Date
Details
Price
Change
Source
5/12/2026
Listed
$3,250,000
—
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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$3,250,000 Just Listed
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Property Description
A home first experienced as sculpture, provoking curiosity before comprehension. It does not reveal itself immediately, and the closer you look, the more it rewards. Designed by architect David Jameson, the internationally published NaCl House explores geometry, light, projection, and proportion with extraordinary discipline and control. A beautiful object within the landscape, the home avoids the visual heaviness of the typical contemporary build from the very first approach. Despite spanning three finished levels, its gravity-defying massing and dramatic cantilevered forms allow the structure to settle into the site with composure. Deep overhangs and hovering volumes manipulate natural light throughout the day, allowing the home to extend dramatically beyond its original footprint while preserving more of the site. Shadow, compression, openness, and proportion recalibrate constantly through movement within the home. Walls of glass frame the surrounding landscape with restraint and clarity, while rich mahogany millwork and custom cabinetry introduce warmth and material depth. Volumes stretch unexpectedly, openings appear with exact intention, and even transitional spaces feel carefully authored. Four bedrooms are positioned upstairs, including an exceptional primary suite with some of the home's most dramatic architectural moments, from a soaring private sitting room to a shower that opens to the sky. On the main level, two dedicated home offices support focused work and retreat. The lower level includes a family room, guest suite, and elevator access to all three floors. The residence reveals itself gradually through movement, shadow, materiality, and sequence. The result is architecture that remains expressive, rigorous, and remarkably controlled, rewarding its residents with continual moments of discovery.
Full Property Details
Full Property Details for 7405 Helmsdale Rd
General
- Price: $3,250,000
- Taxes: $16,785 (2026)
- Status: Active
- Type: Single Family
- Source: BrightMLSMidAtlantic
- MLS ID: MDMC2233412
- Updated: Today (5/12/2026)
- Added to Site: Today
Interior
- Interior Features: Breakfast Area, Ceiling Fan(s), Elevator, Family Room Off Kitchen, Floor Plan - Open, Kitchen - Gourmet, Kitchen - Island, Primary Bath(s), Recessed Lighting, Walk-in Closet(s), Wood Floors
- Fireplace: Yes
- Number of Fireplaces: 2
- Fireplace(s): Gas/Propane, Wood
- Appliances: Cooktop - Down Draft, Dishwasher, Disposal, Dryer, Oven - Double, Refrigerator, Stainless Steel Appliances, Washer, Water Heater
- Flooring: Hardwood
Rooms
Bathrooms
- Total Bathrooms: 5
- Full Bathrooms: 4
- Half Bathrooms: 1
- Upper Floor Baths: 3
- Upper - Full Baths: 3
- Main Floor Baths: 1
- Main - 1/2 Baths: 1
- Lower Floor Baths: 1
- Lower - Full Baths: 1
Bedrooms
- Total Bedrooms: 5
- Bedrooms Upper: 4
- Bedrooms Lower: 1
Other Rooms
- Laundry: Upper Floor
Additional Information
- Shared Pool: Yes
- Pool: Yes
- Security/Safety: Electric Alarm
Exterior
- Exterior Features: Exterior Lighting
- Porch/Patio/Deck: Patio(s)
Parking
- Garage: Yes
- Garage Spaces: 2
- Total Spaces: 2
- Parking Type: Attached Garage, Driveway
- Garage Description: Garage - Front Entry, Oversized
Location
- County: MONTGOMERY
- Subdivision: BANNOCKBURN ESTATES
- Cross Streets: Nevis
- Driving Directions: From Nevis, head North, House is on the Right.
- Direction Faces: West
School Information
- School District: Montgomery County Public Schools
- Elementary School: Bannockburn
- Middle School: Thomas W. Pyle
- High School: Walt Whitman
Community
- Pets Allowed: Yes
- Pets: No Pet Restrictions
Heating & Cooling
- Central air: Yes
- Cooling Type: Central A/C
- Cooling Fuel: Electric
- Heating Type: Forced Air
- Heating Fuel: Natural Gas
- Water Heater: Natural Gas
Utilities
- Sewer: Public Sewer
- Water: Public
Structural Information
- Architectural Style: Contemporary, Mid-Century Modern
- Structure Type: Detached
- Architect: David Jameson
- Construction: Stucco
- Basement: Yes
- Basement Desc.: Fully Finished, Interior Access, Walkout Level, Windows, Garage Access
- Foundation: Other
- Roof: Flat, Rubber
- Walls/Ceilings: 2 Story Ceilings, 9'+ Ceilings
- Elevator(s ): 1
- Stories Description: Lower 1, Main, Upper 1
- Square Feet: 6,336
- Sq. Ft. Source: Assessor
- Living Area: 6,336 Sq. Ft.
- Finished Above Grnd: 5,190 Sq. Ft.
- Finished Below Grnd: 1,146 Sq. Ft.
- Year Built: 2011
- Year Built Source: Estimated
- Property Condition: Excellent
Unit Information
Unit 1
- Bathrooms-Lower: 1
- Bedrooms-Lower: 1
Lot Features
- Property View: Garden/Lawn
- Lot Size (Acres): 0.52
- Lot Size (Sq. Ft.): 22,492
- Lot Size Source: Estimated
- Zoning: R200
Financial Considerations
- Price Per Sq. Ft.: $626.2
- Assessment Year: 2026
- County Tax: $15,820
- County Tax Freq: Annually
- Tax w/Assessment: $1,600,667
- Tax Amount: $16,785
- Tax Year: 2026
- Tax Total Finished Sq. Ft.: 6336
Disclosures and Reports
- Ownership: Fee Simple
- Lot Number: 6
Listed by TTR Sothebys International Realty, Ronald B Mangas Jr.
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Listing agent
— 7405 Helmsdale Rd —
Ronald B Mangas Jr.
TTR Sothebys International Realty
NMLS#: 1598647Get Pre-Approved Today
Schools
Schools serving 7405 Helmsdale Rd
School District:Montgomery County Public Schools, Gaithersburg, MD
| Name | Grades | Distance |
|---|---|---|
Bannockburn Elementary School 6520 Dalroy Lane, Bethesda, MD 20817 | K-5 | 1 mi |
Thomas W. Pyle Middle School 6311 Wilson Lane, Bethesda, MD 20817 | 6-8 | 1.1 mi |
Walt Whitman High School 7100 Whittier Boulevard, Bethesda, MD 20817 | 9-12 | 1.2 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 7405 Helmsdale Rd
Tax History
Tax History for 7405 Helmsdale Rd
Year
Property Taxes
Change
Tax Assessment
Change
2025
$16,093
5%
$1,374,200
9%
2024
$15,385
34%
$1,261,100
10%
2022
$11,501
38%
$1,148,000
11%
2022
$8,341
-27%
$1,034,900
—
2018
$11,381
—
$1,033,333
—
2021
$11,352
1%
$1,031,767
—
2020
$11,293
1%
$1,030,200
—
2019
$11,230
-2%
$1,030,200
—
2018
$11,426
-3%
$1,030,200
-1%
2017
$11,749
12%
$1,036,800
8%
2016
$10,523
8%
$964,200
8%
2015
$9,751
8%
$891,600
9%
2014
$9,044
—
$819,000
—
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 7405 Helmsdale Rd
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- Single Family
- Active
- Updated 3 days ago
- 5Beds
- 5Total Baths
- 5,160Sq. Ft.
- Single Family
- Active
- Updated 1 day ago
- 5Beds
- 4Total Baths
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- Single Family
- Active
- Updated 3 days ago
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- Updated 2 days ago
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- Condo
- Active
- Updated 14 hours ago
- 2Beds
- 1Total Bath
- 1,060Sq. Ft.
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- Updated 2 days ago
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- 1Total Bath
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- Condo
- Active
- Updated 1 day ago
- 3Beds
- 5Total Baths
- 4,040Sq. Ft.
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7405 Helmsdale Road, Bethesda, MD 20817 (MLS# MDMC2233412) is a Single Family property with 5 bedrooms, 4 full bathrooms and 1 partial bathroom. 7405 Helmsdale Road is currently listed for $3,250,000 and was received on May 12, 2026. Want to learn more about 7405 Helmsdale Road? Do you have questions about finding other Single Family real estate for sale in Bethesda? You can browse all Bethesda real estate or contact a Coldwell Banker agent to request more information.