




4 Windmill Hill Road, Dublin, NH, 03444
About This Home
One of New England’s most storied estates—now offered under $8M—Knollwood represents a rare and compelling opportunity to acquire a legacy property at a fraction of its replacement cost and on 100+ acres. Built in 1900 by Franklin MacVeagh, U.S. Secretary of the Treasury, and later owned by Ernest Henderson, founder of Sheraton Hotels, the estate has had only two owners in 124 years. From 1910–1913, President William Howard Taft used Knollwood as his occasional Summer White House, while Mark Twain spent weeks here reading Huckleberry Finn to guests... Set atop a ridge of Mount Monadnock with sweeping 40-mile views, the property spans 100+ acres of gardens, forests, and vineyard—an increasingly rare offering in the Northeast. The 14,500+ sq ft Georgian residence includes 13 bedrooms, 9.5 baths, a 26-seat dining room, library, terraces, and a 120-person ballroom. Additional structures include a heated 3-car garage with apartment above and a historic barn... In addition to its appeal as a one-of-a-kind grand residential estate, Knollwood’s scale, layout, and global narrative position it for luxury retreats, weddings, or boutique hospitality ventures (subject to approvals)—offering a significantly lower basis than comparable New England opportunities. Located less than 2 hours from Boston and ~20 minutes from a private jet airport, this is a rare opportunity to acquire, reposition, and create a destination asset of lasting significance.
Getting Around
Schools
Construction
Condition
- Year built: 1900
Materials
- Foundation: Concrete,Fieldstone
- Roof: Asphalt Shingle
- Construction materials: Shingle Siding,Wood Siding
Type & Style
- Home type: SingleFamily
- Architectural style: Georgian
- Property subType: Single Family Residence
Interior
Basement
- Has basement: Yes
- Basement: Partial,Interior Entry
Bedrooms & Bathrooms
- Bedrooms: 13
- Bathrooms: 10
- Full bathrooms: 9
- 1/2 bathrooms: 1
Features
- Flooring: Hardwood
- Finished area below ground: 0
- Finished area above ground: 14,546
Heating & Cooling
- Heating features: Oil,Forced Air
- Cooling features: Wall Unit(s)
Interior Area
- Total structure area: 14,546
- Total interior livable area: 14,546 sqft
Property
Details
- Parcel number: DUBLM00003B000001L000000
- Zoning description: Rural
Features
- Levels: 3
- Stories: 3
- Has view: Yes
- View description: Mountain(s)
Lot
- Lot size: 104 Acres
- Features: Country Setting,Landscaped,Views,Mountain,Rural
Parking
- Total spaces: 21
- Parking features: Gravel,Heated Garage,Deeded,Driveway,Parking Spaces 21+,Detached
- Has garage: Yes
- Attached garage spaces: 6
- Covered spaces: 6
- Has uncovered spaces: Yes
Climate Risk is Financial Risk
Every home has a financial story beyond the listing price. Below, you’ll see the climate risks that could affect this property — and in Bills & Affordability, how those risks may influence repairs, insurance, utilities, and long-term value.
Biggest Threats for This Home
- Ice Storm
- Lightning
- Winter Weather
How This Home’s Risks Compare
FEMA Declared Disasters Across New Hampshire Counties
Understanding the Costs
Financial advisors generally recommend spending no more than 30% of your gross household income on housing costs. In practice, many households stretch to 35% or beyond — especially in high-cost markets.
Estimated Costs Today
| Monthly | Annual | |
|---|---|---|
| Mortgage | $30,334 | $364,008 |
| Home Insurance | $2,546 | $30,552 |
| Property Taxes | $8,884 | $106,608 |
| Electricity | $2,130 | $25,562 |
| Total | $43,894 | $526,728 |
Income You'd Need if You Spent...
How Costs Could Change Over Time
Climate risk is quickly impacting all of the major home ownership costs. Adjust the growth rates and percentage of income spent on housing below to see how your housing costs could change over the next 10 years — and what income you'd need to keep up.
Comparing Against the Market
Price Per Sq Ft
vs Other Active Listings
Avg $/sqft
vs Homes Sold Last Month
Median $/sqft
Current Market Trends
Median Price Per Square Foot
The median price per square foot of homes sold in this area each month. Compare this to this listing's price per square foot to gauge whether the home is priced in line with recent sales.
Historicals for This Listing
Zestimate History ($/sqft)
No zestimate history available
Price History
| Date | Event | Price |
|---|---|---|
| 2026-03-24 | Price change | $7,500,000 |
| 2025-10-13 | Price change | $9,999,000 |
| 2025-09-09 | Listed for sale | $15,000,000 |
