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Tammy M Gwinn

Tammy M Gwinn
Real Estate Agent (Broker)
Mercer Island WA

Broker (WA: 125047)

REALTOR® 1 Active Listings Serves King County, WA
View on Realtor.com

Contact Information

Brokerage
Realogics Sotheby's International Realty - Mercer Island

Office Website
Office Address
Po Box 818
Mercer Island, WA  98040
(King County)
Office Phone
206-922-3846
Office Fax
Mobile
206-922-3846
Email
tamm*@*************.com
Show Email for $5

About Tammy Gwinn

Tammy Gwinn stands out as a prominent emerging residential real estate agent in the Seattle region. With over 25 years of experience in the local business landscape, she has honed her expertise in Capital Markets and Corporate Securities, focusing on business development for both public and private companies.

Renowned for her integrity and comprehensive market insight, Tammy is dedicated to meeting her clients' needs through a collaborative and adaptable approach. She serves as a strategic advocate, leveraging her analytical skills to align her clients' objectives with market realities.

Tammy is a recognized leader and speaker in Senior Real Estate Services, fostering strong relationships that address the complexities of family transitions. She possesses a deep understanding of the emotional and practical factors influencing buying and selling decisions, guiding her clients through what can often be a challenging process.

Her extensive background in the local building and construction industry enhances her ability to navigate intricate issues related to structures, architectural plans, inspection reports, and market dynamics. Clients frequently commend her for her confident and credible advocacy.

As a Senior Global Real Estate Advisor, Tammy's clients value her strategic thinking and investment acumen. She adeptly identifies market shifts and adjusts her strategies accordingly, ensuring effective solutions even in difficult circumstances.

As a member of the Gwinn/Bundy Group at Realogics Sotheby's International Realty, Tammy excels at integrating new clients into the community, drawing on her extensive local knowledge and personal connections.

King County, WA Real Estate Market Analysis (Single Family Homes)

$1,517,081
Avg. Listing Price
From Tammy's portfolio
3.8 / 2.9
Avg. Beds/Baths
Typical property size
2,564 sf
Avg. Square Footage
Interior living space
6800
Active Listings
Current inventory

Mortgage lenders, title companies, PropTech startups, real estate recruiters, insurance providers, and continuing education companies rely on targeted agent outreach to grow their business in King County's competitive market. Our verified email list of 8,434 actively licensed real estate agents gives you direct access to the professionals who drive transactions in Seattle, Bellevue, Renton, and surrounding communities.

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Why Buy a King County Real Estate Agent Email List From Dr Bill

Our King County agent data comes directly from Washington state licensing boards and undergoes monthly verification to maintain 96% deliverability rates. While cheap alternatives flood the market with outdated contact information and generic emails, we guarantee current, verified addresses for actively practicing agents who can actually respond to your outreach campaigns.

Every email address in our 8,434-agent database has been cross-referenced against current licensing records and validated through our proprietary verification system. This monthly update cycle ensures you're not wasting resources on agents who've left the industry or changed brokerages, giving you the data quality that drives measurable ROI from your marketing investment.

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Deploy these verified email addresses through cold-email platforms designed for purchased lists, such as Zap Contact at zapcontact.com - Dr Bill's purpose-built platform that maximizes deliverability for agent outreach. Mainstream platforms like Mailchimp and Constant Contact prohibit purchased lists, making specialized cold-email tools essential for effective campaigns targeting real estate professionals.

Beyond email marketing, this comprehensive database supports direct mail campaigns, phone outreach, and LinkedIn connection strategies. Segment your approach by separating broker-owners from sales agents, or target specific zip codes within King County to align your messaging with local market conditions and agent needs in each community.

Why King County, Washington Agent Data Matters

King County's 8,434 licensed agents operate across diverse markets from downtown Seattle's urban condos to Sammamish's luxury homes, requiring targeted messaging that resonates with specific geographic segments. No other vendor provides King County agent data at the zip code level, giving you unprecedented ability to customize outreach for agents in Kirkland, Federal Way, Auburn, or any of the county's distinct communities.

County-specific targeting dramatically outperforms statewide marketing blasts because agents face unique challenges based on their local markets, price points, and client demographics. Our King County focus ensures your mortgage programs, title services, or agent tools reach professionals who actually work in your service area, maximizing response rates and conversion potential.

Current Property Listings

As of 3/27/2026, Tammy Gwinn has 1 property for sale in Mercer Island and surrounding areas.

$6,150,000

Listed 2025-07-01


Lopez Island, WA  98261

Beds: 3.0
Baths: 3.5
Sq Ft: 5,288
Lot: 248,950 sf
Single Family Map
View Full Details

$2,099,000

Listed 2026-03-11

9027 SE 50th St
Mercer Island, WA  98040

Beds: 5.0
Baths: 2.5
Sq Ft: 3,100
Lot: 17,415 sf
Single Family Map
View Full Details

Current Property Rentals

Tammy Gwinn currently has no rental properties available in Mercer Island and surrounding areas. Check back later.