Mechanical Estimator

Job: Mechanical Estimator

Location: Lenexa, KS

Division: Estimating & Engineering

Support Projects. Deliver Accurate Estimates. Influence Success.


GBA Builders is seeking a Mechanical Estimator to support our Estimating and Engineering Department. In this role, you will provide constructability reviews, cost estimating, and scheduling support for major design and construction projects across commercial, industrial, life sciences, medical, and mission-critical industries.


This position requires travel to project job sites , some of which are security-regulated facilities , so a clean background check and a valid driver's license are required for entry.

What You'll Do

• Assist proposal teams on major projects across all programs and GBA companies.
• Work with Project Management and Design teams during buyout and pre-construction processes .
• Attend Charrette and design reconciliation conferences on projects over $5M (or as assigned).
• Develop estimates, budgets, quantity surveys, and proposals accurately and competitively.
• Cultivate subcontractor and supplier relationships , including seeking new partners and reviewing scopes of work.
• Assist in creating project schedules for bids and pre-construction planning.
• Participate in pre-bid conferences, site visits, bid day processes, and proposal submissions .
• Build and maintain relationships with facility managers and construction owners .
• Review and interpret plans, specifications, and schedules .
• Collaborate with Project Managers and Executives to finalize estimates and proposed schedules .

What You Bring

• Bachelor's degree in Construction or related engineering field , OR Journeyman/Master in Plumbing or HVAC , OR 7+ years of mechanical estimating experience .
• Field experience in mechanical installation projects preferred.
• Minimum 3 years of conceptual estimating and design-build estimating experience with a mechanical contractor.
• Strong proficiency with digital take-off and estimating software .
• High-level understanding of project scopes, direct and indirect costs, and pricing .
• Proficiency in Microsoft Suite and scheduling software.
• Familiarity with construction scheduling and LEED requirements .
• Strong communication skills for both internal and external collaboration.
• Initiative, professionalism, and ability to manage changing priorities and deadlines.

Physical Requirements

• Ability to communicate in person, by phone, and electronically .
• Work on a computer for extended periods (approximately 90% sedentary).
• Travel by air, car, or train ; stand and navigate construction sites as needed.
• Ability to perform light physical work (lift, file, stoop up to 10 lbs).
• May encounter loud noises or environmental temperature changes .

Why GBA Builders


At GBA, we combine technical excellence with collaboration and innovation . We provide:

• Opportunities to work on complex projects across multiple industries .
• A culture of teamwork, integrity, and client focus .
• Comprehensive benefits package including health, dental, vision, 401(k), paid time off, and more.
• Career growth and mentorship opportunities within our nationwide Estimating & Engineering teams.

Equal Opportunity Employer


GBA Builders promotes diversity and inclusion in all aspects of employment. We encourage applicants of all backgrounds to apply regardless of age, race, religion, color, sex, national origin, marital status, disability, veteran status, gender identity or expression, pregnancy status, or any other status protected by law.