Sunroom Addition Contractor in Greater Lansing, MI
Bring the outdoors in. Custom Built designs and builds sunroom additions for Greater Lansing homeowners who want year-round comfort and views that never get old.
You have likely spent enough summers watching your backyard through a window, or lost too many evenings to mosquitoes and Michigan weather. Whether you want a bright space to enjoy spring mornings or a fully insulated room you can use through a Michigan winter, installing a sunroom addition is one of the most rewarding investments you can make in your home. We are the #1 home remodeling company in Greater Lansing that designs seasonal rooms that feel like they were always part of your home.
We specialize in three-season sunrooms for homeowners who want a comfortable, protected space from spring through fall, four season sunrooms for those who want a fully climate-controlled room they can use year-round, patio enclosures for homeowners ready to transform an existing outdoor space into a sheltered living area, and screen rooms and screen-in porches for families who want fresh air without the bugs. We handle all engineering, permitting, and construction under one roof so nothing falls through the cracks between the design phase and the build.
How We Engineer For Sun, Snow, and Everything In Between In Greater Lansing
Building for Lansing means engineering for snow, freeze-thaw cycles, and a humidity range that swings hard between January and July. A sunroom built to South Carolina standards won’t last here.
Site Orientation for Sun Exposure:
We evaluate your lot’s solar orientation before drawing a single line: South-facing captures passive heat in winter, east-facing works as a morning retreat, and each orientation needs a different shading and ventilation strategy. We design around your actual sun path, not a generic template.
Snow Load Engineering:
Glass roof systems in Ingham County have to hold 30 PSF without deflection or seal failure. We specify structural glazing rated for Michigan’s climate zone so a heavy lake-effect dump doesn’t become a structural problem.
Thermal Glass and Condensation Management:
Single-pane glass in a Michigan winter means condensation, which means deteriorating framing and finishes. We use thermally broken framing systems and low-e insulated glass units that keep the interior dry and the heat bills honest.
Recent Success Stories
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“Dianna at Custom Built is the best! She listened to our sunroom remodel ideas and turned our vision into reality. She worked within our budget and was always very responsive. Would definitely recommend her and the whole Custom Built team! Very professional team!” - Tyler & Elizabeth Buchinger
“Tom and I cannot begin to say how happy we are with our experience with Custom Built. The whole team was amazing. Custom Built transformed our old rickety screened in porch into a beautiful, peaceful “ZEN” room. This room is everything we dreamed it could be. We would highly recommend Custom Built.” - Dawn Adams
“Custom Built designed and constructed a lovely screened in porch for our recently purchased home. The company was a pleasure to work with from our first contact. They are a systematic, well-organized, and detail oriented business. Every step of the way, we knew the status of our project, what we could expect, and when it would be completed. The finished project is beautiful and functional. We couldn't be happier with this experience and intend to use Custom Built for any future remodeling we decide to do.” - Diane Henningfeld
Why Greater Lansing Homeowners Trust Custom Built for Their Sunrooms
- 20+ Years of Local Roots: Based in Okemos, we have spent over two decades building across Ingham, Clinton, and Eaton counties. We know the frost depths, solar orientation challenges, and township-by-township zoning differences that affect every sunroom project in this market.
- Lifetime Workmanship Guarantee: A sunroom is a permanent structural addition to your home. We stand behind our work for the life of the build. If something we built fails, we fix it, full stop.
- We Handle All Permitting: Glass-heavy additions can trigger extra zoning review in some Lansing-area townships. We research your parcel, manage every permit filing, and coordinate all inspections so you never have to set foot in a building department.
- Professional Design-Build Process: Solar orientation, structural engineering, glass specification, and finish work all coordinated by one team under one contract, from the first 3D rendering to the final inspection. No gaps between what gets designed and what gets built.
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Our Proven Design-Build Process
DREAM
Your dedicated Project Development Advisor will sit down with you to understand how you want to use the space, which direction your yard faces, and what's actually possible on your property before anything else happens.
DESIGN
We evaluate your site's solar orientation, assess your home's structural profile, and build your sunroom in 3D. What you see in the rendering is what gets built, down to the glass specification and trim detail.
BUILD
Our production team handles foundation, framing, glazing, and mechanical installation with one dedicated point of contact keeping you informed throughout. Glass-heavy builds require precision sequencing and we manage it so you never have to wonder what's happening or who to call.
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CONTINUE
The first winter morning you sit in your sunroom with coffee while snow falls outside is the moment this build pays for itself. Every sunroom comes with a Lifetime Workmanship Warranty and a local team that remains accountable to you long after the final walkthrough.
Start Your Sunroom Project with Greater Lansing’s Trusted Design-Build Contractor
While our office is located in Okemos, MI, Custom Built has been the premier home renovation contractor for Greater Lansing, East Lansing, and Mid Michigan for over 20 years. If you’re ready to stop watching your yard from the wrong side of a window, click below and let’s get started.
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