Buy Sell or Lease!

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Algonquin personnel have exceptional educational qualifications and experience, both inside and outside of the real estate industry. This enables Algonquin to have deeper, more personalized client relationships.
“The reason a lot of people do not recognize opportunity is because it usually goes around wearing overalls looking like hard work.”
– Thomas Edison


Diane Mueller

Diane Mueller

Realtor, ABR, GRI


  • Lead agent
  • Licensed since 2003
  • Stephen F. Austin

Diane is a native of and currently resides in Plano. Since becoming licensed in 2003, Diane has completed several hundred real estate transactions in the DFW metroplex.

Clients choose to work with Diane for her full-service firm, ethics, experience, and expertise. Diane has consistently shown the ability to satisfactorily guide her clients through the buying and selling process.  Her strong base of loyal repeat customers is the reason Diane has been successful in this highly competitive sales environment.

She was frequently a top 20% and Double Diamond performer at Keller Williams prior to becoming a founding member of Algonquin Realty.

Larry Latham

Larry Latham



  • Real Estate Agent / Consultant / Investor
  • Texas A&M University, Engineering
  • University of Texas at Dallas, MBA with Finance concentration

Larry grew up in the North Dallas area and is very familiar with the neighborhoods in this rapidly growing area. Larry graduated from Jesuit College Prep High School in North Dallas, graduated from Texas A & M University with an Engineering degree, and completed an MBA with Finance concentration from UTD.

Larry has resided in Farmers Branch and in Carrollton and currently resides in Plano since 1992. Larry is a long term real estate investor with multiple rental properties owned and rehabbed; and as such, Larry understands the needs and goals of investors as well as the needs and goals of individuals and families looking to purchase or sell their homes.

Larry prides himself on customer service and providing the client with a smooth and trouble free experience.

Henrietta Small

Henrietta Davis


(469) 478-7765

  • Paul Quinn College, Bachelor’s in Business Administration
  • 20 years of Accounts Receivable Experience
  • Previously employment with Law Firm

Henrietta Davis, is a native of Dallas and has developed as a valuable employee in the finance field. She has 20 years of Accounting experience within the Law Firm Industry.

Her passion for Real Estate coupled with her financial skills allow Henrietta to assist clients with the financial aspects of home buying or selling, and deliver an excellent real estate experience. Henrietta is always hard-working and optimistic about finding the perfect solutions for her clients. She understands the importance of listening closely to details, to achieve her clients’ greatest goals and dreams.

Tiana Boehme


(580) 230-1292

  • Southeastern Oklahoma State University, Business Marketing
  • 10 years as a business owner
  • Licensed in Texas and Oklahoma

Tiana began her Real Estate Career in 2011 in the Allen area and currently holds a Texas and Oklahoma license. She services the North Dallas and Southeastern Oklahoma area and does multiple transactions each year in both states.

Tiana desires to guide her customers through the process of buying or selling their home in the easiest way possible. She works hard to put the wishes and goals of her clients first and takes pride in the ability to show great attention to detail. She  wants each of her clients to be able to refer her to their family and friends with the confidence that they will be treated with efficiency and integrity.


Tiffany Argueta


(972) 824-7624

  • Art Institute of Dallas, Fine Arts in Interior Design
  • Collin County resident
  • Customer-service oriented

Tiffany Argueta is native to the DFW area, and has owned properties in The Colony, Little Elm and Plano. She is well acquainted with the ins and outs of both buying and selling homes in the area.

Tiffany understands that each real estate transaction is unique and presents its own challenges. Her own experiences and customer-service oriented mindset enables her to navigate a smooth path to closing for her clients.

Tiffany holds a degree in interior design and is able to provide advice and tips for sprucing up and staging a home for sale.


Sherri Simpson

Realtor Associate


  • Buyer’s Agent/Listing Agent/Nurse
  • Lifelong Resident Grayson County
  • UT Arlington, Bachelors of Science in Nursing

Sherri has been a lifelong resident of Grayson County. She can put her insider knowledge to work and help you select the best neighborhood for your family’s needs. She also uses the latest Internet marketing tools to expose your property to the widest possible range of qualified buyers.

Additionally, Sherri has been serving the Collin County community as a nurse for 18 years now and is so excited to add real estate to her community focus. With a passion for service, she is ready to help with your home buying and selling needs.

Sherri really listens to you and will work tirelessly on your behalf. As a proud member of the Algonquin Realty family, she carries the values of hard work, integrity, and outstanding client service into everything she does. This means helping you understand each step of the buying and selling process. Sherri is honest and trustworthy and you can count on her to always do what is in your best interest.


Joanne Cross

  • Transaction Coordinator
  • Training/Marketing Support
  • Property Manager

Joanne graduated from North Adams State College with a Degree in Finance. She has been a resident of Plano for over 20 years. As a Real Estate Investor she has bought, sold, and renovated multiple properties in the DFW area. Raising her 3 children in Plano, she spent many years volunteering and serving on the PTA boards. She has enjoyed serving on the board and doing fundraising for many years at Chamberlain Performing Arts and currently a chairman at the Taylor Hooton Foundation nonprofit.


Jim Hallas


  • Owner
  • Broker
  • Clarkson University

With more than 15 years of independent operating experience in real estate, Jim is well versed in HOA management, property management, brokerage, and customer service. His real estate is backed by 19 years of upper-level business management at Texas Instruments, IBM and similar corporations.