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To list your property with Belmont Brokerage, contact us at (818) 967-6311 or email brokerage@bbandm.com. Our team will provide a complimentary AI-powered Comparative Market Analysis (CMA), professional staging recommendations, and a customized marketing strategy. We list on the MLS and through our exclusive off-market network for maximum exposure.

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Yes. Belmont Brokerage handles commercial real estate transactions including office spaces, retail locations, multi-family investments, and mixed-use developments throughout Los Angeles County. Our commercial division provides investment analysis, lease negotiations, and 1031 exchange guidance.

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Belmont Brokerage combines California MLS data with internal valuation and offer-strategy workflows, plus compliance-aware document tooling. Agents get data-driven pricing context grounded in active listings and recent market activity.

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Yes. Belmont Brokerage Inc. operates under California Department of Real Estate (DRE) license #02431308. Listings shown from the MLS follow participating board rules, including attribution and IDX display requirements.

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503 Longden Avenue — San Gabriel — 5 Beds • 4 Baths • 3,005 Sq Ft | Belmont Brokerage | Belmont Brokerage

Active

+50 more

$1,890,000

53 DOM

$629/sqft5 bd4 ba3,005 sqft

Call

503 Longden Ave San Gabriel, CA 91775

10,467sqft lot

Beautiful Country Club neighborhood home with gated office quarter & separate studio! Bright and spacious North San Gabriel home bordering San Marino with brand new roof, featuring 5 bedrooms & 3 bathrooms with approx. 3,005 SF of living space plus a stunning vaulted-ceiling studio that can be converted into an ADU, on an approx 10,400 SF large lot. The inviting living room with a cozy fireplace and breakfast nook overlooks the golf course while the updated kitchen connects to the laundry area and side door. The family room also has a fireplace and is perfect for daily gatherings & relaxation. Flowing into a spacious dining area and great room with wet bar, opening to a covered patio with outdoor TV and BBQ area—ideal for social entertaining. Downstairs offer 3 bedrooms, including 1 that can be served as a private home office. It features lovely double doors, an adjacent sitting patio, and its own private side-gated entrance from the front—excellent for a business office setup—along with 2 bathrooms. Upstairs features 2 bedrooms including the primary en-suite with double sinks, soaking tub, walk-in closet. Added features include a detached 2-car garage, paved stone extra-wide driveway, electric gated access, and recent upgrades such as a newly installed multi-layer shake composition roof, Carrier HVAC dual-zone control A/C and furnace system, newer water heater, refinished hardwood floor & cabinets, new pavers and landscaping. Conveniently situated close to schools, Santa Anita shopping centers, markets and restaurant. Huntington Library, Lacy Park etc. This location offers easy access to San Marino, South Pasadena, Alhambra, Arcadia, the 10 Freeway,

MLS AR26034055

626-229-2200 (Office) achh88@gmail.com

Est. payment

$12,077/mo

Principal & interestTaxesInsurance

$9,557$1,969$551

Down %

Rate %

Years

Down payment: $378,000 · Total cost: $3,818,473

Mortgage vs rent

Compare estimated owner carrying cost (same loan math as above) to a gross rent estimate from a price-based multiplier (not a comp lease).

Est. carrying cost$12,077/mo

Principal & interest: $9,557
Est. property tax: $1,969
Est. insurance: $551
Down payment: $378,000

Est. gross rent$7,875/mo

Gross rent ≈ list price ÷ (20 × 12). Adjust the multiplier to match how you underwrite (typical investor GRM bands are often ~16–24 for SFR, market-dependent).

Rent − carrying cost (illustrative)$-4,202/mo

Down payment20%

6.5% APR, 30-year amortization — same P&I formula as the payment calculator above.

Gross rent multiple (annual)20×

Not financial advice. Mortgage uses standard amortizing P&I; taxes and insurance are rough California-style estimates (1.25% / yr tax, 0.35% / yr insurance). Rent is gross (no vacancy or management); actual market rent requires comps or a lease listing.