Old Structures Engineering

What Old Structures Engineering does

Old Structures Engineering is a privately held, founder-owned structural engineering consulting firm headquartered at 90 Broad Street, New York, specializing exclusively in the investigation, analysis, design, and construction administration of historic and existing buildings. Founded in 2008, the firm serves building owners, property managers, architectural firms, developers, government agencies, and nonprofit institutions across the New York metropolitan area, working on landmark structures such as Belvedere Castle (Central Park Conservancy), Public Bath No.7, Riverside Church, the T Building, and 285 Central Park West.

The firm's service stack is built around six integrated practice areas — Investigation, Context Review, Existing Conditions Analysis, Design, Feasibility Analysis, and Construction Administration — applied to older structural systems that predate modern building codes. Its competitive foundation is a ~13-person team of structural engineers with dual training in engineering and historic preservation, including staff with PhDs in structural engineering and advanced degrees from the University of Minho's Structural Analysis of Historical Constructions program, several of whom teach at Columbia University. The firm is B Corp certified and has received multiple Lucy Moses Preservation Awards from the New York Landmarks Conservancy.

Old Structures Engineering generates revenue through project-based professional services fees, secured primarily through direct relationships with building owners, developers, architects, and government agencies, and through referral partnerships with preservation-focused architectural firms such as John G. Waite Associates and Acheson Doyle Partners. Its go-to-market relies on reputation, award recognition, and an extensive editorial journal of more than 200 articles on structural engineering and historic preservation. The firm has no outside funding, no disclosed revenue figures, and operates from a single New York office.

Name

Old Structures Engineering

Legal name

Old Structures Engineering

Website

https://oldstructures.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

1–10 employees

Short description

Old Structures Engineering is a New York-based structural engineering consulting firm specializing in the investigation, analysis, and design of historic and existing buildings, serving building owners, architects, developers, and government agencies across the New York metropolitan area.

Ownership category

akta.pro rank

Product category

Structural Engineering Consulting

NAICS

Engineering Services (54133), Engineering Services (541330)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

akta.pro secondary industry

Load-Bearing Wall Removal & Structural Beam Installation (HSAPAFAB)

Keywords

• Structural engineering consulting
• Historic building preservation
• Adaptive reuse engineering
• Building condition assessment
• Restoration engineering services

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Structural Engineering Consulting Services: The firm provides structural engineering services for existing buildings including investigation, existing condition analysis, feasibility analysis, context review, design, and construction administration. Revenue is generated through professional consulting fees on a project basis.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Old Structures Engineering is a structural engineering consulting firm that provides specialized services for existing and historical buildings. Its core offerings include investigation (examining building conditions and structure), context review (comparing building structure to type conditions), existing conditions analysis (analyzing structure for safety and code compliance), design (repair, alteration, and addition design), feasibility analysis (analyzing proposed alterations), and construction administration (reviewing work during construction). These are delivered as integrated consulting engagements rather than discrete software products.

Product overview

Old Structures Engineering is a structural engineering consulting firm that provides specialized services for existing and historical buildings. The company offers a unified suite of consulting services rather than a software product platform. Their core service offerings include Investigation (examining building conditions and structure), Context Review (comparing building structure to type conditions), Existing Conditions Analysis (analyzing structure for safety and code compliance), Design (repair, alteration, and addition design), Feasibility Analysis (analyzing proposed alterations), and Construction Administration (reviewing work during construction). These services are provided as an integrated consulting engagement rather than discrete product modules.

Differentiator

Problem solved

Functional benefit

Products and services

• Structural Engineering Consulting Services

Quantifiable outcome

• Multiple Lucy Moses Preservation Awards received for outstanding preservation work in New York City
• +1 more outcomes

Named customers8 records

Segments3 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Two partnerships are on record, tiered core.

• John G. Waite Associates, ArchitectscoreStrategic or Co-development PartnerLong-standing collaborative partnership on pre-Revolution historic building projects. Firms have worked together on multiple historic preservation projects including Roslyn Grist Mill, Connetquot Mill, and Vander Ende-Onderdonk House. Partnership involves joint structural engineering and architectural services for very old building restoration.
• Acheson Doyle PartnerscoreStrategic or Co-development PartnerArchitectural partner on Terence Cardinal Cooke Hospital renovation project. OSE provided structural engineering services while Acheson Doyle Partners served as architects for the hospital modernization project.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Wiss, Janney, Elstner Associates (WJE): National engineering consultancy renowned for investigating and designing repairs for existing, historic, and failed structures. Most direct competitor to OSE — same service mix (investigation, analysis, repair design, construction administration for aging buildings) with a much larger footprint.
• Robert Silman Associates (now part of Structural Group): Historic structural engineering consultancy specifically focused on existing and historic buildings; now within Structural Group. Closest historical analog to OSE in specialty positioning and project type (landmarks, museums, adaptive reuse).
• Silman (a Structural Group company): Pure-play structural engineering practice for existing and historic buildings. Highly comparable to OSE in niche focus, service offering, and client type (architects, owners of landmark structures).
• Simpson Gumpertz & Heger (SGH): Engineering firm with a substantial existing-building and preservation practice alongside new-construction work. Overlaps with OSE in investigation, condition assessment, and repair design for historic structures.
• Walter B. Melvin Architects, LLC: Structural engineering consultancy with a stated focus on existing and historic buildings, including investigation and restoration design. Comparable boutique scale and specialty service profile to OSE.
• Severud Associates: NYC-based structural engineering consultancy with deep experience in preservation, restoration, and adaptive reuse of existing buildings — directly competing for the same NYC institutional and developer clients as OSE.
• DeSimone Consulting Engineers: Multi-office structural engineering firm with strong existing-buildings and restoration practice in the NYC market. Overlaps with OSE on landmark and adaptive-reuse projects at comparable scale.

Emerging players

• Higgins Quasebarth & Partners: NYC preservation planning and consulting firm working with owners, architects, and institutions on landmark properties. Adjacent service overlap to OSE in the NYC preservation ecosystem, though focused on planning/regulatory rather than structural engineering.
• Beyer Blinder Belle Architects & Planners: NYC architecture firm with a major historic preservation and adaptive-reuse practice; frequently partners with structural specialists (like OSE) on landmark projects. Comparable client base and project types though architectural rather than engineering.

Others

• John G. Waite Associates, Architects: Architectural firm specializing in historic preservation with a long-standing partnership with OSE on pre-Revolution buildings (Roslyn Grist Mill, Connetquot Mill, Vander Ende-Onderdonk House). Operates as an allied peer in the same preservation project ecosystem.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/old-structures-engineering

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles16 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 Old Structures Engineering