meet the team

Kevin Craig

Team Lead

After a 27 year career as a division manager for The United Parcel Service, Kevin retired at age 46 and started a 2nd career in real estate. He graduated from The Arizona school of Real Estate and Business in 2004 and joined Russ Lyon Realty where he became a multi-million dollar producer within his first 18 months. Kevin has been recognized as a top producer in each subsequent year. In 2008, Kevin joined Keller Williams Sonoran Living and founded the S4 Group which began by specializing in short sale transactions in a failing economy. As the real estate market struggled, the S4 Group grew and quickly became recognized as short sale experts. Ultimately, S4 became the real estate group of choice for the Arizona Bankruptcy Court System. As the market shifted again, Kevin incorporated another business segment creating a synergy between investors, contractors, and specialized trades in fixing and flipping distressed properties and at the same time, improving neighborhood values. As the market slowly rebounded, Kevin added a luxury division to his S4 Group which today includes luxury resales as well as custom spec homes and build to suit customs. In 2013, Kevin was ranked #28 in the state of Arizona by The S4 Group now has expanded operations into Southern California, Las Vegas and Maui. In 2015, S4 Group was selected as a top producing team with Keller Williams International ranking in the top 100 closing $48.5 million in sales. Kevin resides in Gilbert, Arizona and recently celebrated his 33rd wedding anniversary with his wife Ronda. Kevin and Ronda have 3 married daughters and a total of 10 grandchildren.


Direct: (602) 725.2609 | Email:

Heather Patterson

Managing Director

Heather Patterson works alongside the S4 Real Estate Group as their Managing Director using her coaching, consulting and management skills to help the team realize their goals. Heather has spent the last 15 years coaching and consulting business leaders and their teams across the country and brings that experience to the group so they can continue to grow and expand personally and professionally. 

Heather has happily called Scottsdale home since November 2018.  When she’s not working, you can find her working out, golfing and adventuring outdoors with her family and friends. 

Direct: (808)352.9290  | Email:

Stacy Esman


My name is Stacy Esman, I’m passionate about Arizona and Real Estate! I’ve been buying and selling Arizona Real Estate since 1996 and love how this city is growing, expanding, thriving, and developing. I was raised a Phoenician, so I’ve seen significant and positive changes to this market. It’s a fabulous place to live and raise a family, ask me how I know! The cornerstones of my business are honesty, integrity and hard work. By implementing these qualities I strive to exceed the expectations of my clients, not just meet them. I built my business on a repeat and referral clientelle base, and would love to earn yours. My business focus is on single family homes and investment properties, often these go hand in hand, launching financial success and freedom. Please let me help make your next Real Estate transaction a positive and rewarding experience!

  • Specialties: Residential Sales, Luxury Sales, Investment Property, Foreclosures
  • Awards & Designations
  • CNE (Certified Negotiation Expert)
  • SFR (Short Sale/Foreclosure Resource)
  • Rookie of the Year – 2002
  • Residential Real Estate Expert and Top Producing Agent
  • Keller Williams Lifestyle Rookie of the Year

Direct: 602.881.9980 |

Alexis Enright

Luxury & Relocation Specialist

Alexis Enright is a REALTOR® who combines her love for the industry with her passion for people. A native of Northern California and a graduate of Saint Mary’s College, Moraga, she received her degree in Communication. While in the San Francisco Bay Area she was the lead dancer for the championship Golden State Warriors, choreographing exceptional routines, mentoring new dancers and representing the NBA.
She was a project and event coordinator at QVC, the leading global corporation in multimedia retailing. As the event coordinator for Dr. Davis Nguyen, a leading Beverly Hills plastic surgeon, marketing assistant for a renowned San Francisco plastic surgeon, and former assistant to an A-list celebrity, Alexis is known for her trustworthiness, knowledge, enthusiasm, and the ability to “get it done” in the face of challenges.
A dedicated and committed agent who consistently goes above and beyond for her clients, Alexis has successfully applied her expertise and market knowledge to guide local and national clients with real estate acquisitions, lease obligations, and relocation services. She has traveled the globe with her husband and understands the importance of finding the right house to call home. Her dedication to clients and love of helping others are what motivate her.
In addition to being a member of Scottsdale Area Association of Realtors (SAAR), Alexis is the founder of The Loving Paw, an online store dedicated to the support of animal rescue. She and her husband are also ambassadors for Athletes for Animals.

Direct: 209.298.7692 | Email:

Jen Link

West Valley Specialist

After 7 years of working in the mortgage industry as a loan processor and underwriter Jen Link decided to open up her own company as short sale negotiator in 2008 which lead to her getting her real estate license in 2009.  Jen Link became a certified short sale negotiator and successfully closed over 800 short sales with her team.  She continues to specialize in short sales and listings in the west valley.

Outside work Jen enjoys spending time with her husband of 12 years and 2 children. A boy active in baseball and a girl who loves to dance!  She also loves spending time at the gym with her CrossFit family and being adventurous with friends!

Awards & Designations:

  • 2011 Eagle Certificate of Recognition
  • 2013-Listed as one of Arizona’s top 10 agent’s in America’s Best Real Estate Agents “Real Trends 2013”.

Direct: 602.790.9928 | Email:

Mondai Adair

East Valley Specialist

“When you love what you do then you never feel like you’re working a day in your life”. Mondai has worked continually with some aspect of homes and building design since 1994 when she graduated from Tennessee with both architectural and interior design degrees. She has worked at top corporate design companies for 13 years, starting as an intern while in college. She began her 2nd career in real estate in 2004 and became “Rookie of the Year 2005” for best office production in her first year. She joined a business partnership with S4 managing partner Kevin Craig in 2004 and has worked with him since.

Mondai has maintained the Multi-million Dollar Producer Award with the South East Association of Realtors by loving what she does. She has used her background of project management and focus on customer service to successfully help buyers, sellers, and investors with all their real estate needs. Mondai strives to provide each client with the best real estate experience as possible throughout the process. Mondai specializes in luxury homes, new homes consultant, move-up home buyers, 1st time home buyers, relocation purchases, investor purchases/ fix and flips, and short sales.

Awards & Designations

Multi-Million Dollar Producer Award 2006-Present, Rookie of the Year 2005

Direct: 480.793.0977 | Email:

Sheila Vaughn


Arizona Resident for over 20 years, Sheila’s background prior to Real Estate comprised of over 35 years in the Marketing and Advertising Sales arena. With experience in Radio, TV, Print, Billboard, Digital and much more, she not only brings her real estate clients a passion for the Real Estate business, but also more importantly an added bonus of how to market and sell their homes! Her desire to become a Realtor started with her own experiences of buying and selling her own properties.

Successfully raising 2 beautiful children, now adults, her son Brandon, graduate with a Bio-Chemistry Degree from Arizona State University, is now owner and operator of a highly successful Medical Research Company in Scottsdale Arizona. Her daughter Captain in the US Army, Kasey, graduate with a Kinesiology Degree from West Point Military Academy, joined they USA Women’s Rugby Team in 2017 and recently traveled as an alternate at the USA Olympic Games at the 2021 Olympics in Tokyo Japan!

“I am excited to help both buyers and sellers in their transaction. You will be hard pressed to find an individual work harder to make sure the transaction goes smoothly, as well as provide complete service in preparing for the sale or the purchase, with a select list of incredible vendors and support to give you peace of mind!”

With special Real Estate designations in both areas of Military Relocation and Senior Real Estate Specialist, personal attention to detail at every turn is her forte, incredible negotiation skills and creating a positive experience is what you will experience with Sheila Vaughn, as referrals are her ultimate goal!

Along with her husband Mark Schleipfer they enjoy all outdoor activities including off road, camping, boating and of course with their two Huskies Max & Levi in tow!

Experienced Chief Executive Officer with a demonstrated history of working in the real estate industry. Strong marketing professional skilled in Sales, Media Buying, Sales Presentations, Direct Marketing, and Renewable Energy.

Direct: 602.750.6372 | Email:

Kelly Popovich


Kelly Popovich is a real estate agent born and raised in Arizona. She has witnessed its growth and change in all areas of the valley.

With Arizona State University as her Alma Matter in Education Law And Co-owner/operator of a family owned real estate business she leaves no stone unturned. She also has an affinity for helping seniors after eight years of working in the senior living industry assisting their families as they navigate through the steps of future downsizing or upsizing. With her military family background, she knows and understands the challenges they face during the relocation.

Kelly has a proven history of successful contract negotiations and is known for her professional integrity. Her experiences have given her the ability to work with families and investors for all of their real estate needs.
She has success in working with first time homebuyers, the luxury home market, relocation, investor purchases and sales, single-family homes, multi-generational homes and retirement living.

Away from her career, Kelly loves to spend time with her husband, sons, family and friends. The relationships in her life are what truly enriches every day! She is an active Advisory Board Member to the Glendale Salvation Army, BHHS Legacy Foundation Backpack Buddy Volunteer at Luke Air Force Base Arizona as well as an active member for MCYM; Military Community Youth Ministries.

She looks forward to utilizing her passion to find the right fit for every client and to work tirelessly to achieve their desired outcome!  

Direct: 602.291.0419 | Email:

Christoph Hirota


Christoph Hirota is a graduate from University of California-Davis receiving his B.A. degree in Communications. Being a 3.0 honors graduate while playing two sports at a top 5 university, he knows the importance of time management and getting things done in a timely matter.

Sports has always been a passion, which has allowed him to be a two sport athlete playing football and track/field at UC Davis. He has also made the Junior Olympics in track/field and has always surrounded himself with the top people in everything he does. He plans to do the same with his career. He knows what it takes to make success happen and he knows how to work hard for it.

Christoph has exceptional customer service experience and communication skills. He loves to travel and having lived in different places such as: Hawaii, Washington, California,Florida and now Arizona, he has always been able to connect with many different individuals from different backgrounds.

He is now a full time realtor with the S4 Real Estate Group & Keller Williams Realty Sonoran Living. His passion and commitment for wanting the best for his clients will separate himself from other realtors as he’s willing to work hard and efficiently to do the best job possible for them.

Direct: 425.458.8158 | Email:

Jim Caciola


Born in Tucson and raised in Phoenix, Jim has a special understanding of Arizona. There are specificities that you only learn from spending decades here, so Jim brings a lifetime of experience to the table.

Whether you are looking for a small condo or a massive acreage, Jim provides his buyers with personal service and an unrivaled attention to detail. Jim’s excellent communication and negotiation skills are noteworthy, but Jim’s ability to match his buyers with the perfect home is his greatest asset. He provides his sellers with personal service and an unrivaled attention to detail.

Jim’s sales business includes staging, professional photography, dynamic marketing, virtual tours, and cutting edge strategies to ensure your success. Jim attributes his success as a Realtor® to his passion for Arizona and desire to assist as many individuals as possible. As such, his mission is to help all people live their dream, in their dream home.

Direct:602.614.4083 | Email:

Sierra Blemaster


A childhood spent around spec homes in the valley’s luxury golf course communities and later flipping homes across Scottsdale, Chandler and Phoenix, Sierra became very comfortable with several different avenues of real estate. Real Estate investing and homebuilding go back four generations in her family, so it’s not surprising that she decided to build her career around helping investors and families buy and sell homes.

“I love watching the transformation of a house into a home and the excitement of each party involved. Whether it be a multi-million dollar third home, or a family buying their first home. Every detail, every deal is important”.

Sierra studied neuroscience at Baylor University and Psychological Sciences at the University of Arizona before returning to Scottsdale where she obtained her license and started on her career in real estate.

Prior to college, Sierra graduated from the internationally prestigious Culver Academies, where she had been the captain of their regarded varsity Sailing team. Sierra’s coach, who trains olympic sailors and yacht club teams when he’s not coaching at the Culver, hand picked Sierra to head up the Capri ‘22 fleet at the Academies’ summer program, which she did for two seasons.

The skills for sailing and real estate actually have a lot in common. Any sailor will tell you that sailing is very captivating; In racing you must always be observing, proactive to changing conditions and ready to adapt to sudden shifts. The same is true of real estate.

You’ll immediately recognize her calm, thoughtful, and strategic demeanor, that will allow you to rest easy knowing Sierra has all the details covered. Whether it’s your first home, or your 50th investment project, Sierra will work to make your entire transaction smooth sailing.

Direct: 323.876.2222 | Email: