
Unmatched Architectural Insight. Proven Legal Impact.
We provide expert architectural opinions to attorneys, offering clarity on issues ranging from building codes to construction defects. With experience in depositions and courtroom testimony—including numerous slip and fall cases—we understand the legal process and the standards of care applicable to all parties involved.
With over 40 years of architectural practice across multiple states, our firm has helped secure multi-million dollar awards by combining deep technical knowledge with strategic insight. We’ve earned over 40 design awards and are recognized for unmatched expertise in construction documentation and detailing—critical elements in building-related litigation.
Our firm is uniquely led by the only AIA Fellow honored specifically for excellence in technical detailing and construction documentation.
We begin every engagement by thoroughly understanding the legal issues at hand. Through in-depth research and analysis, we develop precise, defensible opinions. Our goal is to support your case with clarity, credibility, and the highest level of professional commitment—delivering the best possible results for your clients.

Expert Witness Services
Our expert witness services include thorough, clearly written reports, deposition testimony, and courtroom appearances. We focus on delivering precise, fact-based opinions that stand up under legal scrutiny. With extensive experience in both plaintiff and defense cases, we understand the nuances of legal strategy and tailor our analysis to address the specific needs of attorneys and their clients.
In addition to document review and testimony, we offer on-site testing capabilities, including slip resistance (coefficient of friction), door force testing for ADA compliance, and light level measurements in foot-candles to assess compliance with applicable codes. When specialized input is needed, we coordinate with trusted professionals to ensure your case is fully supported. Just as importantly, we’re honest—if an issue falls outside our expertise, we’ll tell you. Our goal is to provide clear, technically sound guidance that strengthens your case.

Code and Standards Research
Our firm offers unmatched expertise in building codes, life safety, and accessibility standards—both current and historical. We have a deep understanding of how national and local codes (IBC, ADA, NFPA, ANSI, etc.) apply to real-world conditions, and how past versions of these codes may impact older structures or incidents. This knowledge allows us to assess compliance and standard of care issues with clarity and authority.
In forming our expert opinions, we go beyond the codes themselves—consulting technical publications, code commentaries, and books written on relevant issues to build a well-rounded, research-backed foundation. Our ability to interpret and creatively apply these standards to your case ensures strong, defensible conclusions that align with both legal and architectural expectations.

Construction Drawing Review
Our firm has extensive experience reviewing architectural and construction documents for code compliance, constructability, coordination, and adherence to the professional standard of care. We evaluate the clarity and competence of detailing and understand the roles and responsibilities of architects and consultants during both design and construction administration phases. This includes a strong grasp of the duty of care expected within the profession.
For over 25 years, we’ve served as signatory on construction documents using our licenses across multiple states. Our background in a wide range of office environments gives us practical insight into real-world design processes and documentation standards. This experience allows us to identify issues, clarify responsibilities, and provide sound, defensible opinions that support your case.

On-Site Testing, Field Verification and Exhibits for Trial
Our firm provides on-site testing and field verification services to support expert analysis and litigation needs. We utilize specialized tools to conduct slip resistance testing (coefficient of friction), door force measurements for ADA compliance, and light level readings in foot-candles to verify code-required illumination. In addition, we take precise field measurements and can produce accurate, scaled drawings to document existing conditions or clarify issues under dispute.
Beyond investigation, we can develop and redesign solutions to bring buildings into compliance with applicable codes and standards. These can be used as part of legal strategy or settlement discussions. When needed, we also coordinate cost estimates to support the proposed changes. We deliver practical, technically sound solutions that strengthen your case and provide clear paths forward.
Results-driven architectural expert witness services
DSE Experts delivers unmatched technical expertise, innovation, and proven results. Discover how our commitment to excellence can contribute to your success.
"David Swartz's deep knowledge of codes and expertly written report was instrumental in securing a multi-million dollar award for our client. His expertise is unmatched."
San Francisco Attorney- Slip and Fall Stair Case.
Contact us
Location and Contact
Los Angeles CA 90025
Phone: 310-617-6788
Contact: David Louis Swartz FAIA IIDA
LEED AP NCARB
Email: dswartz@dse-experts.com