What to Look for in a General Contractor vs. a Construction Manager

By JOHN BENNETT DONALDSON 

When embarking on a commercial construction or development project, one of the most critical decisions you’ll make is choosing the right leadership for your project.

Should you work with a general contractor or a construction manager? While the two roles share similarities, their responsibilities, processes and the value they bring to your project differ in significant ways. Understanding these differences will empower you to make the best choice for your business objectives.

Let’s explore the roles of general contractors and construction managers, the advantages and challenges of each and provides a structured roadmap to help you choose the right partner for your next project.

Understanding the Role of a General Contractor

What Does a General Contractor Do?

A general contractor (GC) is the operational backbone of many construction projects. They are typically on the job after the design phase is complete and are responsible for executing the project based on the existing plans. The GC oversees day-to-day construction activities, coordinates labor and subcontractors, monitors timelines and ensures the project adheres to cost parameters.

Key Responsibilities of General Contractors

• Project Execution: General contractors are involved primarily in the construction phase, taking charge of site operations, labor scheduling and subcontractor management.
• Cost and Budget Management: The GC operates with a fixed bid model based on the designs provided, making them financially accountable for staying within budget.
• Timeline Adherence: GCs ensure that the project progresses according to schedule, minimizing delays through efficient resource coordination.
• Quality Control: The GC’s routinely inspect completed work to ensure it meets project specifications, safety regulations and client expectations.

Benefits of Hiring a General Contractor

1. Turnkey Solution: A GC simplifies the process by acting as the single point of contact for all construction-related tasks.
2. Fixed Costs: Their bid-based model provides financial security and cost predictability.
3. Established Vendor Network: GCs come with pre-existing relationships with skilled labor, subcontractors and material suppliers, which can streamline operations.

Challenges of the General Contractor Model

• Limited Design Input: Traditional GCs typically enter the process after the design phase, which can sometimes result in disconnects between the design intent and construction execution. However, this challenge is eliminated when you choose a design-build firm like J.B. Donaldson that integrates both design and construction expertise from project inception.

Understanding the Role of a Construction Manager

What Does a Construction Manager Do?

A construction manager (CM) operates with a more limited scope than many clients realize. Construction managers usually get involved after plans are complete and have much less control over the general project direction. They typically work on projects that are already planned and ready to build, often with predetermined subcontractors, leaving the CM to primarily manage existing arrangements rather than drive strategic decisions.

Key Responsibilities of Construction Managers

• Project Administration: CMs typically focus on administrative oversight of pre-selected subcontractors and established project parameters, with limited input on major project decisions.
• Limited Collaboration: While marketed as collaborative partners, CMs often work within constraints set by others, rather than providing the comprehensive project leadership that design-build contractors offer.
• Cost Monitoring: CMs operate on a fee-based model, providing updates on spending but with limited ability to influence major cost-driving decisions that were made before their involvement.
• Administrative Oversight: From their entry point through project completion, CMs offer monitoring services rather than comprehensive project leadership.

Benefits of Hiring a Construction Manager

1. Administrative Support: CMs can provide project documentation and progress reporting for owners who prefer detailed administrative oversight.
2. Fee Transparency: Fee-based models offer clarity on management costs, though this transparency may come at the expense of overall project cost control.
3. Reduced Owner Risk: CMs can help distribute certain project risks, though this often comes with reduced control over project outcomes.

Challenges of Construction Management

• Higher Overall Costs: Fee-based systems often result in higher total project costs, particularly when combined with change orders and scope adjustments that weren’t anticipated during the limited planning phase.
• Limited Strategic Input: CMs typically enter after critical design and planning decisions have been made, reducing their ability to provide value engineering and cost optimization.
• Increased Owner Responsibility: Because CMs have limited authority over major project decisions, business owners must remain heavily involved throughout the process.
• Fragmented Project Leadership: The separation between design, planning and construction management can lead to communication gaps and coordination challenges.

Side-by-Side Comparison of General Contractors and Construction Managers

Key Differences at a Glance

How to Choose the Right Partner for Your Project

The decision to engage a GC or CM largely depends on your project’s complexity, goals, and your level of desired involvement. Below, we share a strategic approach to assessing your needs:

1. Define Your Project Scope

Consider the size, complexity and unique requirements of your project. Large-scale projects like hospitals or manufacturing facilities typically benefit from early involvement and comprehensive project leadership. Projects with well-defined parameters may work effectively with CM oversight, while those requiring integrated expertise benefit most from design-build general contracting.

2. Establish Budgetary Constraints

A fixed bid model from a GC provides cost predictability and financial security. If you prefer transparency in management fees and are comfortable with more hands-on involvement, a CM’s fee-based approach may align with your preferences.

3. Evaluate Need for Collaboration

If you want genuine strategic partnership and comprehensive project leadership, a design-build GC provides integrated expertise from concept through completion. For owners seeking administrative oversight of predetermined plans, a CM may suffice.

4. Consider Risk Factors

Projects requiring comprehensive risk management and strategic adaptability benefit significantly from design-build general contractors who can address challenges proactively. CMs, with their limited scope and late entry into projects, often cannot provide the same level of risk mitigation, unless they have the right expertise in risk mitigation.

The decision between a general contractor and construction manager depends on your specific project needs and preferred level of involvement. By understanding the roles, assessing your project’s requirements and aligning with a partner that delivers on both precision and collaboration, you’ll set the foundation for a successful build.

John Bennett Donaldson III is president and owner at J.B. Donaldson Company.