What Conco Commercial Concrete Contractors does

Conco Commercial Concrete Contractors (legally Gonsalves & Santucci Inc.) is a privately held, vertically integrated commercial concrete contractor founded in 1959 and headquartered in Concord, California, operating under the direction of Owner & President Steve Gonsalves. The company delivers a full suite of concrete construction services — pre-construction design/build, digital construction, rebar fabrication and reinforcement, formwork, concrete pumping, finishing, and shotcrete — through a single-source "one call" model that eliminates the need for general contractors to coordinate multiple specialty subcontractors. It backs this delivery model with significant owned capital assets, including two state-of-the-art rebar fabrication facilities (Benicia, CA and Rochester, WA) and one of the largest concrete pumping and belt fleets in the U.S., supplemented by a proprietary cellular concrete product, ConFoam™.

The business is project-based and B2B, serving commercial real estate developers, general contractors, healthcare systems, public agencies, and hospitality/entertainment owners on large-scale commercial, institutional, and infrastructure projects across the Western U.S. Notable executed work includes the MSG Sphere at The Venetian, Salesforce Tower, Wilshire Grand Center, the LA Memorial Coliseum renovation, John Muir Walnut Creek, and the Stanford Medicine Sutter Health Cancer Center. Revenue is earned through custom-quoted, project-by-project contracts spanning both prime contracts and subcontracted scopes, with no public pricing and multi-year contract cadence typical of the segment.

Conco markets primarily through its project portfolio website, earned industry recognition (ACI, Pankow, UCON Safety awards), and direct regional sales offices across Northern California, Southern California, Oregon/SW Washington, Washington, and Denver. Customer relationships are anchored by repeat enterprise developers and institutional owners; the company emphasizes one-point accountability, safety leadership (including UCON Safety REAL Award at 1M+ man hours), and CALTRANS pre-qualification for hoop welding on infrastructure work. No external institutional investment, M&A activity, or public-market participation has been disclosed, and ownership remains with the Gonsalves founding family.

Name

Conco Commercial Concrete Contractors

Legal name

Gonsalves & Santucci Inc.

Website

https://conconow.com

Company type

Private

Founded year

1959

Operating status

Operating

Headcount range

251–500 employees

Short description

Conco is a privately held, vertically integrated commercial concrete contractor founded in 1959, serving general contractors and developers across the Western U.S. with rebar, pumping, formwork, finishing, and shotcrete services through owned fabrication facilities and one of the largest U.S. concrete pumping fleets.

Ownership category

akta.pro rank

Product category

Commercial Concrete Construction Services

NAICS

Poured Concrete Foundation and Structure Contractors (23811), Other Building Finishing Contractors (238390)

SIC

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

akta.pro primary industry

Commercial General Contracting (New Build) (IMAFAAAA)

akta.pro secondary industries

Concrete Equipment (Mixers, Pumps, Batching) (IMAHAAAK), Concrete Admixtures & Curing Compounds (IMADAAAL)

Keywords

• Commercial concrete construction
• Concrete pumping services
• Rebar fabrication installation
• Shotcrete application services
• Cellular concrete fill

Headquarters

HQ city

Anderson

HQ country

United States

HQ region

North America

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Commercial Concrete Construction Services: Conco generates revenue through providing comprehensive commercial concrete services on construction projects. Revenue is earned through project-based contracts for services including concrete pumping, rebar installation, formwork, finishing, shotcrete, and ConFoam application. Projects range from residential complexes to high-rise towers and infrastructure projects, with revenue derived from both prime contracts and subcontracted work with general contractors.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Conco Commercial Concrete Contractors is a vertically integrated commercial concrete contractor providing end-to-end concrete construction services from pre-construction design/build through finishing. Services include rebar fabrication and installation, concrete formwork, concrete pumping (one of the largest U.S. pumping fleets), shotcrete application, concrete finishing, and the proprietary ConFoam™ cellular concrete fill product, delivered through four regional offices across the Western United States.

Product overview

Conco Commercial Concrete Contractors operates as a single-source commercial concrete contractor offering an integrated suite of eight distinct but interconnected services spanning the full construction lifecycle. The core offerings include Pre-Construction Design/Build (professional design services), Digital Construction (integrated planning to closeout), Rebar/Concrete Reinforcement (with CALTRANS-certified hoop welding at two fabrication facilities), Concrete Formwork (using latest technologies), and Concrete Finishing. The proprietary ConFoam™ product (cellular concrete) serves as a specialized fill solution. Concrete Pumping and Shotcrete services handle material placement. The company operates as a vertically integrated 'one stop shop' model where a single call can secure all services from design through finishing.

Differentiator

Problem solved

Functional benefit

Brands

• ConFoam™: A proprietary cellular concrete product, also known as foam concrete, used as a lightweight engineered fill solution for various construction applications including void filling, roof deck fill, and trench bedding.

Products and services

• Pre-Construction Design/Build

Quantifiable outcome

• 14 mat pours in 9 weeks completed safely during peak season
• +3 more outcomes

Named customers9 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

Two partnerships are on record, tiered core and minor.

• Concrete Preservation InstitutecoreStrategic or Co-development PartnerConco partners with the Concrete Preservation Institute to help military veterans begin careers in the concrete industry. This partnership provides training and work transition opportunities for American military veterans, supporting workforce development in the construction industry.
• Silverstar Ready MixminorStrategic or Co-development PartnerPartnered for MSG Sphere project to develop specialized shotcrete and cast-in-place mix design meeting 0.02% shrinkage requirement. Multiple trial batches were performed adjusting aggregates and admixtures.

Scale indicators6 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• Baker Concrete Construction: Baker is the largest concrete specialty contractor in the United States, providing similar turnkey concrete services including foundations, slabs, formwork, rebar, and finishing on commercial, infrastructure, and industrial projects of comparable or larger scale than Conco.
• Lithko Contracting: Lithko is a national commercial concrete subcontractor offering pre-construction, foundations, slabs, walls, paving, and finishing services, directly comparable to Conco's one-stop-shop concrete contracting model across multiple U.S. regions.
• Concrete Strategies: Concrete Strategies is a commercial concrete subcontractor providing foundations, structural concrete, and preconstruction services on large commercial and industrial projects, mirroring Conco's integrated delivery model.
• TAS Commercial Concrete: TAS is a Texas-based commercial concrete subcontractor delivering foundations, slabs, tilt-wall, and structural concrete work with similar full-service turnkey positioning to Conco, though concentrated in the Texas market.
• Largo Concrete: Largo Concrete is a national commercial concrete specialty contractor serving general contractors and developers on high-rise, mixed-use, and infrastructure projects with comparable integrated scope to Conco.

Broad incumbents

• Sundt Construction: Sundt is a large general contractor with significant in-house concrete and structural capabilities serving commercial, industrial, and infrastructure clients across the Western U.S., overlapping with Conco in market and scope but operating from a broader GC position.
• McCarthy Building Companies: McCarthy is a large national general contractor with substantial concrete self-perform capabilities on healthcare, commercial, and infrastructure projects in the Western U.S., often competing with or using specialty concrete contractors like Conco.
• Webcor Builders: Webcor is a California-based general contractor with significant self-perform concrete work on commercial and high-rise projects in the same Bay Area and California markets where Conco operates as a specialty subcontractor.
• Shimmick Construction: Shimmick is a California-based heavy civil and commercial contractor with concrete placement and infrastructure capabilities, providing comparable Western U.S. exposure and overlapping with Conco on public works projects.
• Clark Construction Group: Clark is a national general contractor with substantial concrete self-perform operations on large commercial, healthcare, and infrastructure projects, frequently engaging in subcontractor relationships with concrete specialists comparable to Conco.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/concoconcrete
• LinkedInlinkedin.com/company/conco-commercial-concrete-contractors

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Conco Commercial Concrete Contractors