The Grogg-Martin Auctioneers & Realty team works hard to ensure your real estate or auction experience is the finest it can be. We strive for excellence in every transaction with the hope that our efforts will equate to referrals to friends and family of those we serve.

Meet the Team

Mike Patka, Co-Owner of Grogg-Martin Auctioneers & Realty

Mike Patka

Co-Owner, REALTOR®, and Auctioneer

Born and raised in Northern Indiana and a Magna Cum Laude graduate of Glen Oaks Community College, Michael brings a significant understanding of the agricultural industry, as well as commercial business and economics. As an Owning Partner in Grogg-Martin Auctioneering and Realty, Michael maintains licenses in auctioneering and real estate. He has served the LaGrange community for over 20 years and looks forward to serving his clients for years to come!

You can reach Mike at (260) 350-8603 or by email at

Ken Martin

Ken Martin


Ken was born and raised Ohio, moved to Indiana when he was only one. His dad, Dallas Martin, was an auctioneer at the Topeka Livestock Auction. Ken grew up with it, working alongside his dad at the auction barn until he was 16. He also helped with real estate and personal property auctions. After working in the construction business, he started an equipment rental company, Topeka Rental Center. When Dallas retired, he and Mike bought out his dad’s auction business and now they run it as a team. Ken is married to Tina and they have two children, Audrey and Derrick.

You can reach Ken at (260) 463-6267 or by email at

Dallas Martin

Dallas Martin


Tina Martin, LaGrange County Realtor® in Indiana

Tina Martin


Grogg-Martin Auctioneers & Realty is proud to announce the newest addition to our Realtor® Broker family of agents, Tina Martin! Native to Shipshewana and LaGrange County, Tina brings a significant understanding of the area. She aims to deliver top-notch customer service on a personal level with her clients and is excited to help buyers and sellers come together!

Give Tina a call at (260) 463-1523, or send email to

Rod Lantz, LaGrange County Realtor® in Indiana

Rod Lantz


Serving the tri-county area since 2003, Rod brings extensive knowledge of the industry and community to his clients with trustworthy and friendly service. He looks forward to helping grow the real estate division with Grogg-Martin and is excited for the future! Let the team of Grogg-Martin REALTORS® help maximize your dollars or find the home of your dreams!

Give Rod a call at (260) 463-6652, or send email to

Rod Lantz was exceptional at selling our homes. We had two houses we needed to sell within a few months of each other. He got them up and sold extremely quickly. He was always available to answer any questions we had and was on top of every task. He went way above and beyond in helping us with every aspect. His calming demeanor was a God-send in a very stressful time. I highly recommend using Rod for any and all REALTOR® needs.

Kelly O'Connor
Lamar Bontrager, Auction Agent

Lamar Bontrager

Auction Agent

Having grown up on his family dairy and hog operation just west of Honeyville in Millersburg, and former business owner of a local feed mill, Lamar brings a significant understanding of the agricultural industry, as well as commercial business and economics to the Grogg-Martin family and to his clients!

Being a firm believer in hard work and an attitude of honesty and integrity, he looks forward to serving the tri-state area and in helping Grogg-Martin Auctioneers & Realty “Sell The Earth and Everything On It!®”

Join us in welcoming Lamar to our family of knowledgeable and experienced auctioneers and call him to book your next Real Estate or Personal Property auction!


If you have questions about our services we’d love to hear from you!


Always a good place to go to get a item of your choosing.

Khristopher W.

All the auctioneers and ring clerks and workers are funny, honest, and try their best to get it all right to please bidders and consignees alike!

Faith G.