448 21st Street

Santa Monica CA 90402

7311 sq. ft.

8954 sq. ft.

Single-Family

Last sold for $11,415,000

Daniel Brown, last sold this property on 01 October 2026 after 27 days on market.

Overview

Rare offering in coveted Gillette Regent Square, North of Montana one of the Westside's most sought-after enclaves. Gated driveway and lush, gorgeous landscaping welcomes you to a white brick traditional residence with incredible natural light and white oak floors throughout. Indoor-outdoor connectivity, big windows and high ceilings brings the outside greenery in. Chef's kitchen: marble island/counters, breakfast area, Viking 8-burner range, Sub-Zero fridge/freezer, farmhouse sink + prep sink, full walk-in pantry. Dining room w/ coffered ceilings & wainscoting. Main-level guest suite/office. Upstairs: landing den w/ built-in double length desk, primary suite w/ two walk-in closets, his & her loo, radiant heated marble floors & a large terrace with fireplace. Three additional en-suite bedrooms, each w/ walk-in closet & white marble bathrooms. Custom fixtures, window coverings & upstairs laundry room. Basement level: soaring ceilings, glass doors, media room w/ theater seating, pro gym, built-in bar, temp controlled wine room, full bath doubling as pool bath, plus additional en-suite guest bedroom and bath. Outdoor entertaining at its finest: pizza oven, Wolf grill, outdoor fridge, sink & bar seating, pool w/ automatic cover, swim jets for laps & a custom mosaic on the pool floor. Mature hedges provide complete privacy while the yard basks in incredible natural light, with sun on the pool all afternoon. Covered cabana lounge & heated covered dining area, outdoor shower and beautiful Blue stone hardscape. Crestron automation entertainment system, pebble garage floor with built-ins, custom lighting and security system.

Features

6 bedrooms

8 bathrooms

4 carspaces

2 open car spaces

1 garage space

7311 sq. ft. floor area

8954 sq. ft. lot size

Single-Family

Estimated Value

Based on this property and similar 6 bedroom single-family properties sold in Santa Monica over the last 12 months, the estimated median property value of 448 21st Street is $7.28m.

Median value

$7.28m

Estimated value range

$3.9m - $11.41m

Median days on market

Estimated value trend

increase over the last 12 months

Average days on market is based on recent, comparable sales in Santa Monica. It is only an indication of the time a property is actively listed and should not be relied upon as an accurate representation of how soon a property will be sold.

Property history for 448 21st Street

2026

Sold

$11,415,000

01 Oct 2026 by Daniel Brown, of Compass

Happy sellers in Santa Monica

We have insufficient information to provide an overview of customer satisfaction for Santa Monica. Viewing the agent profiles, reviews and sales for Santa Monica can provide insights for this location.