This home's estimate is 11.3% lower than the average sale price ($870K) of 6 comparable homes.
Search- Overview
- Sale & tax history
- Property details
- Neighborhood
- Climate
428 Union Valley Rd, Mahopac, NY 10541
About this home
Tucked away for privacy, yet minutes from everything! Elegant formal living and dining rooms with a cozy fireplace. The eat-in kitchen boasts granite countertops and brand-new appliances. The spacious primary suite features a walk-in closet. A charming loft with spiral staircase overlooks the soaring family room with cathedral ceilings and skylights. Gleaming hardwood floors add warmth to the family room, while pocket doors lead to a versatile playroom or home office. Sliding glass doors open to a patio and a beautifully landscaped yard, where stone pavers guide you to a stunning heated saltwater Gunite pool and pool cabana shed. Additional highlights include alarm system, portable generator hook-up, thermostats in every room and a high-efficiency pellet stove.
Redfin Estimate
Earn from this home
List your home with Redfin and save $7,713
Get cash now or lower your monthly rate
List your home for rent
Market trends in 10541, NY
Last updated August 2026
Buyer's Market
Seller's Market
Seller's market
- $1,300,0004 beds3.5 baths4,890 sq ft7 Lauro Ridge Ct, Mahopac, NY 10541Listing by Houlihan Lawrence Inc.
- COMING SOON
- COMING SOON$1,325,0004 beds4 baths3,789 sq ft50 Wixon Pond Rd, Mahopac, NY 10541Listing by Houlihan Lawrence Inc.
- OPEN SUN, 1PM TO 3PM
- 3D WALKTHROUGH
See all
Provided by Redfin
Sale history for 428 Union Valley Rd
$349/sq ft
$339/sq ft
$339/sq ft
$245/sq ft
$252/sq ft
$252/sq ft
$245/sq ft
$170/sq ft
$184/sq ft
$170/sq ft
$131/sq ft
$81/sq ft
** Price available after signing in.
Tax history for 428 Union Valley Rd
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Property details
Parking
- Parking Information
- Carport YN: No
- Garage Information
- Garage Spaces: 1
- Has Garage
Interior
- Fireplace Information
- Has Fireplace
- Fireplaces Total: 2
- Heating & Cooling
- Cooling: Wall/Window Unit(s)
- Heating: Electric
- Interior Features
- Interior Features: First Floor Bedroom,Beamed Ceilings,Breakfast Bar,Cathedral Ceiling(s),Ceiling Fan(s),Primary Bathroom,Master Downstairs,Walk-In Closet(s)
- Appliances: Dishwasher, Microwave, Refrigerator, Washer
- Room Information
- Basement YN: No
- Attic: Unfinished
- Rooms Total: 8
- Bathroom Information
- Bathrooms Full: 2
Exterior
- Exterior Features
- Construction Materials: Vinyl Siding
- Fencing: Fenced
- Other Structures: Garage(s), Shed(s)
- Security Features: Security System
- Waterfront YN: No
- Pool Information
- Has Private Pool
- Pool Features: In Ground
- Property Information
- Living Area Source: Public Records
- Living Area (Sq. Ft.): 2064.00
- Property Sub Type: Single Family Residence
Financial
- Tax Information
- Tax Year: 2024
- Tax Source: Municipality
- Tax Annual Amount: $15,811
- Financial Information
- Buyer Financing: Conventional
Utilities
- Utility Information
- Electric Company: NYSEG
- Sewer: Septic Tank
- Utilities: Trash Collection Private
Location
- School Information
- Elementary School: Fulmar Road Elementary School
- Elementary School District: Mahopac
- Middle Or Junior School: Mahopac Middle School
- Middle Or Junior School District: Mahopac
- High School: Mahopac High School
- High School District: Mahopac
- Location Information
- County Or Parish: Putnam County
Public facts
- Beds: 3
- Baths: 2.0
- Sq. Ft.: 2,064
- Stories: 1.0
- Lot Size: 1.51 acres
- Style: Single Family Residential
- Year Built: 1983
- Year Renovated: —
- County: Putnam County
- APN: 372000A08700600020250000000
Around this home
Schools
Public K-5 • Assigned • 1.2mi
Public 6-10 • Assigned • 2.3mi
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
Minimal risk of a flood reaching the building in the next 30 years
Unlikely to be in a wildfire in next 30 years
7 days above 99° expected this year, 15 days in 30 years
21% chance of strong winds in next 30 years
3 unhealthy days expected this year, 5 days in 30 years
Sun exposure
In this area, properties receive around 8.6 hours in June and 4.1 hours in December, placing it below the U.S. average for solar exposure.
Nearby similar homes
New listings for sale in 10541
Home values near 428 Union Valley Rd
| Address | Redfin Estimate |
|---|---|
4 Beds | 2 Baths | 2060 Sq. Ft. | $761,900 |
3 Beds | 3 Baths | 2656 Sq. Ft. | $830,397 |
| Address | Redfin Estimate |
|---|---|
4 Beds | 1.5 Baths | 1785 Sq. Ft. | $628,397 |
4 Beds | 2.5 Baths | 2092 Sq. Ft. | $706,009 |
| Address | Redfin Estimate |
|---|---|
4 Beds | 2 Baths | 2432 Sq. Ft. | $711,802 |
5 Beds | 3 Baths | 4908 Sq. Ft. | $753,574 |
More real estate resources
- Minor Civil Divisions
- Cities
- Zip Codes
- Popular Searches
| Brookfield homes for sale | |||
| Wilton homes for sale | |||
| Weston homes for sale | |||
| Mahwah Township homes for sale | |||
| New Canaan homes for sale |
| Greenwich homes for sale | |||
| Stamford homes for sale | |||
| Norwalk homes for sale |
| 10589 homes for sale | |||
| 10541 homes for sale | |||
| 10509 homes for sale | |||
| 10579 homes for sale | |||
| 10512 homes for sale |
Find us
Subsidiaries
Affiliated Business
Copyright: © 2026 Redfin. All rights reserved.
Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.
Do not sell or share my personal information.
REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.
California DRE #01521930
Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures
New Mexico Real Estate Licenses
TREC: Info About Brokerage Services, Consumer Protection Notice
All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.
Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.
If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.
REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.







































United States
Canada