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The historically designated Casady/Decker home was originally commissioned by Si Casady in 1961 and designed by noted architect Art Decker, and then subsequently acquired and maintained by the architect himself for over 50 years. This home is an ideal exemplar of the best aspects of Southern California Midcentury Modern architecture and is qualified under the Mills Act. Constructed by the distinguished midcentury builder, John Mortenson, the home boasts quality custom craftsmanship, well-appointed storage and thoroughly maintained details, with updated custom modern cabinetry and high-end appliances and fixtures throughout. This home is perfectly secluded, well set back at the end of a long private cul-de-sac lane, surrounded by an old olive grove and shaded by mature coastal oaks and eucalyptus trees. The gentle hillside orientation of the home captures expansive views of city lights and mountain sunsets. The intentional floor plan provides every room with natural views, an optimal flow for everyday living and the ideal separation of public and private wings. The setting provides the feeling of remote private living, yet the home is located less than five minutes from the dining of old town La Mesa and nearly every modern shopping convenience imaginable. The pictures speak for themselves!. Neighborhoods: Mt. Helix Equipment: Dryer, Satellite Dish, Shed(s), Washer Other Fees: 0 Sewer: Septic Installed Topography: GSL
Listing agent: Jeffrey Nix DRE #01808447 Jeff.Nix@Redfin.com, Listing office: Redfin Corporation
MLS data updated 10/20/2026, 4:28:21 AM PT
Source: CRMLS, MLS #: 200032190
Belmont insights
Compare recorded home prices, same-type ZIP sales and mortgage rates.
Aug 7, 2020
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
No recordNo property-price record in this range.ZIP 91941 · Oct 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.No recorded sales in this range. Select All available for older records; missing records do not mean the home never sold.
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.