Custom Home Building in Greater Lansing and Mid-Michigan

With over 20 years of experience, we provide the highest level of quality and service in drafting/design, building, decks, additions, remodels and handyman services
Additions and remodels in Greater Lansing area, as seen here in a newly remodeled kitchen

Additions/Remodels

Cornerstone Custom Homes and our subcontractors have the ability to take your dream ideas and make them a reality. From start (plans) to finish (cleaning), Brian and his team will be there. We can create your spa-like master bath, HGTV-like kitchen, or finished basement space.

  • Additions/Remodels
    • Cornerstone Custom Homes TimberTech Silver Pro deck contractor

    Decks

    We are a TimberTech Silver Pro deck builder that can convert your old/tired treated deck into a new fresh outdoor space. New composite or PVC decking with vinyl, aluminum or composite railing is both beautiful and maintenance-free.

  • Decks
    • Custom new home building in DeWitt, MI

    Home Building

    Our team of subcontractors are some of the best in the business. Quality craftsmanship, exceptional service, and years of construction experience ensure a phenomenal process from start to finish. All our homes are completely custom … they are built for you.

  • Home Building
    • Handyman services in Lansing area

    Handyman Services

    We’re happy to fill the large need for quality handyman services in DeWitt and the surrounding Greater Lansing area … with a deep knowledge in construction and the desire to fix things RIGHT! And if we can’t fix it, then we know someone who can.

  • Handyman Services
    • Drafting and design services in Dewitt, MI

    Drafting/Design

    With a degree in Architecture Technology and having drafted hundreds of homes over the last 19 years, Brian has the attention to detail and keen sense of scale to design your project.

  • Drafting/Design

      • Hear from Cornerstone Clients

      Don't just take our word for it! See some of our 5-star Google reviews.
      Tom Smith

      DeWitt, MI

      Brian was great to work with as we remodeled our kitchen ... He is very professional and the quality of his work is outstanding. When he said he was going to be on site at a specific time, he was here ten minutes early. He texts, emails, and calls within minutes of any questions ... The subcontractors that Brian uses are equally good: polite, on time and they left the site clean, clearly an extension of Brian's business philosophy. Most importantly, Brian treated our job as if it were his own home. We would absolutely use Cornerstone again for any construction project.
      Erica Weiss Holman

      St. Johns, MI

      Our company searched for a project manager and Cornerstone Custom Homes not only showed up on time for the initial meeting but came with ideas and suggestions. As plans were discussed, a design board was created and time frames laid out. We asked for estimates with different features or combinations and these were provided quickly and with suggestions for different materials that might work better or be priced better ... We had a renovation to the studs with bathroom plumbing changed out. The entire team was professional, timely, and took pride in the craftsmanship.
      Frank Green

      East Lansing, MI

      Excellent work ... Brian helped us design our extensive remodeling project. Then, he chose, and coordinated, an expert crew of flooring specialists, finish carpenters, painters and other craftsmen. Before work started, he presented a detailed estimate and explained the expected time frame—he was accurate on all counts. Throughout, he was always available to answer our questions, and, daily, he updated us on the progress and upcoming stages. Cornerstone Custom Homes did a fantastic job; we’re delighted and we recommend the company without reservation.
      Breanna Hull

      DeWitt, MI

      10/10 recommend for your project! Brian and his team had our entire basement finished under budget and in a short time frame with a beautiful result! They were honest, kind, respectful in our home, and became like one of the family. Each part of the team was on time, efficient and could be trusted. We will definitely be trusting them with all our future projects!
      Nichole Kwiatkowski

      St. Johns, MI

      We were extremely pleased with the professional manner and quality craftsmanship while working with Cornerstone Custom Homes. We finished our daylight basement. Brian was easy to get ahold of ... He worked around our schedule and kept us in the loop with what to expect and when. We appreciated his insights and opinions (thanks for telling us to buy a bigger bathroom mirror!) and we found him to be very fair when it came to pricing. We would recommend Cornerstone Custom Homes and plan to use them in the future the next time we upgrade our home.

      See our Work

      The proof is in the portfolio. View details and photos of custom building projects we've completed for our satisfied clients in Mid-Michigan, from custom home construction in DeWitt to bathroom remodels in East Lansing to new composite decks in St. Johns.
      View Cornerstone Portfolio

      Meet the Builder

      Brian Theis has been in the custom home building industry since 2002. He has a degree from Ferris State University in Architecture Technology and is a fully licensed and insured builder.
      Cornerstone Custom Homes was founded with a simple concept in mind: building should be fun. Whether it's a new home, addition, or remodel, Brian strives to build relationships with his clients to make the experience one they will enjoy.
      Born and raised in Portland, MI, Brian now lives in DeWitt with his wife, Erin. They adopted their son, Joshua, from the Philippines in February 2022. He is an avid bowhunter. His other interests include wine making, college sports, and traveling.

      Let's get started!

      Get in touch with Cornerstone Custom Homes today using our handy form below. We can't wait to meet you.