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Assistant Estimator Jobs in Santa Rosa, CA (NOW HIRING)

Babcock & Wilcox

Estimator

Napa, CA · On-site

This person is very familiar with power plant equipment and mechanical estimating and may assist in the training and development of less experienced Estimators. * Capable of completing estimates for ...

Sandbank Construction, Inc.

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Construction Estimator

Novato, CA · On-site

$65K - $125K/yr

The Construction Estimator will be responsible for preparing accurate and competitive project ... Communicate with vendors, subcontractors, architects, and project managers. * Assist with project ...

Broderick General Engineering

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Construction Estimator

Sonoma, CA · On-site

$100K - $160K/yr

... lists. * Assist in contract negotiations and review contractual obligations related to project ... Minimum 3 years experience in estimating Civil Construction up to $10M * Proficiency in ...

TekSky

Construction Estimator

Sonoma, CA · On-site

... lists. * Assist in contract negotiations and review contractual obligations related to project ... Minimum 3 years experience in estimating Civil Construction up to $10M * Proficiency in ...

McGuire & Hester

Estimator- Landscape

Bodega Bay, CA · On-site

$135K - $166K/yr

... team. * Assist operations team with change order pricing as needed. * Participate in project ... In addition, estimators must be able to calculate volume, area and tonnage. Planning and Organizing ...

McGuire & Hester

Estimator- Landscape

Bodega Bay, CA · On-site

$135K - $166K/yr

... team. * Assist operations team with change order pricing as needed. * Participate in project ... In addition, estimators must be able to calculate volume, area and tonnage. Planning and Organizing ...

Nova Group, Inc.

Senior Construction Estimator

Napa, CA · On-site

Train estimating department in the use of select programs. * Assist in the negotiation of contracts with the operations team for the subcontractors and suppliers. * Ensure all estimates comply with ...

Sysco Corporation

Project Estimator

Santa Rosa, CA · On-site

$42/hr

Ability to estimate projects and proposals independently, read blueprints, architectural and CAD ... Troubleshoot internal and external issues and assist in warranty/service requests if necessary

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Assistant Estimator information

See Santa Rosa, CA salary details

$17

$27

$46

How much do assistant estimator jobs pay per hour?

As of Aug 24, 2026, the average hourly pay for assistant estimator in Santa Rosa, CA is $27.04, according to ZipRecruiter salary data. Most workers in this role earn between $20.77 and $29.42 per hour, depending on experience, location, and employer.

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 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 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 is an assistant estimator?

An assistant estimator is a construction or engineering professional who supports senior estimators by gathering data, preparing cost estimates, and assisting with bid proposals. They often use estimating software and need strong math, organizational skills, and knowledge of construction materials and methods. This role typically involves working in an office environment and may require relevant certifications or training.

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

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

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

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

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

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

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

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

Assistant Estimator jobs near you
Infographic showing various Assistant Estimator job openings in Santa Rosa, CA as of August 2026, with employment types broken down into 2% As Needed, 73% Full Time, 20% Part Time, 1% Temporary, and 4% Contract. Highlights an 98% Physical, 1% Hybrid, and 1% Remote job distribution, with an average salary of $56,251 per year, or $27 per hour.

Estimator

Babcock & Wilcox

Napa, CA • On-site

Full-time

Re-posted 20 days ago

Babcock & Wilcox rating

8.7

Company rating: 8.7 out of 10

Based on 14 frontline employees who took The Breakroom Quiz

57th of 494 rated machine equipment manufacturers

Job description

The Estimator is an advanced role responsible for developing estimates and estimating data for more complex BWCC construction projects. This individual utilizes extensive knowledge of large industrial construction projects to provide timely and accurate estimates of construction costs. This person is very familiar with power plant equipment and mechanical estimating and may assist in the training and development of less experienced Estimators.

  • Capable of completing estimates for large and complex construction projects with minimal oversite or supervision.

  • Estimates contract change orders as they arise prior to mobilization and as required during the project. Completes final as-sold cost estimate.

  • Reviews RFQ drawings in detail and performs accurate quantity takeoffs of boiler components, ductwork, piping and structural steel.

  • Updates and supports the maintenance of estimating data to be utilized in BWCC construction estimates.

  • Review estimates for scope and data application accuracy. May prepare special estimates.

  • Read specifications to ensure costs are adequately covered. Suggests clarifications and reviews final proposal clarifications.

  • Capable of analyzing projects and suggesting the appropriate supervision and indirect labor required. Works with Operations to finalize these allowances.

  • Instruct estimating personnel in the proper use of the estimating data. Conduct evaluations to review and validate estimating data. 

  • Prepare estimating procedures for products not covered by estimating data or special estimates for these products.

  • Prepare material and subcontract RFQ packages and reviews and analyzes subcontract and material quotes.  Works with Operations and Proposal Management to finalize allowances to be included in the final estimate.

  • May prepare various statistical reports that analyze manhour returns, suggests updates to the estimating book rates if required.

  • Train, direct, guide, and serve as a mentor for less experienced estimators.

  • Assist in the preparation and updating of computer estimating programs.

  • Utilize extensive knowledge of estimating and BWCC construction projects to produce timely and quality results that support organizational goals

  • Perform trend analysis, reviews cost data and estimate information. Determine and estimates project cash flow.

  • Perform all other duties as assigned

  • Minimum Bachelor's of Science

  • 8 years' experience in Estimating, or equivalent experience in Industrial or Commercial construction, Technical Design, Engineering, Purchasing and/or related functions.

  • Extensive knowledge of industrial construction projects

  • Knowledge of construction estimating and proposals

  • Excellent written and verbal communication skills

  • Ability to read drawings

  • Familiar with Microsoft Excel and Office Suite

  • A working knowledge of power plant and mechanical equipment.

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