What DeSimone Consulting Engineers does

DeSimone Consulting Engineers is a privately held structural engineering consultancy founded in 1969 in New York City, now operating from 16 offices across North America, South America, and Europe with 501-1,000 employees. The firm provides structural design, façade and building envelope consulting, restoration, forensics, structural detailing, vertical transportation, fabricated steel procurement, and project advisory services, with specialized expertise areas in wind engineering, vibration analysis, tilt-up, timber, sustainability, resiliency, and fabrication-ready BIM modeling at LOD 400. Its signature offering, Single Source Steel, integrates engineering design, detailing, and steel procurement under a single oversight model with AISC-certified fabrication partners, delivering schedule reductions of up to 30% relative to traditional design-bid-build delivery.

The firm's revenue model is project-based professional services fees, with each engagement priced on scope, complexity, and scale. DeSimone serves enterprise clients directly, primarily real estate developers, architects, and property owners on complex large-scale construction projects. Named clients include Related, Vornado, OKO/Cain, Swire, Rabina, Fortis, and UBS/Credit Suisse, with a portfolio spanning supertall residential towers, Class A+ office buildings, hospitality developments, adaptive reuse conversions, and cultural institutions. The brand is anchored on high-profile signature projects including the IAC Headquarters (Frank Gehry), 520 West 28th (Zaha Hadid), and Deansgate Square.

The firm is led by Chairman and CEO Stephen DeSimone and is deliberately positioning itself as an independent alternative to consolidating large engineering practices. Growth has been executed through a combination of organic expansion into new verticals (data centers, healthcare, aviation), geographic buildout (UK regional HQ, Hebden Bridge, Medellín, Santiago), and targeted acquisitions (DP Squared in 2023, KP Elevator Consulting in 2025). The firm marked its evolution from a structural engineering firm to a multi-service global consultancy with a November 2025 rebrand under the tagline 'Bridging science and humanity.'

Name

DeSimone Consulting Engineers

Legal name

DeSimone Consulting Engineering, DPC

Website

https://de-simone.com

Company type

Private

Founded year

1969

Operating status

Operating

Headcount range

501–1,000 employees

Short description

DeSimone Consulting Engineers is a private structural engineering consultancy founded in 1969 and operating from 16 offices across the US, UK, Canada, Colombia, and Chile, serving enterprise developers, architects, and property owners on tall buildings, complex architecture, and adaptive reuse projects.

Ownership category

akta.pro rank

Product category

Structural Engineering Services

NAICS

Engineering Services (541330), Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

akta.pro secondary industry

Construction Engineering & Constructability Consulting (BPAHAIAN)

Keywords

• Structural engineering services
• Façade consulting
• Building envelope engineering
• Vertical transportation consulting
• Structural forensics

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices16 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Consulting Services: Professional engineering fees for structural design, façade consulting, vertical transportation, forensics, restoration, and advisory services on construction projects.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

DeSimone Consulting Engineers is a global structural engineering consultancy providing structural design, façade and building envelope consulting, restoration, forensics, structural detailing, vertical transportation, fabricated steel procurement, and advisory services. The firm serves developers, architects, and property owners on complex high-rise, commercial, hospitality, cultural, and adaptive reuse construction projects across North America, South America, and Europe.

Product overview

DeSimone Consulting Engineering is a global structural engineering consultancy offering a comprehensive portfolio of services centered on structural design and building engineering. Founded in 1969, the firm has evolved from its origins as a structural engineering firm into a multi-service consultancy providing Structural Design, Façade and Building Envelope, Restoration, Forensics, Structural Detailing, Vertical Transportation, Fabricated Steel Procurement, and Advisory services. The company operates across three continents with 16 offices and specializes in complex high-rise residential, commercial, hospitality, and infrastructure projects. Its expertise areas include Sustainability, Resiliency, Timber, Vibration and Wind, Tilt-up Engineering, Fabrication-Ready Modeling, and Single Source Steel—a distinctive integrated offering that combines structural engineering, detailing, and fabricated steel procurement under single oversight. The firm is known for engineering technically challenging structures including supertall towers, adaptive reuse projects, and buildings with complex geometries.

Differentiator

Problem solved

Functional benefit

Products and services

• Structural Design Core structural engineering services for buildings of all types and heights, including design of structural systems, load analysis, and construction-phase support for developers, architects, and property owners.
• Façade and Building Envelope Consulting services for building enclosure design, including curtain walls, window systems, and exterior cladding to ensure weather resistance and aesthetic performance for complex building projects.
• Restoration Structural restoration and rehabilitation services for existing buildings, including assessment, repair design, and strengthening of aging or damaged structures.
• Forensics Engineering investigation and analysis services for structural failures, damage assessment, and expert witness support for legal proceedings.
• Structural Detailing Detailed engineering drawings and models for steel and concrete structural components, including fabrication-ready modeling at LOD 400.
• Vertical Transportation Design and consulting for elevators, escalators, and other vertical transportation systems in buildings.
• Fabricated Steel Procurement Integrated steel procurement services including coordination with fabricators, quality oversight, and delivery management as part of the Single Source Steel offering.
• Advisory Project advisory services providing strategic consultation on construction projects, risk management, and technical guidance throughout project delivery.
• Single Source Steel Integrated structural steel solution combining engineering design, detailing, and fabricated steel procurement under single oversight, enabling schedule reduction of up to 30% over traditional design-bid-build delivery.
• Tilt-up Engineering Specialized structural engineering for tilt-up concrete construction methods.
• Resiliency Design Design services focused on building resilience against extreme weather, flooding, and other environmental hazards.
• Timber Engineering Structural engineering services for mass timber and wood-frame construction projects.
• Fabrication-Ready Modeling BIM-based modeling services producing fabrication-ready models at LOD 400, enabling seamless transition from design to fabrication.

Named customers17 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

One partnership is on record.

• AISC-certified fabricatorscoreOthersDecades of established working relationships with select AISC-certified fabricators for steel structure projects. DeSimone meticulously chooses the best fabrication alliance member to meet unique project requirements, ensuring steel delivered to site is fabricated with highest craftsmanship.

Scale indicators2 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• WSP: Global professional services firm with extensive structural and building engineering practices following acquisitions of Parsons Brinckerhoff and Weidlinger Associates. Competes for large enterprise mandates and bundled services.
• Arup: Global engineering consultancy with full structural, façade, vertical transportation, and advisory capabilities. Competitor on large integrated commissions; broader and more diversified than DeSimone.

Direct peers

• Thornton Tomasetti: Global structural engineering consultancy with deep high-rise and complex-geometry expertise. Directly competes with DeSimone on supertall, mixed-use, and adaptive reuse projects in New York, Miami, and London.
• Walter P Moore: Structural and civil engineering firm with comparable size and focus on sports, convention, healthcare, and high-rise buildings. Overlaps with DeSimone on complex structural design and building envelope work.
• Wiss, Janney, Elstner Associates: Engineering firm specializing in structural investigation, restoration, and forensics. Strong overlap with DeSimone's restoration and forensics service lines and similar client base of building owners and REITs.
• Magnusson Klemencic Associates: Structural and civil engineering consultancy known for high-rise and complex geometry work. Comparable to DeSimone on tall residential and commercial buildings, with similar size and project profile.
• Buro Happold: International engineering consultancy with strong structural, façade, and building performance practices. Closely comparable to DeSimone on complex architectural projects and integrated multi-disciplinary delivery.
• Severud Associates: Long-established New York structural engineering firm with similar high-rise and complex geometry focus. Head-to-head competitor with DeSimone on NYC luxury residential and commercial towers.
• Skidmore, Owings & Merrill (SOM): Integrated architecture, engineering, and urban design firm with in-house structural engineering. Competes on signature towers and complex architectural projects where architect-engineer collaboration is tightly coupled.

Emerging players

• Cosentini Associates: Engineering consultancy specializing in MEP and structural systems for high-performance buildings. Partial overlap with DeSimone on complex building projects and redevelopment work.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/desimone-consulting-engineers
• Instagraminstagram.com/desimoneengineers
• Xx.com/desimonegroup
• Facebookfacebook.com/desimoneconsultingengineers

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about DeSimone Consulting Engineers