Second-Story Additions

Full-Scale Home Extensions

Second-Story Additions with Structural Reinforcement

Adding a second story is structurally distinct from every other addition type. You're not just building up — you're loading down onto walls and a foundation that weren't engineered to carry a second floor. The structural assessment comes first: existing foundation bearing capacity, first-floor wall framing adequacy, and beam sizing at all load transfer points. Michigan's design snow load of 40 lb/sf factors into every member calculation.

Construction begins with weather protection over the house before we remove the existing roof. We reinforce first-floor framing where needed, install beams and posts at structural transfer points, then frame the new floor system, second-floor walls, and roof. Everything is framed, sheathed, and dried in before interior work begins. A second-story addition typically adds a staircase, bedrooms, bathrooms, and connecting hallway.

The permit and inspection sequence for a second-story addition is more involved than a ground-floor addition. Plan review requires stamped structural drawings, energy code compliance documentation, and separate permits for electrical, HVAC, and plumbing work. We manage all of it. Southeast Michigan homeowners on smaller lots choose second-story additions because it's the most space-efficient way to double the living area without reducing the yard or approaching setback lines.