What Structure Tone does

Structure Tone is a New York-based general contracting and construction management firm founded in 1971, operating as the flagship brand of STO Building Group (STOBG), a privately held family of construction companies with more than 5,700 employees across 54 offices in the US, Canada, the UK, Ireland, and the Netherlands. The company delivers end-to-end construction services including preconstruction, construction management, general contracting, building repositioning, commissioning, virtual design and construction (VDC/BIM), mass timber construction, and sustainability and wellness advisory, targeting enterprise clients across 22 sectors spanning corporate interiors, technology, financial, law, healthcare, life sciences, mission critical, broadcast/media, and government. Structure Tone's core technology stack centers on Building Information Modeling and virtual design tools for project coordination, complemented by an enterprise software partnership with CMiC for project management workflows. Its go-to-market is direct-to-enterprise via a dedicated business development team ([email protected]), regional office coverage, and thought-leadership channels including STOBG Insights Magazine, the STOBG Podcast, and the STOBG The Word blog. Revenue is generated through professional-services fees tied to the more than $3.5 billion in annual construction volume the group manages, with pricing structured on a per-project basis via competitive bidding and multi-year contracts rather than standardized tiers.

Within the STO Building Group umbrella, Structure Tone sits alongside a portfolio of wholly owned subsidiary brands that preserve regional and sector specialization: Abbott Construction, Ajax (acquired October 2018), BCCI, Govan Brown (Canada), Layton Construction, LF Driscoll (including a healthcare-focused division), STO Mission Critical (STOMC), Pavarini Northeast, Pavarini McGovern, RC Andersen, Structure Tone International, and Structure Tone Southwest. This multi-brand architecture allows the group to compete across distinct geographies and verticals (e.g., western US via BCCI and Layton, Canada via Govan Brown, Europe via Structure Tone International, data centers via STOMC) while sharing back-office, procurement, and innovation resources at the parent level. The combined organization is ranked among the world's top 20 construction companies. Notable enterprise client engagements include Bank of America (Two Bryant Park Financial Center), Walt Disney Company (NYC headquarters), AllianceBernstein, Putnam Investments, LEGO, FanDuel, Edelman, Signify, and a major global law firm, demonstrating execution across financial, broadcast/media, technology, and professional services verticals.

Name

Structure Tone

Legal name

STO Building Group

Website

https://structuretone.com

Company type

Private

Founded year

1971

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Structure Tone, founded in 1971 and part of STO Building Group, is a US-based construction management and general contracting firm serving enterprise clients across corporate interiors, technology, financial, healthcare, and mission critical sectors in North America and Europe.

Ownership category

akta.pro rank

Product category

Commercial Construction Services

NAICS

Commercial and Institutional Building Construction (236220), Commercial and Institutional Building Construction (23622)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540), Construction - Special Trade Contractors (1700)

akta.pro primary industry

Office & Corporate Building Construction (IMAFACAA)

akta.pro secondary industries

Commercial Interior Fit-Out (Offices & Corporate) (IMAFANAA), Renovation, Remodeling & Tenant Improvements (General Contracting) (IMAFAAAE), Hospitality & Entertainment Venue Construction (IMAFACAC)

Keywords

• Commercial construction services
• Construction management
• General contracting
• Corporate interiors construction
• Preconstruction services

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices11 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Construction Management & General Contracting: Full-service construction management and general contracting for corporate interiors, building repositioning, and new construction projects. Revenue generated through project fees based on construction value managed.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Structure Tone delivers full-service construction management and general contracting for commercial interior fit-outs, building repositioning, mission-critical facilities, and new construction projects. Services span preconstruction planning, virtual design and construction (BIM/VDC), sustainable and mass timber construction, and commissioning, serving enterprise clients across technology, financial, healthcare, law, and life sciences sectors.

Product overview

Structure Tone is a global construction management and general contracting firm and the flagship brand of STO Building Group. The company offers a comprehensive suite of construction services organized around core capabilities (Construction Management, General Contracting, Virtual Design & Construction/VDC, Preconstruction, Building Repositioning, Commissioning, Sustainability & Wellness, Mass Timber Construction, and Enterprise Solutions) and sector specializations (Mission Critical, Healthcare, Technology, Life Sciences, Corporate Interiors). Structure Tone operates alongside a family of subsidiary brands including LF Driscoll, Pavarini McGovern, Govan Brown, STOMC, Abbott Construction, Ajax, BCCI, Layton, Pavarini Northeast, RC Andersen, Structure Tone International, and Structure Tone Southwest. The company also publishes the STOBG Insights Magazine and STOBG Podcast as thought leadership platforms. With over 5,700 employees across 54 offices in the US, Canada, UK, Ireland, and Netherlands, Structure Tone manages more than $3.5B in annual construction volume, positioning it among the world's top twenty construction companies.

Differentiator

Problem solved

Functional benefit

Products and services

• Construction Management Core construction management services overseeing project delivery from preconstruction through completion, including scheduling, budgeting, quality control, and coordination with subcontractors. Targeted at large enterprises, property developers, and institutional clients across multiple sectors.
• General Contracting Full-service general contracting for commercial interior and renovation projects, handling all construction activities from mobilization to project closeout. Targeted at commercial property owners and corporate tenants.
• Preconstruction Early-stage project planning and consulting services including feasibility analysis, cost estimation, scheduling, and constructability reviews. Targeted at corporate clients and developers evaluating new construction or major renovation projects.
• Virtual Design & Construction (VDC/BIM) Building Information Modeling (BIM) and virtual design construction services for planning, coordination, and visualization of construction projects. Targeted at enterprise clients and design teams requiring advanced digital coordination.
• Building Repositioning Services for transforming existing buildings through renovations, upgrades, and conversions to meet changing market demands. Targeted at property owners, developers, and asset managers seeking adaptive reuse or modernization.
• Commissioning Systems testing and verification services ensuring building systems perform as designed and meet operational requirements. Targeted at building owners and facility operators commissioning new or renovated facilities.
• Sustainability & Wellness Sustainable construction practices and wellness-focused building solutions including LEED certification support and green building initiatives. Targeted at corporate clients pursuing sustainability goals and wellness certifications.
• Mass Timber Construction Specialized mass timber construction services for sustainable, structurally efficient buildings using engineered wood products. Targeted at developers and corporate clients seeking sustainable structural solutions.
• Enterprise Solutions Integrated construction solutions for large-scale enterprise clients requiring coordinated multi-location or complex project delivery. Targeted at national and multinational corporations with multi-site construction programs.
• Mission Critical Construction Specialized construction services for data centers, technology facilities, and other mission-critical infrastructure requiring high reliability and redundancy. Targeted at data center operators, technology firms, and critical infrastructure owners.
• Healthcare Construction Construction services for healthcare facilities including hospitals, medical offices, and specialized treatment centers with strict regulatory compliance. Targeted at hospital systems, medical office operators, and healthcare providers.
• Corporate Interiors Construction Interior construction and renovation services for corporate offices including space planning, build-out, and repositioning. Targeted at corporate tenants and enterprise clients undertaking office fit-outs.
• Technology Sector Construction Construction services tailored for technology companies including corporate interiors, headquarters, and R&D facilities. Targeted at technology sector enterprises and R&D operators.
• Life Sciences Construction Construction for laboratories, research facilities, and pharmaceutical manufacturing requiring specialized cleanroom and containment systems. Targeted at pharmaceutical, biotech, and life sciences research organizations.

Quantifiable outcome

• Top 20 global construction company ranking
• +1 more outcomes

Named customers10 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• STO Building GroupcoreOthersStructure Tone is a founding operating company of STO Building Group, a global construction organization. The group includes multiple operating companies: Abbott Construction, Ajax, BCCI, Govan Brown, Layton, LF Driscoll, STOMC, Pavarini Northeast, Pavarini McGovern, RC Andersen, Structure Tone International, and Structure Tone Southwest.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Turner Construction Company: One of the largest commercial interior and general contracting firms in the US, with deep corporate interiors, healthcare, and mission critical practices — directly comparable to Structure Tone on services, customer profile, and project types.
• Gilbane Building Company: Privately held, family-founded construction manager and general contractor with comparable sector mix (corporate, healthcare, education, mission critical) and similar geographic spread across the US.
• Suffolk Construction: Privately held national contractor focused on commercial interiors, corporate base buildings, healthcare, and technology — directly competing with Structure Tone in the Northeast and selected growth markets.
• Whiting-Turner Contracting Company: Privately held national contractor with strong corporate interiors, technology, healthcare, and industrial practices — closely comparable to Structure Tone on customer profile and delivery model.
• Clark Construction Group: Large privately held general contractor/CM with a comparable mix of commercial interiors, healthcare, education, and mission critical work, often competing head-to-head on enterprise and institutional projects.
• Mortenson Construction: Privately held contractor with significant data center, healthcare, and corporate interiors practices — directly comparable on mission critical growth themes and sector mix.
• DPR Construction: National commercial contractor with strong corporate interiors, healthcare, life sciences, and mission critical/data center practices. Highly comparable on customer segments, technology adoption (BIM/VDC), and project delivery model.
• Holder Construction: Privately held national CM/GC with leading mission critical/data center and corporate interiors practices, overlapping Structure Tone in technology and corporate interior segments.

Broad incumbents

• Balfour Beatty US: US operations of Balfour Beatty, a global infrastructure and construction group with comparable corporate interiors, healthcare, and education practices, providing international and broad-line competition.
• Skanska USA: US arm of global contractor Skanska, competing with Structure Tone on commercial interiors and corporate base buildings while operating a broader civil and heavy infrastructure portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/Structuretone
• YouTubeyoutube.com/@STOBuildingGroup
• Facebookfacebook.com/StructureTone
• LinkedInlinkedin.com/company/structure-tone
• Instagraminstagram.com/stobuildinggroup

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries12 records

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 Structure Tone