Welcome to 4320 Rio Hondo Ave – A Rare Rosemead Gem with Income Potential! This beautifully maintained 4-bedroom, 2-bath main home offers the perfect blend of comfort, space, and functionality. Inside, you'll find a bright and inviting layout with generous-sized bedrooms, updated bathrooms, and a warm, welcoming vibe throughout. New Roof installed within the last year. But the real showstopper? A brand new (2023) PERMITEED ADU—complete with 1 bedroom, 1 bathroom, and its own private entrance—ideal for multigenerational living, guests, or generating rental income. The lot offers plenty of parking and outdoor space for entertaining or relaxing under the SoCal sun. Located in a prime Rosemead neighborhood near schools, shopping, and freeways, this property is a smart investment and a perfect place to call home. Live in one, rent the other—or keep everyone close with room to breathe. Opportunities like this don’t come often!