Single Family Residence at 18 Treehouse Way, Barrington
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$1,380,000

Under contract
18 Treehouse Way
Barrington, NH 03825
Listed by Justin Kelcourse · KW Coastal and Lakes & Mountains Realty
Bedrooms
4
Bathrooms
3.5
Living area
N/A
Year built
1977

About this home

New listing offering a rare waterfront retreat — two adjacent waterfront properties being sold together as one conveyance — welcome to 18 & 20 Treehouse Way on Ayers Pond in Barrington. Together, these two single-family homes offer approximately 300’ of waterfront and a unique opportunity for year-round living, multigenerational use, or a cherished seasonal escape. Situated at the end of a private way, this peaceful compound offers privacy, nature, and flexibility. Designed with classic New England boathouse-inspired architecture, the homes embrace waterfront living with expansive glass, natural gathering spaces, and a seamless connection between indoors and out. 20 Treehouse Way is approximately 2,240± SF. The open floor plan is highlighted by a dramatic wall of windows framing water views and filling the home with natural light. Sliders lead out to the wraparound deck and screened porch — ideal for grilling, relaxing, and enjoying the pond. The kitchen flows into the gathering spaces and porch, while the private primary suite, additional bedrooms, and partially finished walkout lower level provide flexibility for guests, recreation, or work-from-home needs. Two lower-level sliders lead toward the dock. 18 Treehouse Way offers approximately 744± SF above a two-car garage. The open-concept layout makes it ideal as a guest house, in-law setup, studio, or private retreat. The dual-home configuration offers exceptional flexibility for extended family, guests, or potential income opportunities. With a private dock, abundant storage, and a backup generator, these lovingly maintained homes are in exceptional condition and truly move-in ready — this is the waterfront property you have been waiting for.

Highlights

Waterfront

Property details

MLS
Prime MLS
MLS #
5091019
Property type
Single Family Residence
Subdivision
N/A
Status
Under contract
Days on market
7
On market date
N/A
Stories
N/A
Total bathrooms
3.5
Garage spaces
2
Parking spaces
N/A
Lot size
1.71 acres
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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.

Elementary
Early Childhood Learning Center
2.84 mi away · Grades -1-0
Nearest school -- attendance-zone data not available here
3.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
157
Student:teacher ratio
15.7:1
District
Barrington School District
Middle
Rochester Middle School
3.56 mi away · Grades 6-8
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
874
Student:teacher ratio
11.1:1
District
Rochester School District
High
Spaulding High School
4.94 mi away · Grades 9-12
Nearest school -- attendance-zone data not available here
4.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
1,326
Student:teacher ratio
12.4:1
District
Rochester School District

Walkability

Blended score for Barrington'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).

20
Very car-dependent
out of 100
EPA National Walkability Index
5.8 / 20 -- Below average walkable
Google Places amenity density
5 / 100
Restaurants & cafes0
Grocery stores0
Parks1
Schools0
Transit stops0
Pharmacies0

Market position

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

On the market 7 days -- 114 fewer days than Barrington's current average of 121 days.
For reference, the median list price across 80 active listings in Barrington right now is $699,900.

Mortgage calculator

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Est. monthly payment
$8,461/mo
$276,000 down
$1,104,000 loan
Principal & interest$7,161
Property tax (est.)$1,150
Home insurance (est.)$150

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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 06/12/26.