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FIXER: Mount Helix Cottage with Endless Potential! Welcome to 10773 Challenge Blvd, a hidden gem nestled in a desirable, peaceful neighborhood of Mt Helix in La Mesa. Built in 1941, this classic California single-family home perfectly blends vintage character with an incredible opportunity to customize, expand, or build your dream outdoor oasis Existing Footprint: 2-bedroom, 1-bathroom layout across 873 square feet of interior living space. Massive 0.28-Acre Lot: An expansive, flat lot offering a rare amount of outdoor space in San Diego County—perfect for an ADU (Accessory Dwelling Unit), premium landscaping, pool, or urban garden.
Listing agent: Brian Lewis DRE #01440201 teamlewissd@gmail.com, Listing office: Compass
MLS data updated 10/24/2026, 2:41:33 AM PT
Source: CRMLS, MLS #: 260015030SD
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
$650,000Closed sale · Aug 7, 2026ZIP 91941 · 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.