Dianne Masaoka

Dianne Masaoka
Real Estate Agent (Broker)
Bellevue WA

Broker (WA: 120677)

REALTOR® 3 Active Listings Serves King County, WA
View on Realtor.com

Contact Information

Brokerage
Office Address
14405 Se 36th St Ste 100
Bellevue, WA  98006-1588
(King County)
Office Phone
425-418-7628
Office Fax
Mobile
425-736-6020
Email
dianne.masaoka@redfin.com

Service Areas

Bellevue: WA Newcastle: WA Renton: WA East Renton Highlands: WA Hobart: WA Issaquah: WA Mirrormont: WA Sammamish: WA

About Dianne Masaoka

Dianne is a Licensed Broker and Realtor with extensive experience in various roles, including transaction manager, buyer's representative, and listing agent. Throughout her career, she has successfully facilitated hundreds of transactions, equipping her with a wealth of knowledge in connecting clients and navigating the complexities of real estate.

Each day, Dianne is dedicated to delivering exceptional support to her clients, guiding them toward their real estate objectives. She recognizes that the real estate industry parallels running a successful business, emphasizing the importance of cultivating strong relationships with vendors, colleagues, and clients. This relational aspect of her work brings her immense satisfaction, as she thrives on learning from and collaborating with exceptional individuals.

For those seeking assistance in achieving their real estate aspirations, Dianne is ready to help.

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

$1,681,188
Avg. Listing Price
From Dianne's portfolio
3.8 / 3.0
Avg. Beds/Baths
Typical property size
2,703 sf
Avg. Square Footage
Interior living space
5370
Active Listings
Current inventory

If you need to reach working real estate agents in King County, Washington, this list was built for you. Mortgage lenders, title companies, PropTech platforms, insurance providers, continuing education companies, and recruiters all rely on verified agent contact data to drive outreach campaigns that actually convert. Whether you're launching a new product, filling a pipeline, or growing a brokerage, the right contact list is the foundation of everything.

This King County agent list gives you direct access to {{AGENT_COUNT}} actively licensed real estate professionals with verified email addresses, plus {{CELL_COUNT}} agents who also have cell phone numbers on file. Use it for cold email sequences through platforms like Zap Contact (zapcontact.com) or other cold-email tools, for direct mail drops, for SMS outreach, or to fuel LinkedIn audience matching. No gatekeepers, no guessing — just verified contacts ready to work.

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Our data is sourced directly from Washington State licensing board records, so every contact reflects an agent who holds an active license — not someone who let their credentials lapse three years ago. New emails are added weekly, the full list is cleaned monthly, and we perform a complete database refresh every six months. That discipline is why we can back every list with a 96% deliverability guarantee, something the cheap data vendors pushing outdated CSVs simply cannot offer.

We have been in this business since 2005 and have sold over 31,000 lists across the country. That track record matters when you are deciding who to trust with your marketing budget. When you buy King County real estate agent email list data from us, you are buying from a team that has refined its sourcing and verification process over two decades — not a reseller running stale imports through a generic database.

How to Use This King County Agent List

The most immediate use is cold email outreach. Load the list into a platform like Zap Contact (zapcontact.com), build a short sequence, and you are in front of hundreds of active agents within hours. For higher-touch campaigns, combine email with direct mail to the same contacts for a multichannel approach that dramatically increases response rates. If you have cell numbers, layering in SMS or ringless voicemail can push conversion even further.

Segmenting by broker versus sales agent is a smart move if your offer differs for team leaders versus individual producers. You can also filter by city or zip code within King County to tighten your targeting for local events, geographic promotions, or territory-based sales teams.

Why King County, Washington Agent Data Matters

King County is home to Seattle, Bellevue, Redmond, Kirkland, Renton, and dozens of other active real estate markets that together represent one of the most productive agent communities in the Pacific Northwest. With {{AGENT_COUNT}} licensed agents operating across this county, a targeted list here puts your message in front of a dense, high-activity professional audience. Sending a statewide blast means your offer gets diluted across rural markets that may have no relevance to your business — local targeting changes that entirely.

We are the only vendor that delivers King County agent data segmented down to the zip code level, giving you surgical precision no other source can match. Whether you need agents in a single neighborhood or every zip in the county, the data is ready to deploy exactly how your campaign requires it.

Current Property Listings

As of 6/15/2026, Dianne Masaoka has 3 properties for sale in Bellevue and surrounding areas.

$995,000

Listed 2026-03-20

333 17th Ave
Seattle, WA  98122

Beds:
Baths:
Sq Ft: 0
Lot: 5,118 sf
Land Map
View Full Details

$150,000

Listed 2026-01-16

5900 Preston Fall City Rd SE Unit A
Fall City, WA  98024

Beds:
Baths:
Sq Ft: 0
Lot: 172,933 sf
Land Map
View Full Details

$739,900

Listed 2026-02-14

4265 Stossel Ave
Carnation, WA  98014

Beds: 4.0
Baths: 2.5
Sq Ft: 1,685
Lot: 1,681 sf
View Full Details

Current Property Rentals

Dianne Masaoka currently has no rental properties available in Bellevue and surrounding areas. Check back later.