Realty ONE Group Generations | York

3995 E Market Street Suite 300, York , PA 17402
  •   5   (63 reviews)

Meet the team

Get to know the 22 agents at Realty ONE Group Generations | York.

About Jennifer (Jen)
Meet Jen Mummau — Realtor®, Advocate, and Guide for Life’s Big Moves After more than 20+ years in healthcare, I made a bold leap into real estate many years ago—a decision driven by my passion for helping people through life’s biggest transitions. I bring the same heart, attentiveness, and empathy that I gave to my patients into every client relationship I build today. I’m not your average Realtor®. I don't just open doors; I help you navigate the emotional and financial complexities of buying or selling a home. My clients often become close friends because I treat every transaction like it’s personal—because it is! Whether you're downsizing after decades, investing for the first time, or buying your dream home, I’m with you every step of the way, guiding with a calm presence, strategic mindset, and a whole lot of heart. My brand is rooted in authenticity, trust, and a calm, confident approach that keeps clients grounded during big decisions. I don’t do fluff or pressure—I do real conversations, real solutions, and real results. I’ve built my business by listening more than talking, showing up consistently, and prioritizing people over transactions. The numbers have followed—doubling each year since I began. What makes me different? I understand the life part behind the real estate. I see beyond the contract and the closing table to what really matters: feeling seen, heard, and supported. This work is personal to me—and when we work together, your goals become my mission. Let’s find what home means for you! Visit my website at Jenmummau.myrealtyonegroup.com
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Kettybel VelazquezDiaz
Kettybel VelazquezDiaz

Licensed Real Estate Agent

  5   (10 reviews)
About Kettybel
I am a real estate professional being focused on properties located in York, Adams, and Lancaster Counties. I was raised in Las Piedras, Puerto Rico and then moved to York, Pennsylvania in 2012. I am bilingual (Spanish and English), and my bilingual skills help a diversity of clients. My passion and dedication allow me to offer the highest quality of customer service to my clients. I am deeply passionate about helping them achieve their needs and goals. I believe in communication in every detail of the transaction. The knowledge and expertise that I possess can bring peace of mind to both buyers and home sellers who have previously struggled with selling their homes on their own, or working with another agent. My integrity, energy, and hard work is exemplified throughout the process. I genuinely believe that Experience, Professionalism, and Knowledge matters. My desire to make people smile and to help people achieve their dreams were the building blocks in my decision to become a real estate agent. My trademark is treating everyone I represent with the respect, dignity, and empathy, which explains why many of my clients become good friends. My broad market perspective, advanced negotiation skills and thoughtful approach puts you in safe hands and can ensure a successful transaction when buying or selling a home. When working with buyers or sellers, I am assertive and effective without being too aggressive. I can provide the same level of unmatched service for all my clients at any stage of their real estate journeys. On a personal note…I attribute my success not only for my passion for homes but also to my intuition regarding the psychology of buying and selling a home. I believe that a home is the primary refuge for both emotional sanctuary and financial security and I would love to help you stay connected to the real meaning of a home while making sure your sale or purchase is rewarding and worth it! “I am honored when clients choose me to help guide them through the process” Soy un agente profesional de bienes raices enfocada en propiedades localizadas en en el área de York, Adams and Lancaster condados. Fui criada en Las Piedras,Puerto Rico y me mude a York , Pennsylvania en el 2012. Soy Bilingue (Espanol y Ingles) y mis habilidades de ser biligue han ayudado a una gran diversidad de clientes. Mi pasion y dedicacion me permite ofrecer un servicio de alta calidad a mis clientes. Estoy profundamente pasionada en ayudar a mis clientes a lograr sus metas y complementar sus necesidades. Mi integridad, energia y trabajo continuo es demostrado durante el proceso. Yo realmente creo que la Experiencia, Profesionalismo y Conocimiento importa. Mi deseo de hacer a las personas sonreir y el lograr ayudar a las personas a alcanzar sus suenos fueron los bloques de contruccion que me ayudaron en la toma de la decision de ser un Realtor de Bienes Raices. Mi meta es tratar con respeto, dignidad y empatia a cada persona que represento y es la razon por la cual mucho de mis clientes se convierten en buenas amistades. Yo creo en comunicacion en cada detalle durante la transaccion. El conocimiento y experiencia que yo poseo puede traer tranquilidad a la mente de tanto el Comprador como el Vendedor que ha sufrido tratando de vender su casa anteriormente por si mismo o trabajando con otro Realtor. Mi perspectiva completa del mercado y mis avanzadas habilidades como negociante te pone en buenas manos y te puede asegurar una transaccion exitosa cuando vendido o comprando un hogar. Cuando estoy trabajando con Vendedores o Compradores yo trato de ser asertiva y efectiva sin tener que ser muy agresiva. Yo puedo proveer el mismo imcomparable servicio en cualquier etapa de su aventura en bienes raices. En una nota personal...Yo atributo mi exito no solo por mi pasion por hogares pero también a mi intuición respecto a la psicología de la compra y venta de un hogar.
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About Timothy

Timothy has 11 sold property listings over the past 12 months.

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About McKenna

McKenna has 4 sold property listings over the past 12 months.

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Brian Kocsi
Brian Kocsi

REALTOR®

  5   (4 reviews)
About Brian
I'm a Realtor, Accredited Buyer's Representative, Military Relocation Professional, and a Divorce Real Estate Specialist with an RCS-D™ designation. I will always go above and beyond to help you sell your current home or buy the home of your dreams. My team and I also help divorcing homeowners and divorce attorneys gather house documents and evidence for case files and to assist in the decision-making process of keeping or selling the home. My goal is to make the process as clear and simple for you as possible. My 37 years as a teacher and school principal have given me the opportunity to work with a huge variety of people in all types of situations. I've learned about the value of clear communication; I stay available and in contact with my clients throughout the selling or buying process. My organizational skills will ensure nothing is overlooked and you are kept in the loop from start to finish and beyond. I go above and beyond for every client! If you want someone like me working for you, then let's get started!
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About Taylor

Taylor currently has 3 active property listings and 7 sold property listings over the past 12 months.

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Realty ONE Group Generations | York

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About us

Realty ONE Group Generations | York is a real estate office. They have 63 verified reviews with an average rating of 5 stars. They currently have 3 active property listings and 6 sold property listings over the past 12 months worth $1,800,000.

Our reviews

  5  
63 reviewsacross 32 different locations, showing 6.
24 days ago
Exceptional communication, process, and outcome for first homebuyers!

Could not give McKenna enough praise! We came in blind to the home buying process. McKenna explained everything to us in ways we could understand, found us exactly what we were looking for and in our price range, stay 100% on top what needed to be done to negotiate and get an accepted offer. She has helped us with things even outside of the home such as solar panels and finding insurance. We have since closed and she is still here for us-helping set up utilities and communicating with the sellers agent for any questions we still have. McKenna is of outstanding moral character- we were never pressured or rushed or presented a house outside of our budget. This process was so much easier because we completely trusted her recommendations and expertise knowing she had our best interest at heart. Finally, McKenna made herself available any time of day to us-always responding right away, even on nights and weekends. We couldn’t have done it without her! Thanks so much McKenna!!

McKenna Walker

McKenna Walker

  5   (5 reviews)
7 months ago
I had a fantastic experience working with Brian

I had a fantastic experience working with Brian. He was extremely knowledgeable, honest, highly organized, and took the time to listen to what I really needed in a home. Throughout the entire process, he kept me informed at every step and took the time to thoroughly inspect each part of the home as we walked through. His transparency and attention to detail made him a trusted advisor from start to finish. I could not have asked for a better guide through this journey!

Brian Kocsi

Brian Kocsi

  5   (4 reviews)
7 months ago
BEST REALTOR EVER

Jen was amazing at communication. She kept me up to date every step of the way through selling my house! She gave me very wise council when the offers came in. Jen went above and beyond for me. I was not physically allowed to pick up more than 10 pounds and she helped wrap up some last minute things for the house to be ready to be sold! She negotiated with the buyers realtor efficiently and firmly to get me the best price on my home! I would definitely recommend Jen to any way buying or selling their home! Thank you Jen

Jennifer (Jen) Mummau

Jennifer (Jen) Mummau

  5   (28 reviews)
8 months ago
Jen has been a remarkable agent all around.

We finally did it! We sold our home of nearly twenty years and bought our second family home. We can thank our agent Jennifer Mummau, for her guidance and all of her support. She provided us with a wealth of guidance in the process. She was very flexible and knowledgeable. Jen showed her flexibility with our tight work schedules. She was very considerate of our time and always professional. When it came to decision making, she informed us of every step and often walked us through the entire process assuring us that we will make it happen. The sale of our home for a new fresh start. Jen made it happen! It has been a pleasure to work with her. I would highly recommend her to anyone that is looking to buy or sell a home.

Jennifer (Jen) Mummau

Jennifer (Jen) Mummau

  5   (28 reviews)
8 months ago
Brian was extremely responsive and attentive to his sellers on our recent transaction together

Brian was extremely responsive and attentive to his sellers on our recent transaction together. I was the mortgage lender for the buyers of his sellers' home. He ensured they were on track each step of the way and went above and beyond to ensure all parties were happy and in good hands. Brian should be on your call list when interviewing for your next realtor.

Brian Kocsi

Brian Kocsi

  5   (4 reviews)
8 months ago
We highly recommend Jen!

We reached out to Jen to help us through a long distance move to PA. She stepped up to the challenge and was instrumental in making sure everything continued through the process successfully. Jen is a true professional and thinks outside the box in every aspect. We're very happy with our experience with Jen.

Jennifer (Jen) Mummau

Jennifer (Jen) Mummau

  5   (28 reviews)
Show all 63 reviews

Our properties

Realty ONE Group Generations | York has 3 properties for sale and sold 6 properties in the last 12 months, showing 4, sorted by most recent activity

For Sale
$289,900
197 S Main St
Yoe PA 17313
3
1
Single-Family
Listing courtesy of Realty ONE Group Generations | York
SoldJun 4, 2026
$535,000
772 Rishel Drive
Emigsville PA 17406
4
4
2
Single-Family
Listing courtesy of Iron Valley Real Estate of York County and Realty ONE Group Generations | York
SoldMay 20, 2026
$345,000
2421 Carllyn Drive
York PA 17403
3
2
2
Single-Family
Listing courtesy of Kingsway Realty and Realty ONE Group Generations | York
SoldMay 13, 2026
$235,000
3159 Jayne Lane
Weigelstown PA 17315
Other
Listing courtesy of Realty ONE Group Generations | York
Show all 9 properties
Realty ONE Group Generations | York
Contact Realty ONE Group Generations | York
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