WA Construct designed and built this two-level home addition in Allendale, NJ, transforming the rear of the home with a vaulted open-concept kitchen and living room on the main level and a walkout family room below. The addition features exposed wood ceiling beams, a cathedral ceiling with floor-to-ceiling gable windows, a transitional kitchen with gray shaker cabinetry, marble countertops, a custom range hood, and a farmhouse sink. Custom details include built-in shelving flanking the fireplace, a window seat with storage, and a traditional powder room with botanical wallpaper and board-and-batten wainscoting. The lower level opens through French doors to the rear yard. Blue cedar shake siding and integrated rooflines ensure the addition blends seamlessly with the original home.