Second Story Additions Builder in Greater Lansing

 When your backyard is already at its limit and you need two or three more bedrooms, the only direction left is up. Second story additions are one of the most structurally complex projects in residential construction, and for homeowners in Lansing, East Lansing, Okemos, Haslett, and surrounding Mid-Michigan communities, they are also one of the highest-value investments you can make in your home. As part of our complete home addition services in Lansing, we pop the roof, conduct full load-bearing assessments on your existing foundation, engineer the stairwell and vertical framing, and deliver a home that has doubled in size without surrendering a single square foot of yard. We have been doing this work for over 20 years and we know what Michigan's soil conditions, snow loads, and frost line demand from a structure being asked to carry a whole new level. 

Foundation and Load-Bearing Engineering

A 1958 ranch in Holt and a 1985 ranch in DeWitt have very different structural systems. A two-story colonial in Okemos sits on a different foundation than a split-level in Waverly or a cape cod in East Lansing. Second story additions must be designed around each home's actual conditions across Greater Lansing, not a one-size-fits-all plan dropped onto your lot. 

• Load path analysis: We trace how weight transfers from the new structure down through existing framing and into the foundation to determine exactly where reinforcement is needed.
• Beam and header sizing: Stair openings and new structural spans are engineered with properly sized LVL beams to safely support added loads.

Vertical Structural Integrity

Adding a second story requires careful attention to wind loads, insulation performance, and moisture control across a taller building envelope. These factors become even more important in Michigan’s climate.

• Continuous air barrier detailing: We reinforce transitions between the original home and new addition to prevent air leaks, thermal bridging, and moisture issues.
• Roof system engineering: Roof structures are designed to meet Michigan snow load requirements and are sized specifically for the home’s span, pitch, and layout.

Customized for Your Home

A 1958 1,100-square-foot ranch in Holt and a 1985 1,600-square-foot ranch in DeWitt have very different structural systems, so second story additions must be designed around each home’s actual conditions, not a one-size-fits-all plan.

• Pre-design structural assessment: We evaluate your home’s existing conditions before design begins to ensure the addition is realistic and properly supported.
• Mechanical integration: HVAC, plumbing, and electrical systems are planned during design to avoid conflicts, boxed-in systems, or inefficient routing later in construction.

Why Choose Custom Built for Your Second Story Addition?

• 20+ Years of Structural Experience in Mid-Michigan: A second story addition is one of the most technically demanding projects in residential construction. We've built them across Ingham, Clinton, and Eaton counties and we understand the soil conditions, frost depths, and load-bearing requirements that determine whether your existing foundation can support a second floor before we ever put pencil to paper.
• Engineered to Michigan Winter Standards: Every second story we build is framed and roofed to handle Michigan snow loads and freeze-thaw cycles. We don't build to minimum code. We build to last.
• Design-Build Eliminates the Biggest Risk: The most common failure point on second story additions is the gap between what a designer draws and what a builder can actually execute. Because our design and construction teams work as one, your structural plans, interior layout, and material selections are all coordinated before demolition begins.
• Lifetime Workmanship Guarantee: A second story addition is a permanent commitment to your home. We back ours with a lifetime guarantee on our craftsmanship so your investment is protected long after the crew packs up.