135 Del Mar, Costa Mesa, California 92627, Costa Mesa, 92627 - 0 bed, 0 bath
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Costa Mesa, California 92627
This Value-Add Duplex Asset is listed at $1,675,000, reflecting a strategic premium for its rare development upside. While the $1,582,180 Fair Market Value indicates current market positioning, the expansive 10,454 Square Foot Lot and ADU Potential provide a clear path for forced appreciation. Currently maintaining a Condition Rating of 4, the 1951 structure generates immediate cash flow in a high-demand rental pocket near Mariners Elementary. This property is a high-utility acquisition for Buy-and-Hold Investors or Developers looking to maximize density in Eastside Costa Mesa.
Property is moderate renovation needed.
Built in 1951, this duplex is functional and currently occupied but shows significant signs of age. The kitchen and bathrooms feature outdated tile countertops, older cabinetry, and vintage fixtures that have not been modernized in several decades. While the property is maintained through regular upkeep, the systems (such as wall heaters) and interior finishes require updates to meet current market standards.
The expansive 10,454 square foot lot is exceptionally large for Eastside Costa Mesa, offering rare opportunities for ADU additions or full site redevelopment to maximize density.
The property is a fully occupied duplex, providing stable, in-place rental income from day one while the owner explores long-term value-add strategies.
Situated in a highly desirable neighborhood near world-class beaches, high-end shopping, and top-rated schools like Mariners Elementary, ensuring strong long-term appreciation.
Lot size discrepancy between mls listing and other public or private record. mls listing lot size in square feet =10454, other record lot size in square feet = 10347.
Built in 1951, the existing structures may require substantial capital investment for modernization, repairs, or system upgrades to maintain competitiveness.
With only 1,326 total square feet split between two units, the current living spaces are relatively small, which may limit the ability to achieve premium market rents without expansion.
Exceptional investment opportunity in Eastside Costa Mesa. 135 Del Mar is a fully occupied duplex situated on an expansive and well-shaped 10,454 square foot lot, offering immediate income with significant upside potential. Whether you’re an investor looking to strengthen your portfolio or a developer seeking your next project, this property delivers flexibility, scale, and long-term value. The existing duplex provides stable, in-place rental income while you explore a range of possibilities. The oversized lot configuration presents excellent ADU potential, allowing you to increase cash flow and maximize returns. With generous dimensions and favorable layout, the site may also offer compelling development opportunities (buyer to verify with the city), making it ideal for those looking to build additional units or reimagine the property entirely. Located in a highly desirable area close to beaches, shopping, dining, and major freeways, this property benefits from strong rental demand and long-term appreciation fundamentals. Large parcels like this are increasingly rare—especially with an income-producing structure already in place. Collect rent today. Add value tomorrow. Unlock the full potential of this prime Eastside Costa Mesa property.
No exterior & parking available.
Grades 3-6 • 1.2 mi
Grades PK-2 • 1.5 mi
Grades PK-6 • 2.2 mi
No sensitive facilities data found.
| Feature | Subject | Average Home | Neighborhood Ranking (50 Listings) |
|---|---|---|---|
| Beds | 0.0 | 0.0 | 50% |
| Baths | 0.0 | 0.0 | 50% |
| Square foot | 1,326 | 1,971 | 6% |
| Lot Size | 10,454 | 7,577 | 89% |
| Price | $1.65M | $1.84M | 33% |
| Price per sq ft | $1.2K | $965 | 89% |
| Built year | 1951 | 1959 | 28% |
| HOA | $0 | $0 | 50% |
| Days on market | 58 | 189 | 17% |
Apr 18, 2026
$1,650,000
$1,675,000
-1% Price Drop
Initial Listing
Mar 18, 2026
$1,675,000
$1,700,000
-1% Price Drop
Initial Listing
Feb 23, 2026
$1,700,000
Initial Listing
Dec 29, 2010
$510,000
Public Record
Aug 29, 2006
$645,000
Public Record