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ICC F1 practice questions

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Question 1Administration and Enforcement of Fire and Life Safety Codes

What gives a locally adopted fire code the force of law within a jurisdiction?

  1. Recommendation of the local fire chief's association
  2. Publication of the model code by a standards organization
  3. Adoption by ordinance or statute of the jurisdiction Correct answer.
  4. Approval of the model code by a federal fire agency

Explanation

A model fire code is only a recommended document until a jurisdiction enacts it through its own legislative process. Adoption by ordinance or statute makes its provisions enforceable as local law. Private organizations and federal agencies do not confer local legal authority.

Question 2Administration and Enforcement of Fire and Life Safety Codes

An occupant refuses to allow a fire inspector to enter a commercial building for a scheduled inspection. What is the inspector's most appropriate next step?

  1. Seek an administrative warrant or court order authorizing entry Correct answer.
  2. Close the business until the owner agrees to cooperate
  3. Refer the matter to the property insurer for resolution
  4. Enter the building without consent because the code authorizes inspection

Explanation

The code official has authority to enter premises at reasonable times for inspection, but entry over an owner's refusal generally requires a warrant or court order. Refusal is grounds to seek an administrative warrant. Forcible entry is not permitted absent an imminent threat to life.

Question 3Administration and Enforcement of Fire and Life Safety Codes

Which activity typically requires an operational permit under the fire code?

  1. Repainting the interior walls of a corridor
  2. Installing a smoke alarm in a dwelling unit
  3. Storing hazardous materials above set amounts Correct answer.
  4. Replacing a burned-out lamp in an exit sign fixture

Explanation

Operational permits are required for activities the code identifies as presenting a significant hazard, such as storing or using hazardous materials above specified quantities. Routine maintenance and ordinary residential installations do not require operational permits.

Question 4Administration and Enforcement of Fire and Life Safety Codes

A fire inspector finds a contractor installing a commercial kitchen hood suppression system with no approved plans and no permit. Which enforcement action is most appropriate?

  1. Request the board of appeals to review the installation plans
  2. Issue a citation and allow the work to continue
  3. Issue a stop work order until approvals are obtained Correct answer.
  4. Schedule a final inspection for the following week

Explanation

A stop work order is issued when work is proceeding contrary to the code or without required permits and approvals. It remains in effect until the code official confirms the work may resume. Allowing the work to continue would defeat the purpose of plan review and permitting.

Question 5Administration and Enforcement of Fire and Life Safety Codes

Which element must a notice of violation include to be effective?

  1. The scheduled date of the next board of appeals meeting
  2. The name of the contractor who performed the work
  3. The home telephone number of the inspecting officer
  4. The violation and the corrective action required Correct answer.

Explanation

A notice of violation must identify the code provision violated, describe the condition, and state what must be done and by when. It provides the basis for re-inspection and further enforcement if the condition is not corrected.

Question 6Administration and Enforcement of Fire and Life Safety Codes

An owner disagrees with a fire code official's interpretation of a code requirement. Where is the proper first step?

  1. Ignore the interpretation until a violation is issued
  2. Appeal to the board of appeals within the time allowed Correct answer.
  3. Ask the fire chief to overrule the inspector in writing
  4. File a lawsuit in the local court immediately

Explanation

The code provides an administrative appeal process to the board of appeals for persons aggrieved by a decision of the code official. The appeal must be filed within the time period set by the code or ordinance. Courts generally will not hear the matter until administrative remedies are exhausted.

Question 7Administration and Enforcement of Fire and Life Safety Codes

A tenant plans to convert a mercantile space into a restaurant. What must occur before the new use begins?

  1. Approval after showing compliance with code requirements Correct answer.
  2. Nothing, because the building already has a certificate of occupancy
  3. A fire watch until the new tenant moves in
  4. Only a business license from the local revenue office

Explanation

A change of occupancy or use may introduce different hazards and triggers a requirement to show the building complies for the new use. Approval, often through a new or amended certificate of occupancy, must be obtained before occupancy. A business license alone does not satisfy fire code requirements.

Question 8Administration and Enforcement of Fire and Life Safety Codes

An owner requests an alternative to a prescriptive code requirement. Under what condition may the fire code official approve it?

  1. The owner shows that compliance would be expensive
  2. The alternative provides equivalent or greater safety to occupants Correct answer.
  3. The contractor agrees to accept responsibility for any failure
  4. The alternative is faster to install than the prescribed method

Explanation

Codes permit the official to approve alternative materials or methods where strict compliance causes practical difficulty and the proposed alternative affords equivalent protection. Cost alone is not a valid basis. The burden is on the applicant to demonstrate equivalency.

Question 9Administration and Enforcement of Fire and Life Safety Codes

What is the primary role of the fire code official in a jurisdiction?

  1. Designing fire protection systems for new buildings
  2. Enforcing the fire code through inspections and permits Correct answer.
  3. Setting the insurance rates for commercial properties
  4. Training private contractors in installation techniques

Explanation

The code official administers and enforces the adopted fire code, which includes reviewing plans, issuing permits, and conducting inspections. The official does not design systems or set insurance rates.

Question 10Administration and Enforcement of Fire and Life Safety Codes

Who is responsible for maintaining fire protection systems in an occupied building?

  1. The local fire department
  2. The fire code official
  3. The building's insurance carrier
  4. The owner or designated agent Correct answer.

Explanation

The code places responsibility for maintaining fire protection systems and keeping means of egress clear on the owner or the owner's designated agent. The fire department enforces compliance but does not perform maintenance.

Question 11Administration and Enforcement of Fire and Life Safety Codes

A required automatic sprinkler system in a high-rise office building will be out of service for repairs for two days. What should the fire code official require?

  1. Approved fire watch or interim measures during the outage Correct answer.
  2. Permanent closure of the affected floors
  3. Nothing, because the outage is shorter than one week
  4. Evacuation of the entire building until the system is restored

Explanation

When a required fire protection system is impaired, the code requires the owner to notify the code official and to implement an approved fire watch or other compensatory measures. The purpose is to maintain a comparable level of protection until the system is restored.

Question 12Administration and Enforcement of Fire and Life Safety Codes

An inspector reinspects a property and finds that all cited violations have been corrected. What is the appropriate action?

  1. Issue a new violation notice covering the inspection
  2. Keep the case open until the next annual inspection
  3. Document the corrections and close the case Correct answer.
  4. Refer the property to the board of appeals for a hearing

Explanation

Once corrections are verified, the code official records the results and closes the enforcement file. Documentation supports the record of compliance and any future inspections. Additional notices or hearings are not warranted when compliance has been achieved.

Question 13Administration and Enforcement of Fire and Life Safety Codes

Where do the penalties for violating a locally enforced fire code come from?

  1. The board of appeals at each hearing
  2. The fire code official's enforcement policy
  3. The adopting ordinance or statute Correct answer.
  4. The appendix of the model fire code

Explanation

Model codes do not fix penalties; the adopting jurisdiction establishes them by ordinance or statute. Penalties may include fines, imprisonment, or both, and each day of violation may be a separate offense.

Question 14Administration and Enforcement of Fire and Life Safety Codes

When must construction documents for a fire protection system be submitted to the code official?

  1. Within 30 days after the system is installed
  2. Only when the owner requests a variance
  3. Before a permit is issued and work begins Correct answer.
  4. At the time of the first annual inspection

Explanation

Submittal documents must be reviewed and approved before the permit is issued so that the code official can verify code compliance before construction. Installation begun before approval is a violation and may result in a stop work order.

Question 15Administration and Enforcement of Fire and Life Safety Codes

An operational permit issued under the fire code generally remains valid for what period?

  1. A set period, typically up to one year Correct answer.
  2. Until the property changes ownership
  3. Six months from the date of application
  4. The life of the building

Explanation

Operational permits are time-limited and typically expire annually, requiring renewal so the code official can confirm that conditions remain compliant. Construction permits have their own expiration rules based on work commencement and progress.

Question 16Administration and Enforcement of Fire and Life Safety Codes

What is the purpose of a final inspection before a new assembly occupancy opens?

  1. To verify that the contractor has been paid in full
  2. To confirm the work matches approved plans and code Correct answer.
  3. To determine the insurance premium for the owner
  4. To establish the property tax assessment for the building

Explanation

The final inspection verifies that the installation was completed in accordance with the approved plans and the code before the space is occupied. Approval at this stage supports the certificate of occupancy or completion.

Question 17Administration and Enforcement of Fire and Life Safety Codes

A code official determines that a building's exit enclosure has failed and occupants face imminent danger. What authority does the official have?

  1. Order the building vacated and abate the hazard Correct answer.
  2. Wait for the owner to submit voluntary repair plans
  3. Refer the matter to the planning commission for review
  4. Only issue a written warning and schedule a follow-up visit

Explanation

When a structure is unsafe or a condition creates immediate danger to life, the code authorizes the official to order evacuation and to take or require corrective action. Notice is provided as practicable, and abatement costs may be charged to the owner.

Question 18Administration and Enforcement of Fire and Life Safety Codes

How do standards such as NFPA 13 or ASME codes become enforceable under a fire code?

  1. They are enforced only when the owner voluntarily agrees
  2. They apply only to federal buildings and installations
  3. They are incorporated by reference into the code Correct answer.
  4. They are advisory guidance that inspectors may consider

Explanation

The fire code lists referenced standards and provides that they are adopted as part of the code, so their requirements have the same legal effect. Enforcement applies to all regulated premises, not only federal buildings.

Question 19Administration and Enforcement of Fire and Life Safety Codes

A fire code official assigns inspection duties to a subordinate inspector. What is the effect on the official's authority?

  1. The subordinate must be approved by the board of appeals
  2. The official retains responsibility for enforcement decisions Correct answer.
  3. Delegation is prohibited under the fire code
  4. The official loses all enforcement authority for those properties

Explanation

The code official may delegate inspection and other duties to qualified staff, but responsibility for enforcement decisions remains with the official. Delegation does not transfer accountability to the board or to the property owner.

Question 20Administration and Enforcement of Fire and Life Safety Codes

Who is responsible for obtaining the permit before installing a commercial fire alarm system?

  1. The owner or the installing contractor Correct answer.
  2. The local fire department
  3. The fire code official
  4. The property insurance company insuring the building

Explanation

The person performing the work, or the owner on whose behalf it is performed, must apply for and obtain the required permit. The code official issues permits but does not apply for them.

Question 21Administration and Enforcement of Fire and Life Safety Codes

What does a certificate of occupancy confirm under the fire code?

  1. That the property taxes for the building are current
  2. That the building is exempt from future inspections
  3. That the building may be used for the stated occupancy Correct answer.
  4. That the building is free of all future maintenance duties

Explanation

A certificate of occupancy documents that the building or portion thereof complies with code requirements for its intended use. It does not eliminate ongoing maintenance, inspection, or permit obligations.

Question 22Administration and Enforcement of Fire and Life Safety Codes

Which activity requires an operational permit from the fire code official?

  1. Using a charcoal grill at a private single-family home
  2. Testing a household smoke alarm monthly
  3. Outdoor open burning within the jurisdiction Correct answer.
  4. Replacing a battery in a carbon monoxide alarm

Explanation

Open burning is regulated because it creates smoke, air quality, and fire spread concerns, and it requires an operational permit under the fire code. Ordinary residential cooking and alarm maintenance are not permitted activities.

Question 23Administration and Enforcement of Fire and Life Safety Codes

After the board of appeals affirms a code official's decision, an owner wishes to challenge it further. What is the typical next step?

  1. Seek judicial review in a court of jurisdiction Correct answer.
  2. File a new permit application with the code official
  3. Ask the fire chief to suspend the board's decision
  4. Request a second hearing before the same board

Explanation

The board of appeals decision is generally final at the administrative level, subject to judicial review as provided by law. Courts review the record to determine whether the decision was supported and within the board's authority.

Question 24Administration and Enforcement of Fire and Life Safety Codes

The fire code official arranges for the abatement of an unsafe condition after the owner fails to comply. What may the jurisdiction do?

  1. Charge the cost only if the owner consents in writing
  2. Collect the cost from the building's tenants
  3. Recover the abatement costs from the property owner Correct answer.
  4. Absorb the cost as part of normal department operations

Explanation

The code authorizes the jurisdiction to recover costs incurred in abating a violation or unsafe condition from the responsible owner. Unpaid costs may be assessed as a lien against the property in accordance with local law.

Question 25Administration and Enforcement of Fire and Life Safety Codes

A building design complies with the building code but conflicts with a fire code requirement. How should the conflict be resolved?

  1. Apply neither code until the state fire marshal rules
  2. Let the design professional choose which code to follow
  3. Apply the more restrictive requirement to the design Correct answer.
  4. Always apply the building code because it was adopted first

Explanation

Where two code provisions address the same condition, the more restrictive requirement governs so that the higher level of safety is maintained. Neither code is automatically subordinate, and the design professional cannot elect which one to follow.

Question 26Administration and Enforcement of Fire and Life Safety Codes

A local jurisdiction decides to adopt the International Fire Code as its fire code. Which body has the legal authority to adopt the code?

  1. The local governing body Correct answer.
  2. The International Code Council
  3. The state fire marshal for every local jurisdiction
  4. The local fire chief acting alone

Explanation

Adoption of a model fire code is a legislative act performed by the jurisdiction's governing body through an ordinance or resolution. The fire chief and code officials enforce the adopted code but do not have independent authority to adopt it. The International Code Council publishes model codes but does not adopt them for a jurisdiction.

Question 27Administration and Enforcement of Fire and Life Safety Codes

What minimum clear space must be maintained around the circumference of a fire hydrant?

  1. 3 feet Correct answer.
  2. 5 feet
  3. 1 foot
  4. 10 feet

Explanation

The fire code requires a clear space of not less than 3 feet around fire hydrants to allow firefighters to connect hose and operate the hydrant. The clear space must be maintained at all times, and obstructions such as vegetation, fences, or stored materials are not permitted. A greater distance may be required by local amendment, but 3 feet is the model code minimum.

Question 28Administration and Enforcement of Fire and Life Safety Codes

Where must an operational permit issued by the fire code official be kept?

  1. With the local code official's inspection file
  2. At the owner's primary residence
  3. At the fire department headquarters
  4. On the premises for which the permit was issued Correct answer.

Explanation

A permit is required to be kept on the premises and made available for inspection by the fire code official. This allows inspectors and responders to verify that the permitted activity has been approved. Keeping the permit off site does not satisfy the code.

Question 29Administration and Enforcement of Fire and Life Safety Codes

What is required for building address identification under the fire code?

  1. The address must be painted on the roof of every building
  2. The address must be legible from the street or approved access road Correct answer.
  3. The address must be changed whenever a new tenant occupies the space
  4. The address must be posted only inside the main entrance

Explanation

Approved address numbers must be provided and maintained so they are legible from the street or fire apparatus access road. Clear address identification helps emergency responders locate the building quickly. Addresses are not required inside the building, on the roof, or to change with each tenant.

Question 30Administration and Enforcement of Fire and Life Safety Codes

A business occupant refuses to allow a fire inspector to enter for a required inspection. What is the inspector's proper course of action?

  1. Obtain a search warrant or court order Correct answer.
  2. Force entry immediately without further process
  3. End all enforcement activity against the business
  4. Ask a neighboring business owner to grant consent

Explanation

When entry is refused, the fire code official must use the legal remedies available, typically an administrative search warrant or court order. Forcible entry without legal authority is not permitted. Consent must come from the person with authority over the premises, not a neighbor.

Question 31Administration and Enforcement of Fire and Life Safety Codes

An inspector finds that a contractor is installing a fire alarm system without the required permit and in a manner that violates the code. What may the fire code official issue?

  1. A stop work order Correct answer.
  2. A temporary operating permit
  3. A certificate of occupancy
  4. A variance for the installation

Explanation

The fire code authorizes the official to issue a stop work order when work is being done contrary to the code or without required permits. The order requires work to cease until the official authorizes resumption. A certificate of occupancy, temporary permit, or variance is not a remedy for unauthorized work.

Question 32Administration and Enforcement of Fire and Life Safety Codes

A permit holder repeatedly fails to comply with the conditions of an operational permit after being notified. What action may the fire code official take?

  1. Issue a certificate of fitness instead
  2. Waive the permit conditions
  3. Increase the occupant load
  4. Revoke the permit Correct answer.

Explanation

The fire code official may revoke a permit where it was issued in error, on false information, or where the permit holder fails to comply with code requirements or permit conditions. Revocation removes the authorization to conduct the permitted activity. The official does not waive conditions or substitute an unrelated approval.

Question 33Administration and Enforcement of Fire and Life Safety Codes

Which method is generally acceptable for serving a notice of violation on a property owner?

  1. Telling a tenant to inform the owner verbally
  2. Posting it only on a social media page
  3. Personal delivery or certified mail Correct answer.
  4. Sending it by ordinary first-class mail without any record

Explanation

Notices of violation must be served by a method that provides reliable proof of delivery, such as personal service or certified mail to the owner's last known address. Posting on social media or verbal messages do not provide reliable notice. Ordinary mail without a record may not satisfy service requirements.

Question 34Administration and Enforcement of Fire and Life Safety Codes

An owner cannot complete a required correction by the date stated in a notice of violation. What is the owner's proper action?

  1. Transfer the violation to the tenant
  2. Request an extension in writing before the deadline Correct answer.
  3. Ignore the notice until an inspector returns
  4. Complete a different, less expensive correction instead

Explanation

The code allows the fire code official to grant an extension of time for correction where the owner demonstrates good cause. The request should be made in writing before the compliance date so the official can evaluate it. Ignoring the notice or shifting responsibility does not extend the deadline.

Question 35Administration and Enforcement of Fire and Life Safety Codes

A vehicle is parked in a marked fire apparatus access lane. What may the fire code official do?

  1. Wait until the vehicle owner returns
  2. Issue a permit allowing the parking
  3. Nothing, because the lane is on private property
  4. Authorize the vehicle to be removed or towed Correct answer.

Explanation

Fire apparatus access lanes must remain unobstructed at all times. The fire code authorizes the official to have vehicles or obstructions removed at the owner's expense when they block access. A permit cannot be issued to validate parking in a fire lane.

Question 36Administration and Enforcement of Fire and Life Safety Codes

Where must a hot work permit be kept while welding operations are underway?

  1. At the fire department
  2. In the contractor's vehicle
  3. At the job site Correct answer.
  4. With the building owner's insurance agent

Explanation

A hot work permit documents that the site and operations were reviewed before cutting, welding, or other hot work began. The permit must be kept at the job site and made available to the fire code official or authorized personnel. Off-site storage does not satisfy this requirement.

Question 37Administration and Enforcement of Fire and Life Safety Codes

What condition is typically required when an open burning permit is issued?

  1. The fire may be left unattended after ignition
  2. The fire must be attended until fully extinguished Correct answer.
  3. The fire may include prohibited materials if the permit is displayed
  4. The fire may be started on any windy day

Explanation

Open burning permits require that the fire be constantly attended by a responsible person until it is completely extinguished. Burning is also subject to weather and material restrictions. A permit does not authorize prohibited materials or unattended burning.

Question 38Administration and Enforcement of Fire and Life Safety Codes

A building sustains fire damage that affects structural members and fire protection systems. When may the building be reoccupied?

  1. As soon as the fire department leaves the scene
  2. After the insurance company pays the claim
  3. After the owner cleans the exterior
  4. After the code official approves the repairs Correct answer.

Explanation

A building damaged by fire cannot be reoccupied until the fire code official has inspected the damage and determined that structural and fire protection systems are restored. The official may order the building vacated or require repairs before occupancy. Cleanup or insurance payment alone does not establish safety.

Question 39Administration and Enforcement of Fire and Life Safety Codes

Why may a fire code official require a key box at a commercial building?

  1. To hold spare fire extinguishers
  2. To store the owner's business records
  3. To give firefighters rapid access to the building Correct answer.
  4. To display the building's certificate of occupancy

Explanation

A key box is a secure vault containing keys or access cards for the fire department's use during an emergency. It allows responders to enter without forcing doors and delaying firefighting. Key boxes are not intended for business records, certificates, or extinguisher storage.

Question 40Administration and Enforcement of Fire and Life Safety Codes

An assembly space has a posted occupant load of 150. The owner arranges seating for 200 people. What is the fire code official's authority?

  1. Require the exit signs to be turned off
  2. Do nothing because occupant load is only a guideline
  3. Allow the increase if the owner posts a new sign
  4. Require seating to be reduced to the posted load Correct answer.

Explanation

The posted occupant load is the maximum number of persons approved for the space based on means of egress capacity. Exceeding it is a violation and creates a life-safety hazard. The official may require the excess occupants or seating to be removed and may pursue enforcement action. The owner cannot unilaterally change the posted load.

Question 41Occupancy Classification and Fire Safety Requirements

A restaurant with a posted occupant load of 80 patrons is classified in which occupancy group?

  1. Group B
  2. Group A-1
  3. Group A-3
  4. Group A-2 Correct answer.

Explanation

Group A-2 includes restaurants, cafeterias, bars, and similar food and drink establishments. Group A-1 is for theaters and similar viewing occupancies, and Group A-3 covers worship, lecture, and recreation uses. Group B is for offices and professional services.

Question 42Occupancy Classification and Fire Safety Requirements

A child day care facility provides care for six children who are 2 years old. How is this facility classified?

  1. Group I-4 Correct answer.
  2. Group R-3
  3. Group E
  4. Group I-2

Explanation

Group I-4 includes day care facilities where care is provided for more than five children 2 1/2 years of age or younger. Group E generally covers day care for more than five children older than 2 1/2 years. Because these children are 2 years old, the facility is Group I-4.

Question 43Occupancy Classification and Fire Safety Requirements

A warehouse storing combustible furniture and household goods is classified in which occupancy group?

  1. Group S-1 Correct answer.
  2. Group S-2
  3. Group F-1
  4. Group M

Explanation

Group S-1 is moderate-hazard storage and includes combustible goods such as furniture and household items. Group S-2 is low-hazard storage for noncombustible materials or limited combustible quantities. Group F-1 is factory industrial and Group M is mercantile.

Question 44Occupancy Classification and Fire Safety Requirements

A public library building is classified in which occupancy group?

  1. Group A-2
  2. Group B
  3. Group A-3 Correct answer.
  4. Group E

Explanation

Group A-3 includes libraries, museums, lecture halls, and similar assembly uses. Group A-2 is for restaurants and bars, Group B is for business offices, and Group E is for educational occupancies.

Question 45Occupancy Classification and Fire Safety Requirements

What is the maximum travel distance to a Class A portable fire extinguisher?

  1. 75 feet Correct answer.
  2. 30 feet
  3. 100 feet
  4. 50 feet

Explanation

For Class A fire hazards, the maximum travel distance to an extinguisher is 75 feet. Class B hazards use shorter distances depending on the hazard level. The 30-foot and 50-foot values apply to Class B or Class K hazards, not ordinary Class A hazards.

Question 46Occupancy Classification and Fire Safety Requirements

A nursing home providing care for more than five patients is classified in which occupancy group?

  1. Group R-2
  2. Group I-2 Correct answer.
  3. Group I-1
  4. Group I-4

Explanation

Group I-2 includes medical care facilities such as hospitals, nursing homes, and custodial care facilities where occupants are incapable of self-preservation. Group I-1 covers residential care for more than 16 occupants, and Group I-4 covers day care. Group R-2 is apartment-style residential occupancy.

Question 47Occupancy Classification and Fire Safety Requirements

An office building with 25 employees engaged in administrative work is classified in which occupancy group?

  1. Group B Correct answer.
  2. Group M
  3. Group E
  4. Group R-1

Explanation

Group B is business occupancy and includes offices, professional services, and administrative functions. Group E is educational, Group M is mercantile, and Group R-1 is transient residential such as hotels.

Question 48Occupancy Classification and Fire Safety Requirements

Which class of portable fire extinguisher is specifically intended for cooking appliances involving vegetable oils and animal fats?

  1. Class K Correct answer.
  2. Class A
  3. Class C
  4. Class B

Explanation

Class K extinguishers are designed for fires involving cooking oils and fats in commercial cooking equipment. Class A is for ordinary combustibles, Class B for flammable liquids, and Class C for energized electrical equipment.

Question 49Occupancy Classification and Fire Safety Requirements

Where a building contains two or more occupancies that are not separated from each other, the building must comply with which requirements?

  1. The requirements of the first occupancy identified on the plans
  2. The most restrictive requirements of the occupancies involved Correct answer.
  3. The least restrictive requirements of the occupancies involved
  4. The average of the requirements of the occupancies involved

Explanation

Under the nonseparated occupancies provisions, the building must satisfy the most restrictive requirements of the occupancies involved. This includes allowable height, area, and fire protection features. The occupancies are treated as a single combined occupancy for code compliance.

Question 50Occupancy Classification and Fire Safety Requirements

An accessory occupancy is limited to what maximum percentage of the story floor area?

  1. 15 percent
  2. 20 percent
  3. 10 percent Correct answer.
  4. 25 percent

Explanation

Accessory occupancies are limited to 10 percent of the area of the story and may not exceed the tabular area allowed for the accessory occupancy. The space must be incidental to the main occupancy. Larger spaces must be treated as mixed occupancies.