Date
Details
Price
Change
Source
5/16/2026
Listed
$2,800,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
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Property Description
Known as "Glenowre," this distinguished 1906 south-facing Tudor estate offered for the first time in 50 years blends historic pedigree with refined modern living. Designed by noted Morristown architect Robert C. Walsh (Morris County Golf Club) for famed engineer Daniel E. Moran, the home reflects a rare level of architectural significance. Set on four private acres and surrounded by the protected beauty of the India Brook Preserve, the property offers exceptional privacy and a true estate setting. Inside, mahogany carved woodwork spans both the first and second floors, while grand-scale public rooms evoke a bygone era of elegance and craftsmanship. A distinctive ante room, leading to the dining room, features wood paneling sourced from a ship's quarters, and a discreet secret door off the receiving room adds a touch of character and intrigue. Sunlit piazzas with walls of windows overlook the preserve, seamlessly connecting indoor and outdoor living. A 2021 kitchen updated balances classic design with modern function, featuring a Wolf gas cooktop, two electric wall ovens, stainless refrigerator/freezer, dishwasher, and a butler's pantry with beverage fridge and wet bar for effortless entertaining. The grounds include a Har-Tru tennis court and a blend of open and wooded landscape of preserved land. Do not miss the opportunity to own a legacy Tudor estate in Mendham with history, character, and enduring appeal.
Full Property Details
Full Property Details for 251 Mountainside Rd
General
- Price: $2,800,000
- Taxes: $35,233 (2025)
- Status: Active
- Type: Single Family
- Source: Garden_State
- MLS ID: 4027256
- Updated: 5/16/2026
- Added to Site: 1 day(s) ago
Interior
- Number of Rooms: 23
- 3rd Floor/Level 3: Attic, Maid Quarters, RecRoom
- 2nd Floor/Level 2: Bedroom 4+, Main Bath, Other Bath, Laundry Room, Office, SittngRm
- 1st Floor/Level 1: Conservatory, Den, Dining Room, Foyer, Kitchen, Library, Living Room, MudRoom, Office, Pantry, Powder Room, SeeRem, Sunroom
- Lower Level: GameRoom, GarEnter, Storage Room, Utility Room, Workshop
- Interior Features: Wet Bar, Beam Ceilings, Elevator
- Number of Fireplaces: 11
- Fireplace(s): Bedroom 1, Dining Room, Foyer/Hall, Kitchen, Living Room, Wood-Burning
- Appliances: Carbon Monoxide Detector, Cooktop - Gas, Dishwasher, Dryer, Generator-Built-In, Kitchen Exhaust Fan, Microwave, Refrigerator, Wall Oven(s) - Electric, Washer, Wine Refrigerator
- Flooring: Tile, Wood
Rooms
Bathrooms
- Total Bathrooms: 6
- Full Bathrooms: 4
- Half Bathrooms: 2
Bedrooms
- Total Bedrooms: 7
- Primary Bedroom: Dressing Room, Fireplace, Full Bath, Sitting Room, Walk-In Closet
- Bedroom 1: 20 x 16, Second
- Bedroom 2: 16 x 14, Second
- Bedroom 3: 22 x 14, Second
- Bedroom 4: 16 x 13, Second
Other Rooms
- Living Room: 30 x 19, First
- Kitchen: Center Island, Eat-In Kitchen, Pantry, See Remarks, 21 x 18, First
- Dining Room: Formal Dining Room, 24 x 16, First
- Den: 13 x 12, First
- Bedroom: 14 x 10, Second
- Conservatory: 16 x 13, First
- Foyer: 25 x 17, First
- Game Room: 36 x 18, Basement
Additional Information
- Shared Amenities: Billiards Room, Tennis Courts
Exterior
- Exterior Features: Enclosed Porch(es), Greenhouse Type Room, Outbuilding(s), Patio, Storage Shed, Tennis Courts
- Color: Ivory
Parking
- Garage: Yes
- Garage Spaces: 3
- Uncovered Spaces: 5
- Garage Description: Attached Garage, Detached Garage
Location
- County: Morris
- Driving Directions: From the center of Mendham, Mountain to LEFT on Mountainside
School Information
- Elementary School: Mendham
- Middle School: Mendham
- High School: W.M.Mendham
Heating & Cooling
- Cooling Type: No Cooling
- Heating Type: Radiators - Hot Water
- Heating Fuel: Natural Gas
- Water Heater: Gas
Utilities
- Sewer: See Remarks
- Water: Public Water
- Utility Description: Electric, Natural Gas
Structural Information
- Architectural Style: Tudor
- Basement: Yes
- Basement Desc.: Finished-Partially, Unfinished, Walk-Out
- Roof: Slate/Imitation Slate
- Year Built: 1906
Lot Features
- Lot Size (Acres): 4.3
- Lot Size: 4.304 AC
- Driveway/Sidewalk: Blacktop, Circular
- Lot Description: Backs to Park Land, Open Lot, Wooded Lot
Financial Considerations
- Assessment Amount: $2,121,800
- Land Assmt: $444,200
- Tax Amount: $35,233
- Tax Year: 2025
Disclosures and Reports
- Ownership: Fee Simple
- Disclosures: Yes
- APN: 2319-00116-0000-00050-0000-
- Block: 116
- Lot Number: 50
Listed by KL SOTHEBY'S INT'L. REALTY
We Value Your Privacy
We Value Your Privacy
We Value Your Privacy
Listing agent
— 251 Mountainside Rd —
KL SOTHEBY'S INT'L. REALTY
973-214-9841
NMLS#: 1598647Get Pre-Approved Today
Schools
Schools serving 251 Mountainside Rd
School Districts:Mendham Township School District, West Morris Regional School District
| Name | Grades | Distance |
|---|---|---|
Mendham Twp Elementary School 18 West Main Street, Mendham Township, NJ 07926 | PK-4 | 2.5 mi |
Mendham Twp Middle School 16 Washington Valley Road, Mendham Township, NJ 07926 | 5-8 | 3.6 mi |
West Morris Mendham High School 65 East Main Street, Mendham Township, NJ 07945 | 9-12 | 1.6 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 251 Mountainside Rd
Tax History
Tax History for 251 Mountainside Rd
Year
Property Taxes
Change
Tax Assessment
Change
2024
$34,919
1%
$1,915,900
7%
2023
$34,592
2%
$1,798,100
9%
2022
$33,980
-4%
$1,655,900
3%
2021
$35,408
—
$1,607,400
—
2021
$35,408
—
$1,600,000
-20%
2021
$35,408
-17%
$2,005,900
—
2018
$42,465
2%
$2,005,900
—
2017
$41,482
—
$2,005,900
—
2016
$41,422
2%
$2,005,900
—
2015
$40,660
-6%
$2,005,900
—
2019
$43,287
11%
$2,005,900
—
2013
$38,874
—
$2,005,900
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 251 Mountainside Rd
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251 Mountainside Rd, Mendham Township, NJ 07945 (MLS# 4027256) is a Single Family property with 7 bedrooms, 4 full bathrooms and 2 partial bathrooms. 251 Mountainside Rd is currently listed for $2,800,000 and was received on May 16, 2026. Want to learn more about 251 Mountainside Rd? Do you have questions about finding other Single Family real estate for sale in Mendham Township? You can browse all Mendham Township real estate or contact a Coldwell Banker agent to request more information.