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680 42nd St is the kind of property that rarely comes along—beautifully updated 2423 sqft duplex that lives effortlessly like a single-family home w/ a true in-law/adu. With 3BD/2BA upstairs, plus 2BD/1BA down, the layout has the perfect balance of togetherness & separation, idealfor multi-generational living, long-term guests, work-from-home flexibility,or income potential. Behind its clean, timeless exterior, the upper residence feels bright, calm, & thoughtfully curated. Sunlight fills spacious living/dining areas where warm wood floors & crisp white walls create a gallery-like backdrop for everyday life. The kitchen is polished with classic white cabinetry, stainless appliances including a chef-grade gas range, designer fixtures, generous counter space,& a breakfast nook. Upper bedrms—includes stylish primary suite—offers comfort & privacy, complemented by updated bathrooms. Downstairs 2BD/1BA is perfect as guest quarters, creative studio, office haven,or full 2nd unit. Attached garage offers interior access to the upper unit, tons of storage/utility space, laundry rm,& bonus space for workshop or office. Sunny spacious backyard completes the home w/ room to dine, play, & unwind. Plus, incredible avocado tree! Located in North Oak/Longfellow, just moments to Temescal/BART/580
Listing agent: Michael Braillard DRE #01369899 m.braillard@corcoranicon.com, Listing office: Corcoran Icon Properties
MLS data updated 10/25/2026, 10:58:41 PM PT
Source: CRMLS, MLS #: 41121634
Belmont insights
Compare recorded home prices, same-type ZIP sales and mortgage rates.
Feb 17, 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
$1,365,000Closed sale · Feb 17, 2026ZIP 94609 · Feb 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.