521 12th Street Cash-Flowing Duplex in San Leon – $3, 200 Gross Monthly Income with market rate between $1800-$2000+!! Investor special! This fairly recent construction duplex is a turn-key income producer with both sides rented at $1, 600 per month—that’s $38, 400 annually in gross rental income from day one. With modern design, durable finishes, and low-maintenance layouts, this property is built to perform and attract long-term tenants. Each unit features 3 bedrooms, 2 full baths, spacious open-concept living, and contemporary upgrades that keep vacancy rates low. Strong tenant demand in San Leon, combined with proximity to Galveston Bay, Kemah Boardwalk, and quick access to Houston, makes this an ideal buy-and-hold investment. Whether you’re scaling your portfolio or looking for a solid hedge against inflation, this duplex delivers immediate cash flow, appreciation potential, and zero guesswork. Properties this clean, occupied, and profitable don’t last long—secure it today!