Condominium living in Santa Monica.
21st at Montana is a compact six-unit condominium at 853 21st Street in Santa Monica, completed in 2010. The two-story building was designed by architect William Hefner in a modern architectural idiom, with controlled access and HOA-maintained landscaping. Its small unit count and design pedigree make it a boutique alternative to the neighborhood's larger condo developments.
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Condos for sale & rent at 21st at Montana
Listings shown are illustrative sample data. On the live site, currently available condos at 21st at Montana load automatically from the MLS/IDX feed with live photos, prices and availability.
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Recent sales at 21st at Montana
| Date | Residence | Beds/Baths | Sq Ft | Sale price | $/Sq Ft |
|---|---|---|---|---|---|
| May 2026 | Residence 3A | 2 bd · 2 ba | 742 | $920,000 | $1,240 |
| Nov 2025 | Residence 4B | 3 bd · 2.5 ba | 1,168 | $1,687,000 | $1,444 |
| Mar 2025 | Residence 5C | 1 bd · 1 ba | 884 | $1,150,000 | $1,301 |
| Dec 2024 | Residence 6D | 1 bd · 1 ba | 951 | $1,069,000 | $1,124 |
| May 2024 | Residence 7E | 1 bd · 1 ba | 1,998 | $2,410,000 | $1,206 |
| Dec 2023 | Residence 8A | 1 bd · 1 ba | 1,043 | $1,064,000 | $1,020 |
Recent-sales figures are illustrative sample data. On the live site, closed sales at 21st at Montana load from the MLS/IDX feed.
Amenities & services
What to know before you buy at 21st at Montana
The details that make or break a condo decision — current HOA dues and what they cover, parking, and the building's pet & leasing rules. Our advisors pull these straight from the building's HOA documents for any residence you're weighing.
Learn moreCompiled from public sources · last reviewed July 2026. We confirm current dues, reserves, lender and policy details for any residence you're considering.
In the heart of Santa Monica
21st at Montana places you at the center of Santa Monica, with the neighborhood's dining, shopping and character just outside your door and the rest of Los Angeles within easy reach.