7405 Helmsdale Road

Closed 7/23/26Virtual Tour

Sold

Last Sold Price

$3,100,000

5 beds5 baths6,336 sqft

7405 Helmsdale Rd, Bethesda, MD 20817

Single FamilyProperty Type

0.52 acresLot Size

2011Year Built

$489/sq ftPrice per sq ft

2 carsParking Spaces

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, recipient of a 2014 Residential Architect Magazine Design Award for this project, 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...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, recipient of a 2014 Residential Architect Magazine Design Award for this project, 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. Widely recognized for its architectural significance, the NaCl House remains one of the region's most compelling modern residences. The result is architecture that remains expressive, rigorous, and remarkably controlled, rewarding its residents with continual moments of discovery.

Listed by: Ronald B Mangas Jr. 703.298.2564 rmangas@ttrsir.com • TTR Sothebys International Realty

Listing closed: 07/23/2026 12:00 AM • Source: BRIGHT, MLS#: MDMC2233412

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$17,418 per month

30 year fixed, 6.71% Interest

Principal and Interest

$16,019

Property Taxes

$1,399

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Property Information for 7405 Helmsdale Road

Property Details

Taxes: $16,785 / year
MLS Type: Residential / Fee Simple
County: Montgomery County
Tax ID Number: 160700685740
Ownership: Fee Simple
Condo Coop Association: No
HOA: No
Structure Type: Detached
Style: Contemporary, Mid-Century Modern
Levels/Stories: 3
Waterfront: No
Views: Garden/Lawn
Garage: Yes
Subdivision: BANNOCKBURN ESTATES
Subdivision: BANNOCKBURN ESTATES (MONTGOMERY MD)
Cross Street: Nevis
Legal Subdivision: BANNOCKBURN ESTATES
Total Parking Spaces: 2
Central Air: Yes
Basement: Yes
Above Grade Finished SQFT: 5,190.00
Above Grade Fin SQFT Source: Assessor
Below Grade Finished SQFT: 1,146.00
Below Grade Fin SQFT Source: Assessor
Total Below Grade SQFT: 1,146.00
Total Below Grade SQFT Source: Assessor
New Construction: No
Property Condition: Excellent

Building Information

Stories: 3
Year Built: 2011
Lot Size: 0.52 AC / 22,492 SF

Location

In City Limits: No
School District Name: MONTGOMERY COUNTY PUBLIC SCHOOLS

School District County ID: 121138126809
Elementary School: BANNOCKBURN (MONTGOMERY MD)
Middle Or Junior School: THOMAS W. PYLE (MONTGOMERY MD)
High School: WALT WHITMAN (MONTGOMERY MD)
County: MONTGOMERY

Waterfront / Water Access

Water View: No
Water Access: No

Water Oriented: No
Navigable Water: No
Tidal Water: No
Riparian Rights Y/N: No

Association / Community Info

Senior Community: No

Taxes and Assessment

Tax Year: 2026
Tax Assessed Value: $1,600,667

Year Assessed: 2026
County Tax: $15,820
Improvement Assessed Value: $1,275,700
Land Assessed Value: $777,900
Front Foot Fee: $0
Front Foot Fee Payment Frequency: Annually
Land Use Code: R
Refuse Fee: $671
Agricultural Tax Due: No
Zoning: R200
Tax Lot: 6
School Tax: $0
Tax Page Number: 184
Automatically Update Tax Values Y/N: No

Lease Information

Pets Allowed: Yes
Pet Restrictions: No Pet Restrictions

Rooms

Main

# Bedrooms Count Main Level: 0
# Bathrooms Count Main Level: 1

# Bathrooms Full Main Level: 0
# Bathrooms Half Main Level: 1

All Upper Levels

# Bedrooms Count All Upper Levels: 4
# Bathrooms Count All Upper Levels: 3

# Bathrooms Full All Upper Levels: 3

Upper Level 1

# Bedrooms Count Upper Level: 4
# Bathrooms Count Upper Level: 3

# Bathrooms Full Upper Level: 3

All Lower Levels

# Bedrooms All Lower Levels: 1
# Bathrooms All Lower Levels: 1

# Bathrooms Full All Lower Levels: 1

Lower Level 1

# Bedrooms Lower Level: 1
# Bathrooms Lower Level: 1

# Bathrooms Full Lower Level: 1

Rooms

Stories: Lower 1, Main, Upper 1

Building Info

Total Finished SQFT: 6,336.00
Total Finished SQFT Source: Assessor

Tax Total Finished SQFT: 6,336.00
Total SQFT: 6,336.00
Total SQFT Source: Assessor
Elevators Count: 1
Main Entrance Orientation: West
Construction Materials: Stucco
Roof: Flat, Rubber
Ext Main Mid-res: http://bright-media02.prd.brightmls.com/bright/images/0000/8049/1244/1402/804912441402_2048_1536_NgJj_S5dwroLovoj.jpg
Wall and Ceiling Types: 2 Story Ceilings, 9'+ Ceilings
Flooring Type: Hardwood
Basement Type: Fully Finished, Interior Access, Walkout Level, Windows, Garage Access
Foundation Details: Other
Room and Floor: Bathrooms Half-Main Level-1, Bedrooms-Upper Level 1-1, Bedrooms-Upper Level 1-2, Bedrooms-Upper Level 1-3, Bedrooms-Upper Level 1-4, Bedrooms-Lower Level 1-1, Bathrooms Full-Upper Level 1-1, Bathrooms Full-Upper Level 1-2, Bathrooms Full-Upper Level 1-3, Bathrooms Full-Lower Level 1-1
# Bathrooms Full: 4
# Bathrooms Half: 1
Other Structure: Above Grade, Below Grade

Lot / Land Information

Lot Size Source: Estimated
Parcel ID: 13877595

Ground Rent Exists: No

Parking

Type Of Parking: Attached Garage, Driveway
Num of Attached Garage Spaces: 2

Total Garage Spaces: 2
Garage Features: Garage - Front Entry, Oversized

Interior Features

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

Fireplaces Count: 2
Fireplace Features: Gas/Propane, Wood
Appliances: Cooktop - Down Draft, Dishwasher, Disposal, Dryer, Oven - Double, Refrigerator, Stainless Steel Appliances, Washer, Water Heater
Accessibility Features: 36"+ wide Halls, Elevator
Security Features: Electric Alarm
Laundry Type: Upper Floor
Virtual Tour URL Unbranded: https://youtu.be/w99KQGGhzew?si=J1M0_Ng1MweFxjuD

Exterior Features

Spa: No
Exterior Features: Exterior Lighting

Outdoor Living Structures: Patio(s)
Pool: Yes - Community

Utilities

Heating: Yes
Cooling Type: Central A/C

Cooling Fuel: Electric
Heating Type: Forced Air
Heating Fuel: Natural Gas
Hot Water: Natural Gas
Water Source: Public
Sewer Septic: Public Sewer

Confidential Data

Listing Office

List Agent AOR: Northern Virginia Association of REALTORS
List Agent URL: www.listmodern.com

Property History for 7405 Helmsdale Road

Date	Event & Source	Price	Appreciation
Jul 23, 2026	Closed BRIGHT #MDMC2233412	$3,100,000	—
Jun 11, 2026	Pending BRIGHT #MDMC2233412		—
May 12, 2026	Listed (Active) BRIGHT #MDMC2233412	$3,250,000	—
Dec 31, 2025	Expired BRIGHT #MDMC2185718		—
Oct 15, 2025	Withdrawn BRIGHT #MDMC2185718		—
Sep 11, 2025	Price Change BRIGHT #MDMC2185718	$3,375,000	—
Jul 11, 2025	Price Change BRIGHT #MDMC2185718	$3,500,000	—
Jun 17, 2025	Listed (Active) BRIGHT #MDMC2185718	$3,795,000	—
Jun 10, 2025	Listed (Active) BRIGHT #MDMC2185718	$3,795,000	—
Aug 1, 2007	Closed (Public Record) Public Record #224876514	$1,030,000	—

Date	Event & Source	Price
07/23/2026	Closed BRIGHT #MDMC2233412	$3,100,000
06/11/2026	Pending BRIGHT #MDMC2233412	—
05/12/2026	Listed (Active) BRIGHT #MDMC2233412	$3,250,000
12/31/2025	Expired BRIGHT #MDMC2185718	—
10/15/2025	Withdrawn BRIGHT #MDMC2185718	—
09/11/2025	Price Change BRIGHT #MDMC2185718	$3,375,000
07/11/2025	Price Change BRIGHT #MDMC2185718	$3,500,000
06/17/2025	Listed (Active) BRIGHT #MDMC2185718	$3,795,000
06/10/2025	Listed (Active) BRIGHT #MDMC2185718	$3,795,000
08/01/2007	Closed (Public Record) Public Record #224876514	$1,030,000

For completeness, we often displays two records for one sale: the MLS record and the public record.

Public Records for 7405 Helmsdale Road

Taxable ValueLand-Additions-Total-

Tax Record2025$16,093 ($1,341 / month)

Home Facts

Beds0Baths4.5Total Finished SqFt7,482 SqFtAbove Grade Finished SqFt6,336 SqFtFinished Basement SqFt1,146 SqFtStories2Lot Size22,492 SqFtStyleSingle Family ResidenceYear Built1960Year Renovated1960ZoningR200CountyMONTGOMERYAPN07-00685740

Schools near 7405 Helmsdale Road

This home is within Montgomery County Public Schools.


Rating	School	Type	Grades	Distance
9/10	Bannockburn Elementary School	Public - Serves this home	K to 5	1.0 mi
10/10	Thomas W. Pyle Middle School	Public - Serves this home	6 to 8	1.1 mi
9/10	Walt Whitman High School	Public - Serves this home	9 to 12	1.2 mi
NR	Stephen Knolls School	Public - Choice school	PK to 12	6.2 mi
NR	Carl Sandburg Center	Public - Choice school	K to 5	6.6 mi
NR	Thomas Edison High School Of Technology	Public - Choice school	9 to 12	6.8 mi
NR	The Primary Day School	Private - Nearby school	PK to 2	0.2 mi
NR	Holton-Arms School	Private - Nearby school	3 to 12	0.5 mi
NR	St. Bartholomew School	Private - Nearby school	K to 8	0.5 mi


Rating	School	Distance
9/10	Bannockburn Elementary School PublicK to 5 Serves this home	1.0 mi
10/10	Thomas W. Pyle Middle School Public6 to 8 Serves this home	1.1 mi
9/10	Walt Whitman High School Public9 to 12 Serves this home	1.2 mi
NR	Stephen Knolls School PublicPK to 12 Choice school	6.2 mi
NR	Carl Sandburg Center PublicK to 5 Choice school	6.6 mi
NR	Thomas Edison High School Of Technology Public9 to 12 Choice school	6.8 mi
NR	The Primary Day School PrivatePK to 2 Nearby school	0.2 mi
NR	Holton-Arms School Private3 to 12 Nearby school	0.5 mi
NR	St. Bartholomew School PrivateK to 8 Nearby school	0.5 mi

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

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Nearby home values

Address	Sold price	Beds	Baths	Sqft	Lot (Sqft)
This home: 7405 Helmsdale Road, Bethesda, MD 20817	$3,100,000	5	5	6,336	22,492
7401 Helmsdale Road, Bethesda, MD 20817	–	–	4.5	4,764	22,336
7409 Helmsdale Road, Bethesda, MD 20817	$3,399,000	7	8	7,968	20,000
7219 Loch Lomond Drive, Bethesda, MD 20817	$2,600,000	5	7	7,030	20,131
7408 Helmsdale Road, Bethesda, MD 20817	–	–	4	3,340	27,402
7400 Helmsdale Road, Bethesda, MD 20817	–	–	5.5	5,083	23,371
7404 Haddington Place, Bethesda, MD 20817	$2,500,000	6	7	6,700	21,683
7400 Haddington Place, Bethesda, MD 20817	$935,000	–	4.5	4,647	21,207
7412 Helmsdale Road, Bethesda, MD 20817	–	–	3	3,449	31,046
7417 Helmsdale Road, Bethesda, MD 20817	–	–	4.5	5,338	20,000
7416 Haddington Place, Bethesda, MD 20817	$800,000	–	3	2,673	20,000
7416 Helmsdale Road, Bethesda, MD 20817	–	–	3.5	3,290	32,008
7316 Helmsdale Road, Bethesda, MD 20817	$5,695,000	5	8	8,185	31,856
7206 Loch Lomond Drive, Bethesda, MD 20817	$1,900,000	5	7	5,427	26,000
7409 Haddington Place, Bethesda, MD 20817	$1,274,500	4	4	3,126	20,000
7224 Selkirk Drive, Bethesda, MD 20817	$898,000	5	4	–	21,591

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Listing Courtesy of TTR Sothebys International Realty

© 2026 Bright MLS. All rights reserved. All information is deemed reliable, but accuracy is not guaranteed. Listing information is from various brokers who participate in IDX and not all listings may be visible on the site. The property information being provided is for the consumer’s personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated on 07/28/2026 09:51 AM

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