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Plan Review Submittal Requirements for Commercial Tenant Improvements and/or Additions, page 1

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What this form asks for

The AI fills all of it, from your answers or your documents.

This form is a comprehensive checklist issued by the Placer County Building Services Division in California. It outlines all the required documents, plans, and specifications—such as site plans, floor plans, and structural calculations—that must be submitted for a commercial tenant improvement or addition permit application. Following this checklist is crucial to ensure the submittal is complete, preventing delays in the plan check process. Today, this form can be filled out quickly and accurately using AI-powered services like Instafill.ai, which can also convert non-fillable PDF versions into interactive fillable forms.

The AI checks your answers before you download

12 checks built for this form, so a wrong date or a missing answer is caught before anyone else sees it.

Requires Permit Number for Submission

This check ensures that the 'Permit Number' field is not left empty. The permit number is the primary identifier for the project and is essential for tracking, routing, and filing the application correctly. The form submission will be blocked until a permit number is entered.

Validates Permit Number Format

Checks if the entered Permit Number conforms to the standard format used by the Placer County Building Services Division. This ensures data consistency and proper record linkage with the county's systems. If the format is incorrect, the system should reject the entry and prompt the user to enter a valid number, possibly providing an example format.

Ensures All Submittal Requirement Checkboxes are Ticked

This validation verifies that every checkbox in the submittal requirements list is marked as 'checked'. The form serves as a certification that all listed documents are included, and an incomplete checklist signifies an incomplete application. Failure to check all boxes should prevent final submission and highlight the missing items to the user.

Confirms Applicant Signature is Present

Verifies that the signature field has been electronically or physically signed before submission. A signature is legally required to certify the completeness and accuracy of the submittal. The form cannot be considered officially submitted without a signature, and the system should block submission until it is provided.

Validates Application Certification Date Format

This check ensures the 'Application Certification Date' is entered in a valid and recognizable date format, such as MM/DD/YYYY. Consistent date formatting is crucial for accurate record-keeping and processing timelines. An invalid format will trigger an error message requesting the user to correct the date.

Ensures Application Certification Date is Not in the Future

This validation confirms that the 'Application Certification Date' is not a future date. Certifying a submission for a future date is logically impossible and indicates a data entry error. If a future date is entered, the system will display an error and require the user to input the current or a past date.

And 6 more checks
  • Enforces Checklist Completion Before Final Signature
  • Confirms Inclusion of Signed Structural Calculations
  • Confirms Inclusion of Signed Truss Calculations
  • Verifies Accessibility Plan is Professionally Prepared
  • Confirms Inclusion of Signed Title 24 Calculations
  • Validates Assessor's Parcel Number (APN) Format

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How to Fill Out 107C Online for Free in 2026

What the AI walks you through.

  1. Navigate to Instafill.ai and upload or select the Placer County Plan Review Submittal Requirements form.
  2. Use the AI assistant to populate the header information, including the Permit Number if available.
  3. Systematically review each checklist item, from the Title Sheet to Structural documents, checking the box for each completed and included part of your plan set.
  4. Verify that all associated documents, such as Title 24 Energy Calculations and wet-signed structural calculations, are prepared and ready for submission.
  5. Review the entire checklist to ensure all required items are marked as present and complete.
  6. Electronically sign and date the form to certify your understanding and compliance with the submittal requirements.
  7. Download the completed checklist to include with your two complete sets of plans for submission to the Placer County Building Services Division.

Common Mistakes in Completing 107C

The ones the AI is built to catch.

Forgetting 'Wet-Signed' or Stamped Documents
Applicants often submit photocopies or digital signatures instead of the required 'wet-signed' and 'wet-stamped' documents for structural calculations and truss designs. This happens due to misunderstanding the requirement or for convenience. Submittals lacking original ink signatures and professional stamps are considered incomplete and will be rejected, halting the plan check process until the correct physical copies are provided. To avoid this, ensure all specified documents are physically signed and stamped in ink by the licensed professional before submission.
Incomplete Title Sheet Information
The Title Sheet often lacks one or more required elements like the Assessor’s Parcel Number (APN), scope of work, or occupancy group. This oversight usually occurs when rushing and failing to use the form's description as a final checklist for the drawing itself. An incomplete Title Sheet prevents the reviewer from verifying basic project data, leading to immediate requests for information and significant delays. Always cross-reference every item listed in the form's Title Sheet requirement against your prepared drawing before submission.
Mismatched Information Across Plan Sheets
Key project data such as the address, APN, or square footage is often inconsistent across different documents like the Title Sheet, Site Plan, and structural calculations. This error arises when multiple professionals work independently without a final consistency check. Mismatched data forces reviewers to issue correction notices to clarify the correct information, delaying the entire project. To prevent this, perform a final audit of all documents to ensure key data points are identical everywhere.
Submitting an Incorrect Number of Plan Sets
The form explicitly requires 'two (2) complete sets of plans and documents,' but applicants frequently submit only one. This mistake stems from not carefully reading the instructions at the top of the form. The building division requires multiple copies for distribution to different departments, so an incorrect count renders the submittal incomplete and stops the process until the missing sets are provided. Always double-check the submission quantity requirements before heading to the permit office.
Using Incorrect or Missing Plan Scales
Plans are often submitted with scales that do not match the specific requirements, such as 1/4" for floor plans or 1"=20' for site plans. This happens when designers use their default template settings without verifying the jurisdiction's specific rules. Plans with incorrect scales cannot be properly evaluated by the reviewer and will be rejected, requiring a complete resubmittal of corrected drawings. Carefully review the scale requirements on the application form and confirm all drawings comply.
Overlooking Adjacent Tenant Space Information
Applicants frequently forget to specify the 'use of adjacent tenant spaces/buildings' on the floor plan. This is often overlooked because the focus is solely on the project's own space. This information is critical for assessing fire-separation, exiting, and occupancy compatibility, and its absence will result in a correction notice from the plan reviewer. To avoid this delay, investigate and clearly label the use of all adjoining spaces on the floor plan.
Providing Vague Scope of Work Descriptions
The 'scope of work' on the Title Sheet is often described too vaguely, for example, as just 'Tenant Improvement.' This happens when applicants assume the drawings are self-explanatory. A vague scope forces the plan reviewer to guess the project's intent, which can lead to misunderstandings and requests for clarification. To prevent this, provide a detailed narrative that clearly lists all major changes, such as 'Constructing three new offices and relocating one restroom.'
Incomplete Accessibility Plans and Details
Submissions often lack the detailed accessibility information required, such as specific clearances on the floorplan, ramp slope details, or a completed accessibility upgrade worksheet. This occurs when the design professional is not fully versed in California's complex accessibility codes. Since accessibility is a critical compliance point, incomplete plans will lead to major revisions and significant project delays. Ensure your registered design professional explicitly details all required accessibility features as listed on the submittal form.
Checking Boxes for Missing Documents
An applicant may check a box on the submittal checklist, certifying a document is included, when it is actually missing from the package. This can happen due to disorganization or a misguided hope that the omission will go unnoticed. This immediately invalidates the certification, destroys credibility, and causes the application to be rejected as incomplete. To avoid this, use the form as a physical checklist, checking each box only after the corresponding document is placed in the final submittal package.
Leaving the Permit Number Blank
Applicants often leave the 'Permit #' field blank, assuming it will be assigned upon submission. However, some jurisdictions require a permit application to be initiated and a number assigned before the plan review package is formally submitted. Submitting without this key identifier can lead to the package being rejected or delayed until the proper number is obtained and added. Always clarify the county's workflow to determine if a permit number is needed prior to this submittal.

Frequently Asked Questions About 107C

 

Is it really free for 7 days?
Yes. You pay $0 today. Cancel before Nov 1 and you are never charged. Keep it, and it is $19.99 a month for 5 fills of your 107C.
Can I fill other forms too?
This plan is for your 107C: your own AI agent fills it as often as 5 times a month. To fill other forms and upload your own, choose a Professional plan from your account.
How do I cancel?
From your account, in two clicks, any time. No email, no call.
How does the AI fill out 107C?
You answer a few questions in plain words, or upload a document you already have. The AI reads what you give it and puts each answer into the right field of 107C, on every page, in seconds. It checks the answers against the form's own rules, and you review and change anything before you download, print or sign.
What happens to my information?
It is encrypted in transit and at rest, and it is never used to train AI.
What is the purpose of this form?
This form is a checklist that outlines all the required documents and plans you must submit for a commercial tenant improvement or addition permit in Placer County. It ensures your application is complete before the official plan review process begins.
Who needs to fill out this Plan Review Submittal form?
Anyone applying for a building permit for a commercial tenant improvement or an addition to a commercial building in Placer County must complete and submit this checklist along with their plans and supporting documents.
How many sets of plans do I need to submit?
You are required to submit two complete sets of all plans and documents listed on the form. This ensures all necessary departments have the required information for a thorough review.
What happens if I submit an incomplete application?
Incomplete submittals will delay the plan check process. Your official application date, which starts the review timeline, is not set until all required items have been received by the Building Division.
Where do I get the Permit Number to write on the form?
The Permit Number is assigned by the Placer County Building Services Division when you initiate your application. If you do not have one yet, the office staff will typically fill it in upon submission.
Are there specific size and scale requirements for the plan drawings?
Yes, plans should be drawn to 1/4”, 3/16”, or 1/8” scale, with a recommended sheet size of 24”x 36”. The site plan may use a different scale based on the lot size.
Who is qualified to prepare the structural plans and calculations?
All structural plans and calculations must be prepared, wet-stamped, and signed by a licensed California architect or engineer. You must submit two sets of these signed calculations.
What is required for the 'Accessibility Requirements' section?
This section must be completed by a registered design professional, like an architect or civil engineer. It requires detailed plans showing clearances for features like parking, ramps, and restrooms, along with a completed accessibility upgrade worksheet.
Where do I submit my completed application package?
You can submit your application to either the Auburn Office at 3091 County Center Dr. or the Tahoe Office at 775 North Lake Blvd., depending on your project's location.
What are the Title 24 Energy Calculations?
These are state-mandated energy compliance calculations required for your project. You must include two signed copies of these calculations with your submittal.
Can I use an AI tool to help me fill out this form?
Yes, services like Instafill.ai use AI to help you accurately auto-fill form fields, which can save time and reduce errors. However, AI cannot create the required architectural or engineering plans for you.
How can I use Instafill.ai to complete this form online?
Simply upload the form to the Instafill.ai platform. The AI will identify the fields, allowing you to fill them out interactively online before printing the completed form for your submission package.
The PDF I downloaded isn't fillable. What can I do?
If you have a non-fillable PDF, you can use a service like Instafill.ai to convert it into an interactive, fillable form. This allows you to type directly into the fields for a clean and professional result.
Why do I need to sign this checklist?
Your signature certifies that you understand that an incomplete submittal will cause delays. It also confirms that you believe you have provided all the required items listed on the checklist.
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