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Home Additions:
Create Your Dream Space

Expand your living space and enhance your home’s value with our custom home additions. At S.J. Janis Company, we seamlessly integrate new spaces into your existing structure, ensuring that every addition is a perfect blend of functionality and aesthetics.

Charming house with multiple gables, surrounded by autumn trees. Spacious patio features seating and landscaped garden. Peaceful, rural setting under a cloudy sky.
Aerial view of modern house with large windows and skylights, surrounded by trees and lawn in a suburban neighborhood.
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Adding an addition or extension to your home comes with substantial benefits:

  • Avoid the stress and cost of moving.
  • Accommodate a growing family in the neighborhood you love.
  • Improve a distressed property that has “good bones.”
  • Upgrade the entire house at once for a cohesive look.
  • Add a new room or use unfinished spaces to increase your home’s square footage and property value.
  • Create a more accessible space that allows you to age in place. This may include the addition of an elevator. ​
  • Enjoy all four seasons with a sunroom addition or conservatory.
Modern house with large windows is illuminated from within, surrounded by lawn and trees, under a clear evening sky.
Gallery of Projects

Explore our Design Portfolio for More Home Addition Inspiration.

View Our Portfolio
Brookfield Kitchen Addition
Richfield Sunroom Addition
2nd Floor Home Addition & Detached Garage Office Remodel
Cedarburg 2nd Floor Addition
Mukwonago Spa Addition
Whitefish Bay – 2 Story Addition
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