* Open House Saturday 5/9 from 10am to Noon!! * White Mountains Contemporary Luxury 5 Bedroom, 3 Bathroom Home With Separate 1BR, 1.5 BA In-Law Apartment. With an Exceptional Short Term Rental History, and approximately 5,000 square feet of high-end features and finishes, including a chef's kitchen, maple walls, a wet bar, stone fireplace, in-ceiling multi-room audio speakers, Bose-powered TV room, study area, and an extensive wrap-around steel deck, this home excels at entertaining and is in a great central location to access skiing, hiking, fishing, boating, and everything the White Mountains and neighboring Lakes Region have to offer. In addition to the successful short-term rental history, there is a basement level 1BR and 1.5 BA In-Law Apartment with separate, ground level entrances. Featured in the Boston Globe for its unique architectural design for its use of triangles in almost every room, this is a must-see house. There is an attached 3 car with plenty of room to store all of your toys. Recent improvements include the replacement of the septic system with a six bedroom state approved system, and the expansion of the in-law apartment to include the new playroom. The home is being sold furnished, and fiber-optic internet is available as well. Due to the busy rental schedule, select showings by appointment only.
Luxury 4 Bedroom, 4.5 Bathroom Contemporary Vacation Home in the White Mountains. Approximately 3,600 square feet above-ground with high-end features and finishes, including a chef's kitchen with AGA stove and range, cork flooring, maple walls, a wet bar, a stone fireplace, in-ceiling multi-room audio speakers, Bose-powered TV room, study area, and an extensive wrap-around steel deck. This house excels at entertaining and is in a great central location to access skiing, hiking, fishing, boating, and everything the White Mountains and neighboring Lakes Region have to offer. In addition to the successful short-term rental history, there is a basement level 1BR and 1 BA ADU with a long-term month-to-month tenant, producing an impressive combined gross rental income of $148,000. Featured in the Boston Globe for its unique architectural design for its use of triangles in almost every room, this is a must-see house. There is an attached 3 car with plenty of room to store all of your toys, plus a workshop or gym with a 1/2 bath in the basement. Fiber-optic internet is available as well.
PrimeMLS #4733079
Nov 5, 2019
Sold
$420,000
$87/sq ft
Sep 5, 2019
Contingent
—
Aug 22, 2019
Relisted
—
Jul 31, 2019
Contingent
—
Jun 10, 2019
Price Changed
$439,700
$91/sq ft
Jan 15, 2019
Listed
$449,700
$93/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$10,997 (+3.3%)
$126,900 + $809,800
$936,700
2024
$10,650 (+3.1%)
$126,900 + $809,800
$936,700
2023
$10,330 (+7.4%)
$73,600 + $424,000
$497,600
2022
$9,617 (−3.7%)
$73,600 + $407,000
$480,600
2021
$9,982 (+3.3%)
$73,600 + $407,000
$480,600
2020
$9,665 (+19.9%)
$73,600 + $407,000
$480,600
2019
$8,062 (+23.0%)
$73,600 + $358,000
$431,600
2018
$6,556 (+4.8%)
$54,700 + $265,400
$320,100
2017
$6,255 (+0.8%)
$54,700 + $265,400
$320,100
2016
$6,207 (+4.0%)
$54,700 + $265,400
$320,100
2015
$5,969 (+1.7%)
$54,700 + $257,800
$312,500
2014
$5,872 (+7.2%)
$54,700 + $257,800
$312,500
2013
$5,478
$44,900 + $253,800
$298,700
Public record
Beds
4
Baths
4.5
Stories
2
Lot width
—
Lot depth
—
Lot size
1.5 Acres
Year renovated
—
Finished Sq. Ft.
4,539
Unfinished Sq. Ft.
—
Total Sq. Ft.
4,539
Year built
1972
Style
Single Family Residential
County
Grafton County
APN
593400
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Aug 5, 2026.
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
2/10 Heat Factor
7 days above 89° expected this year, 16 days in 30 years
3/10 Wind Factor
5% chance of strong winds in next 30 years
1/10 Air Factor
0 unhealthy days expected this year, 0 days in 30 years
Provided by First Street
Historical weather
Thornton, NH • 03285
Average low and high temperatures (°F)
24
8
27
9
41
22
53
33
62
43
74
53
78
58
75
54
71
48
58
37
42
29
29
13
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
84/ 100
Very good sunlight
Sunscore
There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
8.8 hrs
5.2 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 18 Treeline Rd
$966,566
$28K under list price of $995K
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $479K to $1.1M.