Roundhouse Building LLC is Marathon's premier general contractor, specializing in high-quality coastal residential and commercial construction. We deliver structural integrity and precise local building code compliance for every project along Overseas Highway.

Comprehensive Construction Services

From ground-up builds to complex renovations, our team ensures every detail meets the highest standards for durability and performance in the Florida Keys.

Residential Building

Structural Renovations

Commercial Construction

Marine-grade structural work for custom homes and additions, engineered to withstand coastal conditions and strict local codes.

High-wind resistant renovations and remodeling, enhancing both the safety and value of your existing property.

Reliable commercial construction services for businesses on Overseas Highway, delivered on schedule and within budget.

Uncompromising Quality & Compliance

100%

Keys Code Compliance

Wind-Rated

Engineering

Local

Overseas Highway Presence

Contact us today to discuss your site plans, structural engineering requirements, or renovation timeline. We're ready to build for you.