409 21st Street
Santa Monica, CA 90402
Map
- 4 beds
- 7 baths
- 6,860 sqft
- 8,960 sqft lot
- $1,821 per sqft
- 2024 build
- – on site
Set in the esteemed North of Montana neighborhood of Santa Monica on a nearly 9,000 SF oversized lot, this custom-built new construction blends quality craftsmanship with exceptional amenities and scale. Spanning 6,860 SF with 4 bedrooms + office and 7 bathrooms across three levels, this home delivers seamless indoor-outdoor flow and expansive spaces built for elevated living and entertaining. The main level offers soaring ceilings and expansive living spaces, including a formal living room, dining room, dedicated office, and an open-concept kitchen outfitted with bespoke cabinetry, butler's pantry, and Miele, Sub-Zero, and Wolf appliances. Fleetwood doors connect the interiors to a private backyard retreat featuring a heated pool and spa with automatic cover, a built-in BBQ and pizza oven, and multiple zones for dining and lounging. Upstairs, wide-plank oak flooring leads to three generously sized en-suite bedrooms, including a reimagined primary suite with a newly expanded oversized walk-in closet. The amenity-rich basement level includes a lounge and bar, movie theater, wine cellar, guest suite, and full spa with both wet and dry saunas. Mature ficus trees line the front of the home for added privacy and additional highlights include solar panels, multi-zone climate control, Control4 smart home system, and a three-car garage. Located just moments from Montana Avenue, San Vicente, and Brentwood Country Club, this home offers a rare opportunity to enjoy scale, privacy, and convenience in one of the Westside's most sought-after neighborhoods.
Last checked:
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Last updated Jul 9, 2025
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MLS# 25561409 —
This home is listed in more than one place. See it here.
The Building
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Year Built:2024
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Year Built Source:Seller
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New Construction:Yes
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Architectural Style:Spanish
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Stories Total:3
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Entry Level:1
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Common Walls:No Common Walls
Interior
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Levels:Three Or More
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Flooring:Tile
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Room Type:Sauna, Walk-In Closet, Wine Cellar, Den, Office, Living Room, Great Room, Home Theatre
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Fireplace:Yes
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Fireplace:Living Room, Den
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Laundry:Washer Included, Dryer Included, Inside
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Laundry:1
Room Dimensions
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Living Area:6860.00
Location
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Directions:Cross streets of 21st Street and Marguerita Avenue in the North of Montana neighborhood in Santa Monica
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Latitude:34.04161300
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Longitude:-118.49354400
The Property
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Property Type:Residential
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Subtype:Single Family Residence
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Zoning:SMR1*
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Lot Size Area:8960.0000
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Lot Size Dimensions:60x149
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Lot Size Acres:0.2057
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Lot Size SqFt:8960.00
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View:None
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Security Features:Fire Sprinkler System, Smoke Detector(s), Carbon Monoxide Detector(s)
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Land Lease:No
Listing Agent
- Contact info:
- No listing contact info available
Beds
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Total Bedrooms:4
Baths
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Total Baths:7
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Full & Three Quarter Baths:5
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Full Baths:5
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Half Baths:2
The Listing
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Special Listing Conditions:Standard
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Parcel Number:4278028015
Heating & Cooling
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Heating:1
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Heating:Central
Appliances
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Appliances:Barbecue, Dishwasher, Disposal, Microwave, Refrigerator
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Included:Yes
The Community
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Association:No
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Pool:Heated
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Senior Community:No
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Spa:1
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Assessments:No
Parking
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Parking:Yes
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Parking:Private, Driveway
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Parking Spaces:4.00
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Uncovered Spaces:2.00
Monthly cost estimate
Asking price
$12,495,000
| Expense | Monthly cost |
|---|---|
|
Mortgage
This calculator is intended for planning and education purposes only. It relies on assumptions and information provided by you regarding your goals, expectations and financial situation, and should not be used as your sole source of information. The output of the tool is not a loan offer or solicitation, nor is it financial or legal advice. |
$66,906
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| Taxes | N/A |
| Insurance | $3,436 |
| Utilities | $232 See report |
| Total | $70,574/mo.* |
| *This is an estimate |
Walk Score®
Provided by WalkScore® Inc.
Walk Score is the most well-known measure of walkability for any address. It is based on the distance to a variety of nearby services and pedestrian friendliness. Walk Scores range from 0 (Car-Dependent) to 100 (Walker’s Paradise).
Bike Score®
Provided by WalkScore® Inc.
Bike Score evaluates a location's bikeability. It is calculated by measuring bike infrastructure, hills, destinations and road connectivity, and the number of bike commuters. Bike Scores range from 0 (Somewhat Bikeable) to 100 (Biker’s Paradise).
Transit Score®
Provided by WalkScore® Inc.
Transit Score measures a location's access to public transit. It is based on nearby transit routes frequency, type of route (bus, rail, etc.), and distance to the nearest stop on the route. Transit Scores range from 0 (Minimal Transit) to 100 (Rider’s Paradise).
Air Pollution Index
Provided by ClearlyEnergy
The air pollution index is calculated by county or urban area using the past three years data. The index ranks the county or urban area on a scale of 0 (best) - 100 (worst) across the United Sates.
Sale history
| Date | Event | Source | Price | % Change |
|---|---|---|---|---|
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7/7/25
Jul 7, 2025
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Listed / Active | CRMLS_CA | $12,495,000 | 204.8% (56.1% / YR) |
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1/28/25
Jan 28, 2025
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Listed / Active | BRIDGE | ||
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9/19/24
Sep 19, 2024
|
Listed / Active | BRIDGE |
