Rare Fountain Valley opportunity with ADU, JADU, and SB9 potential already in motion. Beautifully upgraded for modern luxury living today, with plans and city application work already started for future expansion, multi-generational living, or income-producing possibilities. Located at 17573 Santa Cristobal Street, this single-level home offers a rare combination of style, comfort, and long-term upside. Extensively upgraded in 2026, the home features a clean, elevated design with warm modern finishes throughout. The curb appeal immediately stands out with smooth exterior stucco, painted roof, new black-framed windows, upgraded front hardscape, modern driveway, new garage door, new entry door, and beautiful landscape lighting that gives the home a striking evening presence. Inside, the home feels bright, open, and inviting. The floor plan features new tile flooring throughout, engineered wood flooring in the living room, recessed lighting, designer wood accent walls, an electric fireplace, and a stylish updated kitchen with a center island and new appliances. The finishes are modern yet warm, creating a home that feels polished, comfortable, and move-in ready. The backyard is designed for true Southern California living, featuring a new pergola with string lights, mature landscaping, generous patio space, and a peaceful setting perfect for outdoor dining, entertaining, or relaxing at the end of the day. The seller has already invested in ADU/JADU/SB9 plans and city application work, with plans submitted to the City on January 12, 2026 and currently under review. Seller states all available plans and documents are intended to transfer to the buyer at closing, giving the next owner an opportunity to continue the process and explore future expansion, multi-generational living, or income-producing possibilities. Move in, enjoy the upgrades, and keep the door open to what this property could become next. A rare blend of lifestyle, flexibility, and future upside in the heart of Fountain Valley.