Business Details
50+ Years
experience
Expert Structural Engineering & Building Repair Services
Since 1953, Klein & Hoffman has been a leader in structural and architectural engineering, delivering practical, results-driven solutions for building assessment, repair, and restoration. Our team of licensed architects and engineers specializes in addressing complex challenges, from faade ordinance inspections to historic preservation, ensuring safety, compliance, and longevity for high-rise buildings, campuses, and landmarks. With offices in Chicago, Milwaukee, and Philadelphia, we combine decades of experience with a collaborative culture, prioritizing client needs and sustainability through initiatives like our Green Materials Initiative.Our commitment to innovation, integrity, and community engagement has earned us a trusted reputation in the industry, supported by partnerships with leading professional associations and a focus on employee development.
Services
Faade Repair
Feasibility Studies
Roofing & Waterproofing
Enclosure Leak Investigations
Historic Preservation
Energy Modeling
Permit Peer Review
Roof Anchor Services
Details
- Year established: 1953
Highlights and features
- We specialize in faade ordinance compliance for Chicago, Philadelphia, and Milwaukee buildings.
- Our team includes licensed architects and structural engineers with 60+ years of combined experience.
- We offer end-to-end solutions from condition assessments to historic preservation.
- We maintain a Green Materials Initiative to reduce construction-related carbon emissions.
- We conduct over 600 faade inspections annually with 3,000+ submitted compliance reports.
What people say
Thorough assessments
Responsive service
Expertise in ordinances
Reliable solutions
Technical excellence
Services
Faade Repair
Klein & Hoffman specializes in faade repair and maintenance for low-rise and high-rise buildings. Our licensed engineers diagnose deterioration, water infiltration, and code compliance issues, providing cost-effective restoration solutions. Services include restorative cleaning, sealant replacement, and ordinance inspections to ensure safety and regulatory adherence.
Feasibility Studies
We conduct multidisciplinary feasibility studies to evaluate structural, architectural, and code compliance for proposed building modifications. Our team provides technical assessments, preliminary calculations, and actionable recommendations to determine project viability, ensuring alignment with zoning laws and life safety standards before design or construction begins.
Enclosure Leak Investigations
Our experts use infrared thermography, moisture meters, and diagnostic water testing to identify sources of water infiltration in building enclosures. We deliver detailed reports with repair strategies to prevent structural damage, mold growth, and energy inefficiencies, ensuring long-term building performance and occupant safety.
Roof Anchor Services
Klein & Hoffman provides OSHA-compliant roof anchor inspections, testing, and system design. We ensure anchors meet 5,000-pound load requirements through annual visual checks and decennial certifications, while also designing new anchor systems integrated with roofing to prevent water infiltration and maintain safety standards.
Historic Preservation
We specialize in preserving historic structures through condition assessments, material testing, and rehabilitation plans. Our team collaborates with preservation agencies to maintain architectural integrity while modernizing systems, ensuring compliance with heritage regulations and extending the lifespan of culturally significant buildings.
People
Terry McDonald
CEO / Principal
Terry McDonald leads Klein & Hoffman with over 30 years of structural engineering experience. He specializes in building enclosure commissioning and historic preservation, driving client-focused solutions while advancing the firm's sustainability initiatives.
Allysia Youngquist
President / Principal
Allysia Youngquist oversees strategic growth and operations at Klein & Hoffman. With expertise in structural adaptive reuse, she champions innovative design solutions and fosters a collaborative culture that prioritizes client satisfaction and technical excellence.
Todd Gorrell
Principal
Todd Gorrell specializes in forensic evaluations and litigation support. He provides expert witness testimony and technical analysis for building failures, combining deep engineering knowledge with clear communication to resolve complex disputes.
Thomas Flynn
Associate Principal
Thomas Flynn leads faade ordinance inspections and permit peer review projects. He ensures compliance with Chicago, Philadelphia, and Milwaukee regulations, delivering practical solutions for building owners while maintaining strict safety standards.
Caitlin Maggiano
Associate Principal, Manager
Caitlin Maggiano manages client relationships and project coordination for faade and roofing services. She focuses on clear communication and tailored solutions, ensuring projects meet technical, budgetary, and timeline requirements across commercial and historic properties.
Questions
What types of buildings do you specialize in?
We focus on commercial, institutional, and historic structures, including high-rises, campuses, and landmarks.
Do you provide services for residential properties?
No, we specialize exclusively in commercial, industrial, and historic building projects.
Are you compliant with Chicago façade ordinances?
Yes, we conduct thousands of façade inspections and reports annually for Chicago buildings.
Can you assist with LEED certification requirements?
Yes, our energy modeling and green materials initiatives support LEED certification goals.
Do you offer emergency repair services?
We prioritize scheduled assessments but can expedite critical repair projects when needed.
How do you ensure code compliance for renovations?
Through feasibility studies, permit peer reviews, and collaboration with local authorities.
