Karen Dee Mattis

Karen Dee Mattis
Real Estate Agent (Salesperson)
Round Rock TX

Salesperson (TX: 0650064)

12 years experience

REALTOR® 6 Active Listings Serves Williamson County, TX
View on Realtor.com

Contact Information

Brokerage
Realty Texas

Office Website
Office Address
2000 S Ih 35 Ste E-1
Round Rock, TX  78681
(Williamson County)
Office Phone
512-476-5348
Office Fax
Mobile
18006801022
Email
karen@realtytexas.com

Service Areas

Austin: TX Brushy Creek: TX Hornsby Bend: TX Cedar Park: TX Round Rock: TX McNeil: TX Wells Branch: TX Bee Caves: TX Lakeway: TX The Hills: TX Hudson Bend: TX Sunset Valley: TX Barton Creek: TX Dripping Springs: TX Bear Creek: TX Bee Cave: TX Village of the Hills: TX Shady Hollow: TX Lost Creek: TX West Lake Hills: TX Rollingwood: TX Mustang Ridge: TX Creedmoor: TX San Leanna: TX Manchaca: TX

About Karen Mattis

**Karen Mattis, Realtor®**

Karen Mattis returned to her Texas roots in 2011 after spending time in San Marino, California. As a native Texan, her decision to move back was driven by a desire to reconnect with her family, who reside across the state from Brownsville to Dallas.

In Georgetown, Karen became actively involved in local governance, serving as Chair of the Greater Water Committee. In this role, she tackled significant challenges related to the provision of safe and reliable water across the extensive 400-mile area managed by the Chisholm Trail Special Utility District (CTSUD). Her dedicated efforts culminated in the successful transfer of assets and liabilities from CTSUD to the City of Georgetown in 2014, followed by the acquisition of the 400-mile Certificate of Convenience and Necessity (CCN) in 2015.

Karen brings the same commitment to her real estate practice, ensuring that her clients receive exceptional service tailored to their needs. She is also proud to participate in Realty Texas’s Military Rebate Program, which offers a 20% commission rebate to military personnel at closing.

With a longstanding passion for real estate, Karen has built custom homes and renovated over 15 properties across California and Texas. Outside of her professional pursuits, she enjoys gardening, golfing, backpacking in the Sierra Nevada, biking, and swimming.

Williamson County, TX Real Estate Market Analysis (Single Family Homes)

$557,430
Avg. Listing Price
From Karen's portfolio
3.8 / 3.0
Avg. Beds/Baths
Typical property size
2,502 sf
Avg. Square Footage
Interior living space
5589
Active Listings
Current inventory

If you're looking to buy a Williamson County real estate agent email list, you're in good company. Mortgage lenders, title companies, and insurance providers use this data to reach agents who can refer clients directly to their services. PropTech companies use it to demo new platforms to an active, local agent base. Recruiters at brokerages use it to identify and approach licensed agents ready for a change. Continuing education providers use it to fill courses before license renewal deadlines hit.

This list puts you in front of {{AGENT_COUNT}} actively licensed real estate agents in Williamson County, Texas — all with verified email addresses. Of those, {{CELL_COUNT}} also include cell phone numbers for direct outreach. Whether you're running a drip campaign, a product launch, or a recruiter blast, this is the contact data that connects you to the people who actually matter to your pipeline.

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

Every record in this list is sourced directly from the Texas state real estate licensing board, so you're starting with official, verified data — not scraped junk from random websites. New emails are added weekly, the full list is cleaned monthly, and the entire database is completely refreshed bi-annually. That ongoing maintenance is what backs the 96% deliverability guarantee. Cheap alternatives don't offer that because they don't do that work.

Dr Bill has been selling real estate agent lists since 2005 and has moved over 31,000 lists to clients across the country. That track record matters when you're making a purchasing decision. You're not testing an unknown vendor — you're buying from the most experienced name in agent contact data, with a deliverability guarantee most competitors can't touch.

How to Use This Williamson County Agent List

The most common use is cold email outreach through platforms built for it. Zap Contact at zapcontact.com is purpose-built for this type of campaign and works seamlessly with this data format. Beyond email, the list supports direct mail campaigns, SMS and phone outreach using the included cell numbers, and LinkedIn audience matching to layer in social touchpoints alongside your email sequence.

You can also segment the list by broker versus individual sales agent, letting you tailor messaging based on decision-making authority. A title company pitching a new partnership speaks differently to a broker-owner than to a buyer's agent. The data structure supports that kind of targeting so your campaigns land with the right message to the right contact.

Why Williamson County, Texas Agent Data Matters

Williamson County covers a dense cluster of fast-growing cities including Round Rock, Cedar Park, Georgetown, Leander, and Pflugerville. Each of these markets has its own agent ecosystem, and with {{AGENT_COUNT}} licensed agents operating across the county, there's real volume here worth reaching. A statewide Texas list buries these contacts in noise — a county-level list puts them front and center.

The list is available at the state, county, city, and zip code level — and no other vendor offers zip code-level segmentation within Williamson County. That means you can target agents operating in a specific zip code, perfect for hyper-local campaigns where geography directly affects relevance and response rate.

Current Property Listings

As of 6/27/2026, Karen Mattis has 6 properties for sale in Round Rock and surrounding areas.

$125,000

Listed 2023-07-25

21465 Lakefront Dr Lot 798
Lago Vista, TX  78645

Beds:
Baths:
Sq Ft: 0
Lot: 14,140 sf
Land Map
View Full Details

$78,000

Listed 2024-11-04

36 Keystone Rdg Lot 36
Buchanan Dam, TX  78609

Beds:
Baths:
Sq Ft: 0
Lot: 25,265 sf
Land Map
View Full Details

$180,000

Listed 2024-11-20

Rocky Holw Lot 94
San Saba, TX  76877

Beds:
Baths:
Sq Ft: 0
Lot: 453,024 sf
Land Map
View Full Details

$180,000

Listed 2024-11-21

Rocky 95 Holw WE Lot 95
San Saba, TX  76877

Beds:
Baths:
Sq Ft: 0
Lot: 438,214 sf
Land Map
View Full Details

$360,000

Listed 2024-11-21

Rocky Holw Lots 94 & 95 w
San Saba, TX  76877

Beds:
Baths:
Sq Ft: 0
Lot: 875,556 sf
Land Map
View Full Details

$165,000

Listed 2025-10-18

214 Fawn Ct
San Saba, TX  76877

Beds:
Baths:
Sq Ft: 0
Lot: 219,978 sf
Land Map
View Full Details

Current Property Rentals

Karen Mattis currently has no rental properties available in Round Rock and surrounding areas. Check back later.