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Bathroom Remodeling

Home Addition in St. Louis with Second Story Expansion

Kirkwood, MO

·

63122

2000 sq/ft

Home Addition in St. Louis with Second Story Expansion

When Aptitude Design and Build first met with these homeowners in Kirkwood, Missouri, the family knew they needed more space but were unsure of the best way to expand their home.

Because of the home’s placement on the lot, there was not enough room to build outward with a traditional addition. After evaluating the property and the family’s long-term needs, Aptitude recommended adding a full second story instead.


This approach allowed the homeowners to significantly expand their living space while remaining in the neighborhood and home they already loved.


Designing a Full Second Story Addition


The second-story addition added:

  • Three additional bedrooms

  • A new full bathroom

  • Expanded living space for the growing family

  • Increased functionality and long-term usability

Before design work began, engineers and architects carefully evaluated the home’s existing structure to determine whether the exterior walls and foundation could safely support the weight of an additional floor.


Once structural approval was complete, Aptitude Design & Build developed a custom second-floor layout that worked within the footprint of the first floor while accounting for existing architectural features such as the chimney and bathroom locations.


Managing Construction While the Family Remained in the Home


Projects involving second-story additions require extensive planning and coordination, especially when homeowners continue living in the house during construction.


One of the most complex phases of the project involved removing portions of the existing roof while protecting the home and minimizing disruption to the family’s daily life.


Because Aptitude Design & Build has significant experience managing large-scale home additions and structural renovations, the team was able to carefully coordinate each stage of construction and make the process as smooth and manageable as possible for the homeowners.


Custom Details That Add Warmth and Character


Several custom features help give the new second story warmth and personality while maintaining a strong connection to the original home.


Some of Aptitude Design & Build’s favorite details in the project include:

  • Exposed brick elements

  • Custom-built window seats

  • Open and airy layout design

  • Improved natural light throughout the upper level

These features help the new addition feel integrated and comfortable rather than disconnected from the rest of the home.


Expanding a Home Without Leaving the Neighborhood


This project is a strong example of how a second-story addition can provide a practical alternative to moving or rebuilding when a family outgrows their existing home.


With the right planning, structural expertise, and design approach, homeowners can significantly expand their living space while preserving the location, character, and foundation of the home they already enjoy.

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Project Details

Location

Size

Type

Zip Code

Completed

Kirkwood, MO

2000 sq/ft

Bathroom

63122

April 1, 2026

The Finished Space

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