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Assistant Estimator Jobs in Riverside, CA (NOW HIRING)

Shimmick

Senior Estimator

Irvine, CA · On-site +1

$110K - $150K/yr

Expected to assist in the preparation of larger and more complex estimating assignments including the Estimate Plan. * Understands Division costing structure (overheads, G&A, insurance, etc)

RimePro Inc

Plumbing Estimator

Corona, CA

$80K - $110K/yr

Provide value engineering solutions to optimize cost and improve project efficiency. * Assist in preparing bid proposals, budgets, and scope summaries. * Maintain organized estimate files, cost ...

Careers at Teichert

Chief Estimator

Ontario, CA · On-site

$131K - $173K/yr

May assist in the preparation of studies, materials and methods, recommendations, and cost estimates. * Facilitates collaboration across area offices and builds consistency across estimating ...

C. W. Driver

Estimator- Driver SPG

Anaheim, CA · On-site

The Estimator is responsible for preparing accurate and comprehensive cost estimates during all ... Participate in project scheduling efforts and assist in preparing preliminary schedules. * Assist ...

Griffith Company

Senior Estimator

Brea, CA · On-site

$140K - $175K/yr

Lead training efforts for the Estimating Department. * Assist Chief Estimator with B2W maintenance and updates * Champion continuous improvement initiatives. * Lead bid closings and provide guidance ...

Teichert

Chief Estimator

Ontario, CA · On-site

$131K - $173K/yr

May assist in the preparation of studies, materials and methods, recommendations, and cost estimates. * Facilitates collaboration across area offices and builds consistency across estimating ...

Griffith Company

Senior Estimator

Brea, CA · On-site

$140K - $175K/yr

Lead training efforts for the Estimating Department. * Assist Chief Estimator with B2W maintenance and updates * Champion continuous improvement initiatives. * Lead bid closings and provide guidance ...

Nucor

Senior Estimator

San Bernardino, CA · On-site

$93K - $125K/yr

Stay informed on industry trends, pricing fluctuations, and best practices to ensure accurate and competitive estimating. * Assist the project management team with preparing change orders and large ...

YKK AP America

ESTIMATOR-CA

Rancho Cucamonga, CA · On-site

Identifies cost trends to assist management in cost reduction and process improvement efforts. * Analyzes completed projects to compare estimated costs to actual costs and determine the reason for ...

Taber Company

Junior Millwork Estimator

Irvine, CA · On-site

Job Overview: * Assist lead estimators in reviewing project documents, plans, and specifications to determine project requirements. * Assist in completing detailed quantity take-offs and cost ...

YKK AP America

ESTIMATOR-CA

Rancho Cucamonga, CA · On-site

Identifies cost trends to assist management in cost reduction and process improvement efforts. * Analyzes completed projects to compare estimated costs to actual costs and determine the reason for ...

Taber Company

Junior Millwork Estimator

Irvine, CA · On-site

$50K - $65K/yr

Job Overview: * Assist lead estimators in reviewing project documents, plans, and specifications to determine project requirements. * Assist in completing detailed quantity take-offs and cost ...

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All JobsEstimator JobsAssistant Estimator JobsAssistant Estimator Jobs in Riverside, CA

Assistant Estimator information

See Riverside, CA salary details

$16

$25

$44

How much do assistant estimator jobs pay per hour?

As of Aug 13, 2026, the average hourly pay for assistant estimator in Riverside, CA is $25.81, according to ZipRecruiter salary data. Most workers in this role earn between $19.81 and $28.08 per hour, depending on experience, location, and employer.

What is the difference between Assistant Estimator vs Estimator?

AspectAssistant EstimatorEstimator
CredentialsTypically requires a relevant diploma or degree, some industry experienceRequires more experience, often a degree in construction management or related field
Work EnvironmentSupports senior estimators, works in office and on-siteLeads cost estimation, interacts with clients and project teams
ResponsibilitiesPrepares initial estimates, gathers data, assists in bid preparationDevelops detailed cost estimates, reviews project plans, manages bid process

The main difference between an Assistant Estimator and an Estimator lies in experience and responsibility. An Assistant Estimator supports the estimation process with preliminary tasks, while an Estimator takes on more complex, independent responsibilities in preparing detailed project costs.

What are the key skills and qualifications needed to thrive as an assistant estimator, and why are they important?

To thrive as an Assistant Estimator, you need strong analytical abilities, attention to detail, and a background in construction or engineering, often supported by a relevant degree or coursework. Familiarity with estimation software such as Bluebeam, ProEst, or Microsoft Excel, as well as reading construction drawings, is typically required. Strong communication, time management, and teamwork skills help you coordinate effectively with project managers, suppliers, and clients. These competencies are essential to ensure accurate cost estimates, timely project delivery, and smooth collaboration within construction teams.

What are some common challenges faced by assistant estimators when preparing cost estimates, and how can they be managed?

Assistant Estimators often face challenges such as incomplete project documentation, fluctuating material costs, and tight deadlines. Managing these issues requires strong attention to detail, effective communication with project managers and suppliers, and the ability to adapt quickly to updated information. Building solid relationships with vendors and leveraging estimating software can also help streamline the process. Collaborating closely with senior estimators and other team members ensures more accurate and reliable estimates.

What does an assistant estimator do?

An Assistant Estimator supports the lead estimator in calculating the costs and resources needed for construction or manufacturing projects. Their duties typically include gathering and analyzing data, reviewing project plans and specifications, preparing cost estimates, and helping create bids for potential projects. They also assist in sourcing materials, communicating with vendors and subcontractors, and maintaining records of estimates. This role is crucial in helping companies prepare competitive and accurate bids and ensuring projects stay within budget.

What are the most commonly searched types of Estimator jobs in Riverside, CA?

The most popular types of Estimator jobs in Riverside, CA are:

What are popular job titles related to Assistant Estimator jobs in Riverside, CA?

For Assistant Estimator jobs in Riverside, CA, the most frequently searched job titles are:

What job categories do people searching Assistant Estimator jobs in Riverside, CA look for?

The top searched job categories for Assistant Estimator jobs in Riverside, CA are:

What cities near Riverside, CA are hiring for Assistant Estimator jobs?

Cities near Riverside, CA with the most Assistant Estimator job openings:

Assistant Estimator jobs near you
Infographic showing various Assistant Estimator job openings in Riverside, CA as of August 2026, with employment types broken down into 100% Full Time. Highlights an 60% In-person, and 40% Hybrid job distribution, with an average salary of $53,675 per year, or $25.8 per hour.

Senior Estimator

Shimmick

Irvine, CA • On-site, Remote

$110K - $150K/yr

Full-time

Medical, Dental, Vision, Life

Re-posted 26 days ago

Job description

Overview

Shimmick is seeking a talented Senior Estimator to be based in Irvine, CA, Suisun City, CA, Seattle, WA, Denver, CO, Dallas, TX, or remotely. This challenging position will provide excellent growth opportunity while supporting complex civil infrastructure projects across Shimmick's expanding footprint.

Backed by over 100 years of expertise and driven by innovation and an entrepreneurial spirit, Shimmick is one of the most dynamic infrastructure builders in the industry. With market leadership in water resources, sustainable transportation, and complex electrical construction, we're well-positioned to lead during a time of rapid change. As project delivery models, regulatory frameworks, supply chains, and technology continue to evolve, our ability to stay flexible and agile in our safety approach is essential to our success.

Responsibilities

The responsibilities of this position include, but are not limited to the following:

  • Works with the Company estimating systems and processes.
  • Applies estimating terminology, measures, concepts and principles.
  • Recognizes how various processes/project actions and assumptions may impact the project estimates and begin to assist in quantifying the impact.
  • Technical estimating skills. 
  • Prepares bid packages, conceptual estimates and analysis of subcontractor bids, etc. for projects.
  • Performs duties with some complexity under general supervision.
  • Expected to assist in the preparation of larger and more complex estimating assignments including the Estimate Plan.
  • Understands Division costing structure (overheads, G&A, insurance, etc).
  • Develops wage rate build-ups.
  • Reads and interprets drawings and specifications.
  • Develops detailed material take-offs for estimate development and field procurement of bulk materials.
Qualifications

Minimum Requirements:

  • Bachelor's Degree in Engineering, Construction Management, or related field + 4 years of relevant experience or demonstrated equivalency of experience and/or education.
  • Experience estimating heavy civil, heavy industrial, or complex commerial construction projects.

Preferred Qualifications:

  • Experience in Rail, Transit, and/or Water/Wastewater infrastructure projects.
  • Knowledge and experience in Microsoft Office Suite.
  • Strong problem-solving skills and consistent attention to detail.
  • Ability to manage changing deadlines and work well under pressure for multiple team leaders.
  • Work independently and effectively to prioritize multiple tasks.
  • Highly organized with excellent time management skills.
  • Excellent verbal, written communication, and interpersonal skills.
  • Ability to travel for bid meetings and related activities.

Additional Information:

  • Qualified applicants who are offered a position must pass a pre-employment substance abuse test.
  • This position does not include sponsorship for United States work authorization.

The salary range for this position is between $110,000- $150,000 per year depending on experience and/or education.

Shimmick's comprehensive benefits plan includes medical, dental and vision coverage; as well as options to participate in an FSA or HSA. The Company also provides employer paid STD, LTD, basic life and AD&D, and an Employee Assistance Program. Additional voluntary benefit offerings include pet insurance, hospital indemnity, critical illness insurance, legal and identity theft protection.

These benefits are available to all employees working more than 20 hours per week. Employees working less than 20 hours per week are eligible for medical, dental and vision coverage as well as EAP services.

NOTICE TO THIRD PARTY AGENCIES:Please note that Shimmick does not accept unsolicited resumes from recruiters or employment agencies. In the absence of a signed Recruitment Fee Agreement, Shimmick will not consider or agree to payment of any referral compensation or recruiter fee. In the event a recruiter or agency submits a resume or candidate without a previously signed agreement, Shimmick explicitly reserves the right to pursue and hire those candidate(s) without any financial obligation to the recruiter or agency. Any unsolicited resumes, including those submitted to hiring managers, are deemed to be the property of Shimmick. AN EQUAL OPPORTUNITY EMPLOYERAll qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. #LI-AR1Employment Type: FULL_TIME

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