The lack of a statewide building code in Kansas creates a complex regulatory landscape for architects, engineers, and contractors. When working on existing buildings, particularly projects involving renovations or a change of occupancy, understanding the locally adopted International Existing Building Code (IEBC) is critical. This guide breaks down the requirements, focusing on a real-world example in Johnson County to illustrate the process.
The core requirement for commercial projects involving alterations or a change of occupancy in unincorporated Johnson County, Kansas, is compliance with the 2018 International Existing Building Code (IEBC). The county adopted this code without significant amendments to its primary compliance methods. This means designers have the full flexibility offered by the model code to choose the most appropriate path for their project.
Key takeaways for projects in Johnson County include:
Adopted Code: The 2018 IEBC is the governing code, adopted via Johnson County Resolution No. 068-18.
No Major Amendments: The county adopts the IEBC "in its entirety," so the standard Prescriptive, Work Area, and Performance compliance paths are available as written in the model code.
Compliance Path Choice: The design team must strategically choose a compliance path at the project's outset.
Prescriptive Method (Chapter 5): Best for simple projects where direct, listed requirements can be easily met.
Work Area Method (Chapters 6-12): Most common for complex renovations. It categorizes work into levels (1, 2, or 3) and provides a more flexible, tailored approach.
Change of Occupancy is a Major Trigger: Regardless of the compliance path chosen, a change of use or occupancy classification (e.g., from Business to Assembly) is a significant event that triggers substantial upgrades to life safety, structural, and accessibility systems, often approaching the requirements for new construction.
Why Navigating Local Kansas Codes Matters
Kansas is one of the few states without a mandatory, statewide building code. This places the responsibility of code adoption and enforcement on individual counties and municipalities. For design professionals, this means the first step of any project is to confirm the exact codes—and their specific local amendments—enforced by the Authority Having Jurisdiction (AHJ). An assumption that one city's code is the same as the neighboring county's can lead to costly redesigns and permitting delays.
The International Existing Building Code (IEBC) is a vital tool in this environment. It acknowledges that requiring an existing structure to meet all requirements of the current International Building Code (IBC) for new construction is often physically impossible and financially prohibitive. The IEBC provides structured, alternative pathways for ensuring that alterations, repairs, additions, and changes of occupancy result in a safe building.
Common pitfalls in Kansas include:
Assuming a Uniform Code: Forgetting to verify codes with the specific city or county AHJ. A project in Overland Park may have different requirements than one in unincorporated Johnson County or Wichita.
Underestimating a "Change of Occupancy": A seemingly simple tenant change can trigger a full change of occupancy classification under the code, mandating expensive upgrades to fire sprinklers, alarms, egress paths, and accessibility features.
Misapplying Compliance Paths: Choosing the wrong IEBC compliance path can create unnecessary complications. The Prescriptive Method might be too rigid for a complex renovation, while the Work Area Method might be overkill for a minor alteration.
Understanding the interplay between the IEBC, IBC, International Fire Code (IFC), and accessibility standards like the Americans with Disabilities Act (ADA) is essential for successful project delivery and permit approval in any Kansas jurisdiction.
My commercial project in an unincorporated area of Johnson County involves a change of occupancy that triggers upgrades under the IEBC. What is the specific IEBC version adopted, and what are the county's amendments regarding the work area compliance method versus the prescriptive method?
For any project in the unincorporated areas of Johnson County, Kansas, the governing code is the 2018 International Existing Building Code (IEBC). This was officially adopted through Johnson County Resolution No. 068-18, which became effective on January 1, 2019.
Crucially, the resolution states that the 2018 IEBC is adopted "in its entirety." This means Johnson County has not created local amendments that modify or restrict the use of the primary compliance methods detailed in the code. Therefore, design professionals can use the Prescriptive Method, Work Area Method, or Performance Method exactly as they are written in the 2018 IEBC.
Understanding Your IEBC Compliance Options in Johnson County
Since there are no local amendments altering the core methods, the choice of compliance path is a strategic decision for the design team based on the project's scope, complexity, and the condition of the existing building. A change of occupancy will trigger specific requirements under any path chosen.
1. Prescriptive Compliance Method (2018 IEBC Chapter 5)
This method provides a straightforward, checklist-style approach. It’s often best suited for smaller, less complex projects.
How it Works: This chapter lists specific requirements for additions, alterations, and repairs. When a change of occupancy occurs, IEBC §506 dictates the required upgrades.
Change of Occupancy Trigger (§506): This section requires compliance with specific provisions of the International Building Code for the new occupancy. This includes, but is not limited to, requirements for:
Allowable height and area (IBC Chapter 5)
Exterior walls and fire separation distance (IBC Chapter 6 & 7)
Fire protection systems like sprinklers (IBC Chapter 9)
Means of egress (IBC Chapter 10)
Accessibility (IBC Chapter 11)
Structural loads (§506.3)
2. Work Area Compliance Method (2018 IEBC Chapters 6-12)
This is the most widely used method for substantial renovations and changes of occupancy. It provides a more nuanced and flexible approach by classifying the project based on the extent of the work.
How it Works: The work is categorized into one of three levels:
Level 1 Alteration (Chapter 7): Removal and replacement of existing materials (e.g., new finishes, reroofing).
Level 2 Alteration (Chapter 8): Reconfiguration of space, including moving walls and doors.
Level 3 Alteration (Chapter 9): Work area exceeds 50% of the building area.
Change of Occupancy Trigger (Chapter 10): When a change of occupancy occurs under this method, IEBC §1012 applies. This section is comprehensive and requires the building to comply with many of the IBC requirements for the new occupancy, similar to the Prescriptive path. Key areas of focus include:
Means of Egress (§1012.4): Egress components like doors, corridors, and exit capacity must comply with IBC Chapter 10.
Fire Protection (§1012.3): The building must be evaluated for fire alarm and sprinkler systems as if it were a new building of that occupancy. If the IBC would require sprinklers for the new use, they must be installed.
Accessibility (§1012.7): The new use must comply with the accessibility requirements of IBC Chapter 11.
Because Johnson County has not amended these sections, your project team has the freedom to analyze both the Prescriptive and Work Area methods to determine which path provides the most efficient and cost-effective route to compliance for your specific change of occupancy scenario.
Choosing the Right IEBC Compliance Path
What can you ask? (Sample questions)
- How does IBC classify mixed-use buildings?
- When does a renovation trigger a change of occupancy?
- What are the IEBC triggers for code compliance upgrades?
- How do separated vs. nonseparated mixed occupancies differ?
Selecting the appropriate compliance method is one of the most important upfront decisions in an existing building project. Your choice impacts the project's scope, budget, and schedule. The table below compares the three primary methods available under the 2018 IEBC adopted in Johnson County.
Compliance Method | Best For… | Key Characteristics | Relevant 2018 IEBC Chapters |
|---|---|---|---|
Prescriptive | Simple additions, alterations, or changes of occupancy in less complex buildings. | Follows a direct, checklist-style set of requirements. Less flexible but very straightforward. | Chapter 5 |
Work Area | Most commercial renovations, tenant improvements, and complex changes of occupancy. | Categorizes work by level of intervention (1, 2, or 3). Provides tailored requirements based on the work area's scope. | Chapters 6-12 |
Performance | Unique or historically significant buildings where prescriptive solutions are not feasible. | An engineering-based approach. The design must demonstrate through analysis that the building's performance is equivalent to the code. Requires deep analysis and close coordination with the AHJ. | Chapter 13 |
Coordination with Other Codes During Renovations
An IEBC project never exists in a vacuum. The work must be coordinated with a range of other applicable codes and standards, all of which are adopted and enforced by the Johnson County Building Codes department.
International Building Code (IBC): The IEBC constantly references the IBC for the "new construction" standards that are triggered by a change of occupancy or major alteration.
International Fire Code (IFC): The Johnson County Fire Marshal or local fire district will review plans for compliance with the 2018 IFC. This is especially critical for egress paths, fire alarm systems, sprinkler systems, and hazardous materials.
Accessibility (ADA & IBC Chapter 11): Any alteration to a "primary function area" triggers requirements under IEBC §705 (Work Area Method) to improve accessibility on the path of travel to the altered area. This is in addition to the federal requirements of the Americans with Disabilities Act (ADA), which is a civil rights law, not a building code, but has overlapping requirements.
National Electrical Code (NEC): Altered spaces must meet the requirements of the locally adopted NEC (2017 edition for Johnson County). A change of occupancy may require significant upgrades to service, panelboards, and branch circuiting.
International Mechanical & Plumbing Codes (IMC/IPC): Changes to HVAC and plumbing systems must comply with the 2018 IMC and IPC. A change of occupancy often alters ventilation, exhaust, and fixture count requirements.
International Energy Conservation Code (IECC): Alterations to the building envelope (windows, insulation) or lighting and mechanical systems must comply with the 2018 IECC.
Common Pitfalls in Kansas Existing Building Projects
Forgetting Local Amendments: While Johnson County's IEBC adoption is straightforward, cities within the county (like Overland Park, Olathe, or Lenexa) adopt their own codes and often have specific amendments. Always verify with the city's building department.
Misinterpreting "Work Area": In the Work Area Method, correctly defining the "work area" is crucial. It directly impacts whether the project is a Level 1, 2, or 3 alteration, which have vastly different requirements.
Ignoring "Path of Travel" Costs: Forgetting to budget for the accessibility upgrades required for the path of travel can be a costly mistake. The IEBC generally requires up to 20% of the construction cost of the altered primary function area to be spent on these upgrades.
Assuming Grandfathering: The term "grandfathered" is often misused. While an existing, untouched condition may be allowed to remain, the moment you alter a system or area, it is subject to the requirements of the IEBC for that scope of work.
IEBC and Permitting in Johnson County
When submitting for a permit in unincorporated Johnson County, your construction documents must clearly state which IEBC compliance path is being used.
Plan Review: The plans examiner will review your drawings against the requirements of the chosen path (Prescriptive, Work Area, or Performance).
Clear Documentation: Your drawings should include a code analysis sheet that outlines the occupancy group (existing and proposed), construction type, and a summary of how the project complies with the key provisions of the IEBC.
Change of Occupancy: If a change of occupancy is involved, the review will be especially rigorous. Expect detailed scrutiny of egress plans, fire protection system designs, and accessibility details to ensure they meet the IBC-level requirements triggered by the IEBC.
A well-documented set of plans that clearly demonstrates compliance with a chosen IEBC path will lead to a smoother plan review and a faster permit issuance.
Frequently Asked Questions (FAQ)
Does Kansas have a statewide building code? No, Kansas does not have a mandatory statewide building code. Building codes are adopted and enforced at the local level by individual counties and cities, leading to variation across the state.
What is the main purpose of the IEBC? The International Existing Building Code (IEBC) provides a safe, practical, and economically feasible framework for altering, repairing, or changing the occupancy of existing buildings without forcing full, and often impossible, compliance with codes intended for new construction.
If a city within Johnson County, like Overland Park, has its own code, which one applies? The city's adopted code applies to projects within its incorporated limits. The Johnson County building codes apply only to projects in the unincorporated areas of the county.
Does a cosmetic update like new paint and carpet trigger the IEBC? Generally, minor cosmetic work is considered "ordinary repairs" and does not trigger significant code requirements. Under the Work Area method, this would be a Level 1 Alteration (IEBC Chapter 7), which has minimal requirements focused on not making the building less safe than it was before.
Are historic buildings exempt from the IEBC in Kansas? No, but they are not treated the same as other buildings. The 2018 IEBC includes Chapter 12, "Historic Buildings," which provides specific, more flexible provisions and alternatives to preserve the historic character of a designated structure while still ensuring an acceptable level of life safety.
How do I find the adopted codes for a specific city in Kansas, like Wichita or Topeka? The best source is the official website for that city's Building Department, Planning Department, or Community Development office. They typically publish a list of their current, adopted construction codes and any local amendments.
What triggers an accessibility upgrade under the IEBC? In the Work Area Method, IEBC §705 requires accessibility upgrades when an alteration affects a "primary function area" (e.g., the main office space, a retail floor). When this occurs, a portion of the project cost (up to 20%) must be spent on making the path of travel to that area accessible, including restrooms, fountains, and parking.
Can I mix and match compliance paths from the IEBC on one project? No, IEBC §402.2 requires the design professional to select a single compliance path (Prescriptive, Work Area, or Performance) for the entire project. The code official must approve any deviation from this rule.