Levels
  • Blinds
  • Living Room
  • Open Floorplan
  • Carpet
  • Microwave

Bedrooms and Bathrooms

  • 2 Bedrooms
  • 1 Full Bathroom

Laundry

  • Dryer
  • Washer

Outdoor Features

  • Water Access
  • Nearby Water Access
  • Boat Slip
  • Private Dock
  • Lake, Pond or Stream
  • Deck
  • Outdoor Storage

Utilities

  • Air Conditioning
  • The lake is a source of water for the property

Community Details

  • Mooring Area
  • Trails

Listing and Financial Details

  • Tax Lot 33
  • Assessor Parcel Number 73

Home Details

Home Type

Single Family

Est. Annual Taxes

$5,154

Year Built

Built in 1965

Lot Details

0

Listing Details

  • Directions: Located on the northwest side of Sleeper Island. Only accessible by boat.
  • Seasonal: Yes
  • Property Type: Residential
  • Year Built: 1965
  • Display On Internet: High Speed Intrnt Avail
  • Architectural Style: Cottage/Camp
  • ResoLotFeatures: Lake Frontage, Lake View, Mountain View, Trail/Near Trail, Views, Walking Trails, Water View, Island
  • Road Frontage Type: None
  • PropertySubType: Single Family Residence
  • Co List Office Mls Id: 2340-0
  • MLS Status: (10) Active - Active
  • Above Grade Finished Sq Ft: 1078.0
  • Reso Interior Features: Blinds, Kitchen/Dining, Living/Dining, Vaulted Ceiling(s)
  • Unit Levels: 1.25
  • ResoPropertyCondition: Existing
  • Flood_Zone: Unknown
  • Foreclosed_Or_Bank_Owned_Or_REO: No
  • Mobile_Home: No
  • Pre_Construction: No
  • Room_1_Type: Kitchen/Dining
  • Room_2_Type: Living Room
  • Room_4_Type: Bedroom
  • Room_5_Type: Bedroom
  • Room_6_Type: Bathroom Full
  • Water_Body_Access: Yes
  • Water_Body_Type: Lake
  • Water_View: Yes
  • Water_Access_Details: Directly Adjoining
  • Special Features: VirtualTour
  • Property Sub Type: Detached

Interior Features

  • Appliances: Electric Cooktop, Dryer, Microwave, Wall Oven, Refrigerator, Washer
  • Total Bedrooms: 2
  • Flooring: Carpet, Combination
  • Other Equipment: Air Conditioner, Wood Stove
  • Basement YN: No
  • Full Bathrooms: 1

Exterior Features

  • Driveway: None
  • Exterior Features: Boat Mooring, Boat Slip, Deck, Private Dock, Storage
  • Roof: Asphalt Shingle
  • Water Body Name: Lake Winnipesaukee
  • Construction Type: Wood
  • Waterfront: Yes
  • Foundation Details: Post/Piers

Garage/Parking

  • Attached Garage: No

Utilities

  • Electric: 100 Amp Service
  • Sewer: Private Sewer
  • Heating: Electric, Wood Stove
  • Cooling: Wall Unit(s)
  • Utilities: Cable Available
  • Water Source: Lake/Pond

Lot Info

  • Surveyed: Unknown
  • Zoning: 01-LR LAKESHORE RES
  • Lot Size Acres: 0.55
  • Lot Size Sq Ft: 23958.0

Tax Info

  • Tax Year: 2024
  • Tax Annual Amount: 5154.0
  • Tax Block: 0
  • Tax Lot: 33
  • Tax Map Number: 73

Map

Range of Values:

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Home Values in the Area

Source: Public Records

Average Home Value in this Area





Source: Public Records

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2024 $5,154 $397,100 $333,300 $63,800
2022 $4,515 $397,100 $333,300 $63,800
2021 $5,244 $460,800 $397,000 $63,800
2020 $3,999 $286,700 $222,300 $64,400
2019 $3,587 $286,700 $222,300 $64,400
2018 $3,926 $280,600 $222,300 $58,300
2017 $3,609 $280,600 $222,300 $58,300
2016 $2,779 $196,400 $141,100 $55,300
2015 $2,584 $181,100 $125,800 $55,300
2014 $2,432 $175,600 $120,300 $55,300
2013 $2,361 $175,700 $123,500 $52,200
Source: Public Records

Property History

Date Event Price Change Sq Ft Price
09/25/2025 09/25/25 For Sale $659,000 +114.7% $611 / Sq Ft
09/12/2016 09/12/16 Sold $307,000 -5.5% $345 / Sq Ft
08/03/2016 08/03/16 Pending -- -- --
05/28/2016 05/28/16 For Sale $325,000 -- $365 / Sq Ft
Source: PrimeMLS

Purchase History

Date Type Sale Price Title Company
Quit Claim Deed -- None Available
Quit Claim Deed -- None Available
Warranty Deed $307,000 --
Warranty Deed $307,000 --
Warranty Deed -- --
Warranty Deed -- --
Source: Public Records

Mortgage History

Date Status Loan Amount Loan Type
Previous Owner $245,600 New Conventional
Source: Public Records

Source: PrimeMLS

MLS Number: 5062911

PrimeMLS

APN: ALTN-000073-000000-000033