First time on market since 2000! Welcome to 6 Santa Gustavo, ideally situated on a quiet cul-de-sac within a sought-after gated community Monterrey Estate in Rancho Santa Margarita. Originally built with numerous builder-upgraded features, this spacious residence offers 6 bedrooms, 4 full bathrooms, approximately 3,223 sq ft of living space, and a 4,809 sq ft lot, along with a three-car garage. The spacious floor plan features soaring ceilings, a dramatic two-story foyer, an elegant curved staircase, and a main-floor bedroom with a full bath. The interior features marble flooring, brand-new laminate flooring, and fresh interior paint throughout. The home is bright, clean, and move-in ready. The spacious primary suite features a beautifully finished stone and tile bathroom with dual vanities, an oversized soaking tub, and a separate walk-in shower. Both walk-in closets have been upgraded with organized storage systems. The private backyard features extensive stone paving, artificial turf, an outdoor fireplace, and a spacious entertaining bar, with a peaceful hillside backdrop and no direct rear neighbor. Minute walk to a K–8 school and conveniently close to parks, trails, shopping, dining, and RSM Lake. Residents also enjoy SAMLARC amenities including pools, tennis and pickleball courts, parks, trails, and the Lago Santa Margarita Beach Club & Lagoon. Low HOA and low property tax rate, 6 Santa Gustavo combines spacious living, quality updates, convenient location, and exceptional community amenities.