OFF MARKET

Off market jun 2025 for $3.7M

$3,630,143

Est. refi paymentEst. refi $23,504/mo

•

14,222

sq ft

10111 Iron Gate Rd, Potomac, MD 20854

About this home

PRICE REDUCED!! Featured Property in Washington Post and Washingtonian. Opportunity to make a deal and call this spectacular property your home! Originally Custom built by Mark Lerner, principal owner of Major League Baseball's Washington Nationals, with the highest quality commercial grade materials! • Short stroll to Potomac Village • Classical-contemporary, embassy style residence. • Easy commute to DC & Northern VA • Multi-million dollar renovation & expansion completed by the home’s original architect, JERRY HARPOLE, including extraordinary primary bed- room suite on main level & unparalleled lower level • Resort like estate situated on 2 + lush acres • Sun Drenched Cheery Home • Sophisticated infinity pool, picturesque patios & Terraces overlooking private yard • Art Deco inspired commercial home movie theatre • Elegant, flowing indoor outdoor living space • Commercial bowling alley and AMF Score System • Floor to Ceiling windows in each room unite scenic vistas with interior creating a soft, warm atmosphere within the grand spacious floorplan • Fitness room / Gym with panoramic views of the outdoors • Spectacular commercial grade kitchen with top of line Gaggenau appliances • Game room • 7 Bedrooms, 5 on the main level, all ensuite, including the Primary bedroom wing addition • Separate living area on an upper level for in law suite or guests, also perfect for Au Pair, includes a large family room, bedrooms, 2 full baths. Additional guest room with large bedroom plus full bath on lower level • 8 Full bathrooms, 4 half bathrooms • Commercial/industrial size walk in freezer and cooler • 6 Garage Spaces * Oversized 4 car garage with side entry and door leading into main level mudroom. * Additional oversized 2 car garage with side entry * Gated driveway leading to garages • All the amenities to enjoy relaxing or entertaining!

Single-familyProperty Type

1991Year Built

2.08 acresLot Size

$255Est. Price/Sq.Ft.

6 garage spacesParking

Listed by Susan Hartman • O'Conor, Mooney & Fitzgerald

•410-321-8800 (broker)

•info@oconorandmooney.com (broker)

Listed by Brady Hartman • O'Conor, Mooney & Fitzgerald

•410-321-8800 (broker)

•info@oconorandmooney.com (broker)

Bought with Unrepresented Unrepresented • Unrepresented

•844-552-7444 (broker)

•datacorrect@brightmls.com (broker)

Redfin checked: 2 minutes ago

•Source:BRIGHT MLS #MDMC2117654

Redfin Estimate

$3,630,143

$70K since sold in June 2025$128K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 10.6% higher than the average sale price ($3.28M) of 5 comparable homes.

SOLD JUL 23, 2026
$4,400,000
A
7 beds9 baths17,467 sq ft
10222 Iron Gate Rd, Potomac, MD 20854
SOLD AUG 19, 2026
$2,100,000
B
7 beds6 baths10,087 sq ft
8926 Harvest Square Ct, Rockville, MD 20854
SOLD SEP 18, 2026
$2,000,000
C
7 beds6.5 baths8,232 sq ft
10100 Iron Gate Rd, Potomac, MD 20854
SOLD JUN 30, 2026
$3,505,001
D
6 beds6 baths9,385 sq ft
8917 Harvest Square Ct, Rockville, MD 20854
SOLD AUG 10, 2026
9919 Logan Dr, Potomac, MD 20854
$4,400,000
E
7 beds8 baths11,300 sq ft
9919 Logan Dr, Potomac, MD 20854

Claim this home to receive a free report every month with insights on the changing estimate.

Earn from this home

Sell

$526,688

Est. take-home

List your home with Redfin and save $36,301

Refinance

Est. cash available

Get cash now or lower your monthly rate

Rent

$7,495/mo

Redfin rental estimate

List your home for rent

Market trends in 20854, MD

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

100.0%

0.7% MoM

Median sale price

$1.2M

$29K MoM

Avg. days on market

34d

1 days MoM

Recently sold homes

156

47 MoM

New listings for sale

COMING SOON
$2,200,000
5 beds4.5 baths5,055 sq ft
12041 Great Elm Dr, Potomac, MD 20854
(301) 652-0643
EARLY ACCESS
$889,000
4 beds2.5 baths2,272 sq ft
8413 Victory Ln, Rockville, MD 20854
OPEN SAT, 12PM TO 2PM
$1,299,900
5 beds3.5 baths3,802 sq ft
10104 Grayhorse Ct, Rockville, MD 20854
(301) 304-8444
NEW 28 HRS AGO
$3,699,000
3 beds2.5 baths4,582 sq ft
10616 Red Barn Ln, Rockville, MD 20854
(301) 516-1212
NEW 28 HRS AGO
$925,000
4 beds2.5 baths2,573 sq ft
11820 Enid Dr, Rockville, MD 20854
(301) 774-5900
OPEN SAT, 1PM TO 3PM
$930,000
3 beds3 baths2,593 sq ft
10948 Whiterim Dr, Potomac, MD 20854
(202) 545-6900
OPEN SAT, 12PM TO 2PM
$1,199,000
5 beds4.5 baths3,830 sq ft
9 Richview Ct, Rockville, MD 20854
(703) 224-6000
COMING SOON
11429 Cedar Ridge Dr, Potomac, MD 20854
$1,149,900
3 beds3.5 baths3,696 sq ft
11429 Cedar Ridge Dr, Potomac, MD 20854
(301) 445-5900
OPEN SAT, 1PM TO 3PM
$939,000
4 beds3 baths2,788 sq ft
3 Sussex Ct, Potomac, MD 20854
(703) 953-1752
OPEN SAT, 1PM TO 3PM
$2,900,000
7 beds8.5 baths10,701 sq ft
9801 Bentcross Dr, Potomac, MD 20854
(888) 860-7369
See all

Provided by Redfin

Redfin agents who toured

This home is truly one of the kind. Unique architectural design, quality finishes fantastic outdoor space
2 years ago• May not reflect the current state of the home
Agne Salgado
Redfin Premier agent
Sprawling home on 2 acres with pool, bowling alley, theatre room, etc. all bedrooms have en-suite baths including master on main floor with two bedrooms/baths upstairs.
2 years ago• May not reflect the current state of the home
Kathy Schreiber
Redfin Associate agent

Sale history for 10111 Iron Gate Rd

Date

Event

Price

Public Records

Jun 18, 2025

Sold

$3,700,000

$260/sq ft

BRIGHT MLS #MDMC2117654

Jun 5, 2025

Price Changed

$3,700,000

$260/sq ft

Jun 5, 2025

Sold

$3,700,000

$260/sq ft

Mar 5, 2025

Contingent

—

Feb 15, 2025

Price Changed

$3,995,000

$281/sq ft

Dec 6, 2024

Relisted

—

Nov 30, 2024

Contingent

—

Nov 14, 2024

Price Changed

$4,200,000

$295/sq ft

Jul 3, 2024

Price Changed

$4,398,000

$309/sq ft

Jun 21, 2024

Price Changed

$4,498,000

$316/sq ft

Feb 16, 2024

Relisted

—

Feb 6, 2024

Contingent

—

Feb 4, 2024

Listed

$4,750,000

$334/sq ft

Jan 17, 2024

Coming Soon

$4,750,000

$334/sq ft

Public Records

Apr 7, 2021

Sold

$3,700,000

$260/sq ft

BRIGHT MLS #MDMC697494

Mar 1, 2021

Sold

$3,895,000

$274/sq ft

Jan 20, 2021

Pending

—

Dec 4, 2020

Contingent

—

Aug 24, 2020

Relisted

—

Jun 23, 2020

Pending

—

May 18, 2020

Contingent

—

Feb 28, 2020

Listed

$3,995,000

$281/sq ft

+48

BRIGHT MLS #MDMC621638

Aug 30, 2019

Listing Removed

—

Mar 1, 2019

Listed

$4,995,000

$351/sq ft

Mar 1, 2019

Listing Removed

—

BRIGHT MLS #1000051295

Nov 1, 2018

Listing Removed

—

Apr 23, 2018

Price Changed

$6,750,000

$475/sq ft

Jan 30, 2017

Listed

$7,995,000

$562/sq ft

Public Records

Mar 2, 2005

Sold

$5,200,000

$366/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$50,254 (+0.2%)

$753,200 + $2,825,800

$3,579,000

2024

$50,146

$753,200 + $3,540,200

$4,293,400

2023

$50,140 (+3.7%)

$753,200 + $3,540,200

$4,293,400

2022

$48,365 (+0.2%)

$753,200 + $3,540,200

$4,293,400

2021

$48,261

$753,200 + $3,571,100

$4,324,300

2020

$48,251 (−7.5%)

$753,200 + $3,571,100

$4,324,300

2019

$52,172 (−0.6%)

$753,200 + $3,571,100

$4,324,300

2018

$52,511

$817,300 + $3,866,300

$4,683,600

2017

$52,512 (−17.4%)

$817,300 + $3,866,300

$4,683,600

2015

$63,547 (−5.7%)

$1,005,300 + $4,687,600

$5,692,900

2014

$67,412 (+6.9%)

$1,005,300 + $4,963,400

$5,968,700

2013

$63,035 (+9.6%)

2012

$57,504 (+10.1%)

2011

$52,217

2010

$52,217 (+42.3%)

2009

$36,700

Tax history for 10111 Iron Gate Rd

Year

Property tax

Land + Additions

Assessment*

2025

$50,254 (+0.2%)

$753,200 + $2,825,800

$3,579,000

2024

$50,146

$753,200 + $3,540,200

$4,293,400

2023

$50,140 (+3.7%)

$753,200 + $3,540,200

$4,293,400

2022

$48,365 (+0.2%)

$753,200 + $3,540,200

$4,293,400

2021

$48,261

$753,200 + $3,571,100

$4,324,300

2020

$48,251 (−7.5%)

$753,200 + $3,571,100

$4,324,300

2019

$52,172 (−0.6%)

$753,200 + $3,571,100

$4,324,300

2018

$52,511

$817,300 + $3,866,300

$4,683,600

2017

$52,512 (−17.4%)

$817,300 + $3,866,300

$4,683,600

2015

$63,547 (−5.7%)

$1,005,300 + $4,687,600

$5,692,900

2014

$67,412 (+6.9%)

$1,005,300 + $4,963,400

$5,968,700

2013

$63,035 (+9.6%)

2012

$57,504 (+10.1%)

2011

$52,217

2010

$52,217 (+42.3%)

2009

$36,700

*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

Stories

Lot width

—

Lot depth

—

Lot size

2.08 Acres

Year renovated

—

Sq. Ft.

14,222

Year built

1991

Style

Single Family Residential

County

Montgomery County

APN

10 00863178

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

Property details

Parking

Parking Information
# of Attached Garage Spaces: 6
Garage Features: Garage - Side Entry, Additional Storage Area, Inside Access, Garage Door Opener, Oversized
# of Total Garage and Parking Spaces: 18
Has Garage
# of Garage Spaces: 6
Driveway - # of Spaces: 12
Attached Garage, Driveway

Interior

Virtual Tour

Bedroom Information
# of Bedrooms On 1st Upper Level: 1
# of Bedrooms On Main Level: 5
# of Bedrooms On 1st Lower Level: 1

Bathroom Information
# of Bathrooms (Full) On 1st Upper Level: 2
# of Bathrooms (Half) On Main Level: 2
# of Bathrooms (Full) On Main Level: 5
# of Bathrooms (Half) On 1st Lower Level: 2
# of Bathrooms (Full) On 1st Lower Level: 1
# of Bathrooms (Full) On All Upper Levels: 2
# of Bathrooms (Half) On All Lower Levels: 2
# of Bathrooms (Full) On All Lower Levels: 1
# of Bathrooms (Half): 4
# of Bathrooms (Full): 8

Interior Information
Flooring Type: Heated, Stone, Hardwood
Living Area Sq.Ft. Source: Assessor
Wall & Ceiling Types: High, Tray Ceilings

Room Information
Laundry Type: Main Floor, Lower Floor

Fireplace Information
Has Fireplace
# of Fireplaces: 3

Basement Information
Basement: No

Exterior

Property Information
Total Below Grade Sq. Ft.: 10836
Accessibility Features: 2+ Access Exits, Other
Improvement Assessed Value: $3,540,200
Ownership Interest: Fee Simple
Property Condition: Excellent
Year Built Source: Assessor
Year Major Reno/Remodel: 2006

Building Information
Construction Materials: Concrete, Stone
Foundation Details: Permanent, Concrete Perimeter
Other Structures: Above Grade, Below Grade
Structure Type: Detached
Architect Name: Jerry Harpole

Pool Information
Personal Pool

Lot Information
Tidal Water: No

Land Information
Land Assessed Value: $753,200

Above Grade Information
Finished Sq.Ft.: 12,222
Finished Sq.Ft. Source: Assessor

Below Grade Information
Unfinished Sq.Ft.: 8,836
Unfinished Sq.Ft. Source: Assessor
Finished Sq.Ft.: 2,000
Finished Sq.Ft. Source: Assessor

Financial

Tax Information
County Tax: $49,426
Tax Assessed Value: $4,293,400
Tax Year: 2024
Tax Annual Amount: $50,146

Assessments Information
Year Assessed: 2024

Utilities

Utilities Information
Central Air
Cooling Type: Central A/C
Cooling Fuel: Electric
Central, Zoned, Other, Radiant
Heating Fuel: Natural Gas
Hot Water: Natural Gas
Sewer Septic: Public Sewer
Water Source: Public

Location

School Information
School District Name: MONTGOMERY COUNTY PUBLIC SCHOOLS
School District Source: Listing Agent

Location Information
Outside City Limits
Directions: 10111 Iron Gate

Public facts

Beds: —
Baths: 10.0
Sq. Ft.: 14,222
Stories: 2.0
Lot Size: 2.08 acres
Style: Single Family Residential
Year Built: 1991
Year Renovated: —
County: Montgomery County
APN: 10 00863178

Home facts updated by county records on Jul 18, 2026

Around this home

Schools

Seven Locks Elementary School

Public K-5 • Assigned • 2.0mi

10/10

Cabin John Middle School

Public 6-8 • Assigned • 1.5mi

9/10

Winston Churchill High School

Public 9-12 • Assigned • 1.9mi

10/10

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...
2 months ago • Potomac
Bryan Kerrigan
Redfin Premier agent
740 deals
Was this helpful?

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 103° 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)

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

$3.45M – $4.18M

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Nearby similar homes

OPEN SAT, 12PM TO 2PM

$1,299,900

5 beds3.5 baths3,802 sq ft

10104 Grayhorse Ct, Rockville, MD 20854

(301) 304-8444

3D WALKTHROUGH

$1,298,000

6 beds6 baths5,848 sq ft

10600 Vantage Ct, Potomac, MD 20854

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OPEN SUN, 1PM TO 4PM

$2,800,000

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11501 Skipwith Ln, Potomac, MD 20854

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Land— sq ft

10201 Falls Rd, Potomac, MD 20854

(202) 946-0901

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6 beds4.5 baths6,507 sq ft

10837 S Glen Rd, Potomac, MD 20854

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OPEN SAT, 2PM TO 4PM

$1,210,000

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11200 Hunt Club Dr, Potomac, MD 20854

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New listings for sale in 20854

COMING SOON

$2,200,000

5 beds4.5 baths5,055 sq ft

12041 Great Elm Dr, Potomac, MD 20854

(301) 652-0643

EARLY ACCESSREDFIN COMING SOON

$889,000

4 beds2.5 baths2,272 sq ft

8413 Victory Ln, Rockville, MD 20854

OPEN SAT, 12PM TO 2PM

$1,299,900

5 beds3.5 baths3,802 sq ft

10104 Grayhorse Ct, Rockville, MD 20854

(301) 304-8444

NEW 28 HRS AGO

$3,699,000

3 beds2.5 baths4,582 sq ft

10616 Red Barn Ln, Rockville, MD 20854

(301) 516-1212

NEW 28 HRS AGO

$925,000

4 beds2.5 baths2,573 sq ft

11820 Enid Dr, Rockville, MD 20854

(301) 774-5900

OPEN SAT, 1PM TO 3PM

$930,000

3 beds3 baths2,593 sq ft

10948 Whiterim Dr, Potomac, MD 20854

(202) 545-6900

OPEN SAT, 12PM TO 2PM

$1,199,000

5 beds4.5 baths3,830 sq ft

9 Richview Ct, Rockville, MD 20854

(703) 224-6000

COMING SOON

$1,149,900

3 beds3.5 baths3,696 sq ft

11429 Cedar Ridge Dr, Potomac, MD 20854

(301) 445-5900

OPEN SAT, 1PM TO 3PM

$939,000

4 beds3 baths2,788 sq ft

3 Sussex Ct, Potomac, MD 20854

(703) 953-1752

Home values near 10111 Iron Gate Rd

Data from public records.

Address	Redfin Estimate
10200 Iron Gate Road, Rockville, MD 5 Beds \| 7.5 Baths \| 8500 Sq. Ft.	$2,780,779
10301 Iron Gate Road, Potomac, MD 5 Beds \| 8 Baths \| 6673 Sq. Ft.	$2,489,679

Address	Redfin Estimate
10207 Iron Gate Road, Potomac, MD 4 Beds \| 6.5 Baths \| 7300 Sq. Ft.	$2,723,303
10000 Iron Gate Road, Potomac, MD 5 Beds \| 3.5 Baths \| 3346 Sq. Ft.	$1,876,113

Address	Redfin Estimate
10116 Iron Gate Road, Rockville, MD 5 Beds \| 6 Baths \| 5278 Sq. Ft.	$2,583,912
10105 Iron Gate Road, Potomac, MD 8 Beds \| 8.5 Baths \| 12181 Sq. Ft.	$4,298,935

Property information provided by BRIGHT MLS when last listed in 2024. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 20854, MD

Redfin agents who toured

Sale history for 10111 Iron Gate Rd

Tax history for 10111 Iron Gate Rd

Public record

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 20854

Home values near 10111 Iron Gate Rd

More real estate resources