142 144 6th Street, Seal Beach, California image 1
Active

142 144 6th Street

Seal Beach, CA 90740
Mark as Favorite
$3,095,000 $13,048/Mo
Get Pre-Approved Check your credit
Bed 4

Bed

Bath 4

Bath

SqFt3,607

Sqft

SqFt5,876

Sqft(Lot)

An extraordinary opportunity to own a rare double-lot duplex in one of Southern California’s most sought-after coastal communities. Opportunities like this seldom become available in the heart of coveted Old Town Seal Beach’s prestigious Gold Coast neighborhood. Whether you're looking to build your dream home, complete a 1031 exchange, live in one unit while generating rental income from the other, or capitalize on a unique investment or development opportunity, this property offers exceptional flexibility in one of California’s most beloved beach towns. Located just one block from the sand and ocean, this exceptional double lot presents endless possibilities for homeowners, investors, and developers alike. Potential opportunities include dividing the property into two separate lots and c onstructing new homes with ADUs, retaining one existing structure while developing the second lot, or preserving the charming one-bedroom beach cottage and adding an ADU above the garage (all subject to City approval). The property features two original beach cottages connected by a shared courtyard. Unit 144 is a spacious 3,047-square-foot residence (per appraisal) offering 3 bedrooms and 3.5 bathrooms. The main level features a generous family room, kitchen, dining area, living room, bedroom, a full bathroom and a half bathroom . Upstairs, you’ll find a large den, an expansive primary suite with a walk-in closet and en-suite bathroom, as well as a secondary bedroom and an additional full bathroom. A spiral staircase leads to the rooftop deck, where breathtaking 360-degree views of the coastal town, city lights, and surrounding mountains create an unforgettable setting. Unit 142 is a charming 1-bedroom, 1-bathroom beach cottage complete with a living room, kitchen, and private outdoor yard. Each residence includes its own spacious two-car garage with access from a wide alley—an uncommon and highly desirable feature in Old Town. This is a standout opportunity for owner-users, investors, and developers seeking a premier coastal property with exceptional versatility and long-term potential. Just moments from the beach, the boutique shops and restaurants of Main Street, and highly rated school district, this rare double-lot property offers the very best of Seal Beach coastal living.

Read More Expand

Detail Ic Property Details

Property Type : Residential

Price : $3,095,000

AD Id : 84978312

MLS Id : NP26126800

Beds : 4

Lot Size : 5,876 Sqft

Living Area Size : 3,607

Year Built : 1938

Garage : 4

County : Orange

Subdivision: Fallbrook

  • Map Map

Map

Map What's Nearby

Map Nearby Areas

Feature Features

  • Bedroom Information

    Total beds: 4

    Bathroom Information

    Total Baths: 5 Full Baths: 4 Half Baths: 1

    Roofing Information

    Tile

    Flooring Information

    Carpet, Wood

  • Interior Features

    Ceiling Fan(s), Central Vacuum, Track Lighting, Primary Suite
    Roof: Tile
    Appliances: Dishwasher, Microwave
    Laundry Features: Inside

  • Heating & Cooling

    Has Heating: Yes Heating: Central Has Cooling: Yes Cooling: Central Air

  • Building Information

    Year Built: 1938
    Patio And Porch Features: Patio
    Pool Features: None
    Private Pool: No
    View: City Lights, Mountain(s), Neighborhood, Panoramic, Peek-A-Boo

  • Lot Information

    Main Square Feet: 5876 Lot Size Acres: 0.1349 Lot Size Source: Assessor Lot Size Square Feet: 5,876 Lot Description: 0-1 Unit/Acre

    Property Information

    Subdivision: Old Town (OLDT) Source Property Type: Residential Property SubType: Duplex Levels: Three Or More Property Age: 88

  • Listing Price Information

    Listing Price: $3095000
    Cash, Cash to New Loan, Conventional, Cal Vet Loan, 1031 Exchange, FHA, Government Loan, VA Loan

  • Tax Information

    Parcel Number: 19903230 Tax Lot: 42 Tax Block: 6

  • Virtual Tour

    Virtual Tour (External Link)

    Parking Information

    Parking Total: 4 Garage

    Garage Information

    Has Garage: Yes Has Attached Garage: Yes Garage Space: 4

  • School Information

    Elementary School: McGaugh Junior High School: Senior High School: Los Alamitos

  • Location Information

    Direction: PCH to Marina Dr., Turn on 6th St. WaterSource: Public Security Features: Carbon Monoxide Detector(s),Smoke Detector(s)
Sell a home like this and save $185,201 Find out How

How much is this property worth?

Curious about this home's true market value? Use our free Home Evaluation Tool to instantly get a personalized Comparative Market Analysis (CMA) report. Make smarter, data-driven decisions before you buy.

Images
Loading, please wait...

Nearby Home Value

Address Estimate Bed Bath Sq. Ft Lot Size
1216 Ocean, Seal Beach, CA, 90740 $4,250,000 9 7.5 2,565 2,565 SqFt
119 2nd Street, Seal Beach, CA, 90740 $2,995,000 5 6 3,362 3,362 SqFt

Similar Multifamily To 142 144 6th Street

Nearby For Sale

Slider Thumb
Active
Mark as Favorite
$4,250,000
Multifamily For Sale

1216 Ocean,
Seal Beach, CA, 90740

Bed 9

Bed

Bath 7.5

Bath

SqFt2,565

Sqft

SqFt3,636

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$3,095,000
Multifamily For Sale

142 144 6th Street,
Seal Beach, CA, 90740

Bed 4

Bed

Bath 4

Bath

SqFt3,607

Sqft

SqFt5,876

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$2,995,000
Multifamily For Sale

119 2nd Street,
Seal Beach, CA, 90740

Bed 5

Bed

Bath 6

Bath

SqFt3,362

Sqft

SqFt4,356

Sqft(Lot)

The information being provided by Miami Association of REALTORS® is for the consumer's personal, non-commercial use. Any information relating to real estate for sale referenced on this web site comes from the Internet Data Exchange (IDX) program of the Miami Association of REALTORS®. The accuracy of all information is deemed reliable but not guaranteed and should be personally verified through personal inspection by and/or with the appropriate professionals. The data contained herein is copyrighted by Miami Association of REALTORS® and is protected by all applicable copyright laws. Any unauthorized dissemination of this information is in violation of copyright laws and is strictly prohibited. Copyright 2026 Miami Association of REALTORS®. All rights reserved.

ByOwner last updated this listing 08/17/2026 @ 08:59

MLS: NP26126800 LISTED BY: Timothy Carr, Pacific Sotheby's Int'l Realty 949-554-1200 SOURCE: CRMLS

More Cities with for Sale by Owner Homes

Homes around $3,095,000

Slider Thumb
Mark as Favorite
$1,829,000
Home For Sale

850 Coastline Drive,
Seal Beach, CA, 90740

Bed 4

Bed

Bath 3

Bath

SqFt2,643

Sqft

SqFt5,428

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$1,895,000
Home For Sale

1515 Electric Avenue,
Seal Beach, CA, 90740

Bed 3

Bed

Bath 3

Bath

SqFt3,920

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$1,899,900
Condo For Sale

805 Ocean #4,
Seal Beach, CA, 90740

Bed 3

Bed

Bath 2

Bath

SqFt1,230

Sqft

SqFt8,256

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$1,999,999
Home For Sale

417 Emerald,
Seal Beach, CA, 90740

Bed 3

Bed

Bath 2

Bath

SqFt1,630

Sqft

SqFt9,900

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$2,150,000
Home For Sale

150 13th Street,
Seal Beach, CA, 90740

Bed 3

Bed

Bath 3

Bath

SqFt2,164

Sqft

SqFt2,938

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$2,499,000
Home For Sale

1230 Crystal Cove Way,
Seal Beach, CA, 90740

Bed 5

Bed

Bath 5

Bath

SqFt2,874

Sqft

SqFt5,000

Sqft(Lot)
Slider Thumb
Mark as Favorite
$2,595,000
Home For Sale

1005 Marvista Avenue,
Seal Beach, CA, 90740

Bed 3

Bed

Bath 5

Bath

SqFt3,242

Sqft

SqFt5,300

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$2,599,000
Home For Sale

118 3rd Street,
Seal Beach, CA, 90740

Bed 4

Bed

Bath 4

Bath

SqFt2,858

Sqft

SqFt2,938

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$2,599,000
Home For Sale

312 15th,
Seal Beach, CA, 90740

Bed 3

Bed

Bath 2

Bath

SqFt1,392

Sqft

SqFt5,000

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$2,850,000
Home For Sale

640 Island View,
Seal Beach, CA, 90740

Bed 4

Bed

Bath 4

Bath

SqFt3,500

Sqft

SqFt5,400

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$2,995,000
Multifamily For Sale

119 2nd Street,
Seal Beach, CA, 90740

Bed 5

Bed

Bath 6

Bath

SqFt3,362

Sqft

SqFt4,356

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$3,049,000
Home For Sale

114 5th,
Seal Beach, CA, 90740

Bed 4

Bed

Bath 3

Bath

SqFt1,739

Sqft

SqFt5,663

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$3,125,000
Home For Sale

205 4th Street,
Seal Beach, CA, 90740

Bed 4

Bed

Bath 4

Bath

SqFt3,455

Sqft

SqFt3,525

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$3,395,000
Home For Sale

114 2nd,
Seal Beach, CA, 90740

Bed 5

Bed

Bath 6

Bath

SqFt3,208

Sqft

SqFt2,938

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$3,775,000
Home For Sale

114 4th Street,
Seal Beach, CA, 90740

SqFt3,538

Sqft

SqFt7,312

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$3,970,000
Home For Sale

320 7th Street,
Seal Beach, CA, 90740

Bed 5

Bed

Bath 4

Bath

SqFt5,227

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$4,250,000
Multifamily For Sale

1216 Ocean,
Seal Beach, CA, 90740

Bed 9

Bed

Bath 7.5

Bath

SqFt2,565

Sqft

SqFt3,636

Sqft(Lot)
Slider Thumb
Active
Mark as Favorite
$4,285,000
Home For Sale

1701 Catalina Avenue,
Seal Beach, CA, 90740

Bed 6

Bed

Bath 4

Bath

SqFt4,001

Sqft

SqFt6,500

Sqft(Lot)

Selling? Save $185,201 when you sell a home like this

Tour with a ByOwner Agent