3rd & 3rd: A New Luxury Landmark Rising in Downtown St. Petersburg

Downtown St. Petersburg is expanding its skyline with the development of 3rd & 3rd, a high-rise residential tower designed to bring luxury living and modern retail to the city’s core. Located at the northwest corner of 3rd Avenue South and 3rd Street, the project represents a significant shift in land apply for the area, replacing a three-story office building and a surface parking lot with a massive residential hub.

Project Specifications and Design

The 3rd & 3rd tower is one of the largest buildings currently under development in St. Petersburg. Spanning a .88-acre site, the building will offer a variety of living options, ranging from modest studios to expansive, two-story top-floor penthouses. To maximize the coastal environment, the residences will feature floor-to-ceiling windows and angular balconies measuring between 12 and 14 feet, providing views of the St. Pete skyline and Tampa Bay.

The project’s architectural and engineering team includes Baker Barrios Architects for design, Osborn Engineering for site engineering and B&W Structural Designs for structural engineering.

Luxury Amenities and Urban Integration

Beyond the individual residences, 3rd & 3rd is designed as a lifestyle destination. Residents will have access to a suite of high-end amenities, including:

• An eighth-story pool deck.
• A professional fitness center.
• A community kitchen and dedicated operate-from-home spaces.
• Outdoor fire pits for socializing.

The development similarly emphasizes urban connectivity by integrating more than 15,000 square feet of retail space on the ground floor, encouraging pedestrian activity in the downtown district. To support the residential population, the plans include more than 320 parking spots.

Construction Progress and Timeline

Construction on the tower officially began in early 2024. A critical milestone occurred in January 2025, when KAST Construction prepared for one of the city’s largest foundation pours. This main core mat foundation pour, involving 4,000 cubic yards of concrete, commenced on January 24, 2025, marking the transition to vertical construction.

The overall construction timeline is estimated at 24 months, with the building expected to be completed by mid-2026.

Frequently Asked Questions

Where exactly is 3rd & 3rd located?

The tower is located at 235 3rd Street South, St. Petersburg, FL, 33701, in Pinellas County.

Who is developing the project?

The project is a collaboration between St. Pete-based developer Echelon and Third Lake Capital.

What makes the balconies unique?

The residences feature angular balconies that range from 12 to 14 feet in size, designed to provide expansive views of the surrounding city and bay.

Looking Ahead

As 3rd & 3rd moves toward its 2026 completion date, it stands as a testament to the rapid growth of downtown St. Petersburg. By combining high-density luxury housing with significant retail space, the project is set to enhance the urban fabric of the Sunshine City, offering a modern living experience that blends residential comfort with city convenience.