What is a zoning variance?
A zoning variance is an official exception to a zoning regulation, granted by a local board of appeals when strict application of the rule would cause undue hardship to a property owner. Variances are not automatic and require a formal application and hearing.
What to do first
A zoning variance is an official exception to a zoning regulation, granted by a local board of appeals when strict application of the rule would cause undue hardship to a property owner. Variances are not automatic and require a formal application and hearing.
Printable checklist
- Identify the exact zoning standard the project cannot meet.
- Confirm a variance is the correct relief mechanism rather than a conditional use, appeal, or rezoning.
- Document the parcel condition that creates the need for relief.
- Design the smallest practical deviation and show it clearly on the site plan.
- Review local approval criteria, notice rules, hearing procedure, and filing deadlines.
- Prepare evidence that addresses each required finding rather than relying on general hardship language.
How this works in practice
A variance allows a property owner to deviate from specific zoning requirements when strict compliance would create an unreasonable burden.
Types of variances
- Area/dimensional variance: Exceptions to setbacks, height limits, lot coverage, or parking requirements. These are more commonly granted.
- Use variance: Permission to use property in a way not normally allowed in the zoning district. These are more difficult to obtain.
Requirements for obtaining a variance (vary by jurisdiction)
- Hardship or practical difficulty: The property has unique characteristics (shape, topography, size) that make compliance unreasonably difficult
- Not self-created: The hardship was not created by the property owner's own actions
- Minimum variance: The requested relief is the minimum necessary
- No harm to the public: The variance will not negatively impact the neighborhood or public interest
- Consistent with the comprehensive plan: The variance aligns with the community's planning goals
The variance process
- Submit an application with supporting documentation to the zoning board
- Pay the application fee (typically $200 - $1,000+)
- Public notice is posted and/or mailed to neighboring property owners
- Attend a public hearing before the Board of Zoning Appeals
- Present your case, including evidence of hardship
- Neighbors and other interested parties may speak for or against
- The board votes to approve, approve with conditions, or deny
- Decisions can typically be appealed to a court
Tips for a successful variance application
- Document the specific hardship with photos, surveys, and expert opinions
- Show that the variance will not negatively affect neighbors
- Demonstrate that alternatives were considered
- Attend board meetings before your hearing to understand the process
- Consider hiring a land-use attorney for complex cases
What an application can look like
These examples show how a project scope typically turns into an application packet. The issuing authority decides the exact forms, documents, and reviews for a property.
Detached garage
A new detached two-car garage behind a residence.
Construct a 24 ft × 24 ft detached wood-frame garage on a slab-on-grade behind the existing residence, with two overhead doors, one service door, and a new underground electrical feeder.
Typical application material
- Site plan with parcel dimensions, setbacks, driveway, and garage footprint
- Foundation, wall, roof, and opening details
- Building elevations and overall height
- Electrical scope if the garage will be powered
Likely review touchpoints
- Zoning for setbacks, height, lot coverage, and accessory-use rules
- Building review for structure and foundation
- Trade review and inspections when utilities are included
Residential deck
A new elevated rear-yard deck attached to an existing home.
Construct a 12 ft × 16 ft attached rear deck, approximately 30 in above grade, with pressure-treated framing, code-compliant guards and stairs, and concrete footings below the locally required depth.
Typical application material
- Permit application describing size, height, materials, and attachment
- Dimensioned site plan showing lot lines, house, deck, and setbacks
- Framing, footing, guard, stair, and ledger details
- Contractor or owner-builder information where the authority requires it
Likely review touchpoints
- Zoning placement and lot coverage
- Structural and building-code review
- Footing, framing, and final inspections
Home addition
A one-story conditioned addition connected to an existing house.
Construct a 14 ft × 20 ft one-story conditioned rear addition containing a family room; extend the existing foundation, framing, electrical, HVAC, and roofing systems; no new plumbing fixtures.
Typical application material
- Survey or site plan with the proposed footprint
- Architectural floor plans and elevations
- Foundation, framing, and structural details
- Energy, electrical, plumbing, and HVAC information as applicable
Likely review touchpoints
- Zoning and site constraints before plan review
- Building, energy, and trade-code review
- Foundation, rough-in, framing, insulation, and final inspections
Median application-to-issue interval 22 days; median recorded fee $825.
Median recorded fee $550 in the loaded Chicago corpus.
Median application-to-issue interval 1 day; median recorded fee $350.
Active City of Chicago permits currently in the GovCodex Illinois permit corpus.
Snapshot checked September 28, 2026. GovCodex Illinois permit data currently reflects 842,269 active City of Chicago permit records loaded from the City of Chicago dataset, with issue dates from January 3, 2006 through July 24, 2026. Historical counts, elapsed time, and recorded fees describe observed permits only. They do not determine whether a permit is required, predict approval, or replace the issuing authority’s current rules and fee schedule.
What else to know
A variance is tied to a specific rule and parcel
Variance standards differ by state and locality. The application should identify the exact dimensional or use rule at issue, quantify the requested relief, and connect the evidence to the local findings the decision-maker must make.
Approval may include conditions
Boards can impose conditions within their authority, and a variance usually does not replace later building, trade, site, or other permits. Read the written decision and carry its conditions into the final permit drawings.
Check the actual project against the actual property.
Start with the address and scope. GovCodex will identify the relevant authority, requirements, and permit path for the project.
GovCodex
What is a zoning variance?
A zoning variance is an official exception to a zoning regulation, granted by a local board of appeals when strict application of the rule would cause undue hardship to a property owner. Variances are not automatic and require a formal application and hearing.
Variance preparation checklist
- Identify the exact zoning standard the project cannot meet.
- Confirm a variance is the correct relief mechanism rather than a conditional use, appeal, or rezoning.
- Document the parcel condition that creates the need for relief.
- Design the smallest practical deviation and show it clearly on the site plan.
- Review local approval criteria, notice rules, hearing procedure, and filing deadlines.
- Prepare evidence that addresses each required finding rather than relying on general hardship language.
Requirements vary by property and jurisdiction. Verify the current issuing authority, permit path, fee schedule, and inspection requirements before starting work.
govcodex.com/answers/what-is-a-variance