Horizon MEP
What Makes an MEP Drawing Permit-Ready?
Permit delays are one of the most common reasons construction schedules slip. In many cases, the issue isn’t architectural scope — it’s incomplete or poorly coordinated MEP drawings.
So what does “permit-ready” actually mean from an Authority Having Jurisdiction (AHJ) perspective?
1. Code Compliance Is Clearly Documented
AHJs expect MEP drawings to explicitly demonstrate compliance with adopted codes such as IMC, IPC, NEC, NFPA, and local amendments. Missing references, unclear calculations, or generic notes often trigger review comments.
2. Load Calculations Are Included and Consistent
HVAC, electrical, and plumbing load calculations must align with equipment selections and schedules. Inconsistent values across drawings raise red flags during plan review.
3. Systems Are Coordinated Across Disciplines
Permit reviewers routinely flag conflicts between mechanical, electrical, plumbing, and fire protection systems. Coordinated drawings demonstrate engineering diligence and reduce RFIs during construction.
4. Life Safety Systems Are Fully Addressed
Fire alarm, sprinkler layouts, and egress-related systems must comply with NFPA standards and local fire department requirements. Missing life-safety details almost always delay approval.
Permit-ready drawings are not “minimum sets.” They are coordinated, reviewed, and structured to answer AHJ questions before they’re asked.
How Horizon MEP Supports Permit Approval
Horizon MEP prepares construction-ready MEP drawings with permitting in mind — from early code review through AHJ coordination and fast-turn revisions.
Learn more about our Engineering Services or explore On-Demand Project Support for permit resubmittals and compliance documentation.