Welcome to 444 Bunsen Street, an exceptional, nearly new residence offering more than 2,550 square feet of beautifully upgraded living in one of San Marcos' most innovative new communities. The home is still under builder warranty. Built in 2025 and thoughtfully enhanced beyond standard builder finishes, this sophisticated three-story home features 4 bedrooms, 4 baths and the rare flexibility of a bedroom and full bath on every level-ideal for multigenerational living, overnight guests, private office space or a dedicated retreat. The light filled main living level is designed for both everyday comfort and effortless entertaining, with an expansive open-concept floor plan, balcony access and a beautiful appointed chef-inspired kitchen featuring quartz countertops, an over sized island, stainless-steel appliances that are all wifi enabled and soft close shaker cabinetry. Upgraded high-end luxury vinyl flooring adds warmth and continuity throughout the home, while plantation shutters and motorized window shades in the main living areas and upstairs provide both style and convenience. Upstairs, the spacious primary suite feels like a private retreat, complete with dual walk in closets, a generous split-vanity bath and its own balcony overlooking the community and surrounding open views. This home was designed with modern California living in mind. A fully purchased solar system with battery backup (4.920 KW DC, 12 Solar Panels) offers significant added value without the burden of solar lease, while EV ready infrastructure, energy-efficient construction and its location within San Marcos' first carbon-free community bring sustainability and technology together beautifully. This home has a zero electric bill. Additional upgrades include an epoxy-finished two-car garage and numerous thoughtful enhancements throughout, creating a home that feels polished, established and ready despite being less than a year old. Outside your door, enjoy resort-style community amenities including a pool and spa, fitness center, clubhouse, outdoor entertaining areas, walking and biking trails and a future park with pickleball courts and play areas. Shopping, dinning and Cal State San Marcos are conveniently nearby. With sophisticated upgrades, flexible living spaces, exceptional energy features and beautiful community and park views, 444 Bunsen Street offers the opportunity to enjoy the benefits of nearly new construction-without the waiting for a home to be built or spending additional time and money completing the upgrades. Recently appraised by a bank at $1,523,000, this is an exceptional opportunity to own one of the community's most thoughtfully upgraded residences.