R. J. Daum

What R. J. Daum does

R. J. Daum Construction Company (RJD) is a privately held, Woman Owned Small Business Enterprise general contractor established in 1936 and incorporated in Nevada in 1949. The company delivers commercial construction across Southern California, covering Ventura, Los Angeles, Orange, Riverside, San Bernardino, Inyo, San Diego, and Imperial counties. RJD operates through hard-bid, negotiated, and Design/Build project delivery methods under a California 'B' General Building Contractors License and a 'C8' Concrete License, and is a member of AGC with affiliations to the Carpenters, Cement Masons, and Laborers Unions.

Core service offerings span three lines: (1) general contracting and construction management for educational institutions, healthcare facilities, fire and police stations, correctional institutions, parking structures, and public utility facilities; (2) structural and site concrete services including heavy structural concrete, CMU projects, steel construction, and subterranean work; and (3) telecommunications infrastructure construction covering central offices, data centers, cell sites, microwave stations, and tenant improvements. Named project experience includes LA Fire Station #21, OC Juvenile Hall, Covina Civic Center parking, LA SW College Student Services, and the Internet Data Center Phase 1 & 2 in Irvine.

RJD monetizes through project-based, negotiated contracts with multi-year cadences and no standardized public pricing. Go-to-market is relationship-driven, leveraging direct relationships with city governments, public utilities, and Southern California telecom incumbents rather than traditional marketing channels. The firm has invested in improved bidding systems and automated project communications with clients and subcontractors to remain competitive. The employee base averages more than 15 years of tenure, supporting institutional knowledge across specialized public-sector and telecom work.

Name

R. J. Daum

Legal name

R.J. Daum Construction Company

Website

https://rjdaum.com

Company type

Private

Founded year

1936

Operating status

Operating

Headcount range

1–10 employees

Short description

R. J. Daum Construction Company is a privately held Southern California general contractor founded in 1936 that delivers commercial, institutional, and telecommunications infrastructure construction across eight counties. The firm serves city governments, educational institutions, public utilities, and telecom companies under a Woman Owned SBE certification.

Ownership category

akta.pro rank

Product category

Commercial Construction Services

NAICS

Nonresidential Building Construction (2362), Commercial and Institutional Building Construction (23622), Poured Concrete Foundation and Structure Contractors (23811), Industrial Building Construction (23621)

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

Design-Build / EPC General Contracting (IMAFAAAD), Public Works General Contracting (IMAFAAAG)

Keywords

• General contracting services
• Structural concrete construction
• Commercial construction California
• Design build projects
• Telecommunications infrastructure construction

Headquarters

HQ city

Garden Grove

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales, Others

Revenue model

1. General Contracting Services: Core revenue stream from general contracting services and construction management, covering hard-bid, negotiated, and Design/Build projects for commercial and public facilities.
2. Structural and Site Concrete Services: Leading provider of structural and site concrete services for Southern California, generating revenue through specialized concrete construction work including heavy structural concrete and CMU projects.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

R. J. Daum Construction Company is a Southern California general contractor delivering commercial construction through hard-bid, negotiated, and Design/Build delivery methods, with specialized expertise in structural and site concrete services and telecommunications infrastructure construction. The firm builds educational, healthcare, correctional, fire/police, parking, and public utility facilities for government and institutional clients across eight Southern California counties.

Product overview

R.J. Daum Construction Company offers a unified suite of construction services centered on General Contracting and Management, with specialized expertise in Structural and Site Concrete Services for Southern California. The company delivers projects through hard-bid, negotiated, and Design/Build delivery methods. Core service offerings include general contracting for commercial facilities (Educational Institutions, Healthcare Facilities, Fire & Police Stations, Correctional Institutions, Parking Structures, and Public Utility facilities), specialized concrete services (heavy structural concrete, CMU projects, steel construction, subterranean work), and telecommunications construction (Data Centers, Central Offices, Cell Sites, Microwave Stations).

Differentiator

Problem solved

Functional benefit

Products and services

• General Contracting Services and Management Comprehensive general contracting services delivered through hard-bid, negotiated, and Design/Build project delivery methods for educational institutions, healthcare facilities, fire and police stations, correctional institutions, parking structures, and public utility facilities across Southern California.
• Structural and Site Concrete Services Specialized structural and site concrete services for Southern California, including heavy structural concrete, CMU (Concrete Masonry Unit) projects, steel construction, and subterranean work for institutional, civic, and infrastructure clients.
• Telecommunications Construction Services Construction services for the telecommunications industry covering Central Offices, Administrative Offices, Data Centers, Building Additions, Remote Mountaintop Microwave Stations, Cell Sites, Building Improvements, and Tenant Improvements for Southern California telecommunications carriers, with a commitment to client Network Reliability standards.

Named customers10 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Four partnerships are on record, tiered core.

• AGC (Associated General Contractors)coreOthersRJD is a proud member of AGC, providing industry representation, networking opportunities, and credibility in the construction industry. This membership supports business development and keeps the company connected to industry best practices.
• Carpenters UnioncoreOthersUnion affiliation providing access to trained carpenters for construction projects, ensuring skilled labor availability and quality craftsmanship.
• Cement Masons UnioncoreOthersUnion affiliation providing access to trained cement masons for concrete work, supporting RJD's structural and site concrete services.
• Laborers UnioncoreOthersUnion affiliation providing access to trained laborers for construction projects, supporting diverse construction needs.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Market position

Strengths4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

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 R. J. Daum