Karl Sponholtz's Design Portfolio

Karl, a designer from Chicago, Ill., joins the cast of HGTV Design Star season six. Take a peek at the designs that earned him a spot on the show.
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Beadboard Bathroom

The beadboard wainscoting adds texture and durability to this bathroom addition.

Book-Smart Family Room

Built-in bookcases frame sunny French doors in this family room addition.

Custom Bathroom Cabinetry

Sponholtz designed a custom skylight to let light into this his-and-hers bathroom addition. The center glass cabinet stretches to the ceiling for ample linen closet space.

Federal-Style Backyard Remodel

To open up this federal-style home to the backyard, Sponholtz added large windows and French doors. White railings on the balcony overlook the new brick patio.

Georgian Kitchen Addition

Sponholtz designed this kitchen addition, including the custom cabinetry and paneling. "I wanted to give the traditional Georgian architecture a modern aesthetic — dreamy!," he says.

Sunny Traditional Kitchen

A cheerful, light sage green color and lots of natural light make this traditional galley kitchen shine.

Family-Favorite Sun Porch

This new sun porch quickly became the favorite room in the house, says Sponholtz. "I really wanted to let the outside in, and with heated bluestone floors, it can be enjoyed year-round!," he says.

Custom Ironwork

Custom iron railings lead you up to a new sun porch addition. Sponholtz painted the exterior trim brown to allow the house to better harmonize with the surrounding landscape.

Traditional Meets Modern Kitchen

For the kitchen renovation of this historic Adams-style home, Sponholtz tried to stay true to the history while providing all the convenience of a modern chef's kitchen.

Spanish-Style Outdoor Addition

Custom-made French doors lead you from this Spanish eclectic mansion onto bluestone terrace.

Rehabbed Tudor Home

Sponholtz does both interior and exterior work; for this Tudor-style home, he rehabbed the front right down to the custom balustrade and quoins.

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