Welcome to 502 First Avenue, an exceptional estate residence in one of Petrolia's most prestigious neighbourhoods. Set on an impressive 75' x 196' lot, this distinguished 5 Bedroom, 3.5 bathroom home backs onto a beautiful pond and trees with serene views of wildlife, waterfowl, and jumping fish, while overlooking the fairways of Kingswell Glen Golf Club in the distance. The home's timeless stone exterior, concrete driveway, full lot irrigation system, extended double garage with rear yard access, and garage capacity for up to three vehicles create both curb appeal and everyday practicality. Situated on a quiet street, this is a rare opportunity to enjoy luxury living surrounded by nature. Inside, a dramatic two-storey foyer welcomes you with soaring ceilings, expansive windows, a winding hardwood staircase, and stunning sight lines through the great room to the water beyond. Hardwood flooring spans the principal living spaces, complemented by tile in the wet areas. The main level offers a formal dining room, chef-inspired kitchen with built-in appliances, island, and dining nook overlooking the deck and picturesque backyard. A bedroom and powder room provide flexibility for guests, family, or a home office. Upstairs, the spacious primary retreat features a unique turret sitting area with panoramic pond and golf course views, walk-in closet, and luxurious five-piece ensuite. Two additional bedrooms, a four-piece bath, finished laundry room with folding space, and an unfinished bonus room above the garage offer excellent family living and future potential. The fully finished lower level boasts high ceilings, an additional bedroom, three-piece bath, large recreation room, cold room and abundant storage. Enjoy golf just moments away and all of Petrolia's amenities within minutes. For those seeking a more relaxed pace of life without sacrificing convenience, Sarnia and London are both an easy drive away. A rare offering where luxury, privacy, and lifestyle converge.