Single Family Residence at 230 Big Barndoor Island, Alton
Single Family Residence at 230 Big Barndoor Island, Alton, photo 2 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 3 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 4 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 5 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 6 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 7 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 8 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 9 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 10 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 11 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 12 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 13 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 14 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 15 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 16 of 56
Virtually Enhanced - 230 Big Barndoor Island, Alton
Single Family Residence at 230 Big Barndoor Island, Alton, photo 18 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 19 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 20 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 21 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 22 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 23 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 24 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 25 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 26 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 27 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 28 of 56
Virtually Enhanced - 230 Big Barndoor Island, Alton
Single Family Residence at 230 Big Barndoor Island, Alton, photo 30 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 31 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 32 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 33 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 34 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 35 of 56
Virtually Enhanced - 230 Big Barndoor Island, Alton
Single Family Residence at 230 Big Barndoor Island, Alton, photo 37 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 38 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 39 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 40 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 41 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 42 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 43 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 44 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 45 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 46 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 47 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 48 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 49 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 50 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 51 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 52 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 53 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 54 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 55 of 56
Single Family Residence at 230 Big Barndoor Island, Alton, photo 56 of 56
56 photos

$1,390,000

230 Big Barndoor Island
Alton, NH 03810
Listed by Adam Dow · KW Coastal and Lakes & Mountains Realty/Wolfeboro
Bedrooms
3
Bathrooms
N/A
Living area
N/A
Year built
1970

About this home

Welcome to Loon Squire, an exceptional island retreat on Lake Winnipesaukee offering the perfect balance of peaceful solitude and downtown Wolfeboro convenience. Just five minutes after casting off from the town docks, you’ll arrive at this luxuriously renovated gambrel-style home, where island living meets effortless accessibility to local dining, shopping, and entertainment. Thoughtfully redesigned from top to bottom, the warm interior blends classic lake house charm with modern refinement. Post-and-beam construction framing solid pine tongue-and-groove paneling creates an inviting atmosphere, centered around a cozy stone wood-burning fireplace for summer evenings or crisp autumn days. The spacious custom kitchen flows seamlessly toward an expansive front deck and screened porch. Two main-floor bedrooms feature natural light, ample closets, and an updated bath with a tiled shower. Beautiful hickory railings guide you upstairs to the expansive loft and the primary suite, complete with soaring pine ceilings, sweeping lake views, and an ensuite bath featuring a custom hickory vanity and custom tile work. Outside, the level front lawn offers an idyllic backdrop for gatherings and lawn games. Step onto the solid crib dock, with space for three boats, or relax on the perched beach with your toes in the water. Wild blueberry bushes dot the hundred feet of shoreline, which is situated on the calm side of Barndoor Island. From summer days spent exploring interior island walking trails and neighboring islands by paddleboard, to watching the 4th of July Wolfeboro fireworks directly from your dock, Loon Squire delivers a classic lake experience. Additional features: mini-split heating and a/c units, brand-new kitchen appliances and custom cabinetry, perched beach, and deep-water space for multiple craft, fiberoptic high speed internet. Seller is offering an opportunity to purchase mainland docking in Wolfeboro separately. Seller willing to include 5 hours of barge services!

Highlights

Waterfront

Property details

MLS #
5100735
Property type
Single Family Residence
Subdivision
N/A
Status
Active
Days on market
23
On market date
N/A
Stories
N/A
Total bathrooms
N/A
Garage spaces
N/A
Parking spaces
N/A
Lot size
0.79 acres
Loading map…

Nearby schools

Within 10 miles. School directory data from the National Center for Education Statistics (NCES), accessed via the Urban Institute Education Data API. Local Score is calculated by INNOVATE Real Estate; where a state rating is shown, it comes from that state's own official school report card (e.g. NC Dept. of Public Instruction, SC Report Card).

Elementary
Carpenter Elementary School
2.12 mi away · Grades 0-3
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
200
Student:teacher ratio
8.7:1
District
Governor Wentworth Reg School District
Middle
Kingswood Regional Middle School
2.13 mi away · Grades 7-8
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
375
Student:teacher ratio
10.4:1
District
Governor Wentworth Reg School District
High
Kingswood Regional High School
2.06 mi away · Grades 9-12
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
728
Student:teacher ratio
11.6:1
District
Governor Wentworth Reg School District

Walkability

Blended score for Alton's center, calculated by INNOVATE Real Estate from two sources: the EPA's National Walkability Index (street network, transit, land-use mix) and Google Places amenity data (what's actually reachable on foot from this point). 60% EPA National Walkability Index + 40% nearby-amenity density (Google Places).

24
Car-dependent
out of 100
EPA National Walkability Index
7.8 / 20 -- Below average walkable
Google Places amenity density
0 / 100
Restaurants & cafes0
Grocery stores0
Parks0
Schools0
Transit stops0
Pharmacies0

Market position

How this listing compares to current activity in Alton, from live MLS data.

On the market 23 days -- 86 fewer days than Alton's current average of 109 days.
For reference, the median list price across 104 active listings in Alton right now is $599,000.

Mortgage calculator

Estimate only - actual rate and payment depend on your lender, credit, and loan program.

$
%
%
Adjust tax / insurance estimates
% / yr
$
/mo
Est. monthly payment
$8,521/mo
$278,000 down
$1,112,000 loan
Principal & interest$7,212
Property tax (est.)$1,158
Home insurance (est.)$150

Similar homes you might like

Prime MLS logo

Copyright 2026 PrimeMLS. All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this Site comes in part from the IDX Program of PrimeMLS. The information being provided is 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 08/06/26.