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Meet the Team

REAL ESTATE IS PERSONAL.
SO IS THE WAY WE DO IT.


The Kallner Collective is a team within SERHANT. Arizona built around a simple idea: our clients should never have to wonder what’s happening, what comes next, or whether something has been overlooked.

We work together, really together. Behind every conversation, showing, offer, negotiation, and decision is a team sharing information, thinking ahead, and paying attention to the details. You’re never relying on one person to have every answer or be everywhere at once. You have the perspective, experience, and attention of The Kallner Collective behind you.

With more than 25 years of experience helping shape our approach, we’ve learned that exceptional service isn’t about one big moment. It’s answering the call. Knowing the neighborhood. Catching the detail. Having the difficult conversation. Anticipating what comes next. And doing those things with the same level of care for every client, every time.

That consistency is something we take seriously. Whether you’re buying your first home, quietly acquiring a luxury property, selling one you’ve loved for years, or making a move that changes what life looks like next, you should know exactly what it feels like to work with us.

Thoughtful. Prepared. Tenacious when it matters. And always in your corner.

That’s The Kallner Collective.

Kathleen Kallner Real Estate Agent Headshot
Kathleen Kallner

Associate Broker | Team Lead
Gracie Kallner Real Estate Agent Headshot
Gracie Kallner

REALTOR®
Jared Derringer Real Estate Agent Headshot
Jared Derringer

REALTOR®
Drew Anderson Real Estate Agent Headshot
Drew Anderson

REALTOR®
WHAT OUR CLIENTS SAY

Kathy and The Kallner Collective go above and beyond. For an out-of-state buyer, they made the process extremely simple, and their advice and communication throughout were valuable and spot on. Would certainly use them again down the road.

— Tim H.

WHAT OUR CLIENTS SAY

Kathy and The Kallner Collective were amazing! They helped immensely with the home-buying process for my first home. Can not recommend SEHRANT/The Kallner Collective enough.

— Nathan N.

WHAT OUR CLIENTS SAY

Kathy and the entire team at The Kallner Collective are simply the Best and recently helped me find and purchase my dream house. I was searching for a very long time and had very specific requirements, but they patiently showed me homes until I found just the right one. Always friendly, responsive, helpful, and understanding - you won't be disappointed!

— Stuart B.

WHAT OUR CLIENTS SAY

Working with Kathy and her team was a fantastic and seamless experience! She understood our timeline and provided expert guidance throughout the entire process, and was always available to answer any and all questions we had. As a family with a new baby, we were so pleased that Kathy understood our needs and was able to guide us through the process of finding the right property, and her keen insights all...

— Garrett N.

WHAT OUR CLIENTS SAY

Kathy Kallner and The Kallner Collective are amazing! Not only are they fun, a joy, and just the best to work with, they are professional, accommodating, responsive, and they know anything/everything real estate. They listen, always engaging us in having perspective conversations about the search, property, and what else might be out there. They were an asset, a true partner, and we feel grateful to have...

— Cammy W.

WHAT OUR CLIENTS SAY

Kathy Kallner with The Kallner Collective assisted my parents with two homes a few years ago, and now my husband and me with our home in Queen Creek. Kathy gave us the opportunity to shop for homes online through the MLS on our own. We identified one that seemed to have everything we were looking for: location, amenities, right number of bedrooms and baths, age of the home, and price. She and her team im...

— Christina P.

WHAT OUR CLIENTS SAY

Kathy and her team were great in selling our home. They were incredibly thorough, had great communication, and made sure we were set up for success every step of the way. The process was seamless, and we have them to thank for an amazing offer on our home. Thank you!

— Jody B.

WHAT OUR CLIENTS SAY

Kathy and The Kallner Collective were truly fantastic to work with! They were enthusiastic about helping us find the perfect home and offered honest, insightful feedback on the properties we considered. When it came time to negotiate, I’m so grateful we had Kathy at the table—she worked to get us the best deal possible on our new home. I highly recommend The Kallner Collective team!

— Jenell M.

WHAT OUR CLIENTS SAY

Kathy and her team were an absolute pleasure to work with! They supported us every step of the way, ensuring we felt confident and informed throughout the process. Even when we hit a few bumps, Kathy's patience and expertise truly stood out. She not only secured multiple offers on our house in record time but also went above and beyond to advocate for us during a tricky negotiation with a difficult selle...

— Jared C.

WHAT OUR CLIENTS SAY

Kathy and her team took great care of me through my first-time home-buying process. Kathy was patient with me and made sure I ended up in a place that was exactly what I was looking for! When Kathy was out of town, she left me in great hands! Even a few months after I closed, Kathy and her team continue to check in on me. Thank you, Kathy + team!

— Maria K.

WHAT OUR CLIENTS SAY

Working with Kathy and The Kallner Collective was an exceptional experience from start to finish. Their professionalism, market knowledge, and attention to detail set them apart. They communicated clearly, stayed proactive throughout the process, and made every step feel seamless. Their teamwork and dedication truly made a difference, and I would highly recommend them to anyone looking for a smooth, high...

— Don W.

WHAT OUR CLIENTS SAY

Five stars without hesitation. The Kallner Collective are officially our real estate ride or die! We were connected to Kathy through friends who had a great experience buying a home with her. Working with her was the best decision we made in the entire home-buying process. We had already found a house we loved but were less than thrilled with the agent we’d originally been paired with through a large nat...

— Stephanie M.

WHAT OUR CLIENTS SAY

Great service and response times. We'd happily work with her and her team again.

— Eric T.

WHAT OUR CLIENTS SAY

Kathy was an amazing realtor - from start to finish, incredibly responsive, knowledgeable, and wise!

— Caleb L.

WHAT OUR CLIENTS SAY

Drew was phenomenal to work with. Talk about professional and very knowledgeable in his craft. He made this a seamless process for me, and not one time did I ever have to question anything. He did a great job explaining everything to me. I highly recommend working with Drew!

— Alex G.

WHAT OUR CLIENTS SAY

Jared was absolutely amazing! He helped us secure the best property for the best price! He is an expert in negotiating and truly cares about his clients. Really appreciate how flexible he was whenever we saw a house we were interested in! I am beyond impressed with how he helped us throughout the whole homebuying process!

— Natalie

WHAT OUR CLIENTS SAY

Drew was truly exceptional! We were looking for a home in AZ and lived out of state. We were looking for someone who was hard-working, honest, friendly, and knowledgeable. We quickly observed all these traits in Drew. Drew made the process a smooth and easy one. We were impressed with Drew’s level of knowledge and the amount of data he had about the market. Drew was always available for home tours and ne...

— Tifanie P.

WHAT OUR CLIENTS SAY

Jared was so knowledgeable and helpful. We bought a home out of state and were so very nervous abt the process, but Jared and the whole team made it such an easy experience. We can’t thank them enough!

— Kathy H.

WHAT OUR CLIENTS SAY

Drew was phenomenal with helping us on the purchase and sale of a home in Scottsdale. We are not originally from the area, so his local expertise in the area, and professionalism with marketing, negotiating, and selling proved very valuable for us. He is extremely proactive, providing feedback throughout the process, professional, knowledgeable, and very reliable. With a great team behind him, he proved ...

— Jim B.

WHAT OUR CLIENTS SAY

Jared did an amazing job helping us with the purchase of a duplex in Coronado, AZ. He was always available and managed to produce everything we asked him for almost instantly. I highly recommend Jared as your realtor, and I felt way more comfortable buying a house with him helping during the entire process. His knowledge and expertise are unmatched.

— Patrick R.

WHAT OUR CLIENTS SAY

Drew did an excellent job as my realtor to help me find my first home. He went above and beyond to walk me through the process and close the deal!

— Joe P.

WHAT OUR CLIENTS SAY

Gracie was incredibly diligent, patient, flexible, and fun to work with. I'm grateful to have had her input during my first time buying.

— Jess P.

WHAT OUR CLIENTS SAY

We would highly recommend using Kathy Kallner for your next real estate transaction! We listed in a rough time of year. Right around Christmas, however, Kathy was able to get us on all the real estate platforms with her marketing strategies and got us a full-price offer in just weeks! Communication, service, and professionalism were amazing!

— Noah Y.

WHAT OUR CLIENTS SAY

Working recently with Kathy Kallner and her team on the purchase of our new home in Cave Creek was really fantastic. They are professional, very experienced, knowledgeable about the market, and really easy to work with. They make the process seamless and handle all the details. They are always accessible. I highly recommend Kathy Kallner and SEHRANT/The Kallner Collective team for your real estate needs ...

— Lou H.

WHAT OUR CLIENTS SAY

I could write volumes about Kathy and her team, but I do not need to! All I need to say is Kathy is awesome! And her team member awesome as well! Not only are they professional, but very knowledgeable about the whole process. I definitely recommend them!

— Edith W.

WHAT OUR CLIENTS SAY

Kathy has helped us purchase 4 homes, and each transaction has been a seamless experience. She’s a shark when it comes to negotiating and always has creative ideas up her sleeve to get the deal done. She’ll take the time to understand what you’re looking for and share her opinion where needed. You’ll thoroughly enjoy your experience with Kathy and her team!

— Mary P.

WHAT OUR CLIENTS SAY

Kathy was absolutely amazing to work with during the sale of my home. From the very beginning, she was professional, knowledgeable, and always had my best interests at heart. She kept me informed every step of the way and made what could have been a stressful process feel smooth and easy. Her dedication, responsiveness, and attention to detail truly set her and her team apart. I am so grateful for her an...

— Dinah C.

View All

Featured Properties

For Sale

5843 E CALLE DEL SUD
$9,400,000

5843 E CALLE DEL SUD, Phoenix, AZ 85018

  • 5 BEDS
  • 6 BATHS
  • 6,953 Sq.Ft.

Courtesy of SERHANT.

For Sale

6587 N PALMERAIE Boulevard 2020
$5,200,000

6587 N PALMERAIE Boulevard 2020, Paradise Valley, AZ 85253

  • 3 BEDS
  • 4 BATHS
  • 3,202 Sq.Ft.

Courtesy of SERHANT.

For Sale

41611 N 113TH Place
$4,795,000

41611 N 113TH Place, Scottsdale, AZ 85262

  • 4 BEDS
  • 5 BATHS
  • 4,985 Sq.Ft.

Courtesy of SERHANT.

For Sale

140 E RIO SALADO Parkway 1201
$3,950,000

140 E RIO SALADO Parkway 1201, Tempe, AZ 85281

  • 4 BEDS
  • 5 BATHS
  • 3,783 Sq.Ft.

Courtesy of SERHANT.

Pending

6615 N 39TH Way
$3,490,000

6615 N 39TH Way, Paradise Valley, AZ 85253

  • 4 BEDS
  • 5 BATHS
  • 3,791 Sq.Ft.

Courtesy of SERHANT.

Active Under Contract

4241 S QUINN Avenue
$3,250,000

4241 S QUINN Avenue, Gilbert, AZ 85297

  • 4 BEDS
  • 5 BATHS
  • 4,126 Sq.Ft.

Courtesy of SERHANT.

For Sale

000 N Sundance 504-20-969
$3,195,000

000 N Sundance 504-20-969, Buckeye, AZ 85326

Courtesy of SERHANT.

For Sale

140 E RIO SALADO Parkway 1103
$2,900,000

140 E RIO SALADO Parkway 1103, Tempe, AZ 85281

  • 3 BEDS
  • 3 BATHS
  • 2,945 Sq.Ft.

Courtesy of SERHANT.

Active Under Contract

245 Wilson Road
$2,750,000

245 Wilson Road, Sedona, AZ 86336

  • 4 BEDS
  • 5 BATHS
  • 3,128 Sq.Ft.

Courtesy of SERHANT.
View All

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We pride ourselves on providing personalized solutions that bring our clients closer to their dream properties and enhance their long-term wealth. Contact us today to find out how we can be of assistance to you!

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Contact Details

The Kallner Collective

[email protected]

(480) 213-3284