What Klein and Hoffman does

Klein & Hoffman (legal name: Klein & Hoffman) is a privately held structural and architectural engineering consulting firm founded in 1953 and headquartered in Chicago, Illinois, with additional offices in Milwaukee, Wisconsin, and Philadelphia, Pennsylvania. The firm delivers a comprehensive suite of professional services organized across four practice areas: Evaluation and Assessment (condition assessments, feasibility studies, fa\u00e7ade ordinance inspections, leak investigations, expert witness support, OSHA roof anchor certification); Repair, Rehabilitation, and Restoration (fa\u00e7ade repair, roofing and waterproofing, concrete repair, structural strengthening, historic preservation); Design, Implementation, and Improvement (adaptive reuse, re-glazing/cladding, structural retrofits, new structural design, specialty structures for aquatic and kinetic applications); and Building Performance and Compliance Consulting (Building Enclosure Commissioning, mission critical facility and data center consulting, controlled environment buildings, reserve studies, pre-purchase reviews, code review, construction monitoring). The technology stack centers on conventional engineering tools including BIM (Revit Structure), RAM structural analysis, and thermal/hygrothermal modeling rather than proprietary software or AI/ML systems.

The firm serves building owners, campus and facility managers, condominium association boards, architectural firms, universities, and institutional clients across the Midwest and Mid-Atlantic, excluding single-family residential work. Client engagements are project-based, fee-for-service contracts typically procured through reputation-driven direct relationships and architectural firm partnerships rather than formal sales motions. Marquee clients include Shedd Aquarium (continuous service since 1997), Chicago Union Station (CBRE), Advocate Lutheran General Hospital, Motorola Mobility, Astellas, Drake Hotel, Old Joliet Prison, and the University of Pennsylvania. Repeat architectural partnerships, notably with Goettsch Partners and Thornton Tomasetti, function as core distribution channels for high-value projects.

Revenue is generated through professional services fees on non-recurring project engagements, though long-duration institutional relationships (multi-decade engagements with landmark clients) provide recurring baseline demand. The firm is independently owned with no disclosed parent company, private equity, or venture capital involvement and reports an average employee tenure of approximately 10 years. There are no publicly disclosed pricing structures; engagements are quoted on a project-by-project basis reflecting scope, complexity, and client requirements. Headcount is reported in the 101-250 range, consistent with a mid-market A&E consulting firm operating across three regional offices.

Name

Klein and Hoffman

Legal name

Klein & Hoffman

Website

https://kleinandhoffman.com

Company type

Private

Founded year

1953

Operating status

Operating

Headcount range

101–250 employees

Short description

Klein & Hoffman is a privately held structural and architectural engineering consulting firm founded in 1953, serving building owners, property managers, architectural firms, and institutions across the Midwest and Mid-Atlantic from offices in Chicago, Milwaukee, and Philadelphia.

Ownership category

akta.pro rank

Product category

Structural Engineering Services

NAICS

Engineering Services (541330), Architectural Services (541310)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

akta.pro secondary industries

Architectural Design Services (BPAHAKAA), Renovation, Remodeling & Tenant Improvements (General Contracting) (IMAFAAAE)

Keywords

• Structural engineering services
• Building enclosure consulting
• Historic preservation engineering
• Condition assessment services
• Architectural engineering consulting

Headquarters

HQ city

Chicago

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Engineering and Architectural Consulting Services: Professional services revenue generated through structural engineering, architectural engineering, building enclosure consulting, and inspection services. Projects are typically fee-for-service engagements involving condition assessments, design, repair, rehabilitation, restoration, and new construction structural design. Revenue is project-based and non-recurring in nature, though the firm maintains ongoing relationships with clients for continued services.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Klein & Hoffman provides structural and architectural engineering consulting services to building owners, property managers, condominium associations, architectural firms, and institutional clients. The firm delivers condition assessments, structural repair and strengthening, historic preservation, adaptive reuse, building enclosure consulting, mission critical facility consulting, and new structural design across offices in Chicago, Milwaukee, and Philadelphia.

Product overview

Klein and Hoffman is a structural and architectural engineering firm founded in 1953 offering a comprehensive suite of engineering and consulting services. The company operates as a unified professional services practice organized around four core service areas: Evaluation and Assessment Services (condition assessments, feasibility studies, facade inspections, energy modeling, expert witness services), Repair Rehabilitation and Restoration Services (structural repair, concrete rehabilitation, roofing, waterproofing, historic preservation), Design Implementation and Improvement Services (new structural design, adaptive reuse, tenant improvements, specialty structures), and Building Performance and Compliance Consulting (building enclosure commissioning, data center consulting, controlled environment facilities, reserve studies, code compliance). The portfolio includes specialized sub-services such as building enclosure consulting, mission critical facilities, construction monitoring, and specialty structures for aquatic and kinetic applications. The firm serves clients across multiple U.S. markets including Chicago, Milwaukee, and Philadelphia.

Differentiator

Problem solved

Functional benefit

Products and services

• Evaluation and Assessment Services Comprehensive evaluation services for existing buildings including condition assessments, feasibility studies, facade ordinance inspections, enclosure leak investigations, energy modeling, expert witness/litigation support, permit peer review, and OSHA roof anchor inspection and certification. Targeted at building owners, property managers, condominium boards, and institutions.
• Repair, Rehabilitation, and Restoration Services Structural repair and restoration services including facade repair, roofing and waterproofing, concrete structure rehabilitation, structural repair and strengthening, and historic preservation for existing buildings.
• Design, Implementation, and Improvement Services New construction and renovation design services including structural adaptive reuse, re-glazing and over-cladding, architectural improvements feasibility studies, structural retrofits, tenant improvements, new structural building design, construction engineering, and specialty structures such as kinetic and structural glass systems.
• Building Performance and Compliance Consulting Building performance and compliance consulting including building enclosure commissioning (BECx), building enclosure consulting, mission critical facility/data center consulting, controlled environment building consulting, pre-purchase review reports, reserve studies, plan review and code review, construction monitoring, building code violation consulting and correction, and egress and life safety analysis.
• Building Enclosure Consulting Enclosure consulting services led by a nationally recognized team offering peer reviews, pre-construction collaboration, submittal and shop drawing reviews, field QA/QC, thermal and hygrothermal modeling. The team brings 150+ years of combined experience and currently reviews $5B worth of ongoing construction.
• Mission Critical Facilities and Data Center Consulting Specialized enclosure and structural consulting for mission critical facilities including data centers and hospitals with over a decade of experience providing QA/QC and value-engineered solutions.
• Controlled Environment Building Consulting Specialized enclosure consulting for cold storage, pharmaceutical production, and food processing facilities, including thermal modeling and hygrothermal analysis to verify thermal and moisture performance of enclosure assemblies.
• Pre-Purchase Review Report Collaborative, multi-disciplinary due diligence assessment combining document review, stakeholder interviews, on-site walkthrough, and report development to help buyers understand building condition before purchase.
• Reserve Studies Strategic capital planning tool combining architectural and structural assessment, MEP/FP and elevator review, and component-based reporting with condition ratings, remaining useful life estimates, and projected replacement costs.
• Specialty Structures Engineering Advanced engineering for aquatic and entertainment structures, kinetic structures (theme park rides, rotating venues), and structural glass systems including glass facades, skylights, and monumental glazing.

Quantifiable outcome

• Over 200 OSHA-compliant roof anchors designed and installed for Advocate Lutheran General Hospital campus
• +4 more outcomes

Named customers15 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Goettsch PartnerscoreStrategic or Co-development PartnerArchitectural firm and repeat collaborator on multiple major projects including Chicago Union Station Great Hall Restoration, Chicago Union Station Clinton Street Adaptive Reuse, and 1 Astellas Way pharmaceutical headquarters. K&H provides structural engineering services in close collaboration with Goettsch Partners' design teams.
• Thornton TomasetticoreStrategic or Co-development PartnerStructural engineering consultancy collaborating with K&H on the Chicago Shakespeare Theater Yard transformation project. Thornton Tomasetti was part of the collaborative team including Adrian Smith Gordon Gill, Charcoal Blue, and others for the movable seating tower structural engineering work.
• WRNS StudiominorStrategic or Co-development PartnerArchitecture firm for a confidential 11-story, 209,000 SF tenant buildout project at a 35-story building. K&H served as Structural Engineer of Record for the project including multi-level communicating stairs, rooftop dunnage, and mezzanine for mechanical equipment.
• Moody Nolan ArchitectsminorStrategic or Co-development PartnerArchitecture firm for the Friend Health healthcare clinic project in Chicago's south side. K&H provided structural engineering for the conversion of an existing retail store into a two-story health clinic including canopy design and foundation solutions.
• Ferry and Clas ArchitectsminorStrategic or Co-development PartnerHistoric architectural firm referenced for The Cudahy Condominiums project. The building was originally designed by Ferry and Clas (1908-1909) and K&H performed condition assessment and restoration design services for this Milwaukee landmark.

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Wiss, Janney, Elstner Associates (WJE): Northbrook, IL-headquartered engineering consultancy with a near-identical service portfolio to K&H: structural engineering, building enclosure consulting, condition assessments, historic preservation, and repair/rehabilitation. WJE is the closest direct peer in scale, scope, and specialization mix.
• Simpson Gumpertz & Heger (SGH): Waltham, MA-based structural engineering and building technology consulting firm with strong overlap in building enclosure, facades, historic preservation, and structural failure investigation. Comparable size and similar client base of building owners and architectural firms.
• Thornton Tomasetti: Global structural engineering consultancy with deep building enclosure, facade, and adaptive reuse practices. Listed as a K&H project collaborator (Chicago Shakespeare Theater) and overlaps in mission-critical and historic preservation work, though materially larger in scale.
• Severud Associates: New York-based structural engineering consultancy with comparable focus on innovative structural design, building investigations, and restoration/adaptive reuse of existing structures; similar sized firm with overlapping service mix.
• DeSimone Consulting Engineers: Structural engineering consultancy with offices in New York, Miami, San Francisco, and Latin America providing structural design, facade consulting, and restoration services to building owners and architects on similar project types to K&H.
• Walter P Moore: Houston-headquartered structural engineering and diagnostics firm with practices in building enclosure, restoration, and structural design; comparable service lines and similar institutional and commercial client base.
• Rathswohl & Associates / Walker Consultants: Engineering firm specializing in building restoration, structural evaluation, and parking structure consulting with overlap in condition assessments and repair design for institutional and commercial clients; comparable regional firm profile.
• CTLGroup (formerly Construction Technology Laboratories): Skokie, IL-based engineering consulting and applied science firm with strong overlap in structural evaluation, materials science, concrete repair/rehabilitation, and building enclosure performance; close geographic and capability match.

Broad incumbents

• Buro Happold: Global engineering consultancy with structural engineering, building services, and facade consulting practices serving similar institutional and commercial clients; broader portfolio including MEP and sustainability, and much larger scale than K&H.
• WSP Global: Global professional services firm with structural engineering, building enclosure, and restoration practices that directly overlap with K&H; competing on large institutional and commercial commissions at a substantially larger scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Klein and Hoffman