Half Moon Farm
Set on over three idyllic acres in the heart of the Hudson Valley, this exquisitely restored 19th-century farmhouse offers a rare blend of historic charm and thoughtfully curated modern living.
Originally dating to the early 1800s, the historically registered residence has been meticulously updated while preserving its authentic character, including original wood floors, classic proportions, and a warm, inviting atmosphere throughout. The home features three bedrooms and two baths with interiors designed to maximize natural light and seamless indoor-outdoor flow.
A gracious entry leads to a sun-filled living room anchored by a wood-burning fireplace, complemented by a cozy reading nook, custom built-ins, and direct access to a covered patio wrapped in climbing grape vines—a sun-kissed haven perfect for quiet mornings or evening entertaining. This enchanting outdoor space adorns an organic herb garden growing rosemary, oregano, thyme, basil, lavender, dill, chives, sage and lemon balm, between the roses and butterfly bushes. The entrance to the garden was intentionally adorned with honeysuckle, in order to invite the hummingbirds.
The updated kitchen pairs rustic sophistication with functionality, showcasing custom cabinetry, butcher block countertops, and stainless-steel appliances. The kitchen is further complemented by an expansive, well-appointed pantry offering exceptional storage.
The grounds are equally enchanting and the ample acreage is suited for the addition of guest cottages. Mature maple trees— some of which were 200 to 300 years old —frame a serene bluestone saltwater pool set within a former sheep paddock. Lush gardens with organically curated soil feature aromatic herbs, vegetables, flowering roses, and restored stonework. This private oasis fosters a natural sanctuary where eagles, screech owls, rabbits, indigenous tortoises and turkey families are frequently spotted.
Additional highlights include a finished lower level with heated floors, a recreation space, and direct access to the landscaped backyard, as well as auxiliary structures including a sizable garden shed.
This one-of-a-kind country escape embodies a rare opportunity to own a storied property where history, design, and nature exist in perfect harmony. One hour drive from Manhattan and just down the road from the Sedgewood Club Beachfront & Golf Course.
For sale
$1,590,000
521 Barrett Hill Road, Mahopac, NY 10541
3beds
2,737sqft
Single Family Residence, Residential
Built in 1825
3.13 Acres Lot
$-- Zestimate®
$581/sqft
$-- HOA
What's special
Custom built-insButcher block countertopsGracious entryOver three idyllic acresRoses and butterfly bushesSeamless indoor-outdoor flowWood-burning fireplace
- 9 days |
- 2,172 |
- 201 |
Zillow last checked:
Listing updated:
Listing by:
Corcoran Country Living 845-765-4888,
Yves S. Bouzaglo 212-363-0864
Source: OneKey® MLS as distributed by MLS GRID,MLS#: 980531
Tour with a local agent
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
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, 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
- Property subtype: Single Family Residence, Residential
Materials
- Wood Siding
- Foundation: Stone
Condition
- Year built: 1825
Utilities & green energy
- Sewer: Septic Tank
- Utilities for property: Cable Available, Electricity Connected, Propane
Community & HOA
HOA
- Has HOA: No
Location
- Region: Mahopac
Financial & listing details
- Price per square foot: $581/sqft
- Tax assessed value: $746,700
- Annual tax amount: $20,222
- Date on market: 4/4/2026
- Cumulative days on market: 10 days
- Listing agreement: Exclusive Right To Sell
- Inclusions: Appliances
- Electric utility on property: Yes
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
Price history
| Date | Event | Price |
|---|---|---|
| 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
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
Estimated monthly payment
All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
See how much you could borrow to make a competitive offer.
Climate risks
Neighborhood: 10541
Nearby schools
GreatSchools rating
- 6/10Austin Road Elementary SchoolGrades: K-5Distance: 2.4 mi
- 5/10Mahopac Middle SchoolGrades: 6-8Distance: 3.8 mi
- 7/10Mahopac High SchoolGrades: 7-12Distance: 4.1 mi
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.
A local agent can set up tours, give advice and negotiate with sellers.
- New York
- Putnam County
- Mahopac
- 10541
- 521 Barrett Hill Road






