The documents needed for a building permit fall into five core categories in almost every U.S. jurisdiction: a completed application form, proof of identity and property ownership, scaled construction drawings, a site plan, and verification of your contractor’s license and insurance. Most local codes are built on the International Building Code or the International Residential Code, so the baseline list is remarkably consistent from one city to the next. Depending on your project, you may also need energy code compliance paperwork, a zoning approval letter, and an owner-builder affidavit if you plan to do the work yourself.1International Code Council. 2021 International Building Code – Chapter 1 Scope and Administration Gather everything before you file. Incomplete submissions get rejected on the spot, and each round trip to the counter costs you days.
The Application Form
The application itself anchors the submission. Under the model building code adopted in most U.S. jurisdictions, it must include a written description of the proposed work, the legal description or street address of the property, the intended use of the building, the estimated project value, and the applicant’s signature.1International Code Council. 2021 International Building Code – Chapter 1 Scope and Administration The valuation matters because permit fees are usually calculated as a percentage of it. Understate the value and you risk a rejected application or a retroactive fee adjustment. Overstate it and you overpay upfront.
Be specific in the scope-of-work field. “Kitchen remodel” is not enough. Spell out what actually changes: removing a load-bearing wall, adding a window opening, relocating plumbing lines, upgrading the electrical panel. The more specific your description, the faster the plan reviewer can route the file to the right trade reviewers.
If someone other than the owner is filing, most departments require a notarized letter of authorization. The letter identifies the property, the scope of authority granted, and the specific permit being requested. Contractors file on behalf of owners all the time, but without that signed and notarized letter, the department will send you home.
Proof of Identity and Property Ownership
Bring a current government-issued photo ID such as a driver’s license or passport. To prove you have the legal right to modify the property, bring a copy of the recorded deed or a recent property tax statement. Either is available from your county recorder or tax assessor’s office. Some online portals accept scanned copies; walk-in offices may require originals.
The name on your ID must match the name on the deed exactly. “Robert J. Smith” on the deed and “Bob Smith” on the application can trigger a verification hold that delays the permit by days or weeks. If the property is held in a trust, LLC, or partnership, you will likely need the formation documents or a resolution authorizing the signatory to act for the entity.
Construction Documents and Drawings
Construction documents are the technical heart of the application. The model building code requires them to show the location, nature, and extent of the proposed work in enough detail to demonstrate compliance with the code.2International Code Council. 2021 International Building Code – Chapter 1 Scope and Administration In practice that means dimensioned floor plans, structural drawings, electrical layouts, plumbing schematics, and elevation views showing each side of the building.
For most projects beyond simple interior cosmetic work, these drawings must be prepared and sealed by a licensed architect or professional engineer. The seal tells the plan reviewer that a qualified person has certified the structural adequacy of the design, including how it handles wind, snow loads, and seismic forces for your area. Single-family homes and small residential additions sometimes qualify for an exception at the building official’s discretion. Anything involving multiple units or commercial space almost always requires sealed drawings.2International Code Council. 2021 International Building Code – Chapter 1 Scope and Administration
The Site Plan
Separately from your construction drawings, you need a site plan drawn to scale showing the size and location of new and existing structures, distances from property lines, existing and proposed grade elevations, and any applicable flood hazard areas.3UpCodes. Section 107 Submittal Documents This is how the department confirms your project respects zoning setbacks and does not encroach on easements or neighboring property.
Many departments require the site plan to be based on a certified boundary survey, especially for new construction or additions that push close to a property line. If your last survey is more than a few years old or the property has changed since then, budget for a new one. For minor interior work, the building official has authority to waive or modify the site plan requirement, so ask before you pay a surveyor.
Energy Code Compliance Documentation
Most jurisdictions have adopted some version of the International Energy Conservation Code, and your application may need to include compliance forms showing that the project meets insulation, window efficiency, HVAC sizing, and air sealing standards. For residential projects this often takes the form of a Manual J load calculation for heating and cooling equipment, or a prescriptive checklist showing that insulation R-values and window U-factors meet the local code.
Many departments accept software-generated reports such as REScheck for residential buildings or COMcheck for commercial projects. These tools compare your building specifications against the applicable energy code and produce a pass-or-fail certificate you can include with the application. If your architect or engineer is preparing sealed drawings, ask whether energy compliance documentation is in their scope. Often it is not, and you will need to hire an energy consultant or run the software yourself.
Contractor License and Insurance Verification
If you are hiring a contractor, the application will require their state-issued license number and proof that the license is current. Most building departments verify this against the state licensing board’s database before issuing the permit. You will also need the contractor’s certificates of insurance for general liability and, in most jurisdictions, workers’ compensation. The certificates must name the project address and be current as of the date of submission.
Insurance minimums vary by jurisdiction and project size. Some departments set a floor of $500,000 in general liability for smaller residential work and require $1,000,000 or more for larger projects. Do not assume your contractor’s insurance is adequate because they say so. Ask for the actual certificate and verify the coverage amounts and expiration date before you submit.
Owner-Builder Affidavit
If you plan to do the work yourself instead of hiring a licensed contractor, most jurisdictions require you to sign an owner-builder affidavit. This is a formal acknowledgment that you are taking on the legal responsibilities a licensed contractor would normally carry. The typical affidavit asks you to confirm that you will personally supervise construction, that the property is for your own use rather than being built for immediate sale or lease, and that any subcontractors you hire are properly licensed.
Owner-builder affidavits also typically include a disclosure that you are giving up certain consumer protections that apply when licensed contractors do the work. Some jurisdictions restrict the sale of a property built under an owner-builder permit for a period after construction, often one year, on the theory that the exemption was meant for personal use. That restriction trips up people who pull an owner-builder permit on a property they plan to flip.
Zoning and Other Pre-Permit Approvals
Before the building department will look at your construction documents, you may need separate zoning approval. Zoning review confirms that your project is an allowed use for the property’s zoning district, meets lot coverage limits, and complies with height restrictions. In some jurisdictions, zoning clearance is handled internally as part of permit review. In others, you need a separate zoning approval letter to attach to your building permit application.
Projects that do not conform to current zoning rules may require a variance or special use permit, which involves public hearings and a longer timeline. If your property sits in a historic district, you will also need approval from the historic preservation commission before the building department will accept your application.
One boundary worth flagging: if you live in a neighborhood with a homeowners association, the HOA’s architectural review committee can reject plans the city would otherwise approve. HOA approval is not a government document and the building department will not ask for it, but your building permit does not override your HOA’s covenants.
When You Don’t Need a Permit at All
Not every project triggers a permit. The International Residential Code, which most jurisdictions adopt for single-family and two-family homes, exempts several categories of work.4International Code Council. 2021 International Residential Code – R105.2 Work Exempt From Permit Common exemptions include one-story detached accessory structures of 200 square feet or less (such as sheds and playhouses, excluding storm shelters), fences not exceeding 7 feet, retaining walls 4 feet or shorter that do not support a surcharge load, sidewalks and driveways at grade, cosmetic finishes like paint and tile and cabinetry, freestanding decks under 200 square feet and no higher than 30 inches above grade that are not attached to the house or serving a required exit door, playground equipment, and prefabricated swimming pools less than 24 inches deep.
Two cautions. Even when the structure itself is exempt, electrical, plumbing, and mechanical work inside it still requires separate trade permits. A 150-square-foot shed does not need a building permit, but running a circuit to it does. And your local jurisdiction may have adopted different thresholds. Some communities set the accessory structure exemption at 120 square feet instead of 200, and fence height limits vary widely. Check your local code before assuming the model numbers apply.
Submitting the Application and Paying Fees
Many building departments now accept digital submissions through an online portal where you upload PDFs and complete the application electronically. Others still require printed sets of plans at the counter. Call ahead or check the department’s website so you don’t show up with paper copies at a digital-only office.
Permit fees are typically due at submission. The base fee is usually tied to the estimated project valuation, with the formula varying by jurisdiction. A simple bathroom renovation might cost a few hundred dollars; a large addition or new home can run into the thousands. Beyond the base fee, you may owe plan review fees, separate trade permit fees for electrical, plumbing, and mechanical work, and technology surcharges for online processing.
For new construction and larger projects, many jurisdictions also charge development impact fees at the time of permit issuance. These one-time charges help fund public infrastructure like roads, water and sewer systems, and parks that the new development will use.5Federal Highway Administration. Value Capture Frequently Asked Questions – Impact Fees Impact fees can add thousands to the total cost of a permit for new residential units, so factor them into your budget early.