43312 Via Siena Located along the 18th fairway of the Jack Nicklaus South Course at Toscana Country Club, this custom estate blends Tuscan-inspired architecture with sweeping golf course and mountain views. Designed around a private courtyard and created for effortless indoor-outdoor living, the residence offers both architectural character and extensive modern upgrades. A grand entry introduces soaring ceilings, travertine flooring, and elegant crown molding throughout the main living spaces. Expansive pocketing glass doors open both the living room and great room to the outdoor entertaining areas, creating seamless indoor-outdoor living while framing panoramic fairway views beyond the pool. The backyard retreat is designed to feel like a private resort, featuring a custom pool and spa with water and fire features, a built-in barbecue, and beautifully updated landscaping with new irrigation, landscape lighting, and decorative wrought iron fencing along the golf course. The home's location also offers convenient golf-cart access to the Toscana clubhouse and its private dining and social amenities. The spacious primary suite enjoys golf course views and direct access to a private spa separate from the main pool. Guest accommodations are exceptional with a detached two-bedroom casita complete with a sitting area and kitchenette, offering privacy and comfort for visitors. A versatile bonus room with an ensuite bath provides flexible space for a media room, office, or additional guest accommodations. During ownership, the home has undergone extensive upgrades and system improvements, including four high-efficiency HVAC systems (three 5-ton systems serving the main residence and one 4-ton system serving the casita) with Nest smart thermostats, a dedicated refrigeration system for the temperature-controlled wine cellar, and ductless mini-split systems in both garages. Additional improvements include full interior and exterior repainting, new recessed LED smart lighting throughout, Lutron switches and outlets, a 14-zone whole-home audio system with 16 speaker pairs, and integrated smart home controls for lighting, pool features, thermostats, and audio via four wall-mounted iPads. The home also features new dual Cove dishwashers, LG washer and dryer, and owned solar for energy efficiency. With its thoughtful upgrades, timeless architecture, and prime fairway setting, this is an exceptional opportunity to enjoy luxury golf course living in one of Toscana Country Club's mos