Listed by Maxfield Real Estate/Wolfeboro · Jen McCullough · 603-569-3128
Single Family Residence · Alton, NH
348 Big Barndoor Island, Alton, NH
$1,499,000
$1,549,000 · changed Sep 12, 2026
Est. $7,580/mo · 20% down, 30-yr, 6.5% (Owl’s Nest Real Estate estimate, not MLS data)
- Beds
- 4
- Baths
- 3
- Sq Ft
- 1,935
- Built
- 1981
- MLS®
- #5102949
Property Description
348 Big Barndoor Island brings a single-family home to the Alton market at $1,499,000. Inside you'll find 4 bedrooms, 3 bathrooms and 1,935 square feet of living space. Homes like this trade on the fundamentals: space, privacy and a New Hampshire address that works year-round. Also on the sheet: a 0.77-acre lot, 1981 construction and roughly $775 per square foot. The full photo gallery, live pricing and every MLS detail for 348 Big Barndoor Island follow below. Browse more homes for sale in Alton.
Big Barndoor Island on Lake Winnipesaukee!! This exceptional furnished property offers exclusive privacy, sweeping views, and a truly unique 180’ of waterfront. The docking system is comprised of 2 u-shape docks with docking for 3 boats. Additional docking for lounging, enjoying all-day sun and sandy bottom swimming. A walkway brings you to a small beach, a lagoon with 2 islands, and prolific blueberry and huckleberry bushes. The private home has expansive new solid vinyl decking, with areas to barbecue, dine, enjoying the views and listen to the loons. Stepping inside, you’ll see nothing has been spared from functionality to the "American Cottage" furnishings. The first floor consists of an open kitchen and dining, a great room boasting a cathedral ceiling, floor to ceiling windows with views to the lake, a magnificent fireplace with a woodstove insert, a three-quarter bath, office and pantry, and a spacious screen porch used for dining and game night, which opens to the deck. Upstairs are 4 spacious bedrooms, each with individual climate control and a closet. There are two bathrooms and two sitting areas. The entire home is immaculate and shows decades of love and care. Just steps out the back door is a storage and workshop building, completely organized. Also in the back, is immediate access to the interior island path for walking, running or taking a casual stroll. You can do almost everything by boat on Lake Winnipesaukee, and from Big Barndoor Island, it’s only a 5-minute boat ride into Wolfeboro for shopping, dining, groceries, that quick trip to the hardware store or the nightly ice cream. A slow ride back to the island will have you relaxing on the dock to gaze at the full moon, or the 4th of July fireworks. This island property has everything you could possibly want. The property also includes a guaranteed boatslip at the Wolfeboro Corinthian Yacht Club, subject to club requirements and the applicable purchase and membership fees.
Location Highlights
348 Big Barndoor Island is a single family residence in Alton, New Hampshire, listed at $1,499,000. That works out to about $775 per square foot, for a home built in 1981. It has been on the market for 3 months.
From here it is 26.7 miles to Downtown Plymouth / Main Street and 30.4 miles to Owl's Nest Resort. At this latitude, Alton averages roughly 8.4 hours of sun a day in June and 3.6 in December.
Zoned schools in the Alton School District SAU #72: Alton Central School (Elementary), Alton Central School (Middle), ProspectMo (High). Always confirm zoning with the district office.
Source: zoned school names are PrimeMLS listing data; distances, sun exposure and school facts are Owl’s Nest Real Estate additions (school facts from the NCES, U.S. Department of Education) — not PrimeMLS data.
Property Details
Essentials & finishes
- Bedrooms
- 4
- Total Baths
- 3
- Full Baths
- 2
- SqFt
- 1,935
- Price / SqFt
- $774.68
- Property Type
- Single Family Residence
- Year Built
- 1981
- County
- NH-Belknap
- Town
- Alton, NH
- Status
- Active
- Days on Market
- 79
Primary Features
- County
- NH-Belknap
- Property Type
- Residential
- Year Built
- 1981
- Zoning
- LR-LAK
Interior Features
- Appliances
- Dishwasher, Disposal, Dryer, Electric Water Heater, Exhaust Fan, Freezer, Microwave, Refrigerator, Electric Stove, Washer
- Basement
- No
- 1/4 Baths
- 0
- 3/4 Baths
- 1
- Cooling
- Mini Split
- Electric
- 200+ Amp Service, Circuit Breakers
- Flooring
- Carpet, Vinyl Plank
- Heating
- Baseboard, Electric, Mini Split, Wood, Wood Stove
- Interior Features
- Blinds, Ceiling Fan(s), 1 Fireplace, Furnished, Hearth, Kitchen/Dining, Living/Dining, Natural Light, Natural Woodwork, Vaulted Ceiling(s), Wood Stove Insert, 1st Floor Laundry
- Rooms - Total
- 8
- SqFt-Approximate Finished Above Grade
- 1,935
- SqFt-Approximate Finished Below Grade
- 0
- SqFt Approximate Total Finished
- 1,935
- SqFt Approximate Total
- 1,935
Location Information
- School - District
- Alton School District SAU #72
- School - Elementary
- Alton Central School
- School - High
- ProspectMo
- School - Middle/Jr
- Alton Central School
Financial Details
- Tax - Gross Amount
- $8,726
- Tax Year
- 2024
- Taxes TBD
- No
Additional
- Construction Status
- Existing
- Construction
- Clapboard, T1-11 Exterior, Wood Exterior
- Covenants
- Yes
- Flood Zone
- Unknown
- Pre-Construction
- No
- Property Sub Type
- Single Family Residence
- Seasonal
- Yes
- Total Stories
- Two
- Surveyed
- Unknown
- Timeshare/Fractional Ownership
- No
- Water Access Details
- Beach Access, Deep Water Access, Directly Adjoining, Dock Access, Seasonal Access Only
External Features
- Driveway
- None
- Exterior Features
- Boat Slip, Deck, Dock, Natural Shade, Outbuilding, Screened Porch, Private Dock, Window Screens
- Foundation
- Post/Piers
- Garage
- No
- Lot Features
- Level, Mountain View, Trail/Near Trail, Views, Walking Trails, Island, Private
- Lot - Acres
- 0.77
- Lot - SqFt
- 33,541
- Road Frontage Type
- None
- Road Frontage
- No
- Roof
- Asphalt Shingle
- Sewer
- Leach Field On-Site, Private, On-Site Septic Exists, Septic Tank
- Utilities
- Cable at Site
- Water Source
- Other
- Water Body Type
- Lake
MLS®: PrimeMLS #5102949; Listed by Maxfield Real Estate/Wolfeboro · Jen McCullough · 603-569-3128
Property History
Estimated annual taxes for this property
- 2024
- $25,483
- 2023
- $24,846
- 2022
- $24,209
Source: Owl’s Nest Real Estate estimate from the list price at New Hampshire’s average effective tax rate — not PrimeMLS or town assessor data. Verify with the town assessor.
Market Data
Live snapshot computed by Owl’s Nest Real Estate from PrimeMLS IDX active listings in this town
- Active listings in Alton
- 96
- Average list price
- $551,462
- Price range
- $200,000 – $1,199,000
Mortgage Calculator
Estimate your monthly payment for this home
Estimated Monthly Payment
$10,016/ mo
- Principal & Interest
- $7,580
- Property Tax
- $2,124
- Home Insurance
- $312
Source: Owl’s Nest Real Estate estimate, not PrimeMLS data. Estimates use typical New Hampshire costs — a 1.7% effective property-tax rate, insurance at 0.25% of home value/yr, and PMI below 20% down. Actual town tax rates vary; verify with your lender and the town assessor.
Around This Property
Schools, everyday places and nearby destinations near 348 Big Barndoor Island, Alton, NH
Assigned Schools
- Elementary
- Alton Central School
- Middle
- Alton Central School
- High School
- ProspectMo
- District
- Alton School District SAU #72
Source: Google Maps Platform (Places) and Owl’s Nest Real Estate — not PrimeMLS data.
Questions About This Listing
How big is 348 Big Barndoor Island?
348 Big Barndoor Island in Alton, NH has 4 bedrooms and 3 bathrooms (2 full and 1 three-quarter) in 1,935 square feet of finished living space.
What is the asking price of 348 Big Barndoor Island?
348 Big Barndoor Island in Alton, NH is listed for $1,499,000 on PrimeMLS.
That is about $775 per square foot of finished living space.
It came on the market on August 2, 2026.
What schools serve 348 Big Barndoor Island?
The MLS places 348 Big Barndoor Island in Alton, NH in the Alton School District SAU #72.
Listed schools: Alton Central School (elementary), Alton Central School (middle) and ProspectMo (high).
School assignments can change; confirm with the district.
Is 348 Big Barndoor Island still available?
Yes. 348 Big Barndoor Island in Alton, NH is listed as Active on PrimeMLS (MLS #5102949).
Status can change quickly; contact us to confirm availability before you visit.
Who is the listing agent for 348 Big Barndoor Island?
348 Big Barndoor Island in Alton, NH is listed by Jen McCullough of Maxfield Real Estate/Wolfeboro (603-569-3128).
Owl's Nest Real Estate shows it through the PrimeMLS IDX feed; we are not the listing brokerage.
What kind of property is 348 Big Barndoor Island?
348 Big Barndoor Island in Alton, NH is a single-family home built in 1981.
The MLS lists its style as Contemporary, with two stories.
The MLS marks it as a seasonal property, so check year-round access and systems.
Where is 348 Big Barndoor Island located?
348 Big Barndoor Island is in Alton, New Hampshire 03810, in Belknap County.
Location notes from the MLS: trail/near trail and walking trails.
Our Lake Winnipesaukee guide covers Alton and the surrounding towns.
How much land comes with 348 Big Barndoor Island?
348 Big Barndoor Island in Alton, NH sits on 0.77 acres, per the MLS.
The lot is described as level, island and private.
Zoning: LR-LAK.
The MLS notes covenants; review them in the deed and title work.
How much are the property taxes on 348 Big Barndoor Island?
Annual property taxes on 348 Big Barndoor Island in Alton, NH are $8,726 for the 2024 tax year, per the MLS.
New Hampshire towns set their own tax rates and revalue periodically, so confirm the current bill with the Alton assessing office.
How is 348 Big Barndoor Island heated?
348 Big Barndoor Island in Alton, NH is heated by baseboard, electric, mini split, wood and wood stove, per the MLS.
Cooling: mini split.
Does 348 Big Barndoor Island have town water and sewer?
348 Big Barndoor Island in Alton, NH has a private septic system, per the MLS.
MLS details — sewer: leach field on-site, private, on-site septic exists and septic tank.
Electric: 200+ amp service and circuit breakers.
Other utilities: cable at site.
Plan a water test and septic inspection during your inspection period.
Is there a basement at 348 Big Barndoor Island?
No. The MLS lists no basement at 348 Big Barndoor Island in Alton, NH.
What features does 348 Big Barndoor Island have?
Inside, the MLS lists these features at 348 Big Barndoor Island in Alton, NH: blinds, ceiling fan(s), 1 fireplace, furnished, hearth, kitchen/dining, living/dining and natural light.
Outside: boat slip, deck, dock, natural shade, outbuilding, screened porch, private dock and window screens.
Flooring: carpet and vinyl plank.
Listed appliances: dishwasher, disposal, dryer, electric water heater, exhaust fan, freezer, microwave, refrigerator, electric stove and washer; confirm which ones convey in the purchase agreement.
Is 348 Big Barndoor Island on the water?
Yes. The MLS lists 348 Big Barndoor Island in Alton, NH as a waterfront property on a lake.
Water access: beach access, deep water access, directly adjoining, dock access and seasonal access only.
The MLS lists a dock and private dock.
The MLS also notes mountain view.
Confirm frontage, shoreland rules and any dock or beach rights during due diligence.
How does the price of 348 Big Barndoor Island compare with other Alton listings?
At $1,499,000, 348 Big Barndoor Island in Alton, NH is priced above the $799,900 median asking price of the 45 single-family homes for sale in Alton on PrimeMLS as of November 3, 2026 (this listing included).
That figure is Owl's Nest Real Estate's analysis of active listings, and asking prices are not sale prices — ask us for recent comparable sales before you make an offer.
How do I schedule a showing of 348 Big Barndoor Island?
To see 348 Big Barndoor Island in Alton, NH, use Request a Showing on this page or call Owl's Nest Real Estate at 401-648-5308.
We can show any MLS-listed home and represent you as your buyer's agent; the listing brokerage represents the seller.
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NOTE: This representation is based in whole or in part on data generated by PrimeMLS, Inc., which assumes no responsibility for its accuracy. The data relating to real estate displayed on this site comes in part from the IDX Program of PrimeMLS.
This listing data is intended for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated 11/03/26.