Half Moon Farm delivers an idyllic Hudson Valley escape just one hour from Manhattan. Set on over three serene acres, this meticulously updated 19th-century farmhouse seamlessly connects historic authenticity with modern luxury for buyers seeking a private country retreat or turnkey farm property.
Originally built in the early 1800s, the historically registered three-bedroom, two-bathroom residence features restored original wood floors, light-filled interiors, and classic architectural proportions. A welcoming entry opens to a sunlit living room with a wood-burning fireplace, custom built-ins, and a quiet reading nook. Double doors lead directly to a covered patio framed by climbing grapevines and honeysuckle that invites hummingbirds into the surrounding organic herb and flower gardens. The property offers established plantings of rosemary, oregano, thyme, basil, lavender, dill, chives, sage, and lemon balm set alongside roses and butterfly bushes with rich, organically maintained soil.
The kitchen pairs rustic charm with modern efficiency, featuring butcher block countertops, custom cabinetry, stainless steel appliances, and an expansive pantry with exceptional storage. A finished lower level adds flexible living space with radiant heated floors, a recreation area, and direct walkout access to the landscaped backyard.
Outdoors, mature 200-to-300-year-old maple trees and historic stonework surround a secluded bluestone saltwater pool set within a former sheep paddock. The grounds double as a thriving natural sanctuary frequently visited by native wildlife, including eagles, screech owls, rabbits, indigenous tortoises, and wild turkeys. Auxiliary structures like a sizable garden shed and flexible acreage provide prime potential for future guest cottages or secondary outbuildings. Located moments from the Sedgewood Club beachfront and golf course, Half Moon Farm represents an opportunity to own an eco-conscious Hudson Valley retreat within convenient commuting distance of New York City.
For sale
$1,495,000
521 Barrett Hill Road, Mahopac, NY 10541
3beds
2,737sqft
Single Family Residence, Residential
Built in 1825
3.13 Acres Lot
$-- Zestimate®
$546/sqft
$-- HOA
What's special
Restored original wood floorsClassic architectural proportionsSizable garden shedCustom built-insQuiet reading nookLight-filled interiorsWelcoming entry
- 36 days
- 761
- 115
Zillow last checked:
Listing updated:
Listed by:
Four Seasons Sothebys Intl 845-876-5100,
Yves S. Bouzaglo 212-363-0864
Source: OneKey® MLS as distributed by MLS GRID,MLS#: 1059397
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 3
- Bathrooms: 2
- Full bathrooms: 2
Bedroom 2
- Level: Second
Bedroom 3
- Level: Second
Bathroom 1
- Level: Second
Bathroom 1
- Level: Second
Bathroom 2
- Level: Lower
Bonus room
- Level: Lower
Dining room
- Level: First
Kitchen
- Level: First
Laundry
- Level: Basement
Living room
- Level: First
Office
- Level: First
Heating
- Ducts, Forced Air, Radiant Floor
Cooling
- Central Air
Appliances
- Included: Dishwasher, Dryer, Gas Range, Refrigerator, Stainless Steel Appliance(s), Washer, Oil Water Heater, Water Softener Owned
- Laundry: In Basement, Laundry Room
Features
- Beamed Ceilings, Chefs Kitchen, Crown Molding, Eat-in Kitchen, Entrance Foyer, Original Details, Pantry, Smart Thermostat, Soaking Tub, Storage, Walk Through Kitchen
- Flooring: Hardwood, Tile
- Basement: Finished,Walk-Out Access
- Attic: Unfinished
- Number of fireplaces: 1
- Fireplace features: Wood Burning
Interior area
- Total structure area: 2,737
- Total interior livable area: 2,737 sqft
Property
Parking
- Total spaces: 3
- Parking features: Off Street, Parking Lot, Private
- Garage spaces: 1
Features
- Levels: Three Or More
- Patio & porch: Patio, Terrace
- Exterior features: Garden
- Has private pool: Yes
- Pool features: In Ground, Outdoor Pool, Salt Water
- Fencing: Partial,Perimeter
- Has view: Yes
- View description: Trees/Woods
Lot
- Size: 3.13 Acres
Details
- Parcel number: 37200004200000010110000000
- Special conditions: None
- Other equipment: Dehumidifier, Generator, Pool Equip/Cover
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Colonial,Farmhouse
- Property subtype: Single Family Residence, Residential
Materials
- Wood Siding
- Foundation: Stone
Condition
- Year built: 1825
Utilities & green energy
- Sewer: Septic Tank
- Water: Well
- Utilities for property: Cable Available, Electricity Connected, Propane
Community & HOA
HOA
- Has HOA: No
Location
- Region: Mahopac
Financial & listing details
- Price per square foot: $546/sqft
- Tax assessed value: $746,700
- Annual tax amount: $20,222
- Date on market: 10/6/2026
- Cumulative days on market: 182 days
- Listing agreement: Exclusive Right To Sell
- Electric utility on property: Yes
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 10/6/2026 | Listed for sale | $1,495,000-6%$546/sqft |
Source: | ||
| 9/16/2026 | Listing removed | $1,590,000$581/sqft |
Source: | ||
| 4/4/2026 | Listed for sale | $1,590,000-27.6%$581/sqft |
Source: | ||
| 1/23/2026 | Listing removed | $2,195,000$802/sqft |
Source: | ||
| 9/26/2025 | Listed for sale | $2,195,000+299.1%$802/sqft |
Source: | ||
| 5/8/2015 | Sold | $550,000-7.6%$201/sqft |
Source: Agent Provided Report a problem | ||
| 4/10/2015 | Listed for sale | $595,000$217/sqft |
Source: Brewster Brokerage #298077 Report a problem | ||
| 8/13/2014 | Pending sale | $595,000$217/sqft |
Source: Houlihan Lawrence #298077 Report a problem | ||
| 11/10/2012 | Listed for sale | $595,000+8.2%$217/sqft |
Source: Houlihan Lawrence #298077 Report a problem | ||
| 9/23/2011 | Sold | $550,000-7.6%$201/sqft |
Source: Public Record Report a problem | ||
| 5/22/2011 | Listed for sale | $595,000-6.3%$217/sqft |
Source: Houlihan Lawrence #3115851 Report a problem | ||
| 1/4/2011 | Listing removed | $635,000$232/sqft |
Source: Prudential Real Estate #3002109 Report a problem | ||
| 10/15/2010 | Price change | $635,000-2.3%$232/sqft |
Source: Prudential Real Estate #3002109 Report a problem | ||
| 7/1/2010 | Price change | $650,000-3.7%$237/sqft |
Source: Prudential Real Estate #3002109 Report a problem | ||
| 1/22/2010 | Listed for sale | $675,000+3.5%$247/sqft |
Source: Prudential Real Estate #3002109 Report a problem | ||
| 4/1/2008 | Sold | $652,000+15.9%$238/sqft |
Source: Public Record Report a problem | ||
| 6/11/2004 | Sold | $562,500+32%$206/sqft |
Source: Public Record Report a problem | ||
| 10/30/1997 | Sold | $426,000+29.1%$156/sqft |
Source: Public Record Report a problem | ||
| 10/19/1994 | Sold | $330,000$121/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | -- | $799,000 +7% |
| 2024 | -- | $746,700 +5% |
| 2023 | -- | $711,100 +11% |
| 2022 | -- | $640,600 +6.1% |
| 2021 | -- | $603,800 +2% |
| 2020 | -- | $592,000 +3% |
| 2019 | -- | $574,800 +2% |
| 2018 | -- | $563,500 +4% |
| 2017 | $18,849 | $541,800 +64.2% |
| 2016 | -- | $330,000 |
| 2015 | -- | $330,000 |
| 2014 | -- | $330,000 |
| 2013 | -- | $330,000 |
| 2012 | -- | $330,000 |
| 2011 | -- | $330,000 |
| 2010 | -- | $330,000 |
| 2009 | -- | $330,000 |
| 2008 | -- | $330,000 |
| 2007 | -- | $330,000 |
| 2006 | -- | $330,000 |
| 2005 | -- | $330,000 |
| 2004 | -- | $330,000 |
| 2003 | -- | $330,000 |
| 2002 | -- | $330,000 |
| 2001 | -- | $330,000 |
| 2000 | -- | $330,000 |
Find assessor info on the county website
Monthly payment
Climate risks
Neighborhood: 10541
Nearby schools
Schools provided by the listing agent
- Elementary: Austin Road Elementary School
- Middle: Mahopac Middle School
- High: Mahopac High School
Source: OneKey® MLS as distributed by MLS GRID. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.





