Texas Property Sisters Realty Group


McKinney’s  FAVORITE Realtors® 

McKinney's Best and Favorite Realtors. The Texas Property Sisters

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McKinney’s Favorite Realtors®!  Monica Szewczyk and Julie Williams formed Texas Property Sisters, LLC in 2013.  Following successful sales careers in corporate America, the two decided to take their business experience and team up in Real Estate. 

Monica Szewczyk

Monica started her career working for a large hotel chain. She then moved into sales and sales leadership roles for a global training and consulting company in Dallas.  She developed excellent sales, interpersonal and negotiation skills during this time working with top business leaders in the areas of sales, service and leadership training.  When her second daughter was born, she stepped away from the corporate world and became a successful entrepreneur with a national jewelry company where she was recognized for top sales for many years.   

Julie Williams

Julie worked for several high-tech firms in the global sales arena including Hewlett-Packard, Dell, and Microsoft.  Her clients were Fortune 100 companies such as Hertz, EDS, Wal-Mart, Exxon, JC Penny, 7-11 to name a few.  As a sales manager, Julie developed strong people skills and worked on large contract negotiations.  She was recognized as a top performer at each of these companies.

Both of the “sisters” have lived in McKinney in the Stonebridge Ranch area for more than 20 years.  Monica and her husband, Todd, have two daughters.  Julie and husband Jerry, have 3 daughters, 10 grand-children and 1 great-grandchild.



Since forming Texas Property Sisters, Julie and Monica have enjoyed great success.  They have been named Top 25 Women in Business in McKinney, Living Magazine Reader’s Choice Best Realtors in 2019 and 2022, Reader’s Choice Favorite Realtor in 2020, 2021. 2022 and 2023, Real Producers Award for Top 1% of North Texas Realtors in 2022 and 2023, D Magazine Best in 2023 and Top Producers and are consistently in the top team sales for their local Brokerage Office. The Texas Property Sisters have been featured numerous times in both McKinney Living and Community Impact magazines.

Read the latest McKinney Living article about the Texas Property Sisters.



Julie and Monica are both licensed Realtors® which means that they are members of the National Association of Realtors subscribing to a strict code of ethics, professionalism, and knowledge of the local real estate market.  They are required to complete continuing education to stay up on the latest real estate laws, contracts, and policies.  Additionally, both Monica and Julie are Accredited Luxury Home Specialists (ACHS).

There are several reasons to work with The Texas Property Sisters Realty Group including:


Julie and Monica will identify the right property for you based on your budget and needs. Their knowledge of the local market helps them evaluate properties to ensure they are priced accurately.

Buying or selling property usually requires reading and signing financial documents and legal forms. The paperwork may be different for each market and done per an area’s laws and regulations. Any unintentional mistake or delay can be costly or lengthen the process of selling or buying a home. Monica and Julie are experienced in dealing with these requirements and will guide you through buying and selling a house, making the process effortless and smooth.

Saves Time

There are many things involved in the purchasing or selling of property, and it is time-consuming. It not only requires listing your property but identifying properties for sale, interviewing potential buyers, plus investigating, and inspecting properties. Julie and Monica handle these things on behalf of the buyer or seller. They research what needs to be repaired or installed before you buy or to increase your home value if you are selling.


REALTORS® know other REALTORS® or trusted individuals connected to the real estate market. These persons can be interior decorators, real estate lawyers, contractors, appraisers, or mortgage brokers and many others. Often, they will know another agent who’s looking for a specific property.  Monica and Julie have an extensive network which ensures access to information that will be valuable for the selling and buying of property.

Expert Negotiators

The demand for houses has increased, especially during the COVID-19 pandemic, with many people working remotely. The increase in demand has created a housing shortage and competition in the real estate market. Texas Property Sisters will effectively negotiate with potential buyers and sellers to get the best possible price. They will argue in your best interests and ensure that a deal is complete.


As REALTORS®, Julie and Monica are held to and must adhere to a higher standard of moral and ethical practices than real estate agents. They are required to follow a Code of Ethics related to the selling and buying of property and how to interact with the parties involved. This helps you as a buyer or sellor because you can be assured that they will always have your best interest at heart and will follow all laws as they relate to real estate transactions.

Monica and Julie will personally handle every aspect of your real estate transaction.  They never turn anything over to assistants or administrative clerks.  Using their knowledge of the local market and experience, they will guide you every step of the way.

Essentially, you get two Realtors® for the price of one!

Charitable Work

Texas Property Sisters Realty Group feel blessed to be a part of McKinney and Collin County and believe in giving back to this great community that supports our business.  The Sisters are active members of the McKinney Chamber of Commerce.  Julie is a past Chair of the Chamber board and also serves on the board of the McKinney Economic Development Corporation.  Julie is also on the McKinney Main Street Board and is a graduate of the 2019 Leadership McKinney class. Monica is the Past-President of BNI for McKinney and part of the Accelerated Network Group. Monica also serves on the Board of 100 Women of McKinney.  They both deliver for Meals on Wheels of Collin County. 

Each year Julie and Monica do volunteer work and donate a part of their sales to local charities.  Below is a list of some of the charities that we contribute to:

Meals on Wheels Collin County
McKinney Education Foundation
CASA of Collin County
Samaritan Inn
Love Life Foundation
Children’s Scholarship Foundation
The Seed Project
McKinney Roots
Hugs Cafe
La Tiendita
100 Women of McKinney
One Heart McKinney
Direction 61:3

McKinney's Best and Favorite Realtors supporting and giving back to the communities they serve.
McKinney's Best and Favorite Realtors supporting and giving back to the communites they serve.
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