Process Mechanical Estimator – Water & Wastewater Systems

McCarthy Building Companies, Inc.; Kansas City (KS); On-site; USD 80,000 - 93,000; Full time

Job summary

McCarthy Building Companies, Inc. seeks a Process Mechanical Estimator for Water & Wastewater construction to develop accurate, competitive cost models focusing on process mechanical piping and equipment.

You will review drawings, specifications, and P&IDs, perform quantity takeoffs, coordinate vendor pricing, and build detailed estimates to support GMP and buyout planning, working with design partners, operations, and procurement.

Qualifications

• Bachelor’s degree in Construction Management, Engineering, or related degrees required.
• Minimum of 2–7 years' experience in estimating process mechanical piping and equipment for water or wastewater facilities.
• Ability to interpret drawings, specifications, flow diagrams, and P&IDs.
• Working knowledge of common piping materials and related components.
• Understanding of scope development, material pricing, labor buildup, and constructability.
• Strong organization, accuracy, and follow-through.
• Strong communication and coordination skills with internal teams, vendors, and operations partners.
• Proficiency in spreadsheet-based estimate support and reporting.
• Experience estimating process mechanical piping and equipment installation for water or wastewater projects.
• Familiarity with self-perform construction, procurement workflows, and shop or fabrication coordination preferred.
• Experience using Quote Express, WinEst, BuildingConnected, Join, or similar tools preferred.
• Understanding of GMP, CMAR, design-build, or progressive delivery environments preferred.

Responsibilities

• Review drawings, specifications, contract documents, and P&IDs to define complete process mechanical scope.
• Perform quantity takeoff for piping systems, valves, fittings, supports, instruments, penetrations, and related components.
• Set up and maintain takeoff files, estimating structure, system zones, specifications, job items, assemblies, and reports.
• Solicit and evaluate vendor, fabricator, and subcontractor pricing.
• Coordinate with other discipline estimators to prevent scope gaps and duplication.
• Partner with operations to review installation approach, labor assumptions, productivity, sequencing, and means and methods.
• Build estimate detail and support summaries, reconciliations, internal reviews, and owner deliverables.
• Participate in estimate reviews, scope reconciliation, design review, trending, and GMP or buyout planning.
• Support development of qualifications, clarifications, assumptions, and scope narratives.
• Maintain organized estimate files, backup, and historical reference information.
• Support project handoff to operations and reconciliation through late design and early construction as needed.

Skills

Process mechanical systems

Drawings & P&IDs interpretation

Estimating with spreadsheets

Project coordination

Communication

Self-perform familiarity

Procurement workflows

GMP/CMAR knowledge

Education

Bachelor’s degree in Construction Management, Engineering, or related degrees

Tools

Quote Express

WinEst

BuildingConnected

Join

Job description

McCarthy Building Companies, Inc. seeks a Process Mechanical Estimator for Water & Wastewater construction to develop accurate, competitive cost models focusing on process mechanical piping and equipment.

You will review drawings, specifications, and P&IDs, perform quantity takeoffs, coordinate vendor pricing, and build detailed estimates to support GMP and buyout planning, working with design partners, operations, and procurement.