1621 S Diamond, Santa Ana, California 92704, Santa Ana, 92704 - 7 bed, 4 bath
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Santa Ana, California 92704
This Dual-Living Residential Asset represents a Strong Value Opportunity, listed at $1,135,000—positioned well below the $1,246,646 Fair Market Value by 8%. This valuation gap provides $111,646 in Instant Equity. Featuring a 2026 Detached ADU and a fully renovated main house with a Condition Rating of 2, the property offers immediate rental income potential. With 7 bedrooms and 4 bathrooms, this high-density layout is ideal for Buy-and-Hold Investors or Owner-Occupants seeking multi-generational living solutions in the Santa Ana Unified district.
Comparables within 1 miles sold in recently
| Address | Sold Price | Beds | Baths | Sq Ft | $/Sqft | Distance |
|---|---|---|---|---|---|---|
★ 1621 S Diamond Subject | $1,135,000* List Price | 7 | 4 | 2,493 | $500 | - |
A 2624 S Griset Sold | $1,390,000 | 5 | 4 | 2,714 | $512 | 0.9 mi |
* Subject property listed price vs sold prices of comps.
Property is new construction or fully renovated.
The property features a brand new 2026 detached ADU and a fully renovated main house. The interior shows a modern kitchen with white shaker cabinets, quartz countertops, recessed lighting, and new flooring, all appearing to be less than 5 years old. The visible electrical panel and updated finishes indicate a high-quality, recent renovation.
The property features a brand-new, detached 800 sqft ADU built in 2026, providing an excellent opportunity for rental income or multi-generational living.
With a total of 7 bedrooms and 4 bathrooms, this property offers rare capacity for large families or high-density investment strategies in the Santa Ana market.
The main residence has been expanded with a permitted den, maximizing the functional square footage to nearly 1,700 sqft for the front house alone.
With two substantial structures occupying a 6,000 sqft lot, there is very little remaining outdoor space for yard use, gardening, or private recreation.
The primary residence was built in 1952, which may necessitate more frequent maintenance or system upgrades compared to the modern 2026 ADU.
* The front house at 1621 S. Diamond St has 5 bedrooms / 2 bathrooms with 1,588 Sqft of living space and just added on Permitted a Den 105 Sqft as Total 1,693 Sqft of living space. * The Back house as Detached ADU just built in 2026 at 1621 1/2 S. Diamond St has 2 bedrooms / 2 bathrooms with 800 Sqft of living space.
No exterior & parking available.
No sensitive facilities data found.
| Feature | Subject | Average Home | Neighborhood Ranking (50 Listings) |
|---|---|---|---|
| Beds | 7.0 | 4.0 | 98% |
| Baths | 4.0 | 2.0 | 89% |
| Square foot | 2,493 | 1,459.5 | 91% |
| Lot Size | 6,000 | 6,100 | 27% |
| Price | $1.14M | $1.00M | 70% |
| Price per sq ft | $455 | $673 | 2% |
| Built year | 1952 | 1963 | 8% |
| HOA | $0 | $0 | 50% |
| Days on market | 0 | 141 | 8% |
May 8, 2026
$1,135,000
Initial Listing
Oct 7, 2016
$450,000
Public Record
Nov 29, 2005
$460,000
Public Record