$15,000,000

4 Windmill Hill Rd Dublin, NH 03444

Estimated payment $86,441/month

Total Views 1,050
13 Beds
9.5 Baths
14,546 Sq Ft
$1,031 Price per Sq Ft

Highlights

  • Hot Property
  • Mountain View
  • Wood Flooring
  • 104 Acre Lot
  • Georgian Architecture
  • 6 Car Detached Garage

About This Home

Knollwood is a once-in-a-century opportunity to own one of America’s most storied private estates—a living chapter of U.S. history. Built in 1900 by Franklin MacVeagh, U.S. Secretary of the Treasury, and later acquired by Ernest Henderson, founder of Sheraton Hotels, Knollwood has had only 2 owners in its 124-year history. From 1910 to 1913, President William Howard Taft occasionally used it as his Summer White House, hosting political summits, dignitaries and gatherings that shaped the nation. In the same era, Mark Twain spent weeks here, reading Huckleberry Finn to guests in its grand rooms. Over the decades, nearly every major political figure has walked its halls, cementing its status as a destination for power, influence, & culture. Perched atop a ridge of Mount Monadnock, the estate commands sweeping 40-mile views over 100 acres of gardens, forests, & a boutique vineyard. The Georgian-style, museum-like residence offers 14,500+ sqft with 13 beds, 9.5 baths, a 26-seat dining room, library, terraces, & a grand ballroom seating 120. Additional structures include a 3-car garage with apartment above and a historic 3-stall barn. Purpose-built for grand entertaining & large-scale gatherings, Knollwood is ideally suited for luxury retreats, weddings, philanthropic galas, & boutique hospitality. Listed on the U.S. National Register of Historic Places, Knollwood is more than a residence—it is a cultural landmark, a legacy property & an irreplaceable piece of American heritage.

Listing Agent

Sean Bakhtiari

Compass New England, LLC Listed on: 09/03/2025

Compass New England, LLC

Co-Listing Agent

Colby Coppage

Compass New England, LLC License #081977

Home Details

Home Type

  • Single Family

Est. Annual Taxes

  • $64,110

Year Built

  • Built in 1900

Lot Details

  • 104 Acre Lot
  • Property fronts a private road
  • Property is zoned Rural

Parking

  • 6 Car Detached Garage
  • Heated Garage
  • Gravel Driveway
  • Deeded Parking

Home Design

  • Georgian Architecture
  • Concrete Foundation
  • Wood Siding
  • Shingle Siding

Interior Spaces

  • 14,546 Sq Ft Home
  • Property has 3 Levels
  • Wood Flooring
  • Mountain Views
  • Basement
  • Interior Basement Entry

Bedrooms and Bathrooms

  • 13 Bedrooms

Utilities

  • Forced Air Heating System
  • Private Water Source
  • Cable TV Available

Listing and Financial Details

  • Tax Block 1
  • Assessor Parcel Number 3

Home Details

Home Type

Single Family

Est. Annual Taxes

$64,110

Year Built

Built in 1900

Lot Details

0

Parking

6

Listing Details

  • Directions: Rout 101 to Church Road to Upper Jaffrey Road to Windmill Hill Road
  • Seasonal: No
  • Property Type: Residential
  • Year Built: 1900
  • Display On Internet: Fiber Optic Internet
  • Architectural Style: Georgian
  • ResoLotFeatures: Country Setting, Landscaped, Mountain View, Views, Mountain, Rural
  • Road Frontage Type: Public
  • PropertySubType: Single Family Residence
  • Co List Office Mls Id: 3628-01
  • MLS Status: (10) Active - Active
  • Above Grade Finished Sq Ft: 14546.0
  • Unit Levels: 3
  • ResoPropertyCondition: Existing
  • Flood_Zone: No
  • Foreclosed_Or_Bank_Owned_Or_REO: No
  • Mobile_Home: No
  • Pre_Construction: No
  • Basement_Access_Type: Interior
  • Special Features: None
  • Property Sub Type: Detached

Interior Features

  • Total Bedrooms: 13
  • Flooring: Hardwood
  • Basement: Partial
  • Basement YN: Yes
  • Full Bathrooms: 9
  • Half Bathrooms: 1

Exterior Features

  • Driveway: Gravel
  • Roof: Asphalt Shingle
  • Construction Type: Shingle Siding, Wood Siding
  • Foundation Details: Concrete, Fieldstone

Garage/Parking

  • Garage Spaces: 6.0
  • Attached Garage: Yes
  • Parking Features: Heated Garage, Deeded, Driveway, Parking Spaces 21+, Detached

Utilities

  • Electric: 200+ Amp Service
  • Sewer: Private Sewer
  • Heating: Oil, Forced Air
  • Cooling: Wall Unit(s)
  • Utilities: Cable, Propane
  • Water Source: Private

Lot Info

  • Surveyed: Unknown
  • Zoning: Rural
  • Lot Size Acres: 104.0
  • Lot Size Sq Ft: 4530240.0

Tax Info

  • Tax Year: 2024
  • Tax Annual Amount: 64110.0
  • Tax Block: 1
  • Tax Lot: 0
  • Tax Map Number: 3

Map

Range of Values:

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Average Value
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List Price
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Home Values in the Area

Source: Public Records

Average Home Value in this Area





Source: Public Records

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2024 $60,735 $3,376,027 $587,127 $2,788,900
2023 $52,270 $1,889,064 $397,064 $1,492,000
2022 $47,183 $1,889,570 $397,570 $1,492,000
2021 $44,261 $1,889,893 $397,893 $1,492,000
2020 $271 $1,865,919 $397,919 $1,468,000
2019 $6,491 $1,865,799 $397,799 $1,468,000
2018 $0 $1,580,453 $356,653 $1,223,800
2017 $4,235 $1,580,607 $356,807 $1,223,800
2016 $1,231 $1,797,900 $574,100 $1,223,800
2015 $47,644 $1,797,900 $574,100 $1,223,800
2014 $47,752 $1,797,900 $574,100 $1,223,800
2013 $37,027 $1,566,300 $459,000 $1,107,300
Source: Public Records

Property History

Date Event Price Change Sq Ft Price
09/03/2025 09/03/25 For Sale $15,000,000 -- $1,031 / Sq Ft
Source: PrimeMLS

Source: PrimeMLS

MLS Number: 5059572

PrimeMLS

APN: DUBL-000003-000001