Welcome to 4th + J, a destination for chic living in the San Diego Marina District. Weve created an eclectic brand-new community meant for productive days, free-spirited nights, and discovering all your city has to offer. Choose from our luxury studios, one, and two bedroom apartments to find the floor plan for your everyday living. Wake up each day in a space unique to your tastes, with upscale and convenient features built to inspire. Live in the heart of a community of diverse interests. Work and play come together at 4th + J.