Yes. GM Home Improvements is a fully licensed and insured deck contractor in Southeastern Wisconsin, ensuring code-compliant construction and safe, professional installation.

Yes, GM Home Improvements offers composite deck repair, resurfacing, and maintenance services, including board replacement, railing upgrades, structural reinforcement, and surface cleaning. We’re happy to evaluate whether repair or replacement is the best long-term option.

Yes. Every project starts with a personalized design consultation to understand your space, lifestyle, and goals. We create custom layouts with features such as multi-level platforms, under-deck drainage, built-in seating, lighting, aluminum railings, and Cabana X pergola systems. Our team will help guide color selections, materials, and finishes to ensure a cohesive, high-end outdoor living space.

Yes. We provide flexible financing options to help make high-quality outdoor improvements more affordable. Ask us during your consultation for details and available plans.

Yes, we are known for large-scale composite deck builds and backyard transformations, including walk-out decks, multi-tier designs, and integrated outdoor living features. If you’re planning a premium remodel or full redesign, our team has the expertise to manage engineering, permitting, installation, and finishing details with precision.

Absolutely. GM Home Improvements provides strong manufacturer warranties from brands like TimberTech, along with workmanship warranties to protect your investment. Our goal is peace of mind, knowing your deck is built to perform and built to last.

Visit our online portfolio and project gallery to explore completed composite decks throughout Lake Country and Southeastern Wisconsin.  We also regularly update our Facebook page with recent projects. You can also read homeowner reviews to see why we’re one of the best-reviewed composite deck builders for residential homes in the region.

Choosing the right builder is key to ensuring long-term performance and value. Look for a deck contractor with proven experience, strong customer reviews, professional licensing and insurance, and a portfolio of completed composite deck projects. At GM Home Improvements, we’re a trusted local builder serving Waukesha, Oconomowoc, Pewaukee, Delafield, Hartland, Muskego, New Berlin, and surrounding areas in Southeastern Wisconsin, delivering premium craftsmanship and high-quality materials built to last in Wisconsin’s climate.

While composite decking has a higher upfront cost, it delivers significant long-term savings thanks to minimal maintenance and exceptional durability. No staining, sealing, sanding, or replacing warped boards—just long-lasting beauty and value.

Our process includes consultation, custom 3D design planning, permitting, framing and structural preparation, decking and railing installation, finishing details, and final walkthrough. We handle every detail so your project stays on schedule and stress-free.

We proudly install TimberTech composite decking, made from recycled materials that reduce environmental impact without compromising performance. TimberTech is fade-resistant, moisture-resistant, and delivers natural wood aesthetics without the upkeep of traditional lumber.

We specialize exclusively in custom composite, large-scale outdoor living environments and turn-key builds that elevate your home. As a TimberTech-certified installer and experienced composite deck contractor, we provide detailed design planning, structural engineering expertise, and transparent communication from start to finish, so you can enjoy the process and love the results.