Welcome to 11 Calle del Mar, a rare 5-bedroom opportunity in the heart of Rancho Santa Margarita, located in the highly sought-after Lyon Promenade community, an intimate neighborhood known for long-term ownership, pride of community, and low turnover. Offering 1,913 sq ft, this beautifully upgraded home features 5 bedrooms and 3 full bathrooms, including a desirable main-level bedroom and full bath with shower ideal for guests, multigenerational living or a private home office. Extensively renovated in 2021 from top to bottom. The thoughtfully updated kitchen showcases quartz countertops, a convenient center island with casual seating, and timeless white shaker-style Thomasville cabinetry & Bosch appliances. Remodeled bathrooms, built-in cabinetry in many rooms for added storage, a newly remodeled fireplace, whole-house water softener, alkaline drinking-water system and a primary suite with a unique hidden closet featuring built-in shelving and lighting. The backyard is designed for Southern California living and entertaining with a spool featuring a waterfall and gas heat, a premium StruXure pergola with adjustable louvers and electric heater, plus a built-in BBQ, wok burner, sink and beverage cooler. Energy upgrades include 23 owned Sullivan Solar panels, plus a Tesla solar system with two Powerwalls for additional solar generation and battery storage. One of this home's greatest advantages is its location, enjoying true walkability to shopping, dining, parks, fitness, entertainment, and everyday conveniences in the heart of RSM. SAMLARC HOA dues for the city are currently $91 per month and include access to pools, parks, trails, sports courts, the Beach Club Lagoon, and community amenities. For additional flexibility, the garage is currently converted and used as a 6th-bedroom space and can be converted back to a garage at the seller's expense if preferred. With 5 bedrooms, extensive upgrades, exceptional outdoor living and a walkable central location to the heart of Rancho Santa Margarita, 11 Calle del Mar offers a combination that is difficult to find.