What Is a Deferred Submittal?

In California, a deferred submittal permit issue comes up when part of a project cannot be fully designed at the same time as the main permit set. Instead of holding up the entire application, the city or county may allow certain items to be submitted later for review and approval. That later package is called a deferred submittal. It is not a shortcut around plan check, and it is not automatic. The building official must allow it, and the deferred item still needs its own review before that portion of the work can be installed.

For owners, contractors, and design teams, the main value of a deferred submittal is timing. It can let the core permit process move forward while specialized components are finalized. But it also creates coordination risk. If the deferred package is incomplete, inconsistent with the approved permit set, or submitted too late, the project can stall in the field. Understanding how deferred submittals fit into California building permits helps you plan smarter and avoid expensive sequencing mistakes.

What a deferred submittal means in plain English

A deferred submittal is a portion of the design that is intentionally left out of the first permit approval package and reviewed afterward. The main permit drawings must identify that item as deferred, and the authority having jurisdiction must agree that the item can be reviewed later without undermining the safety or completeness of the original approval.

In plain English, the city is saying: “We will review the main permit now, but this specific component still needs separate approval before you use it.” The deferred item is usually something specialized, delegated to a fabricator or specialty engineer, or dependent on details that become available after initial permit submission.

Common examples can include:

• Structural steel shop drawings
• Pre-engineered trusses
• Curtain wall or storefront systems
• Fire sprinkler shop drawings
• Mechanical equipment anchorage and supports
• Solar mounting details in some project types
• Prefabricated stair or guard systems

The exact list depends on the project and the jurisdiction. One city may accept a certain scope as deferred, while another may require it in the original permit set. That is why it is important to confirm the local rule early, especially on commercial work, additions, ADUs, and structural remodels.

How a deferred submittal fits into the California permit process

The standard permit process usually starts with existing conditions, design development, permit drawings, plan check comments, corrections, and permit issuance. A deferred submittal sits inside that process rather than outside it. It does not replace permit review; it simply separates one piece of the review into a later submission window.

That distinction matters because many applicants hear “deferred” and assume “optional” or “faster.” In reality, deferred submittals only help when they are managed carefully. If your base plans are unclear about existing conditions, dimensions, structural intent, or scope limits, the city may reject the deferred approach and ask for a complete package up front. That is one reason accurate field documentation and permit-ready as-built drawings can be so important before design even starts.

A typical sequence looks like this:

• The permit drawings identify a component as deferred.
• The design professional notes the performance and code requirements for that component in the main set.
• The jurisdiction reviews the main permit package and may approve it with the deferred item excluded from the approval scope.
• The contractor, fabricator, or specialty engineer prepares the deferred package later.
• The architect or engineer of record reviews that package for consistency with the approved design.
• The deferred package is submitted to the jurisdiction for separate review and approval.
• The item cannot be installed until that deferred approval is granted.

If that sounds similar to plan check, that is because it is plan check. It is simply happening later, for a narrower scope. If you want more context on how agencies review permit sets, see what plan check is and why existing drawings matter.

Why jurisdictions allow deferred items at all

Deferred submittals exist because construction projects are not always designed in a perfectly linear way. Some components are best developed by manufacturers, specialty fabricators, or delegated engineers after the overall design parameters are known. Waiting for every last shop-level detail before submitting the full permit package can create needless delay, especially if the main building shell and code path are already clear.

Jurisdictions may allow deferred items when doing so still protects public safety and preserves review quality. The main approved drawings still need to show enough information for the city to understand the design concept, code basis, and where the deferred system fits into the project. In other words, the deferred item can be detailed later, but it cannot be a mystery.

From the city’s perspective, deferred submittals can help:

• Keep permit applications moving
• Separate specialty reviews from core architectural and structural review
• Allow delegated engineering to happen at the right stage
• Reduce resubmittals of the entire permit set when only one specialty package is lagging

From your perspective, they can help preserve schedule—but only if everyone knows who is responsible for preparing, reviewing, submitting, and tracking the deferred item.

What can usually be deferred, and what usually cannot

There is no single statewide list that applies the same way in every California jurisdiction, so local confirmation is essential. Still, there are clear patterns. Items that are highly specialized and prepared as shop drawings are more likely to qualify. Fundamental design information that affects code compliance, life safety, occupancy, area, egress, and major structural intent usually cannot be pushed off into a later package.

Items more commonly accepted as deferred

• Shop drawings for steel connections or miscellaneous metals
• Truss calculations and layouts when the base design criteria are already shown
• Fire protection shop drawings where allowed by the jurisdiction and fire authority
• Specialty glazing systems
• Equipment anchorage and seismic bracing details
• Prefabricated assemblies with delegated engineering

Items less likely to be accepted as deferred

• Basic floor plans, elevations, and sections needed for primary permit review
• Core structural design criteria or major load path decisions
• Accessibility layouts and dimensions that affect approval of the main scope
• Energy compliance information required for initial plan check
• Key life-safety details tied to occupancy or means of egress
• Existing-conditions documentation needed to understand the remodel or addition

That last point is often underestimated. On renovation work, the city first needs a clear picture of what already exists. If the jurisdiction cannot tell what is staying, what is changing, and how the proposed work connects to the existing building, it may not even get to the deferred-submittal question. Articles like do you need existing plans to pull a permit and why permits get rejected for missing existing conditions cover that issue in more depth.

Who prepares and reviews a deferred submittal permit package

A deferred submittal package is often prepared by a specialty contractor, manufacturer, fabricator, or delegated engineer, but that does not mean it goes straight to the city untouched. In most cases, the architect or engineer of record must review it first and confirm that it is consistent with the approved permit design.

This chain of review matters because the city approved the main permit based on the design team’s drawings and code assumptions. The deferred package has to fit those assumptions. If a fabricator submits a system with different loads, attachment points, dimensions, fire-resistance characteristics, or seismic behavior, the deferred submittal may trigger redesign rather than approval.

Typical parties include:

• Owner: keeps schedule priorities aligned and makes sure the item is not forgotten
• Contractor: coordinates procurement, specialty trades, and submittal timing
• Architect or engineer of record: sets design criteria in the permit set and reviews deferred documents for compliance
• Specialty engineer or fabricator: develops detailed calculations, shop drawings, and product data
• Building department: performs the jurisdictional review and approves or rejects the deferred item

On existing buildings, this workflow works better when the base drawings are reliable. FastAsBuilt supports that early stage by providing field-measured as-built drawings and measured floor plans across California, using on-site laser measurement and senior drafters to produce permit-ready CAD files in PDF and DWG. If you are trying to move a remodel, tenant improvement, ADU, or commercial project into design, you can order drawings before permit assumptions start drifting.

The risks of using deferred submittals carelessly

A deferred submittal can help a project move, but it can also create the false impression that unresolved design decisions no longer matter. They do. A deferred package that conflicts with the approved permit set can cause field delays, change orders, failed inspections, and re-review cycles that erase any time you thought you saved.

The most common problems are practical, not theoretical:

• The deferred item was never clearly identified in the original permit plans
• The permit set does not include enough design criteria for later delegated engineering
• The specialty vendor is selected too late to meet the construction sequence
• The city requires separate intake, fees, or review routing that was not built into the schedule
• The deferred package changes dimensions or loads that affect already-approved work
• Field installation starts before the deferred approval is issued

Another common issue is timeline drift. Many project teams focus on permit issuance as the finish line, when it is really a milestone. If a critical deferred item is needed early in construction, its later review can become the real schedule driver. For broader context, see how long it takes to get a building permit in California. The answer often depends as much on coordination quality as on agency speed.

How to show deferred items correctly on your permit plans

If you think part of your project may be submitted later, that should be discussed before permit filing, not after comments come back. The main permit set should identify the deferred item plainly and include enough information for the reviewer to understand what the later package will cover. The plans should also show the design criteria the deferred system must meet.

Good permit sets typically make the deferred condition understandable by including:

• A clear note identifying the item as deferred
• The applicable performance requirements
• Loads, spans, attachment assumptions, or support conditions as applicable
• References to related sheets and details
• Coordination notes showing who is responsible for delegated design
• Any limits on fabrication or installation before approval

This is where drawing quality matters. If the approved set is vague, the city may ask for more complete documentation before allowing the permit to move ahead. That is especially true on remodels where existing framing, wall locations, roof geometry, and utility conditions are not well documented. If you are starting from incomplete records, it helps to first understand what as-built drawings are and why they often anchor the rest of the permit package.

Deferred submittals on remodels, tenant improvements, and existing buildings

Deferred submittals are often discussed in ground-up construction, but they matter just as much on existing buildings. In tenant improvements, restaurant upgrades, medical office reconfigurations, and older residential remodels, specialty systems may depend on field verification that happens after demolition or exposure. Even then, the city still needs enough baseline information to understand the legal existing condition and the proposed scope.

On existing buildings, deferred packages often become harder because hidden conditions can force redesign. If the permit set assumed one structural support condition and field exposure reveals something else, the deferred item may need to be redone. That does not mean deferred submittals are a bad idea. It means they require a realistic record of the building before design proceeds.

This is particularly relevant in California, where local jurisdictions often scrutinize remodels for structural changes, accessibility triggers, fire and life safety impacts, and energy compliance. Depending on the project, reviewers may also look at the California Existing Building Code pathway, which can affect how alterations are evaluated. Local interpretations vary, so it is smart to confirm expectations with the building department early and coordinate your design team around those assumptions.

How deferred submittals interact with inspections and field work

Many project problems happen after permit issuance, when crews assume a deferred item can be installed because the overall permit is already active. Usually, that is not allowed. The approved main permit does not authorize installation of the deferred component until that separate review is complete and approval is issued.

That affects procurement and construction sequencing. You may be able to start demolition, rough framing, or other work under the main permit, but you still need the deferred approval before that specialty system is installed or covered up. Inspectors may ask to see the approved deferred documents in the field, especially for structural or life-safety-related items.

To avoid inspection trouble:

• Track each deferred item in your permit log
• Confirm whether the jurisdiction assigns a separate submittal number or approval letter
• Do not assume vendor shop drawings count as approved permit documents
• Make sure field crews know which items are awaiting city approval
• Keep the latest stamped or approved deferred package on site if required

If your project relies on as-built verification before finalizing a specialty system, getting those measurements early can reduce downstream surprises. FastAsBuilt offers 2D as-built plans starting at $900 for up to 1,500 square feet, then $0.50 per square foot, with one revision and typical 48–72 hour delivery. For more complex visualization and coordination, 3D as-built plans start at $1,500, then $1.00 per square foot, and include a 3D model plus 2D floor plans, elevations, and sections, with two revisions and typical 3–5 business day delivery. Commercial work, ADUs, SB9 projects, and tenant improvements are quoted individually.

Turnaround times are estimates and may vary based on project complexity and scheduling.

Frequently asked questions

Is a deferred submittal the same as a separate permit?

Not exactly. A deferred submittal is usually tied to the main permit and reviewed after the main application, but local procedures vary. Some jurisdictions may process it under the original permit record, while others may give it a separate intake or tracking number. Either way, it still requires approval before that deferred scope can be installed.

Does a deferred submittal make permit approval faster?

Sometimes, but only for the initial permit stage. It can help the main permit move forward when a specialty item is not ready yet. However, it does not eliminate review time. It shifts part of the review later in the project. If that deferred item is on the critical path, the total project timeline may not improve at all.

Can you decide to defer an item after plan check starts?

Sometimes, but it is much cleaner to identify deferred items before the first submission. If you try to reclassify a missing design component as “deferred” after reviewers ask for it, the jurisdiction may refuse and require a full correction to the main permit set. Early discussion with the design team and building department is the safer approach.

Do deferred submittals matter on small residential projects?

They can, though they are more common on commercial or structurally complex work. Even on residential projects, pre-engineered trusses, specialty stairs, or certain delegated components may be handled later if the jurisdiction allows it. The simpler the project, the more likely the city may prefer to see everything in one permit package.

What is the biggest mistake people make with a deferred submittal permit?

The biggest mistake is treating it like a way to avoid complete design coordination. A deferred submittal works best when the approved permit set already defines the system’s role, limits, and performance criteria. If core decisions are still unresolved, “deferred” usually becomes “delayed.”

Bottom line

A deferred submittal permit approach can be useful in the California permit process when a specialized component is not ready at initial filing, but it only works when the jurisdiction allows it and the base permit set is strong. The city still needs a clear, reviewable project, and the deferred item still needs approval before installation. If you are planning a remodel, tenant improvement, ADU, or other project on an existing building, accurate existing-condition drawings can make the entire permit path—including any deferred items—far easier to manage.