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Construction Office Assistant Jobs in Rialto, CA

Ultimate LLC

Office Assistant

Ontario, CA · On-site

$20/hr

Position Overview Ultimate Staffing Services is actively seeking an Office Assistant/PM Assistant ... Education requirement is a high school diploma. * 2-5+ years of experience in the construction ...

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Construction Office Assistant information

See Rialto, CA salary details

$9

$18

$25

How much do construction office assistant jobs pay per hour?

As of Sep 7, 2026, the average hourly pay for construction office assistant in Rialto, CA is $18.99, according to ZipRecruiter salary data. Most workers in this role earn between $16.15 and $21.20 per hour, depending on experience, location, and employer.

What is a construction office assistant?

Construction Office Assistants are administrative professionals who support construction projects by handling clerical tasks such as filing, scheduling, document management, and communications. They often assist project managers and field staff with organizing paperwork, coordinating meetings, and ensuring compliance with regulations. Their role is essential for keeping construction offices running smoothly and efficiently.

What are the key skills and qualifications needed to thrive as a construction office assistant?

To thrive as a Construction Office Assistant, you need strong organizational skills, attention to detail, and familiarity with basic office procedures, often supported by a high school diploma or equivalent. Proficiency in Microsoft Office Suite, scheduling software, and construction management systems like Procore is typically required. Excellent communication, multitasking, and problem-solving abilities help you coordinate with teams and handle changing priorities. These skills are crucial for maintaining project documentation, supporting field staff, and ensuring efficient office operations in a fast-paced construction environment.

What are some common challenges faced by construction office assistants, and how can they be managed effectively?

Construction Office Assistants often manage multiple tasks simultaneously, such as coordinating schedules, handling documentation, and communicating with various teams. Challenges can include adapting to shifting project priorities, dealing with tight deadlines, and ensuring accuracy in paperwork like permits and invoices. To manage these effectively, strong organizational skills, attention to detail, and clear communication are essential. Building good relationships with both the field and office staff also helps streamline workflow and resolve issues promptly.

What is the difference between Construction Office Assistant vs Construction Secretary?

AspectConstruction Office AssistantConstruction Secretary
CredentialsHigh school diploma or equivalent; some roles may require basic administrative certificationsHigh school diploma; often additional secretarial or administrative certifications
Work EnvironmentConstruction offices, project sites (administrative areas)Construction offices, administrative settings
Job ResponsibilitiesScheduling, document management, assisting with project coordinationManaging correspondence, scheduling meetings, handling phone calls

The Construction Office Assistant and Construction Secretary roles share similar environments and credential requirements, focusing on administrative support within construction projects. The main difference lies in scope: assistants often handle broader tasks like project coordination, while secretaries focus more on communication and scheduling tasks.

What are the most commonly searched types of Construction Office jobs in Rialto, CA?

The most popular types of Construction Office jobs in Rialto, CA are:

What are popular job titles related to Construction Office Assistant jobs in Rialto, CA?

For Construction Office Assistant jobs in Rialto, CA, the most frequently searched job titles are:

What job categories do people searching Construction Office Assistant jobs in Rialto, CA look for?

The top searched job categories for Construction Office Assistant jobs in Rialto, CA are:

What cities near Rialto, CA are hiring for Construction Office Assistant jobs?

Cities near Rialto, CA with the most Construction Office Assistant job openings:

Construction Office Assistant jobs near you
Infographic showing various Construction Office Assistant job openings in Rialto, CA as of August 2026, with employment types broken down into 1% As Needed, 85% Full Time, 12% Part Time, and 2% Contract. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution, with an average salary of $39,494 per year, or $19 per hour.

Office Assistant

Ultimate LLC

Ontario, CA • On-site

$20/hr

Other

PTO

Posted 28 days ago

Job description

Job Description
Position Overview
Ultimate Staffing Services is actively seeking an Office Assistant/PM Assistant for an esteemed client in California. The role involves providing a wide range of administrative and office support, ensuring smooth operations and maintaining high standards of organization. This position is pivotal in managing document archiving, file auditing, and offering front desk support.
Responsibilities

  • Serve as a backup for the receptionist, including covering breaks and lunch periods, and executing all Receptionist duties.
  • Provide scheduled PTO coverage for phones until 5:00 PM.
  • Support administrative tasks such as data entry, preparing documents, and tracking databases as assigned by management.
  • Close out Estimator and PM Books/Archiving and file all job-related paperwork.
  • Operate standard office equipment including postage machines, copiers, printers, and computers.
  • Prepare files/documentation for job audits and conduct a full audit of files when a project is closed and prior to archiving.
  • Draft meeting minutes, cost estimates, and miscellaneous project correspondence.
  • Perform other administrative duties as assigned to support company operations.
Qualifications
  • Education requirement is a high school diploma.
  • 2-5+ years of experience in the construction industry preferred.
  • Knowledge of administrative and clerical procedures, including word processing and managing files and records.
  • Basic computer skills in Word, Excel, Outlook, PDF, and scanning.
  • Strong attention to detail and organizational skills.
  • Ability to manage multiple tasks and meet deadlines in a fast-paced environment.
  • Professional demeanor with strong communication and interpersonal skills.
  • Team-oriented and able to collaborate effectively across departments.
  • Reliable, punctual, and adaptable to changing priorities.
Required Work Hours
The work schedule is Monday through Friday, from 8:00 AM to 4:30 PM with a 30-minute lunch break. If the receptionist is on scheduled PTO, the work hours extend to 5:00 PM with a one-hour lunch break.
Benefits
This position offers a stable work environment with opportunities for growth and development within the company. The pay is fixed at $20 per hour, with approximately 0% travel time required.
Physical Requirements
  • Prolonged periods of sitting at a desk and working on a computer.
  • Must be able to lift 15 pounds at times.
  • Must be able to access and navigate each department at the organization's facilities.

Interested candidates are encouraged to apply directly to this job posting for consideration.
All qualified applicants will receive consideration for employment without regard to race, color, national origin, age, ancestry, religion, sex, sexual orientation, gender identity, gender expression, marital status, disability, medical condition, genetic information, pregnancy, or military or veteran status. We consider all qualified applicants, including those with criminal histories, in a manner consistent with state and local laws, including the California Fair Chance Act, City of Los Angeles' Fair Chance Initiative for Hiring Ordinance, Los Angeles County Fair Chance Ordinance, and San Francisco Fair Chance Ordinance.
Job Reference: JN -062026-423253

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