7405 Helmsdale Rd Bethesda, MD 20817
Bannockburn NeighborhoodEstimated payment $19,263/month
Highlights
- Gourmet Kitchen
- Open Floorplan
- Two Story Ceilings
- Bannockburn Elementary School Rated A
- Contemporary Architecture
- Wood Flooring
About This Home
NEW PRICE 9/11!
Iconic NaCl House – A Modern Architectural Masterpiece
Discover the award-winning NaCl House, an architectural gem designed by internationally acclaimed architect David Jameson. Located at 7405 Helmsdale Road in Bethesda, MD, this striking residence was inspired by the natural isometric formation of mineral rock salt. Completed in 2011, the home features a bold, Tetris-like arrangement of white stucco volumes accented with flush-glazed panels, creating a seamless integration of interior and exterior spaces. For the discerning buyer seeking a truly exceptional residence, this award-winning home is a rare opportunity to own a landmark of modern design. Honored with a 2014 Residential Architect Magazine Design Award, the property stands as a testament to modernist ingenuity and visionary craftsmanship.
Inside, the approximately 4,860-square-foot residence offers thoughtfully designed living spaces centered around a striking double-height living room. This open and fluid layout invites both grand entertaining and intimate moments. Crisp white walls and light ash floors create a minimalist elegance that perfectly complement the expansive floor-to-ceiling windows and sleek glass railings. These elements flood the interiors with abundant natural light, enhancing the home’s bright and airy ambiance. The careful interplay of space and light reflects the architect’s intention to craft a home that feels both dynamic and serene.
Originally built on the foundation of an earlier structure, the home was completely reimagined in 2011, blending modern elegance with structural innovation. Situated on a tranquil half-acre lot, in the sought-after neighborhood Bannockburn Estates in Bethesda, MD, the NaCl House combines architectural splendor with a serene natural setting. This exceptional property features luxurious finishes throughout, including a commanding mahogany front door and elevator, servicing all levels.
Owning this iconic property is a rare opportunity to live in a true piece of architectural history - where luxury, design, and lifestyle seamlessly merge.
Home Details
Home Type
- Single Family
Est. Annual Taxes
- $15,385
Year Built
- Built in 2011
Lot Details
- 0.52 Acre Lot
- West Facing Home
- Property is in excellent condition
- Property is zoned R200
Parking
- 2 Car Attached Garage
- Oversized Parking
- Front Facing Garage
- Driveway
Home Design
- Contemporary Architecture
- Stucco
Interior Spaces
- Property has 3 Levels
- 1 Elevator
- Open Floorplan
- Two Story Ceilings
- Ceiling Fan
- Recessed Lighting
- 2 Fireplaces
- Wood Burning Fireplace
- Gas Fireplace
- Family Room Off Kitchen
- Wood Flooring
- Garden Views
Kitchen
- Gourmet Kitchen
- Breakfast Area or Nook
- Double Oven
- Down Draft Cooktop
- Dishwasher
- Stainless Steel Appliances
- Kitchen Island
- Disposal
Bedrooms and Bathrooms
- 4 Bedrooms
- En-Suite Bathroom
- Walk-In Closet
Laundry
- Laundry on upper level
- Dryer
- Washer
Basement
- Partial Basement
- Garage Access
- Basement Windows
Accessible Home Design
- Accessible Elevator Installed
- Halls are 36 inches wide or more
Outdoor Features
- Patio
- Exterior Lighting
Schools
- Bannockburn Elementary School
- Thomas W. Pyle Middle School
- Walt Whitman High School
Utilities
- Forced Air Heating and Cooling System
- Natural Gas Water Heater
- Municipal Trash
Listing and Financial Details
- Tax Lot 6
- Assessor Parcel Number 160700685740
Community Details
Overview
- No Home Owners Association
- Bannockburn Estates Subdivision
Recreation
- Community Pool
Map
Home Values in the Area
Average Home Value in this Area
Tax History
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2025 | $15,385 | $1,374,200 | $776,900 | $597,300 |
| 2024 | $15,385 | $1,261,100 | $0 | $0 |
| 2023 | $13,253 | $1,148,000 | $0 | $0 |
| 2022 | $8,341 | $1,034,900 | $706,200 | $328,700 |
| 2021 | $11,352 | $1,033,333 | $0 | $0 |
| 2020 | $11,352 | $1,031,767 | $0 | $0 |
| 2019 | $11,293 | $1,030,200 | $706,200 | $324,000 |
| 2018 | $11,230 | $1,030,200 | $706,200 | $324,000 |
| 2017 | $11,749 | $1,030,200 | $0 | $0 |
| 2016 | $8,523 | $1,036,800 | $0 | $0 |
| 2015 | $8,523 | $964,200 | $0 | $0 |
| 2014 | $8,523 | $891,600 | $0 | $0 |
Property History
| Date | Event | Price | Change | Sq Ft Price |
|---|---|---|---|---|
| 09/11/2025 09/11/25 | Price Changed | $3,375,000 | -3.6% | $807 / Sq Ft |
| 07/11/2025 07/11/25 | Price Changed | $3,500,000 | -7.8% | $837 / Sq Ft |
| 06/17/2025 06/17/25 | For Sale | $3,795,000 | -- | $908 / Sq Ft |
Purchase History
| Date | Type | Sale Price | Title Company |
|---|---|---|---|
| Deed | $1,030,000 | -- | |
| Deed | $1,030,000 | -- |
Mortgage History
| Date | Status | Loan Amount | Loan Type |
|---|---|---|---|
| Open | $354,500 | Adjustable Rate Mortgage/ARM | |
| Closed | $409,763 | Stand Alone Second | |
| Closed | $417,000 | Stand Alone Second | |
| Open | $700,000 | Purchase Money Mortgage | |
| Closed | $700,000 | Purchase Money Mortgage |
Source: Bright MLS
MLS Number: MDMC2185718
APN: 07-00685740
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