```
Janet Robertson Williamson

Janet Robertson Williamson
Real Estate Agent (Salesperson)
Belvedere Tiburon - CA

Salesperson (CA: 00628777)

49 years experience

REALTOR® 0 Active Listings Serves Marin County, CA
View on Realtor.com

About Janet Williamson

Janet Williamson is a seasoned real estate professional with a career spanning over four decades. Since obtaining her real estate license in 1980, she has consistently prioritized her clients’ needs, ensuring successful transactions through a dedicated and focused approach. Janet excels in understanding her clients’ requirements, allowing her to tailor her services effectively. One client noted, “Her commitment to our complete satisfaction and long-term happiness was evident throughout the process.”

With extensive experience, deep market insights, and strong negotiation skills, Janet is well-equipped to navigate the competitive landscape of Marin County real estate, making her an essential resource for both buyers and sellers. A decade ago, she partnered with her daughter, Sally, creating a dynamic team that benefits clients through shared vision, mutual respect, and a robust work ethic. Their combined expertise and extensive networks position them as a formidable force in the industry.

Having relocated from Scotland, Janet has called Belvedere home for many years. She is actively engaged in her community, supporting initiatives such as the Reed Schools Foundation and the Belvedere/Tiburon Library. As a mother of two and a grandmother of six, Janet possesses a profound understanding of the Marin area, equipping her to expertly guide clients in their search for the ideal home.

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

$2,627,700
Avg. Listing Price
From Janet's portfolio
3.7 / 3.0
Avg. Beds/Baths
Typical property size
2,515 sf
Avg. Square Footage
Interior living space
283
Active Listings
Current inventory

Marin County's real estate market stands as one of California's most exclusive and geographically diverse property landscapes, where million-dollar homes nestle against rolling hills and waterfront communities command premium prices. This affluent market north of San Francisco attracts buyers seeking luxury living with natural beauty, creating a unique ecosystem where properties routinely sell for well above state averages and inventory remains perpetually tight.

The county's 1,632 total actively licensed agents serve a sophisticated clientele across dramatically different terrain, from Tiburon's waterfront estates to Mill Valley's wooded enclaves. What makes this market particularly interesting is how these 1,632 agents with email connectivity have adapted to serve both tech executives seeking modern amenities and families prioritizing top-rated schools, all while navigating some of California's most complex zoning regulations and environmental constraints.

Major Marin County, California Real Estate Markets

San Rafael anchors the county as its largest city and commercial hub, offering relatively more affordable options while still maintaining Marin's signature quality of life. The city's diverse neighborhoods range from charming Craftsman homes in the Gerstle Park area to newer developments near the civic center, making it a focal point for first-time Marin buyers and those seeking urban conveniences without San Francisco price tags.

Mill Valley and Sausalito represent the county's premium waterfront and hillside markets, where properties regularly exceed $2 million and buyers compete for homes with Golden Gate Bridge views or redwood grove settings. Meanwhile, Novato in the north provides the county's most family-oriented market, featuring newer construction and larger lots that appeal to buyers prioritizing space and value within Marin's prestigious school districts.

Market Dynamics and Geographic Complexity

Marin County's real estate dynamics are heavily influenced by its geographic constraints, with hillsides, wetlands, and open space preserves limiting developable land and maintaining artificial scarcity. This creates micro-markets where a property's elevation, view corridor, or proximity to hiking trails can dramatically impact values, requiring agents to possess intimate knowledge of neighborhood-specific factors that don't exist in more uniform markets.

The market also experiences unique seasonal patterns driven by both school calendars and weather, as many buyers time purchases around the acclaimed Marin school system while sellers capitalize on the county's stunning spring and summer landscapes. Fire risk in hillside areas and flood considerations in low-lying regions add additional complexity layers that sophisticated buyers expect their agents to navigate expertly.

Why Businesses Need Marin County, California Agent Contact Data

Companies serving the luxury home market find Marin County agents invaluable for reaching high-net-worth clients who invest heavily in premium home services, from custom landscaping to smart home technology. These agents regularly work with clients whose home improvement budgets exceed most people's annual salaries, making them crucial referral sources for businesses offering high-end residential services.

The county's agent network also provides unique access to environmentally conscious consumers who prioritize sustainable building materials, solar installations, and eco-friendly home solutions. Given Marin residents' strong environmental values and substantial disposable income, businesses offering green products or services find these agent relationships particularly profitable for generating qualified leads and premium project opportunities.

Contact Information

Brokerage
Compass
Office Address
1550 Tiburon Blvd Ste U
Belvedere Tiburon, CA  94920
(Marin County)
Office Phone
415-383-1900
Office Fax
415-789-5659
Mobile
415-713-3348
Email
janet.williamson@************

Current Property Listings

Janet Williamson currently has no properties listed for sale in Belvedere Tiburon and surrounding areas. Check back later.

Current Property Rentals

As of 1/31/2026, Janet Williamson has the following rental properties available in Belvedere Tiburon and surrounding areas.

$3,950

Listed

468 Tehama St Apt 11
San Francisco, CA  94103

Beds: 1.0
Baths: 1.5
Sq Ft: 1,151
Single Family Map
View Full Details

$9,500

Listed 2026-01-17

31 Antilles Way
Tiburon, CA  94920

Beds: 3.0
Baths: 2.5
Sq Ft: 2,224
Single Family Map
View Full Details