6815 OSBORNE HILL DRIVE, UPPER MARLBORO, MD 20772

$1,354,999

Welcome to your private estate retreat in the prestigious Windsong community, perfectly situated on nearly 9 acres of wooded grounds, offering a rare sense of seclusion and tranquility at the end of a quiet, no-outlet street. This 4-bedroom, 5-bath Caruso Kingsport model offers over 7,300 square feet of finished living… Read More space, enhanced by a full rear bump-out across all levels, creating a more open and elevated layout. A grand two-story foyer makes an immediate impression with marble flooring, shadow box detailing, crown molding, and a dramatic dual staircase with an upper-level catwalk, setting the tone for the refined architectural design throughout. The main level serves as the heart of the home, featuring a two-story great room with ceramic tile flooring, coffered ceilings, a marble and glass tile gas fireplace, refined shadow box detailing, and floor -to-ceiling Palladian-style windows that fill the home with natural light. The open-concept design flows seamlessly into the chef's kitchen, showcasing an oversized island, top-of-the-line appliances, a sunroom, a butler's pantry, and more. Additional main-level features include a formal dining room, living room, full bathroom, private office (or optional 5th bedroom), and a conservatory living area offering both comfort and versatility. The upper-level private owner's suite provides a true retreat, featuring a striking three-sided fireplace, spacious sitting areas, dual walk-in closets, and a spa-inspired bathroom. 3-generous-sized secondary bedrooms included well-appointed baths, with one offering a Jack-and-Jill layout. A full laundry room with cabinetry, adding everyday convenience, completes the 2nd level. The fully finished walkout basement extends the home's living space, offering a wet bar, fitness room, full bath, and additional unfinished spaces, ideal for a home theater, wine cellar, in-law suite, guest suite, or other extended living options. Outdoor living is equally impressive, with the sunroom leading to the main deck with stairs to the backyard and patios - ideal for gatherings. On the opposite side of home, the conservatory opens to a more private deck with a hot tub, a mounted TV, and a retractable awning - perfect for quiet relaxation overlooking the peaceful wooded surroundings. This premium lot is further enhanced by a 3-car garage, whole house generator, aluminum fencing, an irrigation system, a shed, gas hookup for outdoor cooking, and numerous thoughtful upgrades throughout. Read Less

Courtesy of Kimberly M Ferguson, RE/MAX Realty Group 301-258-7757

Listing Snapshot

Days Online

Last Updated

May 2, 2026

Property Type

Single Family Residential

Beds

Full Baths

Square Ft.

7,417

Lot Size

8.74 Acres

Year Built

2014

MLS Number

MDPG2198764

Additional Details

Property Access

Road Responsibility: City/County, Road Surface: Approved, Black Top, Paved

Basement

Connecting Stairway, Drainage System, Fully Finished, Heated, Improved, Interior Access, Outside Entrance, Rear Entrance, Space For Rooms, Sump Pump, Walkout Level, Daylight, Full, Water Proofing System

Building

Built in 2014, Living area: 7417, Levels: 3, Construction Materials: Frame

Cooling

Central A/C, Ceiling Fan(s), Energy Star Cooling System, Programmable Thermostat

Doors

ENERGY STAR Qualified Door(s), Sliding Glass, Insulated

Accessibility Features

Level Entry - Main, >84" Garage Door, 2+ Access Exits, 32"+ wide Doors, 36"+ wide Halls

Exterior Features

Patio/Porch Features: Deck(s), Patio(s), Awning(s), Exterior Lighting, Hot Tub, Lawn Sprinkler, Underground Lawn Sprinkler

Fence

Aluminum, Rear

Fireplaces

2 fireplaces, Fireplace - Glass Doors, Gas/Propane, Marble

Floors

Ceramic Tile, Marble, Partially Carpeted, Vinyl, Luxury Vinyl Plank

Foundation

Concrete Perimeter, Permanent, Slab

Garage

3 spaces

Heating

90% Forced Air, Programmable Thermostat

Home Owner's Association

Association Fee: $217.59, Fee Frequency: Quarterly, Fee Includes: Common Area Maintenance, Amenities: None

Interior Features

Bar, Butlers Pantry, Ceiling Fan(s), Chair Railings, Crown Moldings, Double/Dual Staircase, Efficiency, Entry Level Bedroom, Family Room Off Kitchen, Floor Plan - Open, Formal/Separate Dining Room, Kitchen - Gourmet, Kitchen - Island, Pantry, Recessed Lighting, Sprinkler System, Upgraded Countertops, Walk-in Closet(s), WhirlPool/HotTub, Wet/Dry Bar, Bathroom - Tub Shower, Bathroom - Walk-In Shower, Bathroom - Soaking Tub, Carpet

Lot

8.74 acres

Parking

Asphalt Driveway

Property

Excellent, Other structures: Above Grade, Below Grade, Trees/Woods

Roof

Architectural Shingle

Security Features

Carbon Monoxide Detector(s), Exterior Cameras, Fire Detection System, Motion Detectors, Smoke Detector, Sprinkler System - Indoor

Sewer

Public Sewer

Taxes

Annual Amount: $15,381, Lot: 22, Year: 2026, Zoning: AR

Utilities

Water Source: Public

Windows

Double Pane, Double Hung, Energy Efficient, Screens

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