1621 S Diamond, Santa Ana, California 92704, Santa Ana, 92704 - 7 bed, 4 bath
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1621 S Diamond
Santa Ana, California 92704
ACTIVE
CONDITION: EXCELLENT
7Beds
4Baths
2,493Sq Ft
6,000Lot Size
Property Price
LIST PRICE$1,045,000
EST. MARKET VALUE
$1,210,453
13% BelowMARKET VALUE
SUMMARY
This property presents a High-Potential Investment Opportunity with a List Price of $1,045,000—positioned well below the $1,210,454 Fair Market Value by 13%. This valuation gap offers $165,454 in Instant Equity. Featuring a 2026 Detached ADU and a Permitted Den Addition, the property maintains a Condition Rating of 2. With dual-income streams totaling $6,050 monthly, this asset is perfectly suited for Buy-and-Hold Investors or Owner-Occupants seeking to offset mortgage costs through rental income.
Estimated Market Value
$1,210,453+$165,453 Equity Potential
Based on Realkey algorithm analyzing recent comparable sales in Santa Ana.
Condition Analysis
See Full ReportOVERALL CONDITION SCORE
Excellent
TeardownExcellent
Property is new construction or fully renovated.
The property features a brand-new detached ADU built in 2026 with paid-off solar and a front house with a recently permitted den addition, indicating modern systems and mint condition.
PROSSTRENGTHS & OPPORTUNITIES
- Dual-Income Potential
The property features two separate rental units generating a combined $6,050 per month, offering an immediate and robust cash flow for investors.
- Modern ADU with Solar
The detached 2-bedroom ADU was recently completed in 2026 and includes paid-off solar panels, ensuring low maintenance and high energy efficiency.
- Versatile Living Configuration
With a total of 7 bedrooms and 4 bathrooms across both structures, the property is perfectly suited for multi-generational living or maximizing rental yields.
CONSRISKS & DEFICIENCIES
- Tenant Management
Both units are currently occupied on month-to-month leases, which may require coordination for owner-occupancy or potential lease restructuring.
- High Density on Lot
Accommodating two large dwellings on a 6,000 sqft lot may result in limited private outdoor space and potential parking constraints for the high number of occupants.
About 1621 S Diamond
2 RARE HOUSES ON A SINGLE CORNER LOT OFFER HIGHER PROPERTY VALUES AS MORE SPACE & PRIVACY FROM NEIGHBORS !!! * The front house at 1621 S. Diamond St has 5 bedrooms / 2 bathrooms with 1,588 Sqft of living space and just added on a Den Permitted 105 Sqft as Total 1,693 Sqft of living space and renting $3450/ Month as Month to Month Lease * The Back house as Detached ADU was just built in 2026 at 1621 1/2 S. Diamond St has 2 bedrooms / 2 bathrooms with 800 Sqft of living space, Paid off Solar and renting $2600/Month as Month to Month Lease. Great investment and will not last long !
Property Details
Public Facts
- Property Type
- Single Family Residence
- Year Built
- 2026
- Lot Size
- 6,000 Sq. Ft.
Interior
- Total Bedrooms
- 7
- Total Bathrooms
- 4 (4 Full, 0 Half)
Exterior & Parking
No exterior & parking available.
Utilities & Misc
- HOA Fee
- $0 / Month
Neighborhood Insights
Sensitive Facilities
No sensitive facilities data found.
Neighborhood Comparison
| Feature | Subject | Average Home |
|---|---|---|
| Beds | 7.0 | 3.0 |
| Baths | 4.0 | 2.0 |
| Square foot | 2,493 | 1,531.136 |
| Lot Size | 6,000 | 6,702.356 |
| Price | $1.04M | $1.07M |
| Price per sq ft | $419 | $690 |
| Built year | 2026 | 1958 |
| HOA | $0 | $236 |
| Days on market | 47 | 51 |
Pricing History
Listed for Sale
Aug 24, 2026
$1,045,000
$999,999
+5% Price Increase
Initial Listing
Price Change
Jul 24, 2026
$999,999
Initial Listing
Sold
Oct 7, 2016
$450,000
Public Record
Sold
Nov 29, 2005
$460,000
Public Record