Highest sale ever on River Road. Nestled in the heart of Potomac’s Golden Horseshoe along the aptly dubbed ‘Millionaire’s Mile’ stretch of River Road is a grand Neoclassical Revival constructed by and for celebrated master builder David Niroo and world-renowned interior designer Haleh Niroo of Haleh Design. Reminiscent of the finest European palaces, Villa Riviere introduces the fortress-like construction and meticulous workmanship of a bygone era to the modern age, creating a true home of distinction at the intersection of unparalleled quality and state-of-the-art technology. Wrought-iron gates automatically part to reveal a meandering paver driveway, which terminates at the elegant limestone facade crowned by a natural slate roof and rotunda vis-à-vis the ones topping Italy’s most legendary basilicas. Beyond the oversized glass and wrought-iron front doors evokes grandeur and presence only shared by the aforementioned cathedrals. Greeted by soaring heights, a marble-clad double staircase, Corinthian columns, an oversized Swarovski chandelier, and a ceiling mural, which would not look out of place if done by Michelangelo himself, the grand foyer introduces a truly special residence equally apt at accommodating large-scale entertainment or casual domestic living. It is this effortless transition that truly sets the home apart. The double-height formal living room, for example, boasts a wall of Palladian windows, a full-height limestone fireplace, and elaborate moldings, ideally suited for influential gatherings. In contrast, although grand in scale, the family room establishes itself as an intimate place to watch the television or curl up with a novel, with custom built-ins and direct outdoor access. The gentleman’s library is a dignified space, with full paneling and a world map painted on the ceiling. Meanwhile, the chef’s kitchen boasts inviting cream-colored cabinetry, limestone Versailles pattern flooring, and all the most modern, top-of-the-line appliances. The main level owner’s suite would be suitable for a monarch, with its soaring ceilings enhancing the flow of natural light through oversized windows. Similarly, the owner’s bath features heated marble floors, a column-framed soaking tub, and exquisite separate vanities with a dedicated makeup station, all topped by a stunning blown glass chandelier imported from Murano, Italy. The secondary bedrooms could be classified as primary suites, featuring balconies, fireplaces, separate soaking tubs, and countless other features. The ethereal walkout lower level is its own self-sufficient residence, with a large recreation room, circular bar, professional wine cellar and a full-service kitchen. The private home cinema is of commercial quality and harkens back to the golden age of Hollywood, even including dedicated bar seating. Out back, the full-width limestone terrace gracefully descends to the patio area via an elegantly flared staircase. Meanwhile, the lap pool introduces a spectacularly flat grassy expanse, as with all Great European country estates. Behind the scenes, commercial-grade mechanical, audio, and visual systems, including a full Lutron lighting suite, allow total control anywhere on the planet and augment the fortified steel-framed construction implemented in all Niroo estates. Bringing global influences on a gentle knoll surrounded by scenic vistas in close-in Potomac, 9300 River Road is a home of no compromises and one of the great estates of the Capital Region.
Single-familyProperty Type
2006Year Built
2.85 acresLot Size
$368Est. Price/Sq.Ft.
4 car garageParking
Listed by Daniel Heider• TTR Sotheby's International Realty
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Public record
Zoning
Permits
Beds
—
Baths
10
Stories
2
Lot width
—
Lot depth
—
Lot size
2.85 Acres
Year renovated
—
Sq. Ft.
17,406
Year built
2006
Style
Single Family Residential
County
Montgomery County
APN
10 00866308
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 18, 2026.
RE-2
Residential Estate - 2 Zone
The intent of the RE-2 zone is to provide designated areas of the County for large-lot residential uses. The predominant use is residential in a detached house.
Permitted uses
Include but are not limited to:
Agriculture-Other
Religious facility
Housing-Single unit
Housing-Senior
Infrastructure-Other
Public service
Kennel
Transportation-Other
Park & open space
Nov 22, 2005 • Final
Building residential
Addition
Nov 22, 2005 • Final
Electrical
Electrical
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Parking
Parking Information
# of Detached Garage Spaces: 4
Garage Features: Garage Door Opener, Garage - Side Entry
Lot Features: Backs to Trees, Landscaping, Level, Premium, Trees/Wooded
Tidal Water: No
Land Information
Land Assessed Value: $1,261,000
Above Grade Information
Unfinished Sq.Ft.: 4430
Unfinished Sq.Ft. Source: Estimated
Finished Sq.Ft.: 12,280
Finished Sq.Ft. Source: Estimated
Below Grade Information
Finished Sq.Ft.: 6,620
Finished Sq.Ft. Source: Estimated
Financial
Tax Information
Agricultural Tax Due: No
County Tax: $60,154
Tax Assessed Value: $5,364,600
Tax Year: 2021
Tax Annual Amount: $60,680
Assessments Information
Year Assessed: 2021
Utilities
Utilities Information
Central Air
Cooling Type: Central A/C, Programmable Thermostat, Zoned
Cooling Fuel: Electric
200+ Amp Service
Forced Air, Programmable Thermostat, Zoned
Heating Fuel: Natural Gas
Hot Water: 60+ Gallon Tank, Multi-tank, Natural Gas
Sewer Septic: Septic = # of BR, Septic Exists
Water Source: Public
Location
School Information
High School: WALT WHITMAN
School District Name: MONTGOMERY COUNTY PUBLIC SCHOOLS
School District Source: Listing Agent
Location Information
Outside City Limits
Directions: Located off of River Road between Congressional Parkway and Durham Drive
Road Responsibility: City/County
Road Surface Type: Paved
Public facts
Beds: —
Baths: 10.0
Sq. Ft.: 17,406
Stories: 2.0
Lot Size: 2.85 acres
Style: Single Family Residential
Year Built: 2006
Year Renovated: —
County: Montgomery County
APN: 10 00866308
Home facts updated by county records on Jul 18, 2026
Around this home
Schools
Carderock Springs Elementary School
Public K-5 • Assigned • 1.8mi
10/10
Thomas W. Pyle Middle School
Public 6-8 • Assigned • 3.4mi
10/10
Walt Whitman High School
Public 9-12 • Assigned • 3.7mi
9/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
Potomac, MD, is known for its affluent neighborhoods, large estate homes, country clubs and scenic natural beauty, including Great Falls Park and the C&O Canal. It offers a blend of suburban tranquility and upscale amenities, making it a sought-after...