About US
Proudly serving the St. Louis Historical Districts.
Preserving History. Building with Integrity.
CEMAX is a premier construction company specializing in the restoration of historic homes throughout the St. Louis Historical Districts. With a deep appreciation for the architectural nuances that define these treasured properties, we bring unmatched expertise, care, and quality to every project.
Our team combines industry-leading construction practices with a strong commitment to preservation, delivering exceptional results for homeowners. From fascia restoration to structural repairs, we ensure every detail respects the building’s original character while adhering to the highest standards of safety and durability. Our streamlined, in-house approach guarantees quality control, efficiency, and lasting outcomes.
Our Expertise
- Historic Home Restoration & Renovation
- Chimney Restoration & Rebuilding
- Custom Scaffolding & Aerial Access
- Structural Repairs
- Masonry Work (brick, limestone, terracotta)
- Exterior Carpentery (soffit and fascia)
- Licensed General Contractor
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Our History
Established in October 2020 in St. Louis, Missouri, CEMAX is a young, dynamic company fueled by practical skills and scientific knowledge. Founded by Argentina-born Cristian Entesano, the company reflects his deep expertise in engineering principles and his unwavering pursuit of quality. Before founding CEMAX, Cristian spent nearly a decade working in Argentina’s heavy metal fabrication industry at Construmet (2010–2019), where he specialized in the production of tanks and structural components for the petroleum, chemical, and food industries. During that time, he led efforts in quality, safety, and environmental management, abilities that now define CEMAX approach to every project. Through Cristian’s extensive experience in both industrial and residential construction, CEMAX has developed a broad and practical aptitude set, including:
- Project and operations management
- Scaffold design and building
- Historic restoration and remodeling
- Roofing
- Chimneys restoration and rebuilding
- Tuckpointing
At CEMAX, every project we take on is treated with the care and attention it deserves, because restoring history isn’t just what we do, it’s who we are.
Our Mission,
Vision and Team
Mission
At CEMAX, our mission is to preserve the architectural legacy of St. Louis by delivering expert restoration and construction services tailored to historic homes. We blend modern building techniques with rigorous safety standards to ensure every project is executed with quality, integrity, and lasting value.
Vision
To inspire a renewed appreciation for St. Louis’ architectural heritage by leading the way in historic restoration, combining technical expertise, commitment to safety, and a passion for preservation to ensure its beauty and legacy endure for generations.
team
At CEMAX, we are a versatile, proactive, and integrative group of professionals working together to deliver outstanding results while honoring the integrity and history of the spaces we restore. We believe that a strong, supportive work environment leads to stronger outcomes for our clients. We collaborate with structural engineers and architectural professionals to ensure every plan meets technical standards and long-term performance goals. We approach each task with professionalism, and a shared purpose: to build with integrity.
workers on site
working at once
A Brief History of St. Louis
Founded in 1764 by French fur traders Pierre Laclède and Auguste Chouteau, St. Louis began as a strategic trading post along the Mississippi River. Named after King Louis IX of France, the city quickly grew into a bustling hub of commerce, culture, and migration—earning its nickname, “The Gateway to the West.”
St. Louis’s rich architectural heritage reflects its diverse cultural influences, from French Colonial and Victorian styles to Federal, Italianate, and Romanesque Revival structures. The city is home to iconic neighborhoods and historic districts like Lafayette Square, Soulard, and Central West End, where intricate brickwork, ornamental iron, and stone fasciae tell stories of craftsmanship and eras past.
With a legacy shaped by French, Spanish, African American, German, and Irish communities, St. Louis remains a vibrant cultural crossroads—deeply proud of its traditions, resilient neighborhoods, and architectural treasures.
At CEMAX, we are proud to contribute to this legacy. Our mission is to honor the city’s past while building a safer, more beautiful future—one project at a time.