Sign up to receive
our newsletter

We'll send you updates about real estate
and finding a home in your area

  • This field is for validation purposes and should be left unchanged.

Meet Our Team

The CG Realtors understand the ever-changing real estate market and has perfected strategies needed to sell and manage properties in any climate.

Client’s needs and concerns always come first, and our team is here to listen and assist.

The CG Realtors unmatched knowledge of the Foothill Communities, real estate market and well-established reputation stands out from the crowd. Our attention to detail, pride in personal service and distinguished reputation is unparalleled. Repeat clients and referral base entrust us to guide them through every step of real estate process. Our commitment to clients rises above expectations, and our commitment to client services is unsurpassed. With three generations of real estate professionals specializing in the Foothill communities of Southern California, our expansive network, and high-producing team have become an elite member of Realty One Group, and are in the top 1% of agents nationwide.

The CG Realtors mission is to develop a team of outstanding individuals who will always thrive to provide a high level of customer service that will create raving fans while maintaining an atmosphere that is full of energy, organized and fun. To always keep a positive and gracious attitude and treat others as we would want to be treated. To guide, motivate and provide the support that will lead our team to continued success.

Char Costantino

Partner & Listing Specialist

In the Foothill Communities, the name Char Costantino is synonymous with the real estate market. Char was born in Salinas California, and raised in San Dimas. Char’s unmatched knowledge of the Foothill Communities, real estate market and well-established reputation stands out from the crowd. Char’s attention to detail, pride in personal service and distinguished reputation is unparalleled.

Her repeat clients and referral base entrust her to guide them through every step of real estate process. Char’s commitment to her clients rises above expectations, and her commitment to client services is unsurpassed. Char is part of three generations of real estate professionals specializing in the Foothill communities of Southern California. Her expansive network, and high-producing team have become an elite member of Century 21 Prestige Properties, and are in the top 1% of agents nationwide.

Char is also passionate about giving back to the community. As part of EWI, Executive Women International, she brings together key individuals from diverse businesses for the purpose of promoting member firms, enhancing personal and professional development, and encouraging community involvement, as well as providing scholarships to adults facing economic, social, or physical challenges, who are looking to improve their situation through educational opportunities.

Char and her husband Dennis are also sponsors of Steven’s Hope for Children, and support the families of seriously ill or injured children during a child’s extended treatment and care so that no family is left alone during their time of a child’s health crisis. Char resides in Upland with her husband Dennis Costantino.

Dennis Costantino


Dennis Costantino is not only the namesake, he is the foundation of CG Realtors. Dennis was born in Charleroi, PA, who relocated to California in 1955 and is a well-established real estate agent. As Char Costantino’s partner, their combined market knowledge and experience is unequaled.

As a computer engineer, and operations specialist he brings a wealth of high tech ingenuity and structure to CG Realtors. Dennis ensures all objectives are being met with exceeded expectations. He manages and is a constant source of support to the group. Dennis continually earns loyalty of clients with his professional and highly experienced negotiation experience. He is a master at managing the crucial details of each transaction with a comprehensive understanding of the industry, and is a vital part of CG Realtors.

Dennis is active in the community, and is it important for him to give back. He takes part in numerous charity events, and is a board member of Steven’s Hope for Children. As a board member of Steven’s Hope, he works to ensure that no family is left alone during their time of a child’s health crisis. Dennis resides in Upland with his wife Char Costantino.

Eric Crumbaker


Eric Crumbaker was born in Alta Loma, and raised in Upland California. He attended Damien High School in La Verne where he excelled in sports, particularly in soccer. He then attended University of California Riverside where he dedicated himself to working his way up to becoming a Division 1 soccer player.

After graduating college, he temporarily moved to Chicago to assist his sister in building her business. After much success, and 1.5 years in Chicago, he made the decision to move back to Southern California where he worked as a personal banker at Wells Fargo. Eric then obtained his real estate license and joined CG Realtors. As Char Costantino’s Son, Eric is a third generation real estate agent serving the Foothill area of Southern California. He brings three generations of knowledge and experience to every transaction. Eric provides peace of mind and expert guidance throughout every step of the buying/selling process, delivering consistent results. As one of our team leaders, Eric is a driving force motivating each member of the team to be extraordinary. He is a forward thinker, and an action packed motivator. Eric is passionate about self-improvement, being a better person and a better leader.

Eric is innovative, determined and highly motivated. Eric is actively setting a new standard in real estate. When it comes to charities, he is passionate about Steven’s Hope for Children, the Special Olympics and participating in Toys for Tots. He embraces being grateful, giving back and being happy!

Nadine Melendez

Executive Assistant

Growing up in San Gabriel, Nadine Melendez joins CG Realtors with a Bachelors Degree in Business Administration. Transitioning into the real estate industry this past year, she brings her expertise and over 12 years experience to the team as Char Costantino’s Executive Assistant. Highly motivated and detail-oriented, Nadine brings with her the passion and dedication she has for success and seizing all opportunities that life presents to her. Nadine is a vital member of CG Realtors. When she is not working, you can catch her spending time with her two kids. 

Yvette Reyes

Transaction Manager

Yvette Reyes grew up in Fullerton California and went to college at Orange County Business College where she received a trade certificate in Advanced Data Entry. Yvette joins the CG Realtors team with 6 years experience as a Transaction Manager. Yvette is so excited to be part of a team that is so family oriented, has a fun atmosphere, top notch marketing and always looking for the next big trend. With her positive personality and outlook on life, Yvette is the perfect addition to the team. When she is not at work, you can find Yvette traveling, spending time with her family and shopping!

Monique Zacarias

Sales Partner & Listing Agent

Monique Zacarias is a Southern California native. She joins CG Realtors with 20+ years of real estate experience with a strong background in client services. Having worked with some of the top names in real estate, Monique is respected for her tenacious spirit and utmost professionalism.

Working her way up the real estate ladder, she is well versed in all aspects of the real estate industry. With a reputation for hard work, attention to detail, and outstanding client service, her communication, and unrivaled motivation make Monique a perfect fit for CG Realtors. She is passionate about offering the utmost in customer service to older clients, first time home buyers and sellers ensuring the highest ethical standards.

When Monique is not working, she’s spending time with her family and three beautiful children and traveling as much as she can. She also takes pride in her children’s accomplishments and is dedicated to providing them with opportunities for unlimited growth and potential to succeed.

Travis Tickel

Sales Partner

Travis Tickel grew up in the Bay area. With a military background and years of experience in the entrepreneurial field, Travis was excited to join CG Realtors and start a new chapter in his life. Travis spent 4 years in the US Marine Corp and it help shape him into the man he is today. Travis has an extremely positive and motivating personality and is always looking to help others. While he is not grinding away at work, he is home with his fiancé Krissa and new baby boy Theo.

Stacie Crumbaker

Sales Partner

Stacie Crumbaker grew up in Upland, and is a third generation realtor. Stacie’s background is in fashion and decided to make a change this past year. With a ton of motivation and drive, Stacie is committed to helping her clients find the perfect homes. As Char’s daughter, Stacie is very excited to be joining the family business and learning from the best. When she’s not working, you can find her spending time with her family and looking forward to having her first baby boy in the coming months.

Sarah DiMarco

Sales Partner

Born and raised in the beautiful mountain filled land of Kazakhstan, Sarah speaks both Kazakh, and Russian. She attended the prestigious Almaty University and earned a Bachelor’s Degree in Business and Management. After graduating she worked in the banking industry, but then returned to her hometown to help build her family’s café/grocery store. Since moving to the USA in 2006, she has predominately been a homemaker and mother to her beautiful daughter. She has traveled to many countries around the world, combined with spending her childhood under the Soviet Union; gives her great appreciation of living in the greatest country in the world.

As a full time Real Estate professional, with Southern California’s #1 Real Estate company, Sarah sees it as her personal duty to fulfill all of your Real Estate dreams. Speaking multiple languages and being well versed in many different cultures, Sarah brings a diverse approach to the Real Estate business. By using the best marketing, resources, and her expertise in the Real Estate market, Sarah stops at nothing to go above and beyond to be there for her clients every step of the way.

Outside of the Real Estate world, Sarah is a resident of Rancho Cucamonga where she loves to entertain her family and friends. Going on hikes and working out are among her favorite hobbies, along side cooking home made Russian and Kazakh food that she grew up enjoying. At the end of a long day filled with serving clients, she enjoys nothing more than coming home to spend time with her family.

Lucas Trinidad

Inside Sales Associate

Lucas Trinidad is Texas born and raised. He grew up in Poth Texas and joined the military at 19. He excelled quickly and achieved the rank of sergeant. Lucas loves being a member of the CG Realtors team! Lucas is a fitness enthusiast and enjoys helping others. “You will get all you want in life if you help enough, other people will get what they want.”

Brian Coble

Inside Sales Associate

Brian Coble grew up in the Alta Loma and Claremont area, and graduated from Claremont High in 2006. After high school he discovered his passion for health and fitness had grown to wanting to coach others. He spent 7 years in Washington state where he opened his own gym business and coached football at a local high school. He recently moved back to Claremont in May of 2016 and couldn’t be more excited to be home. Brian joined the CG Realtors team and his thrilled to be a part of such a motivating and ground breaking team. During his off time, Brian coaches fitness and coaches football at Claremont High. Brian loves making connections with people and helping people better themselves. It is his goal to one day coach a team to a Championship.