$3,500,000
5Beds4Baths2,830SqFt
394 Magnolia StreetCosta Mesa, CA 92627Eastside South
1578 San Bernardino, Costa Mesa, CA 92627
- 6 beds
- 6 baths
- 4,000 sq ft
- Built 2004
$3,399,999
Subdivision Eastside South
Open house
Open House
The home
About 1578 San Bernardino
$100K Price Adjustment. Motivated Seller! Welcome to this Magnificently rebuilt legal duplex on a large pie-shaped Cul-de-Sac lot in Stylish Contemporary Italian Architecture and Design built in 2004 and updated and expanded in 2026 this Frank Gehry inspired look is both flexible and versatile with high volume /open areas where the traditional
boundary between indoor and outdoor is at the same time breached and joined. Remodeled/Reimagined/Resurgent maximizing space while incorporating modern conveniences seeking to integrate the surrounding suburban landscape into an Abode which will have you either considering continuous entertaining or a life of a Hermit. In addition, while the Main Unit features 4 bedrooms +Office with 3.5Baths and the attached ADU featuring 2Bd 2Ba 2story 1000 sq. ft. that can easily rent for $3500 or act as a Mother -in-Law apartment the specialness will become apparent at your first visit. The Bedrooms each have individual AC units so that the climate control can be "Individualized" for each inhabitant w/o compromising comfort. A private lap pool and Spa +Outdoor Shower will make your "luxury" moments enjoyable and addictive. The attached 3 Car Garage adds a measure of convenience that will instantly be appreciated. Minutes away from both the Beach{sea breezes} and the Freeway this conveniently situated Home "checks all the boxes" and will inspire
you for a long time,.
Property details for 1578 San Bernardino
This 6-bedroom, 6-bath duplex sits in the Eastside South neighborhood of Costa Mesa in Orange County. It offers 4,000 square feet of living space and is listed at $3,399,999, about $850 per square foot. The home was built in 2004. The MLS record lists the assessor parcel number as 425-321-32. Highlights include ocean views, a private pool and spa, a fireplace, an attached three-car garage, central air, and an updated home. The detail sections on this page cover interior and exterior features, estimated taxes, HOA dues where they apply, and the map location.
Specifications
Home Details
At a glance
- Price
- $3,399,999
- Days On Site
- 70 Days
- Bedrooms
- 6
- Inside Area (SqFt)
- 4,000 sqft
- Total Baths
- 6
- Full Baths
- 5
- Partial Baths
- 1
- Lot Size
- N/A
- Year Built
- 2004
- MLS® Number
- OC26162895
- Status
- Active
- Property Tax
- N/A
- HOA/Condo/Coop Fees
- N/A
- Sq Ft Source
- N/A
General Features
- Property Type
- Duplex
- MLS Number
- OC26162895
- Year Built
- 2004
- Living Area (sq ft)
- 4,000
- Lot Size (sq ft)
- 7,841
- Lot Size (acres)
- 0.18
- Levels
- Two
- Bedrooms
- 6
- Full Baths
- 5
- Half Baths
- 1
- Garage Spaces
- 3
- Parking Spaces
- 3
- View
- Ocean
- Private Pool
- Yes
- Parcel Number
- 42532132
- On Market Date
- 2026-07-26
- Listing Terms
- Standard
Interior Features
- Interior Features
- Granite Counters, High Ceilings, Multiple Staircases, Two Story Ceilings, All Bedrooms Up, Dressing Area, Walk In Closets
- Appliances
- Dishwasher, Gas Oven, Gas Range, Microwave
- Flooring
- Tile
- Heating
- Central, Ductless, Forced Air
- Cooling
- Central Air, Ductless
- Fireplace
- Primary Bedroom
- Laundry
- Electric Dryer Hookup, Gas Dryer Hookup, Laundry Room
- Main Level Bathrooms
- 1
- Entry Level
- 1
- Common Walls
- No Common Walls
- Accessibility
- Parking
- Rooms
- Other, Bathroom, Kitchen, Primary Bedroom, Bedroom, Living Room, Family Room, Primary Bathroom
Exterior Features
- Architectural Style
- Contemporary
- Lot Features
- Zero To One Unit Acre
- Patio and Porch
- Deck
- Parking
- Door Multi, Direct Access, Driveway, Garage, On Site, Paved
- Fencing
- Average Condition, Wood
- Pool Features
- Gas Heat, Heated, Private
- Spa
- Heated, In Ground, Private
- Sewer
- Public Sewer
- Water
- Public
- Condition
- Additions Alterations, Updated Remodeled
- Faces
- North
- Units
- 2
Community Features
- Subdivision
- Eastside South (ESCM)
- Community Features
- Curbs, Suburban
The record
Property History for 1578 San Bernardino
| Date | Event | Price | Note |
|---|---|---|---|
| Jul 26, 2026 | Listed for sale | $3,500,000 |
No prior MLS sales on record for this home since 2012.
Cost of ownership
Estimated monthly payment
7.03% · 30-yr fixed$
$26,087/mo
10% down · 30-year fixed · $340,000 down
Principal & interest$20,420
Mortgage insurance (est., over 80% LTV)$1,275
Property tax (est. 1.2%)$3,400
Home insurance (rough est., varies widely)$992
HOANot reported, not included
$22,543/mo
20% down · 30-year fixed · $680,000 down
Principal & interest$18,151
Property tax (est. 1.2%)$3,400
Home insurance (rough est., varies widely)$992
HOANot reported, not included
$20,274/mo
30% down · 30-year fixed · $1,020,000 down
Principal & interest$15,882
Property tax (est. 1.2%)$3,400
Home insurance (rough est., varies widely)$992
HOANot reported, not included
Estimated carrying cost
$4,392/mo
All cash · taxes and insurance only
Principal & interestNone (cash purchase)
Property tax (est. 1.2%)$3,400
Home insurance (rough est., varies widely)$992
HOANot reported, not included
Estimate only, not a loan offer or quote. Principal and interest use the Freddie Mac 30-year fixed average of 7.03% (week of Sep 24, 2026); your rate will differ. A loan this size is typically a jumbo loan, which prices differently. Tax and insurance are modelled, not billed amounts; tax uses a typical Costa Mesa rate, excluding Mello-Roos. Verify all figures. Full assumptions and disclosures.
Next steps
Buying 1578 San Bernardino
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Selling near 1578 San Bernardino
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The neighborhood
About Costa Mesa
Costa Mesa sits on the coastal tableland of central Orange County, bordered by Santa Ana, Huntington Beach, and Newport Beach, with its southern edge about a mile from the Pacific. South Coast Plaza, the Segerstrom Center for the Arts, the Orange County Fairgrounds, Orange Coast College, and the Eastside and Mesa Verde neighborhoods all fall within the Newport-Mesa Unified School District.
Costa Mesa home sales, past 12 months
- Homes sold
- 6
- Median price
- $1,885,000
- Median days on market
- 24
- Median per sq ft
- $901
Recorded MLS closings of duplexes, Sep 27, 2025 to Sep 27, 2026. Days on market run from listing to going under contract.
Price per square foot against recent Costa Mesa sales
At $850 per square foot, this home's asking price is 6% below the Costa Mesa median of $901 for duplexes that closed in the past 12 months.
Recent Costa Mesa sales
| Address | Closed | Price | Sq ft | Per sq ft | Days on market |
|---|---|---|---|---|---|
| 635 Plumer | Aug 21, 2026 | $1,550,000 | 2,562 | $605 | 87 |
| 782 W 18th Street | Jul 30, 2026 | $1,600,000 | 1,940 | $825 | 24 |
| 270 Albert Place | Mar 5, 2026 | $3,350,000 | 3,000 | $1,117 | 144 |
| 433 431 E 19th | Feb 20, 2026 | $2,450,000 | 1,520 | $1,612 | 0 |
| 2195 American Avenue | Dec 4, 2025 | $1,670,000 | 2,191 | $762 | 0 |
Schools
Schools for 1578 San Bernardino
As listed in the MLS record. Confirm attendance boundaries with the school district.
- Elementary
- Newport Heights
- Middle
- Horace Ensign
- High
- Newport Harbor
- District
- Newport Mesa Unified
Living in Costa Mesa covers its schools, parks and beaches.
Location
Location
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Listed by Robin Fenchel of Robin Fenchel, Broker
Listing information updated Sep 28, 2026 at 2:12 PM PT. Source: CRMLS.
This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. The display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, the Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent.