Who Is to Blame for a Construction Defect?

On Behalf of | Feb 20, 2025 | Construction Law

When a construction project doesn’t meet expectations—or worse, results in structural failures—fingers start pointing fast. No one wants to hear that a client is unhappy, especially when a construction defect is alleged. However, determining liability isn’t always straightforward.

A construction defect can stem from a variety of sources, and before accepting blame (or passing it along), it’s critical to understand who might be responsible. Let’s explore the key players who could be held accountable.

1. Architects & Engineers: The Blueprint for Success or Failure?

Construction projects start with design, and a faulty blueprint can lead to significant issues down the line. If an architect or engineer makes an error in calculations, structural planning, or material specifications, even the most skilled contractors can’t build a defect-free structure.

Common design-related defects include:

  • Structural instability due to miscalculations in load-bearing capacities
  • Water intrusion issues stemming from poor drainage or flawed roofing design
  • Non-compliance with building codes, which can lead to legal complications down the road

While contractors are responsible for executing the design, they generally trust that the plans they receive are correct. If a defect arises due to flawed design, the liability may rest with the architect or engineering firm.

2. General Contractors: The Overseers of Quality

The general contractor serves as the central figure in a construction project, overseeing subcontractors, ensuring compliance with plans, and managing the workflow. While they might not perform every task themselves, they are ultimately responsible for the project’s execution.

A contractor may be liable for defects caused by:

  • Failure to follow design specifications
  • Substandard workmanship in areas they directly handled
  • Inadequate supervision of subcontractors

Even if a contractor believes they executed the job properly, they may still face legal claims if defects arise under their management.

3. Subcontractors: When Workmanship Goes Wrong

Many construction projects rely on subcontractors for specialized tasks, such as plumbing, electrical work, or masonry. If a subcontractor’s work is defective—whether due to poor craftsmanship or the use of incorrect materials—it could compromise the entire structure.

While general contractors have a duty to hire qualified professionals, they may not always be directly responsible for a subcontractor’s mistakes. In some cases, liability may fall on the individual subcontractor or their employer.

4. Material Suppliers: When the Building Blocks Fail

Even when everyone follows the plans and executes their work correctly, construction defects can still occur due to faulty materials. A defective or damaged product can compromise an entire structure, often in ways that aren’t immediately apparent.

Common material-related defects include:

  • Weakened steel beams that pass visual inspection but fail under load
  • Substandard concrete mixtures that crack prematurely
  • Defective plumbing or electrical components that lead to safety hazards

In such cases, liability may fall on the manufacturer, distributor, or supplier. Proving that a defect originated with the material itself—rather than how it was installed—often requires expert analysis and thorough documentation.

How to Protect Yourself from Construction Defect Claims

Regardless of your role in a project, allegations of construction defects can be costly and damaging to your reputation. To mitigate risk:

  • Maintain thorough documentation of all contracts, design plans, and communications
  • Conduct quality checks at every phase of the project
  • Ensure compliance with building codes and regulations
  • Clearly define responsibilities in contracts to allocate liability properly
  • Seek legal counsel at the first sign of a dispute

If you’re facing a construction defect claim—or want to ensure you’re protected—our team at Lesak, Hamilton, Calhoun & Pontieri, Attorneys at Law is here to help. We provide strategic legal guidance to contractors, architects, and suppliers navigating complex construction disputes.