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Reliability, Quality, Accuracy

Looking for a reliable Remodeling Contractor in The greater lansing area? Look no further. J Squared Builders LLC is your one-stop-shop for remodeling or repairing services. We specialize in all aspects of home renovations including 3D designs. From flooring, bathroom renovations, kitchen remodels, additions, to new construction. We’ve got you covered. Have a project you want completed? Take a look at our portfolio and book a consultation meeting today.

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Bathrooms might seem like a complicated job, but no matter what project you have in mind, trust our team to help you bring your vision to life. We’ll take care of every aspect of the job, from design to completion, with your budget in mind. Get in touch to learn more.



Kitchen Remodels are the best way to really make your house feel like home. J Squared Builders would be happy to design your new kitchen. We can help make, what can be an overwhelming process, enjoyable. Would you like to learn more about what we can do for you? Call us today to get a quote.



Whether you want to add on a four seasons room or that extra bedroom for your growing family, we are ready to make planning easier. With over 20+ years in construction there isn’t a project we can’t do! Call us today to set up a consultation. 



When you request a service from J Squared Builders LLC, rest assured that our team will go above and beyond to meet expectations. We’ve done many outdoor treated and composite decks. Feel free to contact us for a consultation. We would love to help you with the plans for your new deck!

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To request a consultation and quote for any of our services we offer, please send an email with a brief description of your needs or give us a call at 517-980-1173. We'll get back to you promptly with all the information you need and to schedule a time for your consultation. We look forward to the opportunity to work with you on your home renovation. 

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Home: Submit Your Testimonial

Linda Fulk

Jantzen and Ashley just finished our deck, the small front entry decking and shiplap above our fireplace. They did an amazing job and were great to work with. They work hard, are very meticulous and go above and beyond to make sure their clients are happy with the finished product. We plan to have them complete future jobs for us and very highly recommend them to our friends. We are also happy to call them new friends.


Reinhard & Renee'

J Squared made our kitchen renovation dream come true, from beginning to end. The process included moving and removing walls, and the project completely reinvented the functionality of our living space. They took our ideas to all new heights, while working within our budget. From their creative vision and design, attention to every imagineable detail, and expert craftsmanship, J Squared does not disappoint! They are an absolute pleasure to work with. We have, 100%, confidently, referred them to family and friends, who have been equally impressed. We look forward to having them return for any and all future upgrades to our home!


Denny & Diane 

J squared builders did an outstanding job remodeling our kitchen. They create unique design with function. Very fair; excellent quality of work; creative and meticulous.. We would highly recommend them without reservation.


Pam Robison

Jantzen Cowan and his team did a phenomenal job in my home renovation. His dedication to detail and perfection made my home look beautiful. Jantzen was always kind and patient with my decisions and consistently went the extra mile to accommodate. You won’t find a better contractor or nicer person.


Justin Dillon

I've had two major projects done with this company and I'd recommend them to anyone. Jantzen and Ashley are exceptionally gifted in their craft. Their attention to detail and professionalism is top notch. Working with them is like having family in your home. They are both very genuine people who i love working with. On both occasions their work has exceeded my expectations. I couldn't be happier to give them my business. You won't regret hiring them.


Randa Hughes

Wonderful job on my renovated bathroom.!! It is so beautiful it makes me want the whole house refinished. Ashley and Jantzen are so professional and they add there own set of beauty to every project. You won't be sorry you hired them. Thank you again Ashley and Jantzen


Dave McCardel & Kate Holan

We have had Jantzen and Ashley complete two projects for us. First was a two story addition including a full kitchen remodel. Then they designed and built our huge rear deck. Their attention to detail was excellent. But what set them apart was the design creativity, and the ability to adapt on the fly as things change. And they always do! Their constant positive attitude everyday made the process of construction bearable and at times fun. I would recommend them highly, and we have!


Mike & Anne Voorheis

Jantzen and Ashley did an outstanding job on our front porch. They replaced current wood porch with Trex and it looks amazing! Their price was very competitive and they are wonderful to work with. We could not be happier.


Jeremiah Mankoph

J Squared Builders are far and away the best team I have ever worked with! Their attention to detail and amazing design ideas made my remodel, actually, fun! I now have my dream bar...


Deb Langdon

Another company did work resulting in damage. Repairs were going to be costly so the owner of the company asked Jantzen for a favor and do the job. Well, I benefited from that favor. Jantzen and Ashley went beyond the required repairs and I could not be happier with the results. Many thanks to them for making someone else's mistake more than right, but an excellent experience. You have my highest recommendation.


Bill & Danita Brandt

Jantzen and Ashley did a fantastic job on our screened porch. After listening to us and making suggestions, they built exactly what we wanted. They went above and beyond, working out in the cold during November and December, even on Thanksgiving Day! Because they spent so much time searching for the perfect trim pieces, door, screening, etc., the final product is so much more than we envisioned. They are such perfectionists, giving attention to every detail. They were very professional and at the same time, fun to have around. We would definitely use them again and highly recommend them for any home remodel project.


Erin Hagen

We loved the work and professionalism Jantzen and Ashley brought to the job. Fabulous work! Highly recommend!


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