Fees
Estimated city fees
Baseline for a simple permitted shed: $175–$600 estimated city fees (permit + plan review) for a permitted Chicago shed; sheds 100 sq ft and under with no utility work may be building-permit-exempt, but zoning setbacks under Chicago Title 17 still apply and must be verified
| Fee | Amount | Notes |
|---|---|---|
| Chicago Department of Buildings building permit fee (sheds over 100 sq ft) | $100–$400 (estimated) | Chicago residential permit fees are based on project valuation using the DOB fee schedule. A typical residential shed ($3,000–$15,000 value) falls in this range. Verify current amounts at chicago.gov/city/en/depts/bldgs. |
| Plan review / zoning review fee | $75–$200 (estimated) | A plan review fee covers Title 14B structural review and Title 17 zoning compliance. Combined permit and plan review for a residential shed typically runs $175–$600. |
| Electrical / plumbing / mechanical trade permits | $50–$200 each (estimated) | Each utility trade requires a separate Chicago DOB permit and inspection, even when the shed itself is small enough to be exempt from the basic building permit. |
| Inspection fees | Included or bundled with permit | Permitted sheds include required DOB inspections — typically foundation/footing, framing, and final stages. |
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Conditions
The rules that apply
- Under Chicago Zoning Ordinance (Title 17) Section 17-2-0305 and Chicago Construction Code (Title 14B), detached accessory structures including sheds with a floor area of 100 square feet or less may be exempt from the Chicago Department of Buildings building permit requirement when constructed as a simple one-story structure with no utility connections.
- A building permit is required for any shed with a floor area exceeding 100 square feet. Chicago's permit threshold for accessory sheds is lower than many IRC-based jurisdictions, which often allow up to 120 or 200 square feet without a permit.
- Chicago uses the Chicago Construction Code (Title 14B, 2019 edition), not the International Residential Code (IRC). Structural requirements for shed framing, connections, and foundations are governed by Title 14B and may differ from what contractors are accustomed to in IRC-based suburbs or cities.
- Electrical, plumbing, and mechanical work each require separate trade permits from the Chicago Department of Buildings regardless of the shed's size. A shed otherwise exempt from the building permit still needs an electrical permit if wiring is added.
- Foundation requirements differ between pre-fabricated and site-built sheds in Chicago. Pre-fabricated sheds typically use concrete piers or a treated wood skid base system; site-built sheds may require a full concrete slab or poured piers depending on size and soil conditions. The Chicago Building Code governs foundation adequacy.
- Chicago Zoning Ordinance Section 17-2-0305 governs accessory structure placement in residential zoning districts, including setbacks from property lines, maximum lot coverage, and maximum accessory structure height. Setbacks vary by zoning district — RS (residential single-family), RT (two-flat), and RM (multi-unit) districts have different rules.
- Chicago landmark and historic district properties may require review from the Commission on Chicago Landmarks before installing a shed that is visible from a public right-of-way.
- Sheds must not block required rear-yard open space or exceed Chicago's maximum rear-yard coverage limits. Confirm compliance with zoning before ordering a pre-fab shed or pouring footings.
Documents
What you'll need to file
- Chicago Department of Buildings permit application submitted through the City's e-permit portal at chicago.gov/city/en/depts/bldgs.
- Scaled site plan showing property lines, lot dimensions, existing structures, and the proposed shed location, footprint, and setback distances.
- Floor plan and elevations showing shed dimensions, wall heights, roof type, door locations, and general use.
- Foundation details appropriate to the shed size and site conditions — concrete piers, slab, or treated wood skid system — demonstrating compliance with Chicago Construction Code Title 14B requirements.
- Structural framing details for sheds over 100 sq ft, including wall framing, roof framing, and connection hardware complying with Chicago Building Code Title 14B.
- Manufacturer's installation instructions and specifications for pre-fabricated shed kits, including foundation and anchorage methods.
- Zoning compliance plot plan confirming the shed meets Chicago Zoning Ordinance Section 17-2-0305 setback, height, and lot coverage limits for the applicable district.
- Contractor license number and proof of insurance for any licensed contractor pulling the permit.
- Chicago landmark or Commission on Chicago Landmarks review documentation if the property is a designated landmark or within a landmark district.
Process
How the permit process works
Sequential — each step gates the next.
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Apply Chicago's 100-square-foot threshold as the first filter Under Chicago Construction Code Title 14B and Zoning Ordinance Section 17-2-0305, a simple one-story shed with no utilities at 100 square feet or less may be exempt from the Chicago DOB building permit requirement. Sheds over 100 sq ft, multi-story structures, and any shed with utility work require a permit. All sheds must still comply with zoning setbacks.
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Verify zoning placement using the Chicago Zoning Map Use the Chicago Zoning Map at gis.chicago.gov to identify the zoning district (RS, RT, RM) and confirm applicable setback, height, and lot coverage limits under Title 17 Section 17-2-0305. Setbacks vary by district — verify before ordering a prefab unit or pouring footings. Confirm that the shed will not block required rear-yard open space.
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Select an appropriate foundation for Chicago conditions Chicago's frost depth requires footings to extend below the frost line (approximately 42 inches). Pre-fabricated sheds placed on skids or shallow piers may be acceptable for small exempt-sized structures, but permitted sheds must meet Title 14B foundation requirements. Site-built sheds over 100 sq ft typically need concrete piers or a full slab.
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Identify utility scope and trade permit needs Decide whether the shed will have electrical, plumbing, or mechanical work. Each utility trade requires a separate Chicago DOB permit and inspection regardless of whether the shed's footprint is building-permit-exempt.
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Submit through Chicago's e-permit portal For permitted sheds, apply through the Chicago DOB e-permit portal at chicago.gov/city/en/depts/bldgs. Submit the site plan, shed drawings, foundation details, and zoning compliance plot plan. Simple residential shed permits may qualify for over-the-counter same-day issuance.
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Clear plan review comments and pay fees DOB Building and Zoning reviewers check Title 14B structural and Title 17 zoning compliance. Correction notices are issued electronically; revise and resubmit through the portal. After approval, pay fees and post the permit before work begins.
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Build and complete required inspections Request inspections through the Chicago DOB online scheduling system or CHI311. Typical shed permit inspections include a foundation/footing inspection, framing inspection, and final. Trade inspections are scheduled separately and must also close out.
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Provenance
Code basis & official sources
Last verified 2026-04-18.
Chicago Zoning Ordinance (Title 17) Section 17-2-0305 (accessory structures in residential zoning districts — setbacks, height, lot coverage); Chicago Construction Code Title 14B (2019 Chicago Building Code) for structural requirements and permit thresholds — note that Chicago does not adopt the International Residential Code (IRC).
If you skip the permit
- Chicago Department of Buildings can issue a stop-work order and require removal or correction of unpermitted shed construction.
- A shed placed in a required setback or exceeding lot coverage can be ordered relocated or removed after construction.
- After-the-fact permits in Chicago can require exposing foundation elements and framing for inspection, adding significant cost.
- Unpermitted electrical, plumbing, or mechanical work creates fire, shock, and water-damage risks that go unverified without DOB trade inspections.
- Chicago landmark violations trigger a separate enforcement process beyond building-code issues.
- Administrative fines accumulate daily for unresolved Chicago building code violations and are enforced through the city's administrative hearing system.
- Title companies and lenders increasingly flag unpermitted accessory structures in Chicago during property sales or refinancing.
FAQ
Common Chicago shed permit questions
Do I need a permit to build a shed in Chicago, IL?
It depends on size and scope. Under the Chicago Construction Code and Zoning Ordinance Section 17-2-0305, a simple one-story shed at 100 square feet or less with no utility work may be exempt from the Chicago DOB building permit requirement. Sheds over 100 sq ft and any shed with electrical, plumbing, or mechanical work require a permit. Chicago's 100 sq ft threshold is lower than the 120 or 200 sq ft exemptions common in IRC-based jurisdictions.
Does Chicago use the International Residential Code (IRC) for sheds?
No. Chicago uses the Chicago Construction Code (Title 14B, 2019 edition), which is a locally developed code that differs from the IRC. Structural framing, foundation requirements, and connection details must comply with Title 14B, not the base IRC. This matters if you are using a contractor or prefab shed manual based on IRC specifications — verify Chicago-specific compliance.
What are Chicago's shed setback requirements?
Chicago does not have a single universal shed setback. Accessory structure setbacks are governed by Chicago Zoning Ordinance Section 17-2-0305 and vary by zoning district (RS-1, RS-2, RS-3, RT-4, and so on). Use the Chicago Zoning Map at gis.chicago.gov to identify the district and look up the applicable rear and side setback requirements before placing or ordering a shed.
What foundation does a Chicago shed need?
Chicago's frost depth is approximately 42 inches, so permitted sheds must have footings that extend below the frost line or otherwise comply with Chicago Construction Code Title 14B requirements for accessory structures. Small pre-fabricated sheds on concrete piers or skid systems are acceptable for exempt-sized units; larger site-built sheds typically require concrete piers or a full slab. Confirm the foundation design before pouring.
Does adding electricity to my Chicago shed require a permit?
Yes. Adding wiring, outlets, lighting, or a subpanel to a shed requires a separate Chicago DOB electrical permit and inspection, even when the shed itself is 100 square feet or under and otherwise exempt from the building permit requirement.
How much does a Chicago shed permit cost?
Chicago permit fees are based on project valuation. For a shed requiring a building permit, combined permit and plan review fees typically run $175–$600. Verify current fee amounts using the DOB fee schedule at chicago.gov/city/en/depts/bldgs.
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Disclaimer: Informational only — not legal advice. Rules change; verify with Chicago permitting staff before you build.