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General Contractor Assistant Jobs in Rialto, CA (NOW HIRING)

Field Engineer

Riverside, CA · On-site

$19K/mo

Ranked #1 in aviation and #6 overall general contractor in 2024 by BD+C, Hensel Phelps is one of ... * Assist with quality control, site safety initiatives and coordination of trade partners as ...

Plumbing Engineer

Orange, CA

$90K - $114K/yr

Work closely with general contractors and owners as well as other sub-contractors and mep-design ... Ability to commute to different jobsites, and assist the Project Manager in managing large Plumbing ...

MWH is a leading water and wastewater treatment-focused general contractor in the US with a rich ... Proactively coordinate contractor activities with community needs. * Assist Construction Manager in ...

Senior Resident Engineer

Corona, CA · On-site

$140K - $175K/yr

MWH is a leading water and wastewater treatment-focused general contractor in the US with a rich ... Proactively coordinate contractor activities with community needs. * Assist Construction Manager in ...

MWH is a leading water and wastewater treatment-focused general contractor in the US with a rich ... Proactively coordinate contractor activities with community needs. * Assist Construction Manager in ...

The practice currently includes: * 2 surgeons * 1 physician assistant * 1 colorectal surgeon who ... Experienced candidates may work as 1099 independent contractors About Inland Valley Surgeons of ...

Fiber Blower Technician

Brea, CA · On-site

$21 - $25/hr

Company Description Pramira is a premier general contractor delivering safe, high-quality ... * Assist with cleanup and restoration of the worksite upon completion. * All other duties as ...

Construction Manager - CMS

Corona, CA · On-site

$150K - $225K/yr

MWH is a leading water and wastewater treatment-focused general contractor in the US with a rich ... will assist in new business development opportunities. Essential Functions * Oversee and manage ...

MWH is a leading water and wastewater treatment-focused general contractor in the US with a rich ... will assist in new business development opportunities. Essential Functions * Oversee and manage ...

Company Description Pramira is a premier general contractor delivering safe, high-quality ... * Assist with cleanup and restoration of the worksite upon completion. * All other duties as ...

Company Description Pramira is a premier general contractor delivering safe, high-quality ... * Assist with cleanup and restoration of the worksite upon completion. * All other duties as ...

Carry out minor carpentry and general repair tasks as needed * Assist with regular inspections and ... General Managers to align repair timelines * Submit invoices for contractor work or timecards if ...

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General Contractor Assistant information

See Rialto, CA salary details

$10

$18

$23

How much do general contractor assistant jobs pay per hour?

As of Jun 13, 2026, the average hourly pay for general contractor assistant in Rialto, CA is $18.02, according to ZipRecruiter salary data. Most workers in this role earn between $15.15 and $21.26 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a General Contractor Assistant, and why are they important?

To thrive as a General Contractor Assistant, you need a basic understanding of construction processes, project documentation, and safety protocols, often supported by a high school diploma or relevant trade certifications. Familiarity with project management software, scheduling tools, and construction site equipment is typically required. Strong organizational skills, attention to detail, and effective communication make someone stand out in this position. These skills are crucial for supporting project efficiency, ensuring safety compliance, and facilitating smooth coordination between teams and subcontractors.

What is the difference between General Contractor Assistant vs Construction Coordinator?

AspectGeneral Contractor AssistantConstruction Coordinator
CredentialsHigh school diploma, some experience in constructionHigh school diploma, often some project management knowledge
Work EnvironmentConstruction sites, officesConstruction sites, project offices
Employer & Industry UsageConstruction companies, general contractorsConstruction firms, project management teams
Common Search & ComparisonYesYes

The main difference is that a General Contractor Assistant supports the general contractor with daily tasks, scheduling, and coordination, often focusing on site assistance. A Construction Coordinator typically handles project planning, communication, and documentation, often with more emphasis on administrative and organizational duties. Both roles are essential in construction projects but differ in scope and responsibilities.

What are General Contractor Assistants?

General Contractor Assistants support general contractors in managing construction projects by performing administrative, organizational, and hands-on tasks. Their duties often include coordinating schedules, communicating with subcontractors and suppliers, maintaining project documentation, and ensuring that safety regulations are followed on-site. They help keep projects running smoothly by assisting with project planning, budget tracking, and addressing any logistical needs that arise. This role is vital for efficient project execution and helps ensure construction projects are completed on time and within budget.

What are some typical challenges faced by a General Contractor Assistant, and how can they be managed?

General Contractor Assistants often face challenges such as juggling multiple tasks on tight deadlines, coordinating with various subcontractors, and adapting quickly to changes on the job site. Effective time management, clear communication, and a proactive approach to problem-solving are essential for success in this role. Building strong relationships with team members and staying organized can help manage these challenges and contribute to smooth project execution.

What Does a General Contractor Assistant Do?

As a general contractor assistant, you assist construction teams on a building site and in an office. Your responsibilities include tasks like preparing and securing equipment, maintaining clean and safe work areas, and collaborating with teams of workers to complete each project. You use power and hand tools, direct subcontractors and temporary staff on daily duties, inventory materials, and collaborate with team members to complete tasks. Duties also include attending meetings and taking notes as necessary, communicating with teams of architects, engineers, subcontractors, and other team members, and following guidelines to ensure each structure is safe and meets code requirements.

What are the most commonly searched types of General Contractor jobs in Rialto, CA? The most popular types of General Contractor jobs in Rialto, CA are:
What are popular job titles related to General Contractor Assistant jobs in Rialto, CA? For General Contractor Assistant jobs in Rialto, CA, the most frequently searched job titles are:
What job categories do people searching General Contractor Assistant jobs in Rialto, CA look for? The top searched job categories for General Contractor Assistant jobs in Rialto, CA are:
What cities near Rialto, CA are hiring for General Contractor Assistant jobs? Cities near Rialto, CA with the most General Contractor Assistant job openings:
Operations Intern - CPI Skillsbridge

Operations Intern - CPI Skillsbridge

Hensel Phelps Construction

Riverside, CA • On-site

$16 - $20.75/hr

Full-time

Vision, PTO

Posted 2 days ago


Hensel Phelps rating

6.5

Company rating: 6.5 out of 10

Based on 16 frontline employees who took The Breakroom Quiz


Job description

Any Employment Offers are Contingent Upon Successful Completion of the Following:

  • Verification of Work Authorization and Employment Eligibility 
  • Substance Abuse Screening
  • Physical Exam (if applicable)
  • Background Checks for Badging/Security Clearances (if applicable)

About Hensel Phelps:

Founded in 1937, Hensel Phelps specializes in building development, construction and facility services in markets ranging from aviation to government, commercial, transportation, critical facilities, healthcare and transportation. Ranked #1 in aviation and #6 overall general contractor in 2024 by BD+C, Hensel Phelps is one of the largest employee-owned general contractors in the country. Driven to deliver EXCELLENCE in all we do and supported by our core values of Ownership, Integrity, Builder, Diversity and Community, Hensel Phelps brings our clients' visions to life with a comprehensive approach that begins with innovative planning and extends throughout the life of the property.

Position Description:

The primary goals for interns are to gain an understanding of the construction process and to assist the Field Engineers and Office Engineers in field and materials management. The internship program provides the intern and Hensel Phelps with an extended opportunity to evaluate if the fit is right for a long and successful career with Hensel Phelps after graduation. This is a safety sensitive position.

Position Qualifications:

  • Strong communication skills.
  • Computer software - Microsoft Office Suite, specifically Excel based templates, Prolog, Primavera and AutoDesk Suite.
  • Candidates are preferred to be pursuing a 4-year degree in Civil, Structural, Architecture or Construction Management.

Essential Duties:

  • Subcontractor Management.
  • Submittal review skills.
  • RFI development.
  • Layout / surveying.
  • Daily reports.
  • Quality control and support of our safety plan.

 Physical Work Classification & Demands:

Moderate Work. Exerting up to 50 pounds of force occasionally, and/or up to 25 pounds of force frequently, and/or 10 pounds of force constantly to move objects.

• The individual in this position will periodically walk, kneel, sit, crouch, reach, stoop, read/see, speak, push, pull, lift, stand, and finger/type. The frequency of each action varies by workflow and office activity.

• Walking - The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, boxes, cabinets, etc.

• Constantly operates a computer and other office machinery, such as a calculator, copy machine, phone, computer, and computer printer.

• The person in this position frequently communicates with employees and external stakeholders regarding a variety of topics related to office administration.

• Constantly computes, analyzes, and conceptualizes mathematical calculations and formulas.

• The person in this position regularly sits in a stationary position in front of a computer screen.

• Constantly reads written communications and views mail submissions. Will also need to read blueprints and take/verify field measurements.

• Climbing – Ascending or descending ladders, stairs, scaffolding and ramps at various heights.

• Balancing – Ability to maintain body equilibrium to prevent falling and to walk, stand or crouch.

• Stooping – Bending the body downward and forward by the spine at the waist.

• Visual acuity and ability to operate a vehicle as certified and appropriate.

• Occasionally exposed to high and low temperatures 

• Frequently exposed to noisy environments and outdoor elements such as precipitation and wind.

Benefits:

Hensel Phelps believes in the importance of taking time to recharge. As a result, employees are eligible for paid time off beginning upon hire.

Equal Opportunity and Affirmative Action Employer:

Hensel Phelps is an equal opportunity employer.  Hensel Phelps is committed to engaging in affirmative action to increase employment opportunities for protected veterans and individuals with disabilities.  Hensel Phelps shall not discriminate against any employee or applicant for employment on the basis of race, color, religion, sex, age, national origin, sexual orientation, gender identity and expression, domestic partner status, pregnancy, disability, citizenship, genetic information, protected veteran status, or any other characteristic protected by federal, state, or local law.

The contractor will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. 41 CFR 60-1.35(c)


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