Welcome to 18 Via Pelayo, a beautifully upgraded 4 bedroom plus oversized bonus room home in the desirable Cantamar neighborhood of Rancho Santa Margarita. Set on a quiet street, this 2,763 sq. ft. residence combines thoughtful interior improvements, major system upgrades, and a newly completed resort-style backyard. The home features a remodeled kitchen, completely remodeled primary bathroom, newer PEX re-pipe, newer furnace, air conditioning and ducting, plus an owned 34-panel solar production system. Upstairs, a huge bonus room with built-ins offers exceptional flexibility for a media room, office, playroom, homework space, gym, or secondary living area. The backyard is a true standout. Completed in 2026, the new pool, spa, built-in BBQ/grill, fire feature, and hardscape create a private outdoor setting designed for entertaining, relaxing, and everyday enjoyment. The modern pool and spa design, artificial turf, lounge areas, and built-in outdoor kitchen give the yard a clean, low-maintenance, resort-style feel. The location adds to the appeal, with nearby hiking and biking trails, convenient access to parks, shopping, dining, schools, and toll road connections. As part of SAMLARC, residents enjoy access to Rancho Santa Margarita's signature lifestyle amenities, including Lago Santa Margarita, the Beach Club & Lagoon, pools, parks, trails, sport courts, picnic areas, and community gathering spaces. SAMLARC lists amenities including pools, Beach Club & Lagoon, lake, parks, trails, tennis courts, pickleball courts, basketball courts, volleyball courts, clubhouses, amphitheaters, picnic shelters, and more. 18 Via Pelayo offers the space, upgrades, outdoor living, and community lifestyle buyers are looking for in one of Rancho Santa Margarita's most established neighborhoods.