Bringing Your Dreams to Life
Welcome to Subrosa – We Bring Engineering Excellence to the Surface—and Below It
Trusted by Leading companies
Solving Structural Challenges With a Creative Process
Founded and led by a licensed Professional Engineer (PE) with extensive experience in civil and structural engineering
Quality
We are committed to delivering top-quality results
Safety
Built to last, our safety policies uphold the highest standards, ensuring structures that endure for decades to come.
Reliability
With dependable expertise, we ensure every project is completed on schedule and built to the highest standards
About Subrosa LLC
At Subrosa LLC, we bring engineering excellence to the surface—and below it.
Founded and led by a licensed Professional Engineer (PE) with extensive experience in civil and structural engineering, Subrosa LLC specializes in creating innovative, robust, and discreet solutions for a variety of complex projects.
Our Expertise
With a focus on both traditional and specialized engineering services, Subrosa LLC is proud to offer:
Underground Construction
Designing and constructing underground spaces that balance functionality and safety, whether for utilities, storage, or secure facilities.
Underwater Construction
Designing and constructing underground spaces that balance functionality and safety, whether for utilities, storage, or secure facilities.
Secret and Panic Room Construction
Designing and constructing underground spaces that balance functionality and safety, whether for utilities, storage, or secure facilities.
Structural Design and Consultancy
Designing and constructing underground spaces that balance functionality and safety, whether for utilities, storage, or secure facilities.
Why Subrosa LLC?
As an independent contractor and freelance engineer, Subrosa LLC provides clients with a personalized, hands-on approach. Every project is treated with the highest level of attention to detail, confidentiality, and professionalism. From initial consultation to final delivery, we are committed to bringing your vision to life with structural integrity and engineering excellence.
Our Promise
At Subrosa LLC, we don’t just build structures; we build trust. Whether above ground, below ground, or underwater, you can count on us to deliver tailored solutions that stand the test of time.
Let’s build something extraordinary—together.
Our Notable Projects
Since 2012, Subrosa LLC has been at the forefront of civil and structural engineering, specializing in underground and underwater construction. Our expertise has contributed to several world-renowned projects, as well as highly confidential private endeavors. Here are a few highlights from the past decade
Crossrail (Elizabeth Line), London, UK
Underground Project
Provided structural consulting on key tunnel segments, focusing on stability and long-term durability in densely populated urban areas.
Los Angeles Metro Regional Connector, USA
Underground Project
Supported tunneling efforts for this significant underground transit expansion, addressing complex soil conditions and seismic considerations.
Norra Djurgårdsstaden Eco-City,
Stockholm, Sweden
Underground Project
Designed underground infrastructure for one of the largest urban development projects in Europe, ensuring sustainability and resilience.
Private Projects
Underground Project
Designed bespoke underground luxury spaces and fortified facilities for private clients across Europe and the U.S., integrating security, functionality, and architectural elegance.
Hong Kong-Zhuhai-Macau Bridge,
China
Underwater Projects
Collaborated on underwater structural components for the world’s longest sea-crossing bridge, particularly in deep-water tunnel sections.
Fehmarn Belt Fixed Link,
Denmark-Germany
Underwater Projects
Provided engineering consultancy for this 18-kilometer immersed tunnel, a vital connection between Scandinavia and mainland Europe.
Seattle Waterfront Tunnel, USA
Underwater Projects
Contributed to the design and safety measures of this ambitious underwater roadway, tackling seismic and hydrological challenges.
Private Projects
Underwater Projects
Led confidential underwater construction initiatives in Asia and the Caribbean.
Highly Confidential Projects
Subrosa LLC has also undertaken anonymous and highly sensitive assignments, such as:
- High-security underground bunkers and panic rooms for private clients in Europe, Asia, and the U.S.
- Hidden underwater facilities designed for marine exploration and private recreational use.
- Secure underground vaults for asset storage in locations with demanding environmental and security requirements.
These projects reflect our dedication to solving complex engineering challenges while safeguarding the privacy of our clients. Subrosa LLC is committed to innovation, precision, and discretion in every venture, offering tailored solutions that redefine structural and security standards.
Privacy Policy
At Subrosa LLC, we understand that discretion and confidentiality are paramount when it comes to secret room and panic room projects. For this reason, we do not showcase or publicize these designs or completed works. The nature of these projects demands the utmost privacy to ensure the safety and security of our clients.
Tailored Solutions for Your Unique Needs
Our approach is deeply personal and collaborative. We meet with each client to discuss their specific concerns, goals, and security needs. Whether it’s a hidden space for personal peace of mind or a highly fortified panic room for ultimate protection, every design is meticulously crafted to align with your lifestyle and requirements. No two projects are ever the same, as each is tailored exclusively to the individual or family it serves.
What Subrosa Stands For
The name “Subrosa” originates from Latin, meaning “under the rose.” Historically, this phrase symbolized confidentiality and trust, as a rose suspended above a meeting table was a pledge that discussions would remain private. At Subrosa LLC, we carry this ethos into every project we undertake, committing to absolute discretion and trustworthiness.
Our Commitment
Subrosa LLC stands for integrity, security, and innovation. We prioritize your safety while honoring your need for privacy. By choosing Subrosa LLC, you can be confident that your project will remain confidential, and your design will be uniquely yours—a seamless blend of engineering excellence and personal care.
If you’re ready to discuss your vision in confidence, we’re here to help. Let’s create a secure solution that brings you peace of mind.
Contact Us
To discuss your next project or learn more about how Subrosa LLC can meet your unique needs, reach out today
Address
Oakwood Business Plaza, Suite 250, 221 Barton Springs Rd, Austin, TX 78704
info@prosubrosa.com, Christian@prosubrosa.com
Phone
(+1) 5127791978