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Image by Samuel Cruz

Meet the Crew


Derek Earnst, Owner & Professional Contractor

Derek has 12+ years of experience in residential and commercial plumbing and 10+ years in residential construction. Derek started as a plumbing apprentice after completing high school, where he grew in the plumbing field, worked for a small local construction company, and then Spring of 2019, decided to open his own business! Derek not only uses his skills and expertise in all areas of construction on site, but he also is in constant communication with our customers on design, selection of materials, and ensuring every detail is executed to completion with precision and accuracy! He loves talking through projects alongside his wife, Allison and helping all of their clients imagine all the possibilities for their project. Derek is Schluter certified and enjoys seeing the projects through from beginning design to final completion.

Derek enjoys spending time with his family, watching football, going out on dinner dates with his wife, and spending time outside.


Allison Earnst, Co-Owner & Business Manager

Allison earned a Bachelor of Communication Sciences degree with Summa Cum Laude Honors from West Virginia University. She has worked for their local government in both community development and administration for 5 years before deciding to work full time alongside her husband, Derek with Cornerstone Remodeling and growing their family. She also serves on South Middleton Township’s Zoning Hearing Board.

She coordinates all business operations, oversees finances, and makes sure everything at Cornerstone Remodeling runs smoothly. Allison also assists clients with designing their projects. Allison and Derek are a true "dream team" with his professional construction knowledge and her eye for design and experience in the remodeling industry.  Allison truly loves seeing every detail come together and bringing all of your home dreams to life!

Allison enjoys spending quality time with her family, hosting gatherings with friends, and when she's not working and playing with her kids, you can find her cooking something yummy in the kitchen!


Benjamin Reisinger, Project Manager & Professional Contractor

Benjamin has 8+ years of experience years in residential construction and comes from a long line of carpenters dating back to his great grandfather, Ernest Reisinger, who founded Reisinger Brothers. He started in 2013 doing side jobs on residential projects for family and friends while attending college. He graduated with an Associate’s Degree in Forestry. His passion for construction took off when he began his Carpenters Apprenticeship in 2015 which led him to start work with Cornerstone. Benjamin is Schluter certified. He specializes in tile installation (aka Cornerstone's "tile artist"), drywall, electrical, and framing. He is creative in problem-solving and pays close attention to detail. He continues to research, seek out knowledge, and perfect his skills in order to make your dream house a reality. Benjamin works closely with Derek by planning, developing, creating, and offering solutions to best serve the needs of the customers.

Benjamin resides in Boiling Springs with his wife, Brandee, and his three children Laurel, Azalea, and Waylon. He loves spending time with his family and enjoys the outdoors. He loves woodworking, gardening, hunting, and fishing.


Loren Jones, Project Manager & Professional Contractor 

Loren has been in the construction industry for 12+ years. He started with his experience installing fences and pools to building steel free span horse areas. The last 8 years has been focused on residential remodeling. Loren started learning the trades from an early age, going to work with his dad.

He has experience in leading teams on job sites, managing projects, framing, drywall, roofing, siding, and trim work.

Loren loves learning new things and is currently learning more about electrical and plumbing to further his skillset on projects.

Loren is a great problem solver, and we love how well he communicates with all of our clients. He also works close with Derek in project planning and making sure our crew delivers the highest quality product from start to finish.


Loren loves spending time with his wife Chelsea and two boys, Lucas and Jackson. He is a faithful servant to his church and enjoys running, hunting, and fishing.


Josiah Reisinger, Contractor

Josiah has been working for Cornerstone and apprenticing under his brother, Ben Reisinger. Josiah has an associate's degree in Computer Networking and attended college at HACC. He worked for his family business when he was in high school and then later worked in landscaping and snow removal during college. He always has a great work ethic and a positive attitude. Since graduating, he has found new passions in learning the trades and skills in Carpentry.  He has been a great asset to the company and will continue to perfect his skills through working with his big brother, Ben, and boss, Derek. Josiah enjoys fly fishing and spending time with his nieces and nephew in his downtime. 

Allison Stine

Allison Stine, Bookkeeper & Finance Administrator

Allison earned a Bachelor of Science in Life Science from Penn State University and a Masters of Science in Community Counseling from Shippensburg University, after which time she had the privilege of staying home to raise her two children. During 9 of those years she co-owned a small, local construction company, where she was primarily responsible for coordinating administrative responsibilities. Currently, Allison is beginning her 5th year as the Administrative Assistant at a local private Christian school but continues to stay connected to the residential construction industry, assisting the Earnsts through her previous experience in the field. She assists part-time with bookkeeping, managing finances, invoicing, payroll and provides other administrative support as needed.

Allison enjoys hanging out with her teenage son, playing with her chocolate labradoodle, Gus, and loves any time she can get together with family and friends!

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