6431 Rockcliffe Estates, Niagara Falls. 5+1 Bed | 6,700+ Total Sq Ft | Walkout Ravine Lot. Welcome to 6431 Rockcliffe Estates—an executive showpiece tucked away on one of Niagara Falls’ most prestigious streets, in the sought-after Calaguiro Estates. This grand, custom-built residence, designed by acclaimed architect Michael Allen & constructed by renowned builder Schneider Homes, offers an unmatched combination of scale, quality, & location. Set on an expansive 77x255 ft true ravine lot with no rear neighbours, this 5+1 bedroom, estate offers nearly 4,000 sq ft above grade, and over 6,700 sq ft of meticulously finished living space. Surrounded by mature trees and backing onto protected greenspace, the setting delivers total privacy right in the city. Inside, discover timeless elegance with soaring ceilings, rich hardwood flooring, oversized principal rooms, and large windows that flood the home with natural light. The main level is thoughtfully laid out with a formal dining and living room, a private office, a spacious great room with vaulted ceilings and a double-sided fireplace, and an updated chef’s kitchen featuring granite counters, a walk-in pantry, and direct access to the elevated covered terrace. The main-floor primary suite is a serene escape, offering dual walk-in closets, a 5-piece ensuite, and sliding doors to a private covered balcony with peaceful ravine views. Upstairs, four generously sized bedrooms all include ample closet space. The fully finished walkout basement is an entertainers dream and ideal for large families or in-law accommodations. It features a complete second kitchen, wet bar, games/poker room, oversized family room with gas fireplace, an additional bedroom, and two large storage rooms. The lower level opens directly to a stone patio & landscaped backyard, with its own separate entrance through the garage. This is a rare and refined offering in one of Niagara's most exclusive enclaves. Luxury. Privacy. Welcome home. Luxury Certified.