What Blois Construction does

Blois Construction is a family-owned heavy civil contractor headquartered in Oxnard, California, specializing in underground infrastructure for public agencies, municipal water and wastewater utilities, and airport authorities across Southern California. Founded circa 1960, the company has been operating for over six decades under the leadership of President Jim Blois, with Steve Blois holding a senior role and a stable team of long-tenured engineers, superintendents, and operators (several with 20-35 years of service). The firm operates as both a prime contractor and a key specialty subcontractor, with project budgets typically exceeding $50 million. Service mix spans wet utility piping (sewer, water, storm drain), stormwater retention/detention/filtration, mechanical plant work (pump stations, lift stations, process piping up to 48-inch diameter and 22-feet deep), cast-in-place and precast concrete, dry utility duct banks, gas piping, shoring systems, paving, and site work, delivered with a unified portfolio of trenchless techniques including horizontal directional drilling, bore-and-jack, and micro-tunneling.

Revenue is generated through project-based construction contracts (one-time, multi-year engagements) secured via competitive bidding and direct negotiation. The go-to-market is enterprise field sales targeting government agencies, municipal utilities, airports, and general contractors, supplemented by subcontractor relationships with national design-build primes such as Jacobs, Kiewit, and Skanska. Pricing is not publicly disclosed and is determined per project, with multi-year contract cadences. Customer segments are organized vertically across Government and Municipal Agencies (primary), General Contractors and Construction Firms (primary), and Airport Authorities, with notable engagements including the Donald C. Tillman Advanced Water Purification Facility (45 MGD, 500,000+ residents), the $34M Hollywood Burbank Airport Passenger Terminal Replacement scope, and the VenturaWaterPure Ocean Outfall Project. Marketing is relationship-driven, relying on industry awards (multiple AGC safety recognitions at regional and national level from 2014-2024), a website portfolio of featured projects, client testimonials, and active industry association participation rather than paid digital channels.

Name

Blois Construction

Legal name

Blois Construction, LLC.

Website

https://bloisconstruction.com

Company type

Private

Founded year

1960

Operating status

Operating

Headcount range

101–250 employees

Short description

Blois Construction is a family-owned, Southern California heavy civil contractor founded circa 1960, specializing in underground wet/dry utility piping, stormwater systems, mechanical plant work, and trenchless installation for municipal water agencies, airport authorities, and general contractor primes on projects typically exceeding $50 million.

Ownership category

akta.pro rank

Product category

Heavy Civil Construction

NAICS

Water and Sewer Line and Related Structures Construction (237110), Utility System Construction (2371), Heavy and Civil Engineering Construction (237)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Heavy Construction Other Than Bldg Const - Contractors (1600)

akta.pro primary industry

Water & Wastewater Pipeline Construction (Mains, Force Mains, Interceptors) (IMAFAGAC)

akta.pro secondary industries

Stormwater & Drainage Infrastructure Construction (Sewer, Detention, Outfalls) (IMAFAGAF), Storage & Conveyance Structures (Reservoirs, Tanks, Culverts, Tunnels) (IMAFAGAE), Trenching & Utility Excavation (IMAFAKAD)

Keywords

• Underground utility construction
• Wet utility piping
• Heavy civil construction
• Horizontal directional drilling
• Storm drain systems

Headquarters

HQ city

Oxnard

HQ country

United States

HQ region

North America

Offices1 record

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. Heavy Civil Construction Services: Blois Construction generates revenue through project-based contracts for heavy civil construction services, specializing in complex infrastructure projects with budgets exceeding $50 million. Revenue is earned through direct contracting with public agencies and private entities for construction services.
2. Subcontractor Services: The company also operates as a key subcontractor on major design-build projects, such as the Donald C. Tillman Advanced Water Purification Facility under contract with Jacobs, generating revenue through subcontracted civil and mechanical work.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

Blois Construction provides heavy civil construction services for underground infrastructure, including wet utility piping (sewer, water, storm drain), stormwater retention/detention/filtration systems, mechanical plant work, cast-in-place and precast concrete structures, dry utility and gas piping, shoring systems, paving, and site work. Services are delivered through design-build, commercial, industrial, public works, and multi-housing projects, with specialized trenchless installation techniques including horizontal directional drilling (HDD), bore and jack, and micro-tunneling. The company serves as both prime contractor and subcontractor on complex Southern California infrastructure projects typically exceeding $50 million in value.

Product overview

Blois Construction is a heavy civil contractor specializing in underground infrastructure construction for Southern California. The company offers a unified portfolio of interconnected construction services organized around core competencies: wet utility piping (sewer, water, storm drain), stormwater management systems, mechanical plant work, concrete structures (cast-in-place and precast), dry utilities, gas piping, shoring systems, paving, and site work. These services are delivered as an integrated offering enabling complex infrastructure projects, with specialization in design-build, commercial, industrial, plant and mechanical, public work, and multi-housing projects with budgets exceeding $50 million. The company is known for trenchless installation techniques including horizontal directional drilling (HDD), bore and jack, and micro-tunneling.

Differentiator

Problem solved

Functional benefit

Products and services

• Wet Utility Piping Installation of sewer, water, and storm drain utilities of any size, including bore and jack, directional drilling, and micro-tunneling in all ground conditions. For public agencies, developers, and general contractors in Southern California.
• Storm Water Retention, Detention & Filtration Design and installation of stormwater management systems ranging from sediment control to purification and irrigation usage, delivered via pipe, cast-in-place, and pre-cast solutions. For municipalities, airports, and developers.
• Mechanical Services Large-scale plant work and installation of all types and sizes of mechanical piping, including pump stations, lift stations, and flow control stations. For water/wastewater treatment plants, industrial facilities, and infrastructure projects.
• Cast-in-Place and Precast Concrete Construction of cast-in-place concrete structures including manholes, catch basins, junctions, transitions, inlet/outlet structures, pump station structural concrete, box culverts, and trapezoidal channels. For public works and private infrastructure projects.
• Dry Utility Piping and Structures Installation of ducts, pre-cast structures, and conduit for power, communication, and data companies across residential, commercial, and plant/institutional projects. For utilities, developers, and institutional clients.
• Gas Piping Installation of below-grade gas piping using fused or welded methods with various material types. For utilities, developers, and contractors requiring underground gas distribution.
• Shoring Installation of various shoring systems including trench shields, slide rail systems, beam and plate, lagging, sheet piling, jet/chemical grouting, and secant pile walls. For projects requiring deep excavation support in urban corridors.
• Paving Restoration of projects to like-new conditions including roadways and trench restoration following underground utility installation. For municipalities, developers, and general contractors.
• Site Work Earthwork services including rough and fine grading for construction projects. For developers, general contractors, and public agencies.

Quantifiable outcome

• Five years (1,000,000 hours) without a lost time injury
• +3 more outcomes

Named customers19 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

Feature4 records

Partnerships

One partnership is on record.

• JacobscoreStrategic or Co-development PartnerJacobs serves as the design-build lead on the Donald C. Tillman Advanced Water Purification Facility project, with Blois Construction serving as a key subcontractor. This is a progressive design-build contract where Blois began construction even as design continued, requiring close collaboration and adaptability. The project will produce 45 MGD of Indirect Potable Reuse water for over 500,000 Angelenos ahead of the 2028 Olympics.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Ames Construction: Heavy civil contractor with comparable underground utility, water/wastewater pipeline, and treatment plant experience across the Western U.S., often engaged on large design-build pursuits with similar trade partners.
• Sukut Construction: Heavy civil contractor based in Southern California with similar expertise in earthwork, underground utilities, and water infrastructure. Overlaps on storm drain, site utilities, and large municipal projects.
• W.A. Rasic Construction: Southern California-based union underground utility and pipeline contractor with a comparable wet utility, dry utility, and paving portfolio serving municipal water and public works clients. Direct overlap in service mix, geography, and customer base.
• W.M. Lyles Co. California-based heavy civil and underground utility contractor with deep municipal water/wastewater pipeline expertise. Closely matches Blois' specialty in wet utility installation and treatment plant process piping.
• R.J. Noble Company: Orange County-based heavy civil and asphalt paving firm with underground utility, site work, and public works capability, competing for similar Southern California municipal and airport scopes.
• J.F. Shea Construction: Family-owned heavy civil and water infrastructure contractor with comparable underground pipeline, treatment plant, and shoring expertise, frequently active in Southern California and the Western U.S.

Broad incumbents

• Tutor Perini Corporation: Large publicly traded civil and specialty contractor with significant water, tunnel, and underground utility work in California. Competes for major municipal design-build and progressive design-build pursuits.
• Granite Construction: Publicly traded California-headquartered heavy civil contractor with large water resources, underground, and pipeline divisions. A broader incumbent that competes for the same large California municipal and design-build pursuits.
• Flatiron Construction: Heavy civil contractor specializing in transportation, water, and underground infrastructure across the Western U.S. Comparable in heavy civil water/wastewater pipeline scope at a larger scale.
• Kiewit Infrastructure West: One of North America's largest heavy civil contractors with a deep water/wastewater and underground pipeline practice. Functions both as a Blois prime contractor and as a direct competitor on design-build water projects.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 Blois Construction