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Nestled in the scenic community of Castaic just minutes from Castaic Lake State Recreation Area, 31615-31609 Hunter Ln presents a rare opportunity to own a turnkey legal duplex on an expansive approximately 15,825 sq ft lot offering lifestyle, income potential, privacy, and future upside. This unique property combines flexibility and long-term wealth-building potential with the space and functionality today’s buyers are searching for. Both residences have been thoughtfully upgraded and offer true pride of ownership from the moment you arrive. The oversized drive-through access provides ample room for RVs, boats, trailers, off-road vehicles, work trucks, and recreational equipment—an increasingly rare feature in Southern California. Ideal for contractors, entrepreneurs, investors, multigenerational families, or outdoor enthusiasts, this property adapts to a variety of lifestyles and investment strategies. The main residence features a spacious and move-in-ready 4-bedroom, 2-bathroom layout designed for comfortable everyday living and entertaining. The attached 2-car garage may offer future ADU conversion potential (buyer to verify), creating additional opportunities for passive income, guest quarters, or extended family living. The second residence was built from the ground up and provides an excellent opportunity to offset mortgage expenses, generate rental income, or establish a strong long-term investment in one of Los Angeles County’s growing communities. Enjoy close proximity to boating, fishing, hiking, camping, and waterfront sunsets at Castaic Lake while maintaining convenient access to freeways, shopping, dining, schools, and major employment corridors. The oversized lot offers additional possibilities for future lot optimization, ADU additions, workshop space, outdoor entertaining areas, or other improvements subject to Los Angeles County approval. Perfectly suited for owner-users, 1031 exchange buyers, DSCR investors, developers, and savvy real estate buyers seeking an income-producing property with expansion potential, this is a rare opportunity to acquire a legal duplex that combines turnkey condition, usable land, income generation, and future upside in today’s competitive market.
Listing agent: David Prieto DRE #01881417 david@syncbrokerage.com, Listing office: Sync Brokerage, Inc.
MLS data updated 11/2/2026, 11:37:54 PM PT
Source: CRMLS, MLS #: SR26106131
Belmont insights
Compare recorded home prices, same-type ZIP sales and mortgage rates.
Aug 7, 2026
Prices use the left axis; mortgage rates use the right. Hover, tap, or focus the chart and use the arrow keys. Red SOLD badges mark recorded sales.
This home · nearest recorded event
$1,080,000Closed sale · Aug 7, 2026ZIP 91384 · Aug 2026
No monthly averageAt least 3 eligible sales in this month are required.30-year fixed mortgage benchmark
No weekly rateNo published rate within 7 days of this date.ZIP averages use publicly displayable closed sales from our licensed MLS feed, matched to the same ZIP and exact property type. Months with fewer than 3 sales are omitted; the current month is incomplete. Lines connect available monthly observations across gaps and do not represent measured prices in missing months. These averages are not adjusted for size, condition, or location within the ZIP, and are not an appraisal. Feed coverage may not include every sale. All available shows the available home and ZIP history, with mortgage rates over the same dates.
Mortgage benchmark: Freddie Mac Primary Mortgage Market Survey®. © Freddie Mac. Weekly national 30-year fixed rates, not APRs or a loan quote. Actual terms vary. Methodology changed in November 2022. The chart does not establish that interest-rate changes caused a home’s price changes.
Lines connect recorded asking and sale prices. They are visual guides, not estimates of the home’s value between those dates.
No earlier records were returned by our current sources. This does not mean the home has never sold.
MLS records may be incomplete. Earlier asking prices are not sale prices.