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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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21103 Gary 318A — Castro Valley — 2 Beds • 2 Baths • 1,100 Sq Ft | Belmont Brokerage | Belmont Brokerage

Active

OPEN APR 18 · 1PM – 4PM

+36 more

$475,000

0 DOM

$432/sqft2 bd2 ba1,100 sqftHOA ~703/mo

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21103 Gary 318A Castro Valley, CA 94546

Welcome to this inviting upper-unit condo in the desirable Mesa Verde gated community. Featuring 2 bedrooms, 2 bathrooms, and approximately 1,100 sq ft of living space, this home offers a comfortable layout with great natural light throughout. The living room is warm and welcoming, complete with a cozy fireplace and access to a private balcony—perfect for relaxing or enjoying a quiet moment outdoors. The adjacent dining area connects easily to the kitchen, making everyday living and entertaining simple and practical. Both bedrooms are well-sized, offering flexibility for living, guests, or a home office setup. The home also includes a dedicated 1 garage space/storage and 1 uncovered parking space and guest parking for added convenience. Enjoy resort style amenities including multiple swimming pools, tennis courts, clubhouse with game room, and fitness area. Ideally located just blocks from BART, Lake Chabot Regional Park, Castro Valley Downtown shopping, dining, and with easy freeway access for commuting. A great opportunity for homeowners or investors—schedule your private tour today.

MLS 41128990

925-257-0305 (Office) 415-828-2961 (Cell) tracytanghomes@gmail.com

Est. payment

$3,739/mo

Principal & interestTaxesInsuranceHOA

$2,402$495$139$703

Down %

Rate %

Years

Down payment: $95,000 · Total cost: $959,669

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$3,739/mo

Principal & interest: $2,402
Est. property tax: $495
Est. insurance: $139
HOA (normalized / mo): $703
Down payment: $95,000

Est. gross rent$1,979/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)$-1,760/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.

Virtual Tour

Explore 3D Space

Opens interactive virtual tour

Price History

Event	Date	Price	Change
Listed	Apr 15, 2026	$475,000	—

Facts & Features

Transaction Data

HOA Fee$703/monthly

Structure & Property

Year Built1993

Garage Spaces2

925-257-0305 (Office) 415-828-2961 (Cell) tracytanghomes@gmail.com

Sale & Tax History

No Recent Sales History

We didn't find any closed transactions for this property in the last 5 years.

Location

21103 Gary 318A, Castro Valley, CA 94546

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21103 Gary 318A Castro Valley, CA 94546

About this home

Tracy Tang

Est. monthly payment

Mortgage vs rent

Virtual Tour

Price History

Facts & Features

Transaction Data

Structure & Property

Tracy Tang

Sale & Tax History

No Recent Sales History

Location

Location

Open Houses

Listing Agent

Presented by Belmont Brokerage Inc.

21103 Gary 318A, Castro Valley, CA 94546

About This Property

Property Photos

21103 Gary 318A Castro Valley, CA 94546

About this home

Tracy Tang

Est. monthly payment

Mortgage vs rent

Virtual Tour

Price History

Facts & Features

Transaction Data

Structure & Property

Tracy Tang

Sale & Tax History

No Recent Sales History

Location

Location

Open Houses

Listing Agent

Presented by Belmont Brokerage Inc.