There is a particular kind of relief that comes with finally receiving permit approval after weeks or months of drawing production and plan review, and I understand the instinct to treat that moment as the finish line. In reality, permit issuance is closer to a starting gun than a finish line, and I have seen more than a few clients lose momentum, or make avoidable mistakes, in the period right after approval simply because nobody walked them through what actually needs to happen next. If you have recently received, or are about to receive, permit approval and are wondering what comes next, this article will walk you through the real sequence of events between approval and a fully completed project.

After a decade guiding clients through this exact transition, from approved drawings to active construction, I want to break down what permit issuance actually means, what needs to happen before you can legally start construction, and the mistakes I see most often trip up owners and contractors during this stage.

What Permit Issuance Actually Means

Permit issuance means the building department has completed its review and confirmed your drawings comply with applicable codes and regulations, authorizing construction to proceed according to those approved documents. It is important to understand that your approved permit set now functions as a legal document. Construction must proceed according to what was approved, and any deviation from the approved drawings during construction typically requires a formal revision process rather than an informal field adjustment.

The Permit Card or Documentation

Most jurisdictions issue a physical or digital permit card or documentation package that must be posted or available at the job site throughout construction, along with the stamped, approved set of drawings that inspectors will reference throughout the project.

Permit Expiration and Validity Periods

Permits are not indefinitely valid. Most jurisdictions specify a period within which construction must begin, and in some cases, a requirement that inspections occur at defined intervals to keep the permit active, since a project that stalls for an extended period without any inspection activity can see its permit expire, requiring a renewal or, in some cases, an entirely new submittal.

What Needs to Happen Before Construction Legally Begins

Contractor Licensing and Verification

Depending on your jurisdiction and project type, the contractor performing the work may need to be registered with the building department specifically for this permit, separate from their general business licensing, before construction activity can legally begin.

Preconstruction Meetings

For larger commercial or multifamily projects, many jurisdictions require or strongly encourage a preconstruction meeting with the building department, reviewing inspection requirements, scheduling expectations, and any project specific conditions attached to the approval.

Site Posting Requirements

Approved permits and associated documentation typically need to be physically posted at the job site in a visible location, along with any required signage related to the project, before work begins.

Utility Coordination

For projects involving new utility connections, coordination with the relevant utility providers, which sometimes operates on a separate timeline from the building department entirely, needs to be confirmed before certain phases of construction, particularly site work and foundation activity, can proceed.

Understanding the Inspection Process

Inspection Milestones

Construction proceeds through a series of required inspections at defined milestones, typically including foundation, framing, rough in for mechanical, electrical, and plumbing systems, insulation, and final inspection, though the exact sequence and requirements vary by jurisdiction and project type.

Scheduling and Coordination

Inspections generally need to be scheduled directly with the building department, often with lead time requirements, and work frequently cannot proceed past a given milestone until the corresponding inspection has passed, making inspection scheduling a genuine sequencing factor in your overall construction timeline rather than a minor administrative task.

Inspection Failures and Corrections

When an inspection identifies a deficiency, work typically needs to be corrected and reinspected before construction can proceed past that point, and repeated inspection failures at the same milestone can meaningfully affect overall project schedule.

What Happens If You Need to Deviate From Approved Drawings

This is an area where I see genuine confusion, and sometimes costly mistakes, more than almost any other post approval topic. Once a permit is issued, construction is legally expected to proceed according to the approved drawings. If field conditions or client preferences require a change, whether a structural adjustment, a layout modification, or a change in materials that affects code compliance, this typically requires a formal revision submitted to and approved by the building department before the change is implemented, not simply communicated informally to an inspector during a routine visit.

Minor Field Adjustments

Some minor deviations may be acceptable without formal revision, depending on jurisdiction and the specific nature of the change, but what qualifies as minor is determined by the building department, not by the contractor or owner’s own judgment, which is precisely why unauthorized field changes are a genuine risk rather than a harmless shortcut.

Formal Revision Process

Meaningful changes require a revision submittal, essentially a smaller scale version of the original plan review process, focused specifically on the proposed change, which needs its own review and approval before the corresponding work can proceed.

The Insider Reality About Post Approval Mistakes

Here is something that surprises almost every client during this stage of a project. The most common and costly mistake I see after permit approval is unauthorized field changes made without going through the formal revision process, often because a change seems minor or obviously reasonable to the contractor or owner in the moment. This becomes a serious problem specifically when an inspector identifies the deviation during a routine inspection, at which point work often needs to stop until the change is either reverted to match the approved drawings or formally revised and approved after the fact, both of which cost considerably more time than simply submitting the revision before making the change in the first place.

Another frequent issue involves permit expiration on projects that experience an extended pause between approval and the start of active construction, sometimes due to financing delays, contractor scheduling conflicts, or seasonal timing considerations. Owners are occasionally surprised to discover their permit has expired during this gap, requiring a renewal process or, in more significant cases, a fresh submittal if code requirements have changed since the original approval.

A third mistake worth flagging involves inspection scheduling assumptions. Some owners and even inexperienced contractors assume inspections can be scheduled with minimal notice, similar to a routine service call, when in reality many jurisdictions require meaningful lead time, and failing to schedule inspections proactively at each milestone is a common, entirely avoidable source of construction delay.

How to Protect Your Project After Approval

Confirm your specific jurisdiction’s permit validity period and any requirements for maintaining active status, particularly if construction start might be delayed for any reason.

Establish a clear understanding upfront with your contractor about the formal revision process for any field changes, so that both parties understand deviations from approved drawings require prior approval rather than informal agreement in the field.

Build inspection scheduling lead times into your construction schedule from the outset, rather than assuming inspections can be arranged on short notice.

If a formal revision becomes necessary during construction, work with your drawing team to prepare and submit it promptly, since delaying this process typically costs more time than addressing it as soon as the need becomes clear.

Final Thoughts From the Drafting Table

Permit approval is a genuine milestone worth acknowledging, but it marks the beginning of a new phase with its own requirements and risks, not the end of the process. Understanding permit validity periods, the formal revision process for any deviations, and the realities of inspection scheduling protects you from the avoidable mistakes I see most often derail projects during what should otherwise be the most straightforward stage, actually building what was already approved.

If you need a formal drawing revision prepared for a project already under construction, or a fully coordinated permit set for a new project designed to move cleanly through approval, we would be glad to review your situation and provide a free quote within twenty four hours.