Our Team

Sonoita Realty is a locally owned & operated Full Service Real Estate firm with a reputation as a solid and trustworthy company established in 1991. We are the only FULL SERVICE real estate company in Sonoita! A team that works together for all your Residential, Land and Property Management needs. Realtors, National Association of Realtors.

Our Team of Agents

Kathy O'Brien - Broker/Owner

kathyobrien@sonoitarealty.com / (520) 405-1800


Kathy O’Brien is a hardworking hands-on real estate Broker/Owner & Property Manager serving the Mountain Empire since January 1998. Her family has deep respected roots in the community and she continues their legacy by building a solid reputation as a "trustworthy" professional dedicated to the needs of her clients. Extensive knowledge of the community with the highest level of skill and care has made her a top producer & relocation specialist. She has experience in dealing with the most difficult transactions to the easiest and believes “every” client matters! She knows the Mountain Empire in ways only a long-time local can- Better, because she is trained to spot problems & opportunities in properties, looking beyond the outward appearance. Her community service to news & other local issues makes her a reliable Realtor to Buyers and Sellers to skillfully represent your interests!

David Baker - Sales Associate

classicpropertiesaz@gmail.com / (520) 818-8130


David Baker has over 35 years of real estate experience, having been a successful builder/developer/investor, and business executive managing substantial land holdings for native American groups. David has the experience, attention to detail and patience to help you with your real estate needs.

Nancy Stiffey - Sales Associate-Realtor

nancystiffey@sonoitarealty.com / 520 471-6506


Nancy Stiffey is a wonderful, dedicated and studious individual with a giving heart! She relocated to Sonoita from Tucson in 2013 after falling in love with the community over 20 years ago. Her background in business management and education offers a keen insight into the Real Estate industry. She is always up to the task or challenge at hand and is the first to help anyone in need! As a very reliable individual, you can count on Nancy to work hard for you with all your real estate needs!

Dee Demski-Sales Associate-Realtor - Realtor

deedemski@sonoitarealty.com / 520 400-1393


Dee Demski has been established in the Sonoita community since 2004. With a background in the beauty industry of over 23 years she then decided to purchase an existing Hair salon that she currently owns and operates in Sonoita. She also has experience working as local EMT/Firefighter for the Sonoita/Elgin Fire District. This self-dedication of serving others is the reason why she has joined the Profession of Real Estate to help those in search of selling or purchasing in the community that is dear to her heart. With a passion for Equestrian activities including trail riding and the wine culture, makes her a skilled local to better assist and inform her clients about the Mountain Empire as it relates to real estate market.

Larry DeMun- Realtor -

shortydemun@gmail.com / 520 732-9179*


Larry DeMun graduated NAU Business college in Management. Developed several sales companies in the US along with a Contract manufacturing business in Mexico. He moved to Sonoita originally in 1991 to have close proximity to Nogales. He has called Southern Arizona his home the last 33 years. He has built out several layouts for manufacturing, built several homes and one commercial building, been involved in several large commercial (government projects ) and continues to be active in construction and development. His extensive construction background is an added benefit to any real estate transaction.

Other Team Members

Eddie O’Brien – Co-Owner / Maintenance Manager

kneobrien@gmail.com / (520) 784-4354


Eddie O’Brien has over 35 years in the construction industry in Tucson, AZ with a background in heavy equipment & project management/Estimator. He relocated to Sonoita in 2009 after marrying his wife, Kathy O’Brien and launched his own business, Fast Eddie’s mowing and maintenance. He is a valuable asset to Sonoita Realty as a Co-Owner and Maintenance Manager and a respected resident to the community offering his assistance where needed.