A second-story addition is one of the most impactful ways to expand your home without taking up valuable yard space. At Addition Los Angeles, we specialize in building strong, safe, and beautifully integrated second-floor expansions that significantly increase your home’s square footage, comfort, and long-term value.
Whether you're adding bedrooms, a new primary suite, bathrooms, or a full upstairs living area, our experts handle every detail—from engineering and structural reinforcement to interior finishing and seamless architectural matching.
Why choose our second-story addition services?
Elevating your home requires precision, planning, and structural expertise. Our team ensures your second level is safe, functional, and perfectly aligned with your existing home.
Engineering-Driven Craftsmanship
Our additions are structurally reinforced, earthquake-compliant, and designed to last decades with maximum stability.
Clear Communication
We provide consistent updates, explain all engineering steps, and ensure you always know what’s happening on-site.
Custom Layouts
Bedrooms, lofts, bathrooms, living spaces—your new second level is tailored to your lifestyle and home design.
Full Service Management
We handle structural analysis, permitting, demolition, framing, utilities, roofing, finishing, and inspections.
What we offer
Our second-story addition services cover everything required to safely expand upward—from foundation reinforcement and structural framing to complete interior finishing. We ensure your new level feels like a natural extension of your home.
- New upstairs bedrooms, bathrooms, and primary suites
- Second-floor living rooms, lofts, and entertainment spaces
- Structural reinforcement, roofing, and seismic upgrades
- Framing, insulation, drywall, electrical, plumbing, and finish work
Before Construction
We evaluate foundation strength, structural requirements, and design layout to ensure safe vertical expansion.
After Completion
Your new second floor is finished with high-quality materials, seamless transitions, beautiful lighting, and modern comfort.
Service process
Expanding upward requires coordination and structural expertise. Our process ensures safety, efficiency, and excellent craftsmanship at every step.
Architectural Design & Engineering
We design your new second floor with structural safety, layout efficiency, and aesthetics in mind.
Timeline & Construction Phasing
We outline clear vertical construction phases, including reinforcement, framing, and finishing.
Build Execution
Our team completes all major work including roofing, utilities, insulation, drywall, flooring, and final detailing.
Everything You Need to Know
Most second-story additions take 8–16 weeks, depending on structural requirements, size, inspections, and city permitting timelines.
Yes—after engineering review and reinforcement. We assess foundation strength, wall load capacity, and all structural elements before building.
Yes. Vertical additions require structural, architectural, electrical, plumbing, roofing, and safety permits. We handle all documentation for you.
In many cases, yes. Some phases may require relocation depending on roof removal, structural reinforcement, and safety considerations.
Yes. Second-story additions offer one of the highest returns on investment, significantly boosting square footage and resale value.