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Project Administration Assistant Jobs in California

Lawrence B. Bonas Company

Be Seen First

Administration Assistant

Costa Mesa, CA · On-site

$24 - $29/hr

We are looking for a Full Time Office Assistant for our construction industry office. We want ... projects, employees, vendors, and customers organized. If you meet the following requirements ...

Augment

Administration Assistant

Sun Valley, CA · On-site

$20/hr

What You'll Do As an Administrative Assistant placed on-site through Augment, you'll handle office ... Support the operations team with general clerical tasks, reports, and administrative projects. What ...

Colburn

Events Administration Assistant

Los Angeles, CA · On-site

The Events Administration Assistant / Executive Assistant organizes and coordinates executive ... The Executive Assistant will have the ability to work independently on projects, from conception to ...

Colburn

Events Administration Assistant

Los Angeles, CA · On-site

The Events Administration Assistant / Executive Assistant organizes and coordinates executive ... The Executive Assistant will have the ability to work independently on projects, from conception to ...

Hughes Marino

Project Coordinator

Irvine, CA · On-site

$65K - $85K/yr

... day project administration across a dynamic and technically demanding portfolio. This is a role ... distribution * Assist with the collection, verification, and consolidation of cost and schedule ...

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Project Administration Assistant information

What is a project administration assistant?

Project Administration Assistants are professionals who support project managers and teams by handling administrative tasks such as scheduling meetings, maintaining project documentation, preparing reports, and coordinating communication among team members. They play a crucial role in ensuring that projects run smoothly by keeping track of deadlines, managing files, and assisting with budgeting and procurement processes. Their organizational and communication skills help keep projects on schedule and within budget.

How does a project administration assistant typically collaborate with project managers and team members on a daily basis?

As a Project Administration Assistant, you'll regularly coordinate with project managers by organizing meetings, preparing documentation, and tracking progress against timelines. You'll also support team members by maintaining shared files, distributing updates, and helping resolve scheduling or logistical issues. This role requires strong communication skills and attention to detail to ensure all stakeholders stay informed and projects remain on track.

What are the key skills and qualifications needed to thrive as a project administration assistant, and why are they important?

To thrive as a Project Administration Assistant, you need strong organizational skills, attention to detail, and proficiency in office administration, often supported by a diploma or relevant experience. Familiarity with project management software (such as MS Project or Asana), spreadsheets, and document management systems is typically required. Excellent communication, time management, and teamwork skills help you coordinate with multiple stakeholders and manage competing priorities. These skills ensure efficient project support, smooth workflow, and timely completion of tasks within project timelines.

What is the difference between Project Administration Assistant vs Project Coordinator?

AspectProject Administration AssistantProject Coordinator
CredentialsTypically requires administrative or project management certifications, relevant experienceOften requires similar certifications, with additional project management training
Work EnvironmentOffice setting, supporting project teams with administrative tasksOffice or on-site, coordinating project activities and communication
Employer & Industry UsageCommon in construction, IT, engineering, and corporate sectorsUsed across industries like construction, IT, and marketing for project oversight
Search & Comparison IntentPeople compare roles focused on administrative support within projectsIndividuals seeking roles with more coordination and project oversight responsibilities

While both roles support project teams, the Project Administration Assistant primarily handles administrative tasks, whereas the Project Coordinator takes on more active project oversight and coordination responsibilities.

How much is a project administration assistant paid?

The salary for a project administration assistant typically ranges from $40,000 to $60,000 annually, depending on experience, location, and industry. Entry-level positions may start lower, while experienced assistants or those in high-demand areas can earn more. Compensation often includes benefits such as health insurance and paid time off.

What cities in California are hiring for Project Administration Assistant jobs?

Cities in California with the most Project Administration Assistant job openings:

Project Administration Assistant jobs near you
Infographic showing various Project Administration Assistant job openings in California as of August 2026, with employment types broken down into 90% Full Time, 7% Part Time, and 3% Contract. Highlights an 82% Physical, 5% Hybrid, and 13% Remote job distribution.

Administration Assistant

Costa Mesa, CA • On-site

Lawrence B. Bonas Company
Construction • 51 - 200 employees
Learn more about Lawrence B. Bonas Companyexternal

$24 - $29/hr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 5 days ago

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Job description

We are looking for a Full Time Office Assistant for our construction industry office. We want someone who is more than a receptionist or data-entry person. We are looking for a proactive, organized individual who can become the administrative backbone of our office—someone who sees what needs to be done, follows through, keeps management informed, and helps keep accounting, projects, employees, vendors, and customers organized. If you meet the following requirements, please apply. Thank you!

Essential Duties and Responsibilities included but not limited to:

- Provide basic accounting administration support: AP/AR

- Maintain and audit vendor files including W-9's, Insurance Certificates and assist with 1099 forms.

- Assign, process, and maintain job number lists.

- Create Project Files.

- Review and process all invoices and verify accuracy

- Research Invoice discrepancies.

- Data Entry: Daily/weekly Purchase Order Entry

- Preparation of weekly payroll.

- Preparation and Reporting of Monthly Certified Payroll.

- Responsible for the maintenance and organization of accounting files.

- Acquire the skillset to manage the job closing process.

Clerical Support Duties - Included but not limited to:

- Prepare and modify documents including correspondence, reports, drafts, memos and emails.

- Maintains and updates filing system. Retrieves information from files when needed.

- Operate office machines, such as photocopiers and scanners, facsimile machines, voice mail systems, and personal computers.

- Works independently and within a team on special nonrecurring and ongoing projects.

- Cross Train office Duties: To cover for others on Vacation and/or PTO

Other Qualifications and/or Requirements:

- Must have knowledge of Microsoft Word, Outlook, and Excel.

- Previous experience in construction industry preferred.

- Results oriented and able to work under pressure

- Self-motivated and driven

- Good Communication Skills, General Office Skills, and Follow Through.

- Critical Thinking and ability to learn tasks at a quick pace

- One year of responsible clerical and routine technical accounting experience involving the maintenance and posting of accounting.

Company Description

Bonas Company is a leader in commercial painting and coating solutions, serving all Southern California. As an industry leading painting contractor, we are excited to bring exceptional customer service to our clients.