
Secondary-Story Additions
Secondary-Story Additions
Gain square footage without using more yard space or moving property lines. At MCS, we specialise in seamless home additions that feel like they were always part of your house. Book a consultation.
Pros & What It Offers
Building upward with a second story or extending outward with a rear addition. Each option has benefits, trade-offs, and different impacts on cost, space, and daily life. To learn more about the process book a consultation.
Home Additions
Whether adding a second storey or extending at the rear, both options involve structural work such as foundation upgrades, roof modifications, and mechanical adjustments. While the investment is higher, the added living space often delivers strong long-term value. Smart planning and value engineering help streamline costs, especially when coordinated with a kitchen renovation.
Home Additions
Whether adding a second storey or extending at the rear, both options involve structural work such as foundation upgrades, roof modifications, and mechanical adjustments. While the investment is higher, the added living space often delivers strong long-term value. Smart planning and value engineering help streamline costs, especially when coordinated with a kitchen renovation.
FAQ
Can I do a partial second‐story addition instead of adding a full second floor?
Yes. Many homeowners choose to build only over part of the home, such as above a garage or one section of the house. A partial addition is less expensive than a full second floor while still creating valuable living space.
What structural checks do I need to consider?
Your home must be evaluated to ensure the existing foundation and framing can carry the weight of a new level. In many cases, additional supports or foundation upgrades are required, and an engineer will confirm what is needed. Magnum coordinates the entire process, from structural assessments to engineering and construction, so everything is handled properly and safely.
Do I need permits or approvals to build up?
Yes. Adding a second story requires city permits and approval of architectural and structural drawings. Local zoning rules, height restrictions, and inspections must all be addressed before work begins. Magnum handles the entire permitting process on your behalf so everything is approved and compliant before construction starts.
Can I live in my home during construction?
It depends on the scale of the project. Smaller or partial additions may allow you to stay in parts of your home with minimal disruption. For full second-story projects that involve removing the roof and major structural work, many homeowners choose to relocate during construction.
How much does it cost to add a second story?
The cost depends on the size of the project, the finishes you choose, and how much structural work is required. In many markets, homeowners report costs ranging from about $150 to $400 or more per square foot for a full second story. Smaller partial additions are typically less but still require significant planning.
Do I need a design package for a second-story addition?
Yes. A design package is essential for any major addition because it includes the architectural drawings, structural details, and finish plans required for permits and construction. It also ensures the new level blends seamlessly with your existing home in both function and style. Magnum provides complete design packages and coordinates with engineers and the city so your project is fully planned before work begins.
Build Up Without Moving Out
Add a full second story to your home for more bedrooms, bathrooms, and breathing room seamlessly integrated and expertly constructed from foundation to finish.




