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  • Who We Are

    Our Story

    We are a family of builders building amazing spaces across the US, Canada, UK, Ireland, and the Netherlands.

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    History

    Founded in 1971, we have grown into an organization made up of over 5,700 employees across 54 offices.

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    • Safety
    • Innovation
    • Quality
    • Compliance
    • Awards
    • Corporate Responsibility
  • What We Do

    Projects

    ST. PATRICK`S CATHEDRAL

    St. Patrick’s Cathedral, a New York City landmark building and one of the most revered Catholic Churches in the United States, underwent a major restoration and conservation project.

    Learn More about this project >
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    Sectors

    Our Focus Areas

    • Aviation
    • Broadcast-Media
    • Building Repositioning
    • Corporate Base Building
    • Corporate Interiors
    • Corrections
    • Cultural/Religious
    • Education
    • Financial
    • Government
    • Healthcare
    • Hospitality
    • Industrial
    • Justice
    • Law
    • Life Sciences
    • Mission Critical
    • Multi-Unit Residential
    • Public Safety
    • Retail
    • Sports & Entertainment
    • Technology
    View all Sectors >

    Expertise

    • Building / Site Evaluation
    • Construction Management
    • Construction Procurement Solutions
    • Elevator Construction Consultants
    • Enterprise Solutions
    • Facilities Construction Services
    • Mass Timber Construction
    • Preconstruction
    • Sustainability & Wellness
    • Technology & Innovation
    • Virtual Design & Construction
    Learn more about our Expertise >
  • People

    Careers

    No matter the type of project, complexity or client, one thing remains constant—people do the work. Learn more about our career opportunities.

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    Leadership

    Meet the experts who lead our people and organization.

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    Community

    We care about each other and are committed to making a positive impact where we live and where we work.

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  • News

    STOBG In The News

    Stay informed and stay connected. View the latest company announcements, employee achievements, and leadership highlights.

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    STOBG Insights Magazine

    Get inspired by the latest issues on project renovations, designs, company commemorations, and collaborations.

    • Read the Magazine>
    More News >

    STOBG Podcast

    Connect and listen to construction professionals and leaders one conversation at a time.

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    Thought Leadership

    What’s next in construction? From trends to data, find out more from our experts.

    Learn More >
  • Companies
    • Abbott Construction
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    • Ajax
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    • BCCI
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    • Govan Brown
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    • Layton
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    • LF Driscoll
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    • STOMC
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    • Pavarini Northeast
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    • Pavarini McGovern
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    • RC Andersen
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    • Structure Tone
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    • Structure Tone International
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    • Structure Tone Southwest
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  • Contact
  • Find Us
  • WHO WE ARE
    • Our Story
    • History
    • Safety
    • Innovation
    • Quality
    • Compliance
    • Awards
    • Corporate Social Responsibility
  • WHAT WE DO
    • Projects
    • Sectors
      • Broadcast & Media
      • Building Repositioning
      • Corporate Base Building
      • Corporate Interiors
      • Corrections
      • Cultural/Religious
      • Education
      • Financial
      • Government
      • Healthcare
      • Hospitality
      • Industrial
      • Justice
      • Law
      • Life Sciences
      • Mission Critical
      • Multi-Unit Residential
      • Public Safety
      • Retail
      • Sports & Entertainment
      • Technology
    • Expertise
      • Building Repositioning
      • Building / Site Evaluation
      • Commissioning
      • Construction Management
      • Construction Procurement Solutions
      • Elevator Construction Consultants
      • Facilities Construction Services
      • Mass Timber
      • Preconstruction
      • Sustainability & Wellness
      • Technology & Innovation
  • PEOPLE
    • Careers
      • Apply
    • Leadership
    • Community
  • News
    • STOBG Insights
    • STOBG In The News
    • Podcast
    • Thought Leadership
  • Companies
    • Abbott Construction
    • Ajax Building Company
    • BCCI Construction
    • Govan Brown
    • Layton Construction
    • LF Driscoll
    • STO Mission Critical
    • Pavarini North East
    • Pavarini McGovern
    • RC Andersen
    • Structure Tone
    • Structure Tone International
    • Structure Tone Southwest
  • Contact
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Awards | STO Building Group (STOBG)
STO Building Group (STOBG) has earned over 65 awards for our work in design, sustainability, and safety. STO Building Group (STOBG) is able to procure the best materials and talent, no matter the location. We promise our clients the highest quality services for the lowest possible cost.
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Awards
0606023 STOBG Awards Banner Website V2

Top Awards

ENR 01

#3 on ENR's Top 400 Contractors (2026)

STO Building Group (STOBG)

Engineering News-Record (ENR)

AZ Big Media

General Contractor of the Year (2026)

Layton Construction, Phoenix, AZ

AZ Big Media

USA Today Logo

Top Workplaces (2025)

Ajax Building Company

USA Today

NJBIZ

Leader in Real Estate, Construction and Design Awards (2025)

L’Oréal Research & Innovation (R&I) Center, Clark, NJ

NJBIZ

2026 Awards

Large Corporate Office

KPMG US Headquarters, New York, NY

NYCxDESIGN Awards

Award of Merit, Educational Facilities – $10 - $20M

Eastern Florida State College Center for Innovative Technology Education (CITE), Melbourne, FL

ABC Central Florida

Best Project, Sports/Entertainment

Utah Mammoth Ice Center, Sandy, UT

ENR Mountain States

Award of Merit, Healthcare

West Marion Community Hospital Vertical Tower Expansion, Ocala, FL

ENR Southeast

Best Project, Office/Retail/Mixed-Use

The Maeve and ANOVA Central Station, Phoenix, AZ

ENR Southwest

Lifestyle Development Project of the Year

The Maeve and ANOVA Central Station, Phoenix, AZ

NAIOP, Arizona Chapter

Best Places to Work

Structure Tone Southwest

Austin Business Journal

General Contractor of the Year

Layton Construction, Phoenix, AZ

AZ Big Media

People's Choice Award

Bain & Company, Boston, MA

CoreNet Global, New England Chapter

Excellence in Safety Award

BCCI Construction

Construction Employers' Association (CEA)

Honoree, Medium Corporate Office

Clifford Chance, New York, NY

NYCxDESIGN Awards

Best Project, Residential/Hospitality

SoMA at 25 Water Street, New York, NY

ENR New York

Best Project, Residential/Hospitality

The Nest at Snowbird, Snowbird, UT

ENR Mountain States

Award of Merit, Sports/Entertainment

University of Utah Charlie Monfort Field at America First Ballpark, Salt Lake City, UT

ENR Mountain States

Best Project, Office/Retail/Mixed-Use

The Maeve and ANOVA Central Station, Phoenix, AZ

ENR Southwest

Award of Merit, Residential/Hospitality

Sol Modern, Phoenix, AZ

ENR Southwest

Build-to-Suit/Spec Industrial Project of the Year (Greater than 500k SF)

Park303 Phase II, Glendale, AZ

NAIOP, Arizona Chapter

Design & Construction of a New Facility: Greater than 200K SF

Walt Disney World Company, 7 Hudson Square, New York, NY

IFMA Greater New York City Chapter

Industrial Project of the Year

Luke Field, Glendale, AZ

AZ Big Media

Best New Workplace–Large

The LEGO Group U.S. Headquarters, Boston, MA

CoreNet Global, New England Chapter

Eagle Award, Pre-engineered Buildings – $20 - $50M

Sumter County Government Center & Fire Training Facility, Sumterville, FL

ABC Central Florida

Safety Award of Merit

Shreiber School of Veterinary Medicine and Translational Research Tower at Rowan University, Mullica Hill, NJ

ENR New York

Best Project, Cultural/Worship

America First Performing Arts Center at Utah Tech University, St. George, UT

ENR Mountain States

Best Project, Healthcare

Medical City Dallas - Heart & Spine Hospital Vertical Expansion, Dallas, TX

ENR Texas

Award of Merit, Interior/Tenant Improvement

Gen Digital, Tempe, AZ

ENR Southwest

Award of Merit, Interior/Tenant Improvement

Bain & Company, Boston, MA

ENR New England

Build-to-Suit/Spec Office Project of the Year

Fender Co-Headquarters, Phoenix, AZ

NAIOP, Arizona Chapter

Hawaiʻi’s Best Workplaces

Layton Construction

Pacific Business News

Mixed-Use Project of the Year

The Maeve and ANOVA Central Station, Phoenix, AZ

AZ Big Media

Honor Awards, Jury's Choice

Jagalchi, Daly City, CA

IIDA Northern California Chapter

2025 Awards

Fastest Growing Private Companies

Abbott Construction

Pugent Sound Business Journal

New Construction Over $50 Million

University of Pennsylvania Vagelos Laboratory for Energy Science and Technology, Philadelphia, PA

General Building Contractors Association (GBCA)

Best Spec Industrial Project Under 500,000sf

Caliber by Greystar, Phoenix, AZ

NAIOP, Arizona Chapter

Excellence in Construction; Renovation > $4 to $10 Million

Kitchen Bistro, Austin, TX

ABC Central Texas

Best Project, Office/Retail/Mixed-Use

Esplanade, Phoenix, AZ

ENR Southwest

Best Project, Cultural/Worship

The Ruth and Nathan Hale Theater at doTERRA, Pleasant Grove, UT

ENR Mountain States

Award of Merit, Higher Education/Research

University of Georgia (UGA) Holmes-Hunter Academic Building Renovation, Athens, GA

ENR Southeast

Project Safety Award

Princeton University Art Museum-Marquand Phase 2 Demolition, Princeton, NJ

General Building Contractors Association (GBCA)

Project Safety Award

Pennsylvania Hospital, Farm Journal Infusion Pharmacy, Philadelphia, PA

General Building Contractors Association (GBCA)

Diamond Achievement of Safety Excellence Award

Layton Construction, Sandy, UT

Associated General Contractors of Utah

Premier Design Award–Corporate Office (45,001-75,000sf)

Robinson+Cole, Stamford, CT

International Interior Design Association (IIDA)

Top 25 Prime Contractors, Subcontractors and Supplier Diversity Champions

Layton Construction, Houston, TX

Subcontractors USA-Texas

Best Places to Work – Medium Category

Structure Tone, Boston, MA

Boston Business Journal

Healthcare Design Award

Jefferson Health Honickman Center, Philadelphia, PA

American Institute of Architects (AIA)

Construction Safety Excellence Awards–Construction Management, Over 1 Million Work Hours

Layton Construction

Associated General Contractors of America (AGC)

AZRE Awards, Hospitality

Caesars Republic Scottsdale, Scottsdale, AZ

AZ Big Media

AZRE Awards, Redevelopment

Esplanade Repositioning, Phoenix, AZ

AZ Big Media

Architectural Award in Preservation

Brunswick Court Historic Renovation, Pasadena, CA

Los Angeles Business Council (LABC)

New Construction $15-$50 Million

3935 Walnut Street, Philadelphia, PA

General Building Contractors Association (GBCA)

Concrete Award, Low-Rise Buildings/Structures

The NOW, West Hollywood, CA

American Concrete Institute Southern California Chapter

Contractor of the Year

Layton Construction, Phoenix, AZ

ENR Southwest

Best Project, Healthcare

Sage Memorial Hospital, Gando, AZ

ENR Southwest

Award of Merit, Higher Education/Research

L’Oréal Research & Innovation (R&I) Center, Clark, NJ

ENR New York

Best Project, Interior/Tenant Improvement

HB Workplaces Office Headquarters, Draper, UT

ENR Mountain States

New Project Award, Commercial/Other Over 40,000sf or Less

Kapalua Village Temporary Housing, Maui, HI

Hawaii Business Magazine

Project Safety Award

Pennsylvania Hospital, Interventional Neurosurgery CT, Philadelphia, PA

General Building Contractors Association (GBCA)

Project Safety Award

Cobbs Creek Foundation, TGR Learning Lab, Philadelphia, PA

General Building Contractors Association (GBCA)

Project Safety Award

Pennsylvania Hospital, Procedure Room, Philadelphia, PA

General Building Contractors Association (GBCA)

Awards for Excellence in Development, Excellence in Office Development

Google St. John's Terminal, New York, NY

Urban Land Institute (ULI), New York Chapter

Landmark Awards, Headquarters Move

Norton Rose Fulbright, Houston, TX

Houston Business Journal

Contractor of the Year

Layton Construction

AZ Big Media

Excellence in Construction

Malachowsky Hall – UF Data Science & Information Technology Building, Gainesville, FL

Associated Builders and Contractors (ABC) National

AIANY Design Awards, Citation for Innovation in Preservation

TSX Broadway/Palace Theater Redevelopment, New York, NY

AIA New York City Chapter

Green Energy Architecture

Vagelos Innovation Laboratories at Columbia University, New York, NY

Good Design

Outstanding Airport/Port Project

Port of Long Beach Lowenthal Global Trade & Education Center, Long Beach, CA

ASCE Los Angeles Section

General Contractor of the Year

Layton Construction, Phoenix, AZ

NAIOP, Arizona Chapter

Award of Merit, Energy/Industrial

Project Murphy, Central Point, OR

ENR West

Best Project, Office/Retail/Mixed-Use

Esplanade, Phoenix, AZ

ENR Southwest

Award of Merit, Safety

L’Oréal Research & Innovation (R&I) Center, Clark, NJ

ENR New York

Award of Merit, Office/Retail/Mixed-Use

The Offices at Southstone Yards, Frisco, TX

ENR Texas-LA

Award of Merit, Office/Retail/Mixed-Use

The LEGO Group U.S. Headquarters, Boston, MA

ENR New England

Best Project, Small Project

Galen College of Nursing-Orlando Campus, Orlando, FL

ENR Southeast

Project Safety Award

Calder Gardens, Philadelphia, PA

General Building Contractors Association (GBCA)

Project Safety Award

Hospital of the University of Pennsylvania, Dulles 4 Endoscopy, Philadelphia, PA

General Building Contractors Association (GBCA)

Project Safety Award

Pennsylvania Hospital, Interventional Neurosurgery CT, Philadelphia, PA

General Building Contractors Association (GBCA)

Project Safety Award

Children's Hospital of Philadelphia, Main 4 - OR Boom and Blanket Replacement, Philadelphia, PA

General Building Contractors Association (GBCA)

Leader in Real Estate, Construction and Design Awards

L’Oréal Research & Innovation (R&I) Center, Clark, NJ

NJBIZ

Green Energy Architecture

Vagelos Innovation Laboratories at Columbia University, New York, NY

Good Design

Awards for Excellence in Development, Excellence in Adaptive Reuse

Google Pier 57, New York, NY

Urban Land Institute (ULI), New York Chapter

Lucy G. Moses Preservation Award

TSX Broadway/Palace Theater Redevelopment, New York, NY

The New York Landmarks Conservancy

AZRE Awards, Industrial (more than 1,100,000sf)

Hub @ 202, Mesa, AZ

AZ Big Media

2024 Awards

Best Project, Judge's Choice Award

Malachowsky Hall – UF Data Science & Information Technology Building; Gainesville, FL

Urban Land Institute (ULI), North Florida Chapter

Best Project, Energy/Industrial

Puma at 303 Crossroads, Phoenix, AZ

ENR Southwest

Best Project, Interior/Tenant Improvement

Google St. John’s Terminal, New York, NY

ENR New York

Award of Merit, Office/Retail/Mixed-Use

Traeger Grills Corporate Headquarters Relocation & Expansion, Salt Lake City, UT

ENR Mountain States

Best Tilt-Up Safety, General Contractor 750K Work Hours or Greater

Structure Tone Southwest

Tilt-Up Concrete Association

Award of Merit, Institutional $20 - $50M

Monroe County Emergency Operations Center (EOC), Marathon, FL

ABC Central Florida

Honors Award, Commercial & Mixed Use Category

TSX Broadway & Palace Theater Redevelopment, New York, NY

Concrete Reinforcing Steel Institute (CRSI)

Award of Merit

15 Laight Street, New York, NY

Society of American Registered Architects (SARA)

Finalist, Tech Office

Amazon Project Hank, New York, NY

NYCxDesign

Large Creative Office

Charter Communications, Stamford, CT

NYCxDesign

Commercial Amenity Space

Mutual of America, New York, NY

NYCxDesign

Industrial BTS of the Year

Puma at 303 Crossroads, Phoenix, AZ

NAIOP, Arizona Chapter

Office Project of the Year

Avanti Windows and Doors Headquarters, El Mirage, AZ

AZ Big Media

Lucy G. Moses Preservation Project Award

Amazon–Project Hank, New York, NY

The New York Landmarks Conservancy

Best Project, Judge's Choice Award

Malachowsky Hall – UF Data Science & Information Technology Building; Gainesville, FL

Urban Land Institute (ULI), North Florida Chapter

Award of Merit, Government/Public Building

East Valley Animal Care Center, Mesa, AZ

ENR Southwest

Excellence in Safety Award

Google St. John’s Terminal, New York, NY

ENR New York

Award of Merit, Higher Education/Research

Malachowsky Hall – UF Data Science & Information Technology Building; Gainesville, FL

ENR Southeast

Project of the Year

Google St. John’s Terminal, New York, NY

Regional Plan Association (RPA)

Top Education Project Award

Hofstra University's Science & Innovation Center, Hempstead, NY

Long Island Business News Real Estate, Architecture & Engineers

Finalist, Tech Office

Fiserv Tech Innovation Center, Berkeley Heights, NJ

NYCxDesign

Graphics & Branding

Google St. John's Terminal, New York, NY

NYCxDesign

Iconic Project, Commercial Lobby

Bell Works, Holmdel, NJ

NYCxDesign

Construction Achievement Award

TSX Broadway/Palace Theater Redevelopment, New York, NY

Metropolitan Section of ASCE (American Society of Civil Engineers)

Lucy G. Moses Preservation Award

The Lever House, New York, NY

The New York Landmarks Conservancy

Recreation and Public Works Project of the Year

Southeast Justice Center and Adult Probation, Maricopa County, AZ

AZ Big Media

Contractor of the Year

Layton Construction, Sandy, UT

Associated General Contractors of Utah

Awards for Excellence, Public Sector/Non-Profit

Rutledge Pearson Elementary School, Jacksonville, FL

Urban Land Institute (ULI), North Florida Chapter

Project of the Year–Over 300,000 Square Feet

Google St. John's Terminal, New York, NY

CoreNet Global, New York City Chapter

Best Project, Small Project

Three Cairns Group, New York, NY

ENR New York

Award of Merit, Institutional $100 - $250M

Malachowsky Hall – UF Data Science & Information Technology Building; Gainesville, FL

ABC Central Florida

Tech Office

Google St. John's Terminal, New York, NY

NYCxDesign

Iconic Project, Retail

Apple Fifth Avenue Flagship, New York, NY

NYCxDesign

Small Corporate Office

Three Cairns Group, New York, NY

NYCxDesign

Economic Impact of the Year

Yuma 143 (Airport Gateway South), Goodyear, AZ

NAIOP, Arizona Chapter

Spec Industrial of the Year

Park303 Phase II, Glendale, AZ

NAIOP, Arizona Chapter

2024 Preservation Award

Amazon–Project Hank, New York, NY

The Victorian Society in America

Industrial Project of the Year (Over 1M SF)

Puma at 303 Crossroads, Phoenix, AZ

AZ Big Media

John T. White Leadership Award

Structure Tone, New York, NY

NYC Building and Construction Industry Safety Fund

Entrepreneur of the Year

David S. Layton, President & CEO–Layton Construction

MountainWest Capital Network

Our Awards Affiliates
AZ Big Media
Engineering News-Record Logo
CoreNet Global Logo
SMPS Society for Marketing Professional
Indus 5
NAIOP Arizona Chapter
ABC North Florida Logo
Tilt Up Concrete Association
Utah Construction & Design Logo
Building Design + Construction
Associated Builders & Contractors (ABC), Central Texas Chapter
Healthcare Design Magazine Logo
TEXO Logo
PWC Logo
Associated Builders and Contractors, Georgia

Our Family of Builders

  • Abbott Construction
  • Ajax
  • BCCI
  • Govan Brown
  • Layton Construction
  • LF Driscoll
  • STO Mission Critical
  • Pavarini North East
  • Pavarini McGovern
  • RC Andersen
  • Structure Tone
  • Structure Tone International
  • Structure Tone Southwest

Who We Are

  • Our Story
  • History
  • Leadership
  • Corporate Responsibility

Helpful Links

  • Careers
  • Projects
  • Sectors
  • Expertise
  • Subcontractors
  • CMiC Partner Collaboration Portal
  • Modern Slavery Statement

Industry Insights

  • Insights Magazine
  • Podcast
  • Thought Leadership

Contact Us

Locations

Business Development
bd@stobuildinggroup.com
Careers
careers@stobuildinggroup.com
Press
press@stobuildinggroup.com

STO Building Group (STOBG) is a Family of Builders.

STO Building Group (STOBG) is a leader in commercial construction management. We draw on each other’s strengths to deliver expert services in preconstruction, sustainable construction, virtual design and construction, and more.

 

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