For a clean and fresh beach house theme, opt for a white kitchen with beachy accents. Paint the walls and cabinets in a crisp white color to create a bright and inviting space. Choose light-colored countertops like quartz or marble to enhance the airy feel. Incorporate coastal elements by adding seashell-shaped pendant lights, a driftwood-inspired dining table, or a woven seagrass rug. Display beach-themed artwork or hang shelves to showcase seashells and other coastal treasures.