Introducing a custom-built Brendan O’Neil home that is situated just under an acre with a long, private drive. The home offers picturesque views of lush open space and trees from its expansive deck with an awning. At almost 4,500 sqft, this lovingly maintained home has 4 bedrooms and 3.5 bathrooms on 3 levels, with an option to expand to 4 levels. Hardwood floors and crown molding are found throughout the main level, which features 3 wood-burning fireplaces, an office that could be converted into a main-level bedroom, a spacious dining room, and an open kitchen that flows into a family room. The upper level has hardwood floors throughout and features a primary bedroom with a large walk-in closet and an attached bathroom with a separate shower and jetted tub. Flow into the two hall bedrooms with a shared bathroom, and a fourth bedroom with an en-suite bathroom and three oversized closets. An unfinished attic presents endless possibilities. The basement has a walk-out to the backyard, high ceilings, ample storage, a large playroom or office, and another family room. A two-car attached garage has multiple storage closets, and the driveway offers ample parking. Additional updates from sellers to highlight include a new roof, electrical update, Security System Installed, and Septic recently pumped and serviced. Please contact the agent for more details. Pictures reflect virtually staged furniture.
Well maintained overall. Wood deck. Fireplace in the living room and family room and dining room. Basement walks out to the backyard and has a bonus room and a large unfinished space. Laundry is located as you come in from the garage before you enter...
the kitchen.
3 years ago• May not reflect the current state of the home
Robin Andrews
Redfin Associate agent
Sale history for 12813 Glen Mill Rd
Date
Event
Price
BRIGHT MLS #MDMC2092460
Sep 29, 2023
Sold
$1,380,000
$307/sq ft
Sep 18, 2023
Contingent
—
Sep 12, 2023
Price Changed
$1,380,000
$307/sq ft
Sep 12, 2023
Relisted
—
Sep 10, 2023
Listing Removed
—
Aug 11, 2023
Price Changed
$1,425,000
$317/sq ft
Aug 11, 2023
Relisted
—
Aug 8, 2023
Listing Removed
—
Jun 19, 2023
Price Changed
$1,475,000
$328/sq ft
May 19, 2023
Listed
$1,535,000
$341/sq ft
May 9, 2023
Price Changed
$1,535,000
$341/sq ft
May 9, 2023
Coming Soon
$1,525,000
$339/sq ft
BRIGHT MLS #MDMC2067138
Nov 18, 2022
Sold
$1,400,000
$311/sq ft
Oct 8, 2022
Pending
—
Sep 30, 2022
Listed
$1,450,000
$322/sq ft
Sep 9, 2022
Coming Soon
$1,450,000
$322/sq ft
East Coast traditional center hall colonial rarely seen in Maryland. This is a custom built Brendan O'Neil home. This property is located just off of Glen Mill on a private drive. This home is meticulously maintained by the owners who are the second owners ever. This home is situated on just under 1 acre. The backyard boasts an expansive deck with awning. The deck sits high above a picturesque backyard that features plentiful lush open space and also is surrounded by trees. This colonial is almost 4,500 total square feet and has 4 bedrooms and 3.5 bathrooms on 3 levels, with an option to expand to 4 levels. The main level has hardwood floors throughout. There are 3 wood-burning fireplaces on the main level. Formal living room has a fireplace with crown molding. Off of the living room is a large office with chair railings and built-ins. The office could be converted in to a main level bedroom. The large dining room features crown molding, chair railing, and 6-inch baseboards. The expansive kitchen is open and flows in to the family room. Both rooms can walk out to a huge deck with awning. The deck features a large mounted tv (included) . The upper level takes you to coastal New England and has hardwood floors throughout. The primary bedroom has a large walk-in closest, with an attached bathroom. The bathroom features a separate shower along with a jetted tub. 2 hall bedrooms both have large closets and share a hall bathroom that has a tub shower. The 4th bedroom has its own suite with an attached bathroom with 3 oversized closets. The upstairs hallway leads to a staircase that leads to an unfinished attic. The options are endless for the attic. The basement is 1200 square feet. It features a walk out to the backyard. The ceilings are very high and it has room for ample storage. It features a large separate playroom or office, along with another family room. Two -car attached garage with multiple storage closets and separate walk out to backyard from the garage. Ample parking in the driveway with a basketball hoop. Located in the Winston Churchill school district. Do not miss this rare gem!
*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
3.5
Stories
2
Lot width
—
Lot depth
—
Lot size
0.95 Acres
Year renovated
—
Sq. Ft.
4,499
Year built
1989
Style
Single Family Residential
County
Montgomery County
APN
04 00056103
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Oct 15, 2026.
RE-1
Residential Estate - 1 Zone
The intent of the RE-1 zone is to provide designated areas of the County for large-lot residential uses. The predominant use is residential in a detached house. Optional method MPDU Development is applicable only for development that is served by public sewer service and where designated for sewer service in the applicable master plan.
Permitted uses
Include but are not limited to:
Agriculture-Other
Assembly/ meeting place
Housing-Single unit
Housing-Senior
Infrastructure-Other
Public service
Kennel
Transportation-Other
Park & open space
Jun 19, 1987 • Final
Sediment control
Grading
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.
Interior Features: Attic/House Fan, Combination Dining/Living, Dining Area, Family Room Off Kitchen, Floor Plan - Traditional, Pantry, Wood Floors, Other, Crown Moldings
Living Area Sq.Ft. Source: Assessor
Basement Information
Basement: Yes
Connecting Stairway, Daylight, Partial, Heated, Improved, Interior Access, Outside Entrance, Partially Finished, Rear Entrance, Space For Rooms, Walkout Level, Windows
Exterior
Property Information
Total Below Grade Sq. Ft.: 1648
Accessibility Features: Other
Improvement Assessed Value: $538,400
Ownership Interest: Fee Simple
Year Built Source: Assessor
Building Information
Construction Materials: Frame
Foundation Details: Other
Other Structures: Above Grade, Below Grade
Structure Type: Detached
Lot Information
Tidal Water: No
Land Information
Land Assessed Value: $498,300
Above Grade Information
Finished Sq.Ft.: 3,299
Finished Sq.Ft. Source: Assessor
Below Grade Information
Unfinished Sq.Ft.: 448
Unfinished Sq.Ft. Source: Assessor
Finished Sq.Ft.: 1,200
Finished Sq.Ft. Source: Assessor
Financial
Tax Information
County Tax: $11,440
Tax Assessed Value: $1,036,700
Tax Year: 2023
Tax Annual Amount: $12,087
Assessments Information
Year Assessed: 2023
Utilities
Utilities Information
Central Air
Cooling Type: Central A/C
Cooling Fuel: Electric
Forced Air
Heating Fuel: Oil
Hot Water: Electric
Sewer Septic: Septic = # of BR
Water Source: Public
Location
School Information
Elementary School: WAYSIDE
Middle Or Junior School: HERBERT HOOVER
High School: WINSTON CHURCHILL
School District Name: MONTGOMERY COUNTY PUBLIC SCHOOLS
Elementary School Source: Listing Agent
Middle School Source: Listing Agent
High School Source: Listing Agent
School District Source: Listing Agent
Location Information
Outside City Limits
Directions: North on I-270, take exit 5, go west on falls road, right on Wootton Parkway, left on Scott Drive, left on Overlea Drive, right on Watts Branch Drive, left on Glen Mill Road, turn left at driveway with dog sign, continue past the first house and continue down driveway to property.
Public facts
Beds: —
Baths: 3.5
Sq. Ft.: 4,499
Stories: 2.0
Lot Size: 0.95 acres
Style: Single Family Residential
Year Built: 1989
Year Renovated: —
County: Montgomery County
APN: 04 00056103
Home facts updated by county records on Oct 14, 2026
Around this home
Schools
Wayside Elementary School
Public PreK-5 • Assigned • 1.3mi
10/10
Herbert Hoover Middle School
Public 6-8 • Assigned • 2.4mi
10/10
Winston Churchill High School
Public 9-12 • Assigned • 2.6mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
6/10 Heat Factor
7 days above 102° expected this year, 16 days in 30 years
4/10 Wind Factor
13% chance of strong winds in next 30 years
3/10 Air Factor
2 unhealthy days expected this year, 3 days in 30 years
Provided by First Street
Historical weather
Potomac, MD • 20854
Average low and high temperatures (°F)
38
23
44
28
62
39
70
48
74
55
84
65
89
70
81
63
79
60
69
47
58
40
44
29
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 9.3 hours in
June and 4.1 hours in December, placing it below the
U.S. average for solar exposure.
9.3 hrs
4.1 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.51M – $1.83M
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