142 6th Street, Seal Beach, CA 90740

• 4 beds |
• 5 baths |
• 3,607 sqft

Property Description

An extraordinary opportunity to own a rare double-lot duplex in one of Southern Californias most sought-after coastal communities. Opportunities like this seldom become available in the heart of coveted Old Town Seal Beachs 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 Californias 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 constructing 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, youll 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

Listing Status:

Active

Date Added:

June 16, 2026

Data Last Updated:

August 24, 2026 at 5:12AM

Listing Office:

Pacific Sotheby's Int'l Realty : 949-554-1200

Listing Agent:

Timothy Carr : 949-631-9999

MLS ID:

NP26126800

Interior

• General: Track LightingVacuum Central
• Appliances: DishwasherMicrowave
• Flooring: CarpetWood
• A/C: Central Forced Air
• Heating: Forced Air Unit
• Fireplace: FP in Living Room

Exterior

• Style: CottageMediterranean/Spanish
• Pool: N/K
• Parking: GarageParking spaces: 4

Construction

• Roofing: Tile/Clay
• General: 2

Location

• HOA Amenities: 0.0
• Originating MLS: California Regional MLS
• County: Orange

Lot

• Zoning: 19903230
• View: City LightsMountains/HillsNeighborhoodPanoramicPeek-A-Boo

Utilities

• Water: Public
• Sewer: Public Sewer

Financial

• Source: California Regional MLS