3-Season Sunroom Contractors in Greater Lansing, MI

If you've ever had to pack up your patio furniture because a storm rolled in, or given up on sitting outside because the pollen was unbearable, a 3-season sunroom is what you've been looking for. It's not a full addition and it doesn't need to be. You want to enjoy your outdoor space from April through October without the yellow dust, the wind, and the rain cutting your time short. That's exactly what a 3-season room gives you.

At Custom Built, we design and build 3-season sunrooms using vinyl window systems, single-pane tempered glass, and screened openings that create a weather-protected sanctuary between your home and the outdoors. You get the light, the views, and the fresh air without the elements that make your current space unusable half the time. It's a significant upgrade from a basic deck without the cost of a full four-season addition. As Greater Lansing's trusted sunroom contractor, we handle every phase in-house from design through final walkthrough so your project stays on track and on budget.

Weather Protection Systems Designed for Michigan

Material selection matters in a spring-to-fall space because the enclosure needs to perform through humidity swings, storms, and changing temperatures while still feeling open and comfortable.

• Single-Pane Tempered Glass: Tempered glass provides durability, visibility, and protection while maintaining the light-filled feel homeowners want in a seasonal sunroom.
• Vinyl Window Systems: Systems like Eze-Breeze offer flexibility, ventilation control, and protection from pollen and weather, making them a popular solution for enclosed porch designs.

Built for Long-Term Performance

A successful 3-season room is about more than windows; it’s about building an enclosure that performs as part of your home.

• Integrated Floor Drainage: Managing water in the floor system is critical, especially in Michigan’s wet spring and summer conditions. We plan drainage into the structure from the beginning to support long-term durability.
• Non-Conditioned Space Design: Because these are intentionally non-conditioned spaces, we design around seasonal comfort and airflow rather than systems meant for conditioned living areas, keeping the project aligned with how homeowners use the space.

Crafted for Your Home and Lifestyle

No two 3-season rooms should feel like an afterthought. We design each space around the home it’s attached to and how you want to use it.

• Designed Around Your Home’s Architecture: Rooflines, openings, and structural tie-ins are designed so the enclosure feels integrated with the existing home rather than added on.
• Built Around How You Live: Whether you envision morning coffee, lake-style lounging, or protected entertaining space, the layout can be tailored to support how you want to enjoy your spring-to-fall retreat.

Why Choose Custom Built for Your 3-Season Sunoom?

• 20+ Years of Local Roots:  We’ve spent decades designing and building outdoor living spaces in the Greater Lansing area, with experience creating 3-season rooms that perform well through Michigan’s changing spring-to-fall conditions.
• Lifetime Workmanship Guarantee: A 3-season room should feel like a lasting extension of your home, not a temporary enclosure. We stand behind the structural integrity of our work for the life of the build.
• We Handle All Permitting: From enclosed porch additions to structural approvals, we manage the permitting process for your 3-season room from start to finish, so you don’t have to navigate township or city requirements yourself.
• Professional Design-Build Process: From early layout concepts and enclosure selections to construction and final inspection, our design-build process keeps your 3-season room project coordinated, efficient, and centered around how you want to use the space.