32550 Dixon St. Dowagiac, MI 49047

Southwestern Michigan

Building Custom Home Additions

Custom additions refer to unique and personalized extensions or expansions made to an existing home to meet the specific needs and preferences of the homeowner. These additions are custom-designed and built, tailored to integrate seamlessly with the original structure while providing additional living space or enhancing the functionality of the house.

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Different kind of lifestyle

Welcome to Your Dream Home

At Gatz Construction, we take great pride in bringing your dream home to life, precisely tailored to your ideal specifications. 

Our process begins with a collaborative approach, where we sit down with you to understand your vision, lifestyle, and preferences. From there, our team of skilled architects and designers work closely with you to translate your ideas into detailed plans, ensuring that every aspect of your dream home is meticulously crafted to perfection. We offer an array of design options, from architectural styles to interior finishes, allowing you to make personalized choices that reflect your unique taste.

During the custom home additions process, our team of skilled builders and craftsmen remains dedicated to the minutest of details. Our commitment to employing premium materials and the latest construction methodologies ensures that your new addition seamlessly blends beauty with enduring strength. Open and consistent communication serves as a cornerstone of our approach, ensuring your active participation at every stage. Entrusting us with your custom home addition means that every facet is executed with meticulous precision, unwavering dedication, and an unyielding commitment to exceeding your visions. Our relentless pursuit of excellence underscores each endeavor, resulting in an addition that not only expands your living space but also enhances the overall aesthetics of your residence. Your contentment remains our ultimate goal, and it’s our privilege to contribute to a space that resonates deeply with you and your cherished family.

Quality Life for You and Your Family

Examples of
Custom Home Additions

Custom home building is an exciting and dynamic process that allows homeowners to design and construct their dream homes from the ground up. Unlike buying pre-existing homes, custom home building offers unparalleled personalization, enabling individuals to tailor every aspect of their living space to suit their unique lifestyle, preferences, and needs. From selecting the perfect location and architectural style to choosing materials, floor plans, and interior finishes, the aspects of custom home building provide endless opportunities for creativity and expression. With careful planning, attention to detail, and the guidance of experienced professionals, the journey of custom home building promises to be a rewarding and fulfilling experience, culminating in a one-of-a-kind sanctuary that truly feels like home.

Sunroom or Four-Seasons Room

An enclosed room with large windows, designed to let in natural light and offer a space for relaxation and enjoyment of outdoor views throughout the year.

Home Office

A dedicated office space designed to accommodate the homeowner's work needs, often equipped with appropriate furnishings, storage, and technology.

Guest Suite

A separate living area, complete with a bedroom, bathroom, and sometimes a small kitchenette, intended to provide comfort and privacy for guests or extended family members.

In-Law Suite

Similar to a guest suite, an in-law suite is a self-contained living area designed to accommodate elderly parents or family members, often with features to enhance accessibility.

Media Room or Home Theater

A custom-designed entertainment space equipped with high-quality audiovisual equipment, comfortable seating, and optimal acoustics for a cinematic experience.

Gym or Exercise Room

A dedicated area for fitness activities, equipped with exercise machines, weights, and other workout equipment.

Conservatory or Greenhouse

A specialized addition that allows homeowners to cultivate plants and enjoy gardening activities year-round.


An entryway addition designed to serve as a transition space between the outdoors and the indoors, typically equipped with storage for shoes, coats, and other outdoor gear.

Expanded Kitchen

Increasing the size of the kitchen to create a more spacious and functional cooking and dining area.

Master Suite

A luxurious, customized bedroom area, often including an en-suite bathroom, walk-in closets, and additional amenities for comfort and relaxation.

Quality Life for You and Your Family

Have Any Questions?

A custom home addition involves expanding an existing home by adding new rooms or living spaces to meet the homeowner’s specific needs and preferences.

Custom home additions allow you to create more space without moving, accommodate a growing family, add functional areas like home offices or guest suites, and increase property value.

Home additions can include extra bedrooms, bathrooms, family rooms, sunrooms, second-story additions, in-law suites, and more.

Our team will assess your property, considering factors like zoning regulations, structural integrity, available space, and your home’s foundation.

Yes, we strive to create a seamless transition between the existing home and the addition, matching architectural styles, materials, and finishes.

The timeframe depends on the size and complexity of the addition. It can range from a few months to a year or more.

Yes, permits are typically required for home additions to ensure compliance with local building codes and safety regulations.

Our team takes measures to minimize disruptions and ensure your comfort. We’ll discuss the construction schedule and any necessary accommodations.

Absolutely! We collaborate closely with you to design an addition that aligns with your needs, preferences, and lifestyle.

Our experts carefully plan and coordinate all systems to ensure they seamlessly integrate with the existing infrastructure.

Yes, we offer interior design services to help you choose finishes, fixtures, and decor that complement the new addition’s aesthetics.

Contact us to schedule a consultation. We’ll discuss your goals, assess your home, and provide recommendations, an estimated timeline, and budget.

Build Local

Michigan Natives

Gatz Construction is based out of Dowagiac Michigan. We are not a out-of-town builder with no understanding of the area we build in. We take pride in being from Michigan and look to provide quality homes.

A Custom Home Builder You Can Trust

As a custom home builder with over 35 years of experience, we have built a solid reputation for delivering exceptional craftsmanship and personalized services to our clients. Our longevity in the industry speaks volumes about our commitment to quality and customer satisfaction. Throughout the years, we have honed our skills, expertise, and attention to detail, ensuring that every custom home we create is a true reflection of our clients’ dreams and aspirations. Our team of dedicated professionals takes the time to listen to our clients’ needs, collaborating closely with them throughout the entire process, from design conceptualization to final construction. We take immense pride in our ability to bring visions to life, creating bespoke homes that stand the test of time. When you choose us as your custom home builder, you can trust that your project will be handled with care, precision, and a passion for excellence, resulting in a home that exceeds your expectations and becomes a cherished space for generations to come.

What are you waiting for?

Custom additions require careful planning and consideration of the existing home’s architecture and structural requirements. Homeowners typically work with architects or designers to develop plans that integrate well with the original structure and blend harmoniously with the overall aesthetics of the home. Professional builders and contractors then execute the construction to bring the custom addition to life.