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Construction projects rarely fail because of one big mistake. More often than not, they stall due to a series of minor system coordination issues that surface at the worst possible time.
A common scenario: your team submits fire protection system drawings for approval, only to receive comments during AHJ review that require revisions, resubmission, and another round of waiting. Or worse, your plans are approved, construction is finalized, and an inspector flags something in the design that doesn’t align with the relevant code intent. Now you’re modifying installed systems, opening walls, preserving finishes, and paying for work twice.
When these conflicts emerge late in the design phase or during inspections, changes are most expensive and disruptive. And because fire protection systems touch nearly every construction discipline, even a small issue can trigger a domino effect across the entire project team.
In this context, a third-party review refers to an independent evaluation of a project’s fire protection systems, conducted by a specialist who is not part of the original design team.
This review focuses on verifying that the project aligns with applicable building and fire code requirements and that all fire alarm, sprinkler, and smoke control systems are properly designed.
Unlike an AHJ review, which occurs near the end of the design process, a third-party reviewer can be brought on earlier and works directly alongside the project team. Their goal is simple:
Third-party reviews are often conducted as a one-time consulting service. They provide expert-level validation without requiring the project team to fully outsource fire protection system designs, making them a cost-effective way to add confidence without adding complexity.
Most construction conflicts tied to code issues show up in two critical phases:
At the end of the design phase, you submit your plans to your AHJ. Instead of seamless approval, you might receive comments (sometimes called a Letter of Defect, depending on the jurisdiction).
Each round of comments means:
The process of rejection and resubmission can repeat multiple times, delaying critical approvals and pushing back project timelines. With fully or partially occupied buildings, there is an additional risk of missing occupancy-deadline promises, and the revenue associated with that timing.
Once plans are approved, most teams assume the compliance box is checked. But compliant designs don’t always guarantee system installations are up to code upon construction.
Inspectors may interpret building conditions differently from plan reviewers or identify issues that weren’t clearly communicated in the drawings. This can lead to:
At this stage, the financial impact of noncompliance is significantly higher. You’re not just redesigning and reconnecting with siloed construction teams — architects, mechanical, electrical, and plumbing (MEP) professionals. You’re undoing completed work while trying to preserve finishes.
Third-party reviews are designed to identify coordination issues early before they trigger delays, rework, or inspection failures. These checks ensure that systems not only look correct on plans but also will perform as intended.
Some of the most common issues they uncover include:
Fire protection systems don’t operate in isolation. They rely on coordination between multiple systems, including but not limited to:
If these interfaces aren’t properly considered from a holistic function perspective, additional equipment and wiring may be required after installation has already begun.
Even when systems are conceptually correct, there are many steps and cross-trade handoffs between master planning and installation. Late-stage realizations could include:
Fire alarm and sprinkler systems must meet strict coverage requirements. Devices placed too far apart create gaps in protection, but devices placed too close may violate spacing limits.
Smoke control systems are particularly complex. Common issues include:
Even if technical documentation is thorough from the early stages onward, there is an inherent risk of human error across the board. An expert with a fresh perspective, access to technology-enabled tools, and a deep familiarity with the latest code can perform and verify:
Related: The Role of Artificial Intelligence in Fire Protection Engineering
A common misconception is that third-party reviewers replace the AHJ. They don’t.
The AHJ is responsible for:
The third-party reviewer:
In some jurisdictions, the AHJ may require a third-party review for complex or specialized systems that may lack standard certification. In those cases, the reviewer acts as an extension of the AHJ while still coordinating with the project team.
Early involvement allows teams to incorporate feedback before designs are finalized. If you want to avoid the domino effect of late-stage changes, consider identifying a reviewer in the initial master planning and design phases.
The process itself is not burdensome and can typically be completed in a matter of weeks, depending on project size and complexity.
Third-party reviews are beneficial across all project types, but their impact increases with complexity. They are especially valuable when:
From a cost perspective, a third-party review is typically far less expensive than full fire protection consulting services and can be sufficient to prevent significantly higher downstream costs.
Threats to fire and life safety don’t usually start in construction; they arise from coordination gaps during design.
To avoid costly surprises, engage a third-party reviewer early who can prevent coordination gaps from turning into construction conflicts. A focused review can help your team align on the right building and fire code approach before you find yourself with a completed build that is noncompliant.
Related: How Do Building & Fire Codes Differ for New Construction vs. Existing Buildings?
Untangle Code Complexity. Schedule a Call.
This post is intended for educational purposes only. Please refer to the latest ICC, NFPA, and local jurisdictional documents to understand current building and fire code requirements. Consult a licensed fire protection engineer for guidance specific to your project.
Steven Venditti, P.E. President | Sparc
Steven Venditti, P.E., has a Bachelor of Science and a Master of Engineering in Fire Protection Engineering from the University of Maryland. Mr. Venditti is a Professional Engineer (P.E.) licensed in multiple states. He has over 21 years of experience in fire protection engineering, including sprinkler and fire alarm system design, performance-based design of smoke control systems utilizing computer fire modeling, as well as fire investigations, code consulting, and interpretation. He has applied these skills to various facilities, such as office buildings, hotels, assembly spaces, and mixed-use complexes. Mr. Venditti has extensive expertise and knowledge of various codes and design standards, including NFPA, IBC, and local building codes.
