When you think about building, think CornerStone.

Meet Our Dedicated Sales Team

Eagle River

darren_ruboDarren Rubo

Phone: 715-479-0001
Email: darrenr@cscb.net 

With a passion for design and construction, Darren uses his experiences in civil, environmental and mechanical engineering to capture the vision of his clients which in turn creates a blueprint of their personal investment.  Whether it’s a 1,000 square foot bungalow or a 10,000 square foot home of dreams, a small office space or an expansive commercial condominium, Darren’s knowledge of construction, experience and management abilities makes him the right choice for your next building project.

  • Born and raised in Eagle River, WI
  • Currently resides in Eagle River, WI
  • Married to Michelle McDonald
  • Two daughters Mikala & Bria
  • Hobbies- camping, hunting, and fishing
  • Sports- hockey and golf
  • Northland Pines High School
  • Madison Area Technical College
  • Degree in architecture
Work Experience
  • DOT
  • RMT, Environmental
  • C & D Construction
  • Hunter Engineering
  • CornerStone Custom Builders since 2001

kory-droesKory Droes

Phone: 715-479-0001
Email: koryd@cscb.net 

Kory grew up in the St. Germain area and has returned to the area after attending UW Platteville where
he earned a degree in Building Construction Management and Business Administration. Kory gained vast
experience managing and building residential projects in the Milwaukee area before moving back to his
homegrown roots.

  • Born and raised in St. Germain, WI
  • Currently resides in Eagle River, WI
  • Married to Liz
  • Hobbies- fishing, football and hunting
  • Northland Pines High School
  • UW Platteville
Work Experience
  • Tim O’Brien Homes
  • CornerStone Custom Builders since 2020


eric_kleinEric Klein

Phone: 715-356-0001
Email: erick@cscb.net

Eric has been in the home construction business most of his life, following in his fathers footsteps.  He finds the ability to assist clients in developing their dream homes in the Northwoods ultimately rewarding.  Eric has a high understanding of building design and offers his complete and honest opinion to assist clients to get the most build out of their budget.  He has a high standard of excellence in hearing the customer and paying attention to detail.  It is not unusual for Eric to maintain a long and lasting relationship with his clients.  He receives many referrals from them along with additional work of finishing basements and adding out buildings.  His strong track record of satisfied customers can assure you that you’re building with the best and will not be disappointed.

  • Born in central Wisconsin and raised throughout the state
  • Currently resides in Eagle River, WI
  • Two sons Keith and Robert and one daughter Heather
  • Hobbies- motorcycling, boating and snowmobiling
  • Sports- golf, billiards and swimming
  • Northland Pines High School
  • Tech college in military
Work Experience
  • Military-United States Air Force
  • Coca-Cola
  • Clint’s Cabinet Shop
  • Premier Homes
  • Winchester Homes
  • CornerStone Custom Builders since 2002

Tony Jansen

Phone: 715-356-0001
Email: tonyj@cscb.net

Building beautiful homes is Tony’s life and passion, and he knows that making a house a home lies in the details. His past experience includes design and construction of custom homes ranging in style from log, timber, traditional, mountain rustic and modern. With more than 20 years in the building industry, Tony knows the challenges of building, especially from a distance, and takes pride in guiding his customers every step of the way, from initial contact to turning over the keys. Tony feels very fortunate to be able to build homes in a place he loves and calls home. His
inspiration is derived from the wonderful people that allow him to share on the journey of designing and building their dream homes.

  • Born in Port Washington, WI
  • Has resided in the Northwoods since 1992
  • Currently resides in Minocqua
  • Four sons – Dylan, Tyler, Kyle and Nick
  • Hobbies- golf, snowmobiling and boating
  • Port Washington High School
  • Marquette University
  • UW-Milwaukee
  • Cardinal Stritch University
Work Experience
  • Northern Visions, Inc. – owned and operated
  • Benson Builders, LLC – Chief Operating Officer
  • Jansen Custom Homes – owned and operated

Tyler Healy

Phone: 715-356-0001
Email: tylerh@cscb.net

For Tyler it all started growing up with his father working in the HVAC industry.  He was intrigued with the process of developing a raw piece of land, and designing and building a home that some family would enjoy. Tyler attended UW Stout where he would receive his degree in Construction Management. After graduation, he was presented with an opportunity in commercial construction where he spent 10 years as a project manager. With this experience under his belt, he decided it was time to move his family back to the beautiful Northwoods of Eagle River.

  • Born, raised and lives in Eagle River, WI
  • Married with four children
  • Hobbies – outdoor activities and coaching kids
  • Northland Pines High School
  • UW Stout
Work Experience
  • Fowler and Hammer – Project Manager
  • Waldmann Construction – Project Manager
  • Cornerstone Custom Builders since 2022


Bruce Stefonek

Phone: 715-362-7888
Email: bruces@cscb.net 

Bruce has been in the building industry since 1993, building premier, signature homes for customers in the surrounding areas.  His professional manner combined with his knowledge of construction allows the customers to feel confident with their building experience.  He has worked closely with the same subcontractors for many years ensuring quality work for all involved.  His dedication to his profession allows the customers to build their dream home.

  • Born in Rhinelander, WI and raised in Sugar Camp, WI
  • Currently resides in Sugar Camp, WI
  • Married to Jan
  • Six sons, two daughters and three grandchildren
  • Hobbies – fishing
  • Sports – golf
  • Three Lakes High School
  • UW Marathon County
  • Northcentral Technical College
  • Degree in Business
Work Experience
  • Sugar Camp Lumber
  • Schuette Lumber Co.
  • Moduline Windows
  • Oneida County Highway Department
  • Owned and operated a business
  • CornerStone Custom Builders since 2011

Cheryl Bluma

Phone: 715-362-7888
Email: cherylb@cscb.net

Cheryl believes there is an art of listening to the customer’s desires and dreams, then creating a home to fit within their budget. Following it from sketches on a placemat to their finished home, watching as their dreams become reality. With almost 30 years of custom home and cabinet design, Cheryl brings a plethora of knowledge and design experience. She had previously designed custom homes for Custom Components, before moving back to the Green Bay area to be closer to family. She is now back as a designer and project coordinator/manager. Growing up in De Pere, spending every summer vacation camping in St. Germain was definitely the best part of her summer. She is very happy to have the opportunity to move back to the area again. Cheryl loves talking with people, listening to them and watching their excitement as they see their dream home take shape. Her goal is to make the home building process enjoyable from design to completion.

  • Born and raised in De Pere
  • Currently resides in Eagle River
  • Married with a daughter, 3 sons and 6 grandchildren
  • Hobbies – painting, sewing, stenciling, wood burning, anything artsy but definitely not cooking!
  • On hot summer days you’ll find her floating in a lake on her paddle board.
  • De Pere High School
  • NWTC, Green Bay – Architetural design, Construction & Cabinet Making, Estimating along with numerous EMT classes.
Work Experience
  • JA Eisch – Design Team Lead
  • Tom’s Cabinets – Sales, Estimating, Design, Shop Engineering
  • Custom Components – Custom Home Designer 1998 – 2005
  • Other Details: Cheryl has 25 years as an EMT, 5 years of real estate sales and worked as an office manager at a recording studio.