Date
Details
Price
Change
Source
7/26/2026
Listed
$1,400,000
—
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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1/43
$1,400,000 Just Listed
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1/43
Property Description
Welcome to this custom Colonial offering approximately 4,075 sq. ft. of living space on 2.3 private acres in one of Warren Township's most desirable locations. Lovingly designed and built by its original owner, this thoughtfully planned home was truly ahead of its time. A grand tiled foyer welcomes you to a versatile floor plan featuring a formal living room with fireplace (also ideal as a first-floor bedroom), formal dining room, spacious great room with fireplace, den/office, gourmet kitchen with newer cabinetry and state-of-the-art appliances, full bath, powder room, and laundry room. The second level offers a primary suite with its own HVAC zone, gas fireplace, spa-like bath with soaking tub, separate shower and dual vanities, plus four additional spacious bedrooms and a full hallway bath. One bedroom is tucked within its own private wing and features an ensuite bath, private staircase to the main level, separate exterior entrance, and access to the second-floor hallway. An open loft overlooking the dramatic great room provides additional living space. The full unfinished basement features high ceilings, a full bath, interior access, and direct access to the oversized attached three-car garage. Outside, enjoy a spacious deck, slate patio, circular driveway, open lawn, wooded surroundings, and exceptional privacy. Move-in ready with opportunity to personalize. Convenient to parks and trails, shopping, dining, and major highways.
Full Property Details
Full Property Details for 21 Round Top Rd
General
- Price: $1,400,000
- Taxes: $19,385 (2025)
- Status: Active
- Type: Single Family
- Source: Garden_State
- MLS ID: 4041938
- Updated: 7/26/2026
- Added to Site: 1 day(s) ago
Interior
- Number of Rooms: 11
- 2nd Floor/Level 2: 4 Or More Bedrooms, Bath Main, Bath(s) Other, Loft
- 1st Floor/Level 1: Other Bath, Den, Dining Room, GarEnter, Great Room, Laundry Room, Living Room, Powder Room
- Lower Level: Inside Entrance, Outside Entrance, Rec Room, SeeRem, Utility Room
- Interior Features: Cathedral Ceiling, High Ceilings, Skylight
- Number of Fireplaces: 3
- Fireplace(s): Bedroom 1, Gas Fireplace, Great Room, Living Room, Wood-Burning
- Appliances: Dishwasher, Dryer, Gas Range and Oven, Refrigerator, See Remarks, Sump Pump, Washer, Wine Refrigerator
- Flooring: Carpeting, Tile, Wood
Rooms
Bathrooms
- Total Bathrooms: 6
- Full Bathrooms: 5
- Half Bathrooms: 1
Bedrooms
- Total Bedrooms: 5
- Primary Bedroom: Fireplace, Full Bath, Walk-In Closet
- Bedroom 1: 23 x 15, Second
- Bedroom 2: 17 x 13, Second
- Bedroom 3: 15 x 13, Second
- Bedroom 4: 15 x 13, Second
Other Rooms
- Living Room: 23 x 16, First
- Family Room: 29 x 17, First
- Kitchen: Center Island, Eat-In Kitchen, Separate Dining Area, 26 x 15, First
- Dining Room: Formal Dining Room, 17 x 15, First
- Den: 17 x 17, First
- Bedroom: 35 x 12, Second
- Loft: 17 x 13, Second
- Laundry Room: First
- Rec Room: Basement
Exterior
- Exterior Features: Deck, Patio, Underground Lawn Sprinkler
- Color: beige
Parking
- Garage: Yes
- Garage Spaces: 3
- Garage Description: Attached Garage, Garage Door Opener, InEntrnc, Oversize Garage
Location
- County: Somerset
- Driving Directions: Mount Horeb or Mountainview to Round Top
School Information
- Elementary School: MT HOREB
- Middle School: MIDDLE
- High School: WHRHS
Heating & Cooling
- Cooling Type: Central Air Conditioning, Multi-Zone Cooling
- Heating Type: Forced Hot Air, Multi-Zone
- Heating Fuel: Natural Gas
Utilities
- Sewer: Public Sewer
- Water: Public Water
- Utility Description: Natural Gas
Structural Information
- Architectural Style: Colonial
- Basement: Yes
- Basement Desc.: Full, Unfinished, Walk-Out
- Roof: Asphalt Shingles
- Square Feet: 4,075
- Year Built: 1990
Lot Features
- Lot Size (Acres): 2.3
- Lot Size: 2.3
- Driveway/Sidewalk: Additional Parking, Blacktop, Circular
- Zoning: residential
- Lot Description: Level Lot
Financial Considerations
- Assessment Amount: $1,177,100
- Land Assmt: $461,200
- Tax Amount: $19,385
- Tax Year: 2025
Disclosures and Reports
- Ownership: Fee Simple
- Exclusions: Personal property; some items may be available for sale
- Disclosures: Yes
- APN: 2720-00027-0000-00031-0007-
- Block: 27
- Lot Number: 31.07
Listed by Exp Realty, Llc
We Value Your Privacy
We Value Your Privacy
We Value Your Privacy
Listing agent
— 21 Round Top Rd —
Exp Realty, Llc
908-922-9995
NMLS#: 1598647Get Pre-Approved Today
Schools
Schools serving 21 Round Top Rd
School Districts:Warren Township School District, Watchung Hills Regional School District
| Name | Grades | Distance |
|---|---|---|
Mount Horeb Elementary School 80 Mount Horeb Road, Warren, NJ 07059 | K-5 | 0.6 mi |
Middle School 100 Old Stirling Road, Warren, NJ 07060 | 6-8 | 3.3 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 21 Round Top Rd
Tax History
Tax History for 21 Round Top Rd
Year
Property Taxes
Change
Tax Assessment
Change
2025
$19,386
3%
$1,177,100
6%
2024
$18,755
4%
$1,106,500
16%
2022
$18,064
-1%
$950,800
5%
2021
$18,260
2%
$909,100
3%
2020
$17,984
2%
$879,600
1%
2019
$17,606
4%
$868,800
2%
2018
$16,886
1%
$849,800
1%
2017
$16,671
—
$838,600
1%
2016
$16,647
1%
$828,600
3%
2015
$16,421
-7%
$801,800
-7%
2019
$17,606
15%
$863,900
12%
2013
$15,257
—
$771,900
—
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 21 Round Top Rd
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21 Round Top Rd, Warren Township, NJ 07059 (MLS# 4041938) is a Single Family property with 5 bedrooms, 5 full bathrooms and 1 partial bathroom. 21 Round Top Rd is currently listed for $1,400,000 and was received on July 26, 2026. Want to learn more about 21 Round Top Rd? Do you have questions about finding other Single Family real estate for sale in Warren Township? You can browse all Warren Township real estate or contact a Coldwell Banker agent to request more information.