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Assistant Estimator Jobs in Riverside, CA (NOW HIRING)

C.W. Driver

Estimator- Driver SPG

Anaheim, CA

Solicit, evaluate, and level subcontractor bids; coordinate RFIs between bidders and design teams. * Assist in developing conceptual and detailed estimates using historical cost data. * Support value ...

S.J. Amoroso Construction

Estimator

Irvine, CA · On-site

$115K - $140K/yr

This role combines technical estimating, bid strategy, risk management, subcontractor engagement ... Prepare preliminary project schedules for bidding purposes. * Assist in preparation of schedule and ...

SJ Amoroso Construction

Estimator

Irvine, CA · On-site

This role combines technical estimating, bid strategy, risk management, subcontractor engagement ... Prepare preliminary project schedules for bidding purposes. * Assist in preparation of schedule and ...

Uprite Construction

Junior Estimator

Irvine, CA · On-site

What You'll Do: * Assist with preparing conceptual and detailed construction estimates * Perform quantity takeoffs from drawings and specifications * Solicit, review, and analyze subcontractor and ...

Meruelo Group LLC

Estimator

Riverside, CA · On-site

$135K - $165K/yr

Estimator Reports to: Director of Estimating Welcome to Herman Weissker, Inc. where we've been ... Key Responsibilities: * Assist in the updating and issuing of weekly Volume Tracking and Business ...

SJ Amoroso Construction

Senior Estimator

Irvine, CA · On-site

Prepare preliminary project schedules for bidding purposes. * Assist in the preparation of project ... Lead estimate turnover meetings with operations and clearly communicate project scope, assumptions ...

S.J. Amoroso Construction

Senior Estimator

Irvine, CA · On-site

$150K - $200K/yr

Prepare preliminary project schedules for bidding purposes. * Assist in the preparation of project ... Lead estimate turnover meetings with operations and clearly communicate project scope, assumptions ...

ProWest Constructors

Estimator

Wildomar, CA · On-site

Develop labor, material, and equipment pricing and build cost estimates * Assist with subcontractor outreach, bid tracking, and proposal comparisons * Help prepare bid packages, summaries, and final ...

ProWest Constructors

Estimator

Wildomar, CA · On-site

$110K - $160K/yr

Develop labor, material, and equipment pricing and build cost estimates * Assist with subcontractor outreach, bid tracking, and proposal comparisons * Help prepare bid packages, summaries, and final ...

Shimmick

Lead Estimator

Irvine, CA · On-site +1

$160K - $215K/yr

Expected to assist in the preparation of larger and more complex estimating assignments including overall estimating strategy. * Understands construction means, methods, and sequencing. * Understands ...

ServiceMaster

Estimator

Riverside, CA · On-site

... assist in being successful in this position. Xactimate experience is an essential requirement of this job. If you do not have experience with this software, you will not be considered for this ...

Black & Veatch

Estimator

Irvine, CA · Hybrid

$107K - $190K/yr

... to assist in preparation and review of lump sum, unit rate and cost plus estimates and in preparation of conceptual cost estmates. Project types include water and wastewater treatment facilities ...

UNAVAILABLE

Senior Estimator

Irvine, CA · On-site

$110 - $150/hr

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)

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)

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)

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Showing results 21-40

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.

Estimator- Driver SPG

C.W. Driver

Anaheim, CA

Full-time

Re-posted 6 days ago

Job description

About Us:
Driver SPG is a specialized construction firm delivering tenant improvement, renovation, and new construction projects across diverse market sectors. Backed by the strength and resources of C.W. Driver, the company combines over 100 years of industry expertise with agile, cost-effective solutions tailored to client needs, schedules, and budgets. Known for successfully executing projects in complex, occupied, and fast-paced environments, Driver SPG provides comprehensive services from preconstruction through close-out with a focus on quality, safety, and efficiency.

Position Summary:
The Estimator is responsible for preparing accurate and comprehensive cost estimates during all phases of preconstruction. This role supports project teams by analyzing drawings and specifications, developing scopes of work, coordinating with subcontractors, and contributing to value engineering efforts. The Estimator plays a key role in ensuring competitive, well-informed bids and smooth project transitions from preconstruction to operations.

Key Responsibilities:

  • Prepare detailed quantity takeoffs and cost estimates across multiple trades.
  • Develop and assemble bid packages, scope sheets, and subcontractor comparison analyses.
  • Solicit, evaluate, and level subcontractor bids; coordinate RFIs between bidders and design teams.
  • Assist in developing conceptual and detailed estimates using historical cost data.
  • Support value engineering efforts by evaluating alternative design solutions, costs, and constructability.
  • Participate in project scheduling efforts and assist in preparing preliminary schedules.
  • Assist with development of inclusion/exclusion lists and scope definition for all trades.
  • Maintain and update internal cost history database for estimating accuracy.
  • Support the preparation of proposals, RFPs, and RFQs in collaboration with the marketing team.
  • Assist with project turnover from estimating to operations, including buyout and subcontract awards.
  • Interface with subcontractors, clients, architects, and internal teams to ensure alignment and clarity.
  • Represent C.W. Driver professionally in all interactions with external partners.

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