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Judy Ka Yee Sin

Judy Ka Yee Sin
Real Estate Agent (Salesperson)
Lafayette CA

Salesperson (CA: 02114562)

6 years experience

REALTOR® 1 Active Listings Serves Contra Costa County, CA
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Contact Information

Brokerage
Compass
Office Address
3595 Mt Diablo Blvd
Lafayette, CA  94549
(Contra Costa County)
Office Phone
925-270-4269
Office Fax
925-977-9171
Mobile
646-262-7952
Email
judy*****@*****.com
Show Email for $5

Service Areas

Moraga: CA Lafayette: CA Reliez Valley: CA Orinda: CA Canyon: CA Castle Hill: CA Diablo: CA Alamo: CA Concord: CA Walnut Creek: CA Saranap: CA San Miguel: CA Contra Costa Centre: CA Acalanes Ridge: CA Shell Ridge: CA North Gate: CA Blackhawk: CA Danville: CA Camino Tassajara: CA Pleasant Hill: CA

About Judy Ka Yee Sin

With over a decade of experience in the real estate sector, Judy Sin has established herself as a knowledgeable and dedicated professional. Her commitment to client satisfaction is unwavering, ensuring she is available to her clients around the clock. Now based in the San Francisco Bay Area, Judy has immersed herself in various local communities, particularly in Lamorinda, where she has cultivated strong relationships. Fluent in Cantonese, Mandarin, and English, she consistently prioritizes her clients' best interests.

As a full-time realtor, Judy excels at simplifying complex data and analyses, making them accessible for her clients. She emphasizes the importance of informed decision-making in the home buying and selling process. "There is nothing more important than my clients being able to make an informed decision," she asserts. Judy also leverages social media to share insights about lifestyle and education, providing a glimpse into life in Lamorinda. Her dedication to excellence has resulted in impressive sales, totaling $30 million in properties within a relatively short timeframe.

Beyond her real estate endeavors, Judy actively contributes to her community. She is the founder of Lamorinda Mama, an online resource that highlights family-friendly activities in Lamorinda and surrounding areas. Judy holds a Master’s degree in International Public Service from DePaul University in Chicago and a Bachelor’s degree in Government and International Studies from Hong Kong Baptist University.

Contra Costa County, CA Real Estate Market Analysis (Single Family Homes)

$1,188,152
Avg. Listing Price
From Judy Ka Yee's portfolio
3.7 / 2.7
Avg. Beds/Baths
Typical property size
2,203 sf
Avg. Square Footage
Interior living space
3220
Active Listings
Current inventory

Contra Costa County's real estate market represents one of the Bay Area's most dynamic and complex landscapes, where suburban family neighborhoods meet industrial corridors and waterfront communities. With 11,034 total actively licensed agents operating throughout the county, this market demonstrates remarkable depth and specialization across diverse price points and property types. The sheer concentration of real estate professionals reflects the county's position as both a residential haven for Bay Area commuters and a standalone economic powerhouse.

What makes Contra Costa County particularly fascinating is its role as a bridge between San Francisco's premium market and the Central Valley's affordability. The county's 11,034 agents with email contact information represent a digitally connected professional network that spans from luxury waterfront properties in Danville to industrial developments in Pittsburg, creating opportunities for sophisticated marketing campaigns and targeted outreach across multiple market segments.

Major Contra Costa County, California Real Estate Markets

The county's real estate activity centers around several distinct metropolitan clusters, each with unique characteristics and agent specializations. Walnut Creek and Concord anchor the central corridor, where agents focus heavily on family housing and commercial development, while Lafayette, Orinda, and Moraga form the prestigious Lamorinda region known for top-rated schools and million-dollar properties. Meanwhile, Antioch and Pittsburg represent the county's most affordable markets, attracting first-time buyers and investors seeking value plays.

Eastern communities like Brentwood and Oakley have emerged as surprising growth engines, where newer construction meets agricultural preservation, creating unique opportunities for agents specializing in suburban expansion markets. The western waterfront areas, including Richmond and Hercules, blend industrial redevelopment with residential gentrification, requiring agents with expertise in both commercial transitions and community revitalization projects.

Market Dynamics and Geographic Complexity

Contra Costa County's market operates on multiple pricing tiers simultaneously, with median home prices varying by over $800,000 between different cities within the same county. This creates distinct agent ecosystems where professionals in Alamo and Danville rarely compete directly with those serving Bay Point or San Pablo, despite operating under the same regional market conditions. The county's BART accessibility significantly influences pricing patterns, with stations in Walnut Creek, Concord, and Pleasant Hill commanding premium valuations.

Agent specialization has become increasingly sophisticated, with many focusing on specific property types rather than geographic territories. Some concentrate on the county's substantial 55+ active adult communities, while others specialize in the region's significant inventory of townhomes and condominiums that serve as entry points for Bay Area professionals. The industrial and logistics sectors, particularly around Highway 4 corridors, support a robust commercial agent network serving warehouse and distribution facility demands.

Why Businesses Need Contra Costa County, California Agent Contact Data

Financial services companies find Contra Costa County's agent database particularly valuable because the market's price diversity creates opportunities across multiple lending products, from FHA loans in eastern communities to jumbo mortgages in central hillside areas. Insurance providers benefit from the county's varied risk profiles, ranging from wildfire-prone hillside properties to flood-consideration areas near the Delta, requiring targeted product offerings for different agent networks.

Technology and service providers discover that Contra Costa County agents operate in a uniquely competitive environment where differentiation matters significantly. With over 11,000 licensed professionals serving diverse communities, agents actively seek tools, marketing services, and platforms that help them stand out in specific neighborhood niches, creating substantial opportunities for B2B companies offering specialized real estate solutions and lead generation services.

Current Property Listings

As of 3/27/2026, Judy Ka Yee Sin has 1 property for sale in Lafayette and surrounding areas.

$599,000

Listed 2026-03-12

649 Spillman Cir
Vacaville, CA  95688

Beds: 4.0
Baths: 3.0
Sq Ft: 2,388
Lot: 4,500 sf
Single Family Map
View Full Details

$1,449,000

Listed 2026-01-12

141 Park Ave
Walnut Creek, CA  94595

Beds: 3.0
Baths: 2.0
Sq Ft: 1,834
Lot: 8,910 sf
Single Family Map
View Full Details

Current Property Rentals

Judy Ka Yee Sin currently has no rental properties available in Lafayette and surrounding areas. Check back later.