18 Diamond Island, Gilford, NH 03249 - Photo 1

1/1

$750,000

Sold
Closed
Single Family
2 Beds
1 Partial Bath
748 Sq. Ft.
0.7 Acres

1/1

Property Description

BACKUP OFFERS BEING ACCEPTED. As unique as it gets! This spacious boathouse with living quarters above is located on Diamond Island, Lake Winnipesaukee, offering 146 feet of pristine waterfront and desirable southwest exposure. Step directly from your boat into the expansive boathouse, which provides full protection from the elements. The lower level features a large dock-perfect for sunbathing, relaxing, or taking a swim in the lake's crystal-clear waters. Upstairs, the thoughtfully designed living quarters include a full-size bedroom, kitchen, spacious living/dining area, and a loft. An abundance of windows frame breathtaking panoramic views of the lake, bringing the outdoors in. Just off the living room, an over-the-water deck offers a front-row seat to the lake's ever-changing moods. A second deck at the rear of the boathouse provides additional space ideal for dining, game night, or simply unwinding. A charming nearby bunkhouse adds even more appeal, featuring a large sleeping area and a three-quarter bath. Rich in history, Diamond Island was the site of U.S. Navy underwater experiments in 1947 and is considered a prime spot for diving enthusiasts. Come experience life over the water, with your boat safely housed below, and fall asleep to the soothing sound of the waves.

Full Property Details

Full Property Details for 18 Diamond Is

General

Sold For: $750,000
Taxes: $5,199 (2023)
Status: Closed
Type: Single Family
Source: PrimeMLS
MLS ID: 5040322
Added to Site: 251 day(s) ago

Interior

Number of Rooms: 4
Interior Features: Natural Light, Natural Woodwork, Wood Stove Insert
Appliances: Gas Range, Refrigerator
Flooring: Vinyl Plank

Rooms

Bathrooms

Total Bathrooms: 1
3/4 Bathrooms: 1

Bedrooms

Total Bedrooms: 2
Bedroom 1: Level 1

Other Rooms

Living Room: Level 2
Kitchen: Kitchen, Level 2
Loft: Level 3

Exterior

Exterior Features: Boat Slip/Dock, Boat House, Covered Slip, Deck, Guesthouse, Private Dock
Color: green

Location

County: Belknap
Driving Directions: West side of Diamond Island. Property is on a non bridged island and only accessible by boat.

School Information

School District: Gilford Sch District SAU #73
Elementary School: Gilford Elementary
Middle School: Gilford Middle
High School: Gilford High School

Heating & Cooling

Cooling Type: None
Heating Type: Wood, Wood Stove

Utilities

Sewer: Other

Structural Information

Construction Status: Existing
Roof: Asphalt Shingles
Stories/Levels: 1
Square Feet: 748
Finished Total: 748 Sq. Ft.
Finished Above Grnd: 748 Sq. Ft.
Year Built: 1950

Lot Features

Lot Size (Acres): 0.7
Lot Size (Sq. Ft.): 30,492
Frontage: No Road Frontage
Driveway/Sidewalk: None
Zoning: IR

Water Features

Water Front: Yes
Water View: Yes
Water Access: Yes
Water Front Type: Lake
Water Front Name: Lake Winnipesaukee
Water Front Owned: 1

Financial Considerations

Price Per Sq. Ft.: $1,068.18
Assessment Year: 2023
Assessment Amount: $504,800
Tax Amount: $5,199.44
Tax Year: 2023

Listed by Maxfield Real Estate/Wolfeboro, Jen McCullough and Betty Ann Bickford
Sold by Maxfield Real Estate/Wolfeboro, Jen. McCullough

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Listed by Maxfield Real Estate/Wolfeboro, Jen McCullough and Betty Ann Bickford
Sold by Maxfield Real Estate/Wolfeboro, Jen. McCullough

Listing agents

— 18 Diamond Is —

Jen McCullough

Maxfield Real Estate/Wolfeboro
Betty Ann Bickford

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Schools

Schools serving 18 Diamond Is

School District:Gilford School District

Name	Grades	Distance
Gilford Elementary School 76 Belknap Mountain Road, Gilford, NH 03249	K-4	3.6 mi
Gilford Middle School 72 Alvah Wilson Road, Gilford, NH 03249	5-8	3.8 mi
Gilford High School 88 Alvah Wilson Road, Gilford, NH 03249	9-12	3.8 mi

Disclaimer: School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 18 Diamond Is

Date

Details

Price

Change

Source

10/06/2025

Sold

$750,000

-6.13%

MLS

8/29/2025

Price Reduced

$799,000

-6%

MLS

5/11/2025

Listed

$850,000

—

MLS

Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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Condo
Active
Updated 10 hours ago

3
Beds
3
Total Baths
2,000
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Updated 2 days ago

2
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0.25
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Updated 5 days ago

3
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Total Baths
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Multi-Family
Active
Updated 1 hour ago

2
Units
0.52
Acres

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Active
Updated 5 days ago

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0.05
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Single Family
Active
Updated 1 day ago

3
Beds
3
Total Baths
1,989
Sq. Ft.

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$899,000

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Single Family
Active
Updated 3 days ago

3
Beds
3
Total Baths
2,028
Sq. Ft.

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Price Reduced

-$4,000 (-1.41%)

$279,000

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Single Family
Active
Updated 5 days ago

3
Beds
1
Total Bath
936
Sq. Ft.

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Sold

$725,000

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Condo
Closed

2
Beds
2
Total Baths
994
Sq. Ft.

Listed by Today Real Estate
Sold by Roche Realty Group

Sold

$758,750

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Single Family
Closed

3
Beds
3
Total Baths
3,573
Sq. Ft.

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Sold by RE/MAX Innovative Properties

Sold

$758,750

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Single Family
Closed

3
Beds
3
Total Baths
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Sold

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Single Family
Closed

3
Beds
3
Total Baths
2,000
Sq. Ft.

Listed by Cheryl Zarella and Associates
Sold by BHHS Verani Meredith

18 Diamond Island, Gilford, NH 03249 (MLS# 5040322) is a Single Family property that was sold at $750,000 on October 06, 2025. Want to learn more about 18 Diamond Island? Do you have questions about finding other Single Family real estate for sale in Gilford? You can browse all Gilford real estate or contact a Coldwell Banker agent to request more information.

18 Diamond Is Gilford, NH 03249