Patio Enclosure Contractors in Greater Lansing, MI

You already have the floor. Most homeowners who reach out to us about patio enclosures say the same thing. They have a perfectly good concrete slab or deck that sits empty from May through October because it's too hot, too wet, or too buggy to actually use. They're not looking to build something from scratch. They just need the walls and roof to make it a real room.

At Custom Built, we specialize in converting existing patios and decks into fully enclosed rooms that feel like a natural extension of your home. We work with your existing footprint, evaluating slab thickness, structural integrity, and roofline attachment points before a single wall goes up. As part of our broader sunroom contractor services in Greater Lansing, we engineer each enclosure around what's already there so you're not paying for unnecessary structural work.

The result is a space that goes from wasted square footage to one of the most-used rooms in your home. Whether your slab is off the back of the house or your deck wraps a corner, our design-build team shapes the enclosure around your existing footprint and how you want to live in it.

Energy Performance and Weather Protected

A patio enclosure means building intelligently on what already exists.

• Slab and Deck Evaluation:  We assess your existing concrete slab or deck structure to confirm it can support an enclosed room.
• Moisture Barrier Integration: Michigan’s freeze-thaw cycles and humidity require careful moisture control. We incorporate vapor barriers and detailing strategies to protect the structure over time.

Engineering the Conversion Correctly

Turning an outdoor space into an enclosed room requires precise structural and architectural integration.

• Knee Wall Construction Systems: We build knee-wall assemblies that properly transition from existing slab or deck to framed enclosure walls.
• Roofline Attachment and Load Planning: We tie the new roof system directly into your existing home structure, ensuring proper load transfer and a seamless visual transition between old and new construction.

Built for Michigan Conditions

A patio enclosure in Greater Lansing must be designed for real weather, not just ideal conditions.

• Custom Layout Based on Existing Footprint: We shape the enclosure around your slab or deck to maximize usable space without unnecessary structural changes.
• Seamless Home Integration:  We match rooflines, exterior materials, and transitions so the enclosure feels like part of the original home, not an added structure.

Why Choose Custom Built for Your Patio Enclosure?

• 20+ Years of Local Roots: We’ve completed hundreds of enclosed porch and conversion projects throughout the Greater Lansing area.
• Lifetime Workmanship Guarantee: We stand behind the structural integrity of every patio enclosure for the life of the build.
• We Handle All Permitting: From structural reviews to local inspections, we manage the entire permitting process for you.
• Professional Design-Build Process: One local team handles design, engineering, and construction, keeping your patio enclosure conversion streamlined from start to finish.