UBG is all Over the Valley

United Brokers Group (UBG) is a unique brokerage that provides its clients an unparalleled level of service. UBG was founded in 2009 has grown to nearly 200 agents since. It is a brokerage founded on principles of dedication, growth, and community service which creates an environment that facilitates total client care in all aspects.  The agents at United Brokers Group are career agents. They are dedicated to the career they have chosen and in turn are industry leaders.

Days on Market

We sell your house faster


Average DOM

Dedicated Agents


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Average Days to Contract

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The UBG Team

United Brokers Group is a special real estate company that looks to affiliate and work with only the best in the industry…
Full-time agents that are invested in their career and aim to give the client their very best!

David Kowalski

David Kowalski


David Kowalski wants to live in a world filled with innovative and enthusiastic real estate agents, where emails are short, transactions close early and clients love their UBG agent. As CEO, he helps real estate agents grow their business into rewarding careers through collaboration, education, and determination.

David pulls from 25 years of technology and financial experience interfacing with sales and marketing teams to help agents incorporate technology and sales systems into their business. Although he thinks software is usually the answer (and codes for fun), he can’t help but admire the smile real estate agents can bring to faces of their clients when they find the perfect home.

When he’s not helping agents use technology, you can find him re-watching any season of Shark Tank, testing Amazon’s same day delivery promise or walking way too far in the desert heat to find his car ( that is almost an obsession).

David grew up in Toronto and has called Gilbert, AZ home for the past 12 years.

Laurie McDonnell

Laurie McDonnell

President & Designated Broker

Laurie McDonnell brings over 20+ years of experience in the real estate industry to her role as Designated Broker for United Brokers Group. Laurie has been licensed since 2005 obtaining her broker’s license in 2010. Before entering the sales side of real estate she was an appraiser for fifteen years.

Before her role as Designated Broker, she was consistently in the top 10% of sales at UBG. In 2011 she graduated from the SEVRAR Leadership Program. She has served on several SEVRAR committees such as RAPAC, Grievance, Leadership Development, and Governing Documents. Laurie was voted by her peers to serve as a Director on the 2014-2015 Board of Directors at SEVRAR. Additionally, she was selected to serve as an AAR Director for 2015-2017. Laurie also serves on ARMLS Rules Committee, Broker Advisory Council and Hearing Panel Member.  Laurie also serves on AAR Risk Management, Grievance and Broker University.  Laurie is passionate about the community being actively involved with organizations such as The Care Fund, Susan G. Komen Race for the Cure, Tempe Healing Fields and the USMC Toys for Tots. When she is not working or volunteering, Laurie enjoys spending time with her family, reading, traveling, hiking and taking in the attractions and natural beauty in Arizona.

Mary Ann Shryack

Mary Ann Shryack

Managing Broker

Mary Ann Shryack is an Associate Broker/REALTOR®, MBA, CRS, GRI…and some might say, detail oriented!  When she isn’t listing or selling houses or mentoring new agents, Mary Ann is working behind the scenes on projects for UBG.  She is also an animal lover, Toastmaster and has two cats that rule her house.

Chelsea McDonnell

Chelsea McDonnell

Director of Agent Services

The unflappable, cheerful, conscientious Chelsea McDonnell is United Brokers Group’s Director of Agent Services.  She has a steel trap mind and knows the ins and outs of UBG’s schedule, offices, orientation, and paperwork protocol.  Chelsea is an ASU grad, licensed agent, and Tempe native involved in several leadership committees and philanthropies.  She loves pineapples and is an avid reader.

Beth Cox

Beth Cox

Market Analyst

Beth Cox’s background teaching mathematics and grading papers prepared her for her UBG roles as Lead Market Analyst and Managing Review Broker.  She studies sales stats constantly and enjoys keeping agents and their clients apprised of relevant trends through data visualization.  Beth has been with the company since it started in 2009 and thinks of her wonderful colleagues as a second family.
Andrew Wright

Andrew Wright

Design & Marketing

Andrew is a marketer and graphic designer with degrees in design and design management from the Herberger Institute (ASU School of Design). He uses his skill set to promote United Brokers Group and is passionate about projecting the professionalism of their agents. When Andrew is not facilitating the awesome, he is recycling and eating Mexican food.

Keith Hammerl

Keith Hammerl

Design & Marketing

Born in Mesa, Keith is a graphic designer, marketer, and musician with a degree in Urban Planning from ASU. His love for graphic design and music lead him down a path of creative media and marketing for his band. At UBG he uses his experience and ability to see things from outside of the industry and design and market with a fresh perspective.

UBG Office Locations

UBG Corporate Office

106 South Kyrene Road, #2 Chandler, AZ 85226

(480) 539-4775

UBG Gilbert Office

3303 South Lindsay Road, #108 Gilbert, AZ 85297


Our Mission

We believe through collaboration, education, and determination that being a real estate professional is a long term, personally rewarding and profitable career.  Our mission is to enable our real estate agents to thrive in an industry of sole proprietors. We foster an environment that enables our agents to serve their clients and communities with the highest levels of service, commitment, and integrity.

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