Welcome to 339 S. Madison Avenue, a beautifully remodeled home in one of Monrovia s most desirable neighborhoods, offering modern upgrades, exceptional flexibility, and outstanding long-term value. The main residence has been thoughtfully renovated with contemporary finishes while preserving its timeless character. An open and inviting layout, updated kitchen, remodeled bathrooms, and abundant natural light create a move-in-ready home designed for comfortable California living. A standout feature of the property is the detached, city-permitted recreation room with a bathroom, offering approximately 764 square feet of versatile bonus space. This detached structure is ideal for a home office, art or music studio, fitness room, media room, hobby space, creative workspace, or private retreat. Its flexibility makes it an exceptional extension of the home while allowing buyers to envision countless lifestyle possibilities. Additional improvements over the years include permitted building, electrical, plumbing, and mechanical upgrades, reflecting continued investment in the property. Outside, enjoy a spacious backyard perfect for entertaining, gardening, or relaxing, along with a paid-off solar system that helps reduce long-term utility costs. Located just minutes from Old Town Monrovia, there are parks, hiking trails, restaurants, shopping, Metro access, and the 210 Freeway, this home offers the perfect combination of neighborhood charm and everyday convenience. Whether you re searching for a beautifully updated primary residence, a home with substantial flexible bonus space, or a property with long-term upside in one of the San Gabriel Valley s most sought-after communities, 339 S. Madison Avenue is a rare opportunity not to be missed. Property Highlights * Beautifully remodeled main residence * Detached city-permitted recreation room (approximately 764 sq. ft.) * Extensive permitted improvements completed over multiple years * Paid-off solar system * Spacious private lot * Quiet residential neighborhood * Close to Old Town Monrovia, parks, shopping, dining, Metro, and the 210 Freeway * Move-in ready Buyer is advised to independently verify square footage, permits, room uses, and any intended future use of the property.