Do You Need a Permit for a Shed?
Short answer: most states exempt sheds under 120 square feet from a building permit under IRC R105.2 — but zoning setbacks, HOA rules, and anchoring requirements still apply. This guide breaks down the actual thresholds, state by state, with real costs and real code citations.
The Short Answer
Under IRC R105.2, a one-story detached accessory structure used as tool/storage shed is exempt from a building permit if the floor area does not exceed 120 square feet. But exemption from the building permit does not exempt you from zoning setbacks, HOA approval, electrical permits (if you wire it), or anchoring requirements in high-wind areas. A handful of states use different thresholds (NJ: 100 sq ft, VA: 256 sq ft, PA: 1,000 sq ft).
When You DO Need a Shed Permit
Even though small sheds are generally exempt, any one of the following conditions flips your shed into "permit required" territory in nearly every US jurisdiction:
Over the Exemption Threshold
If your shed exceeds the local floor-area threshold — typically 120 sq ft under IRC R105.2, though some states use 100, 150, 200, or even 256 sq ft — a full building permit is required. A 12×12 shed (144 sq ft) crosses the line in most IRC jurisdictions. Measure from the outside of the walls, including any overhangs if the local code counts them.
Electrical Wiring
Running any electrical circuit to a shed — even a single outlet or light — triggers an electrical permit under the National Electrical Code. This is separate from the building permit and applies regardless of shed size. NEC 225 covers outside branch circuits and feeders, and the installation must be done by a licensed electrician in most states.
Plumbing or Gas
Adding a sink, toilet, or gas line to a shed requires a plumbing permit (IPC) and/or gas permit (IFGC). This is common for pool sheds, workshops with utility sinks, and greenhouse sheds. Plumbing to a shed also requires winterization planning in cold climates.
Permanent Foundation
Sheds on a concrete slab, frost-protected footings, or a poured foundation are considered "permanent" construction in many jurisdictions and lose the exemption even at small sizes. Sheds on skids, blocks, or gravel pads are typically considered removable and retain the exemption.
Two Stories or Over 10 ft Tall
The IRC R105.2 exemption only covers "one-story" accessory structures. Two-story sheds, lofted barns, and any shed with a mean roof height above the zoning limit (typically 10–15 ft) require a full permit.
Flood, Fire, or Historic Zones
Sheds placed in FEMA flood zones, Wildland-Urban Interface (WUI) fire zones, or historic districts typically require permits regardless of size. Flood zones require elevation or flood-venting; fire zones require non-combustible materials; historic districts regulate appearance.
Sheds Used for Habitation
Any shed used as a bedroom, office, or living space — sometimes called an ADU (accessory dwelling unit) — is no longer a "shed" under code. It requires full building, electrical, plumbing, mechanical, and energy code compliance. This is one of the most-commonly-cited code violations.
When You DON'T Need a Shed Permit
Under IRC R105.2 (Work Exempt from Permit), a one-story detached accessory structure used as tool or storage shed is exempt from a building permit if all of the following are true:
Floor area does not exceed 120 square feet (or your state's threshold — see table)
Structure is one story only
Detached from the main dwelling
Used for tool and storage only — not habitation, sleeping, or commercial use
No electrical, plumbing, or mechanical systems
Not located in a flood, fire hazard, or historic zone
Meets local zoning setbacks (usually 3–10 ft from property lines)
Complies with HOA rules if applicable
Shed Permit Requirements by State (2026)
General state-level defaults for shed building permits. Individual cities may be stricter. "Varies" means most jurisdictions exempt below the threshold but enforce it above.
| State | Permit Required? | Exempt Threshold | Typical Fee |
|---|---|---|---|
| Alabama | Varies | 120 sq ft | $50–$200 |
| Alaska | Varies | 200 sq ft | $75–$250 |
| Arizona | Varies | 200 sq ft | $50–$200 |
| Arkansas | Varies | 120 sq ft | $50–$150 |
| California | Varies | 120 sq ft | $150–$500 |
| Colorado | Varies | 120 sq ft | $75–$300 |
| Connecticut | Varies | 200 sq ft | $75–$250 |
| Delaware | Varies | 200 sq ft | $50–$200 |
| Florida | Yes (most) | Any size (wind) | $100–$400 |
| Georgia | Varies | 120 sq ft | $75–$250 |
| Hawaii | Varies | 120 sq ft | $100–$300 |
| Idaho | Varies | 200 sq ft | $50–$200 |
| Illinois | Varies | 120 sq ft | $75–$300 |
| Indiana | Varies | 200 sq ft | $50–$250 |
| Iowa | Varies | 120 sq ft | $50–$200 |
| Kansas | Varies | 120 sq ft | $50–$150 |
| Kentucky | Varies | 200 sq ft | $50–$200 |
| Louisiana | Varies | 120 sq ft | $75–$250 |
| Maine | Varies | 200 sq ft | $50–$200 |
| Maryland | Varies | 100 sq ft | $75–$300 |
| Massachusetts | Varies | 120 sq ft | $75–$300 |
| Michigan | Varies | 200 sq ft | $50–$250 |
| Minnesota | Varies | 200 sq ft | $75–$300 |
| Mississippi | Varies | 120 sq ft | $50–$150 |
| Missouri | Varies | 200 sq ft | $50–$200 |
| Montana | Lenient | 200 sq ft | $50–$150 |
| Nebraska | Varies | 120 sq ft | $50–$150 |
| Nevada | Varies | 200 sq ft | $75–$250 |
| New Hampshire | Varies | 200 sq ft | $50–$150 |
| New Jersey | Yes | 100 sq ft (UCC) | $75–$250 |
| New Mexico | Varies | 200 sq ft | $50–$200 |
| New York | Yes (most) | Varies | $100–$500 |
| North Carolina | Varies | 12 ft × 12 ft | $50–$250 |
| North Dakota | Lenient | 200 sq ft | $50–$150 |
| Ohio | Varies | 200 sq ft | $50–$250 |
| Oklahoma | Varies | 120 sq ft | $50–$150 |
| Oregon | Varies | 200 sq ft | $75–$250 |
| Pennsylvania | Varies | 1,000 sq ft (UCC) | $75–$300 |
| Rhode Island | Varies | 200 sq ft | $75–$200 |
| South Carolina | Varies | 200 sq ft | $50–$200 |
| South Dakota | Lenient | 200 sq ft | $50–$150 |
| Tennessee | Varies | 200 sq ft | $50–$200 |
| Texas | Varies | 200 sq ft | $50–$300 |
| Utah | Varies | 200 sq ft | $50–$250 |
| Vermont | Varies | 200 sq ft | $50–$200 |
| Virginia | Varies | 256 sq ft (USBC) | $75–$300 |
| Washington | Varies | 200 sq ft | $75–$300 |
| West Virginia | Lenient | 200 sq ft | $50–$150 |
| Wisconsin | Varies | 150 sq ft (UDC) | $50–$250 |
| Wyoming | Lenient | 200 sq ft | $50–$150 |
Alabama
Birmingham and Huntsville enforce; rural counties often do not.
Alaska
Snow and wind loads critical; Anchorage permits sheds over 200 sq ft.
Arizona
Phoenix exempts under 200 sq ft if detached; zoning setbacks still apply.
Arkansas
Rural areas may not enforce; Little Rock follows IRC defaults.
California
CBC allows ≤120 sq ft exemption statewide, but most cities still require zoning clearance. Fire zones stricter.
Colorado
Denver exempts one-story accessory under 120 sq ft. Mountain towns add snow load review.
Connecticut
Each of the 169 municipalities sets its own threshold; zoning permit often separate.
Delaware
Coastal wind zone requires anchoring inspection for larger sheds.
Florida
FBC 2023 requires permits for most sheds due to hurricane wind resistance. Miami-Dade strictest.
Georgia
Atlanta follows IRC 120 sq ft exemption; some counties use 144 sq ft.
Sources: State building code adoption records (IRC R105.2), NJ UCC, PA UCC, VA USBC, WI UDC. Thresholds shown are state-level defaults. Municipal code databases accessed April 2026.
Zoning Setbacks & Height Limits
This is the single most-missed rule for shed owners: setbacks apply even to exempt sheds. A 10×10 shed that doesn't need a building permit can still be ordered to move if it sits too close to the property line.
Side & Rear Setback
3 to 10 feet
Most residential zones require sheds to sit 3–5 ft from side/rear property lines. Larger lots may require 10–25 ft.
Front-Yard Placement
Usually prohibited
Sheds are typically not allowed in front yards. Some zones restrict accessory structures to the rear half of the lot.
Maximum Height
10 to 15 ft
Zoning height limits for residential accessory structures are typically 10–15 ft measured to the mean roof height.
Maximum Coverage
20–30% of rear yard
Some zones limit total accessory structure coverage to a percentage of the rear yard or total lot.
Easements
Always off-limits
Utility and drainage easements along property lines cannot have structures placed in them — even exempt sheds. Violating this can force removal at your expense.
Corner Lots
Sight triangle
Corner lots have a "sight triangle" at the intersection where no structure can block driver visibility. Setbacks from both streets apply.
Running Electrical to a Shed
If you want lights, outlets, or power tools in your shed, you need an electrical permit — no matter how small the shed. Electrical work is governed by the National Electrical Code (NEC), adopted in every state with local amendments.
NEC 225 — Outside Branch Circuits and Feeders
Covers the circuit running from your main panel to the shed. Typically a buried UF cable or conduit. Minimum burial depth: 12" for PVC conduit, 18" for direct-bury UF cable, 24" for residential driveways.
NEC 250 — Grounding and Bonding
A shed that is a "separately derived system" (fed from a subpanel) may require its own grounding electrode (ground rod). A shed fed by a simple branch circuit typically does not need a separate ground rod.
NEC 210.8 — GFCI Protection
All 15- and 20-amp, 125-volt outlets in a shed must be GFCI protected — either by a GFCI receptacle, GFCI breaker, or breaker-panel-level protection. Outdoor receptacles also need weather-resistant (WR) covers.
Panel Work Requires a Licensed Electrician
In most states, the tie-in at the main electrical panel must be performed by a licensed electrician. Some states allow homeowners to do their own electrical work if it is their primary residence, but they still need to pull the permit and pass inspection.
Typical Cost
Electrical permit: $50–$150. Licensed electrician to run a circuit to a shed: $500–$2,000 depending on distance, trenching, and whether a subpanel is added. DIY material cost: $150–$400 for a simple branch circuit if you can legally do the work yourself.
Prefab vs. Built-On-Site Sheds
A common misconception: "I bought it prefab, so no permit." Wrong. Permit rules apply to the shed as it sits in your yard, not how it got there.
Prefab / Delivered
- • Same size/setback rules apply
- • May skip framing inspection if pre-engineered
- • Manufacturer should provide wind-load certification
- • Still requires permit if over threshold
- • Anchoring is the homeowner's responsibility
Built On-Site
- • Full inspections required if over threshold (footing, framing, final)
- • More flexibility in design
- • Construction drawings usually required
- • Easier to incorporate electrical from the start
- • You're responsible for code compliance at every step
Anchoring in High-Wind Zones
IRC R301.2 and the Florida Building Code require accessory structures to be anchored to resist local design wind loads. In hurricane zones (FL, LA, TX coast, Atlantic coast) and tornado-prone areas (OK, KS, TX, MO, AR), anchoring is not optional, even for exempt-size sheds.
Auger Anchors
Corkscrew-style metal anchors driven into the ground and cabled to the shed frame. Most common method for prefab sheds on skids. Typically 2–4 anchors per shed.
Concrete Footings
Piers poured below frost line with anchor bolts cast into the top. Most permanent method and required in hurricane zones for larger sheds.
Mobile Home Tie-Downs
Heavy-duty strap anchors used for mobile homes are also accepted for sheds in hurricane zones. Typically required in Florida for any structure on a non-permanent foundation.
Ground Anchors for Slab Sheds
Sheds on a concrete slab use J-bolts or wedge anchors bolted through the bottom plate into the slab. Spacing is typically every 4–6 ft around the perimeter.
Typical Shed Permit Costs
$25–$75
Zoning-only permit
(exempt-size sheds)
$75–$200
Small shed permit
(120–200 sq ft)
$150–$400
Large shed
(200–600 sq ft)
$400+
Shed + electrical
(combined permits)
How to Get a Shed Permit: Step by Step
Confirm whether you need a permit
Call your local building department. Give them the shed dimensions, whether it will have electrical, and where it will sit. Most departments will tell you over the phone or email.
Check setbacks and HOA rules
Pull your plat/survey and measure the setback requirements from your zoning code. If you're in an HOA, get written approval before anything else — HOAs can block a shed your city would allow.
Prepare a site plan
A simple top-down drawing showing your house, property lines, proposed shed location, and distances to each property line. Hand-drawn is fine in most jurisdictions for small projects.
Get shed plans or manufacturer spec sheet
For built-on-site sheds, basic construction drawings showing framing, roof, and foundation. For prefab sheds, the manufacturer's spec sheet with wind-load rating is usually sufficient.
Submit your application and pay the fee
Apply online or in person. Most cities process shed permits within 3–10 business days. Combined shed + electrical permits take 1–3 weeks.
Build and schedule inspections
Post the permit on-site. Inspections typically include: foundation/anchoring, framing (if built on-site), electrical (if applicable), and final.
Pass final inspection
The final inspection certifies the shed meets code. Keep the approved permit permanently — you'll need it when selling your home.
Key Code References
IRC 2021 Section R105.2 — Work Exempt from Permit
The foundational rule: "One-story detached accessory structures used as tool and storage sheds, playhouses and similar uses, provided the floor area does not exceed 200 square feet (18.58 m²)." Note: the IRC base text uses 200 sq ft, but many jurisdictions (including California CBC) amend this down to 120 sq ft.
IRC 2021 Section R301.2 — Climatic and Geographic Design Criteria
Governs wind, snow, seismic, and flood load requirements. Even exempt sheds must meet local design wind speeds for anchoring in high-wind areas.
IRC 2021 Section R108 — Fees
Authorizes permit fees and double/triple fee penalties for work started without a permit.
NEC 2023 Article 225 — Outside Branch Circuits and Feeders
Governs electrical circuits running from the main building to the shed. Minimum burial depth, disconnect requirements, and overcurrent protection.
NEC 2023 Article 250 — Grounding and Bonding
Covers whether a shed subpanel needs its own grounding electrode system.
NEC 2023 Section 210.8 — GFCI Protection
Requires GFCI protection on all 15/20A 125V outlets in accessory buildings.
Local Zoning Code
Setbacks, height limits, maximum coverage, and front-yard prohibitions — all set locally, not by the IRC. Usually found in your city's municipal code under "Zoning" or "Accessory Structures."
What Happens If You Skip the Permit
Fines: $200 to $5,000
Most cities charge double or triple the normal permit fee as a penalty for work done without a permit. Some jurisdictions impose daily fines until the violation is corrected.
Forced Relocation or Demolition
If the shed violates a setback, you can be ordered to move it — or tear it down. Cities can and do enforce this, especially after a neighbor complaint.
Insurance Claim Denial
If your shed is damaged by wind, fire, or theft, an unpermitted structure may not be covered. Worse, if the shed causes damage (falling on a neighbor's car, electrical fire), liability coverage can be denied.
Home Sale Problems
Unpermitted structures must be disclosed. Buyer inspectors will flag them. Appraisers may not include them in the home value. Retroactive permitting typically costs 2–3× the original fee.
Electrical Hazard Liability
Unpermitted DIY electrical to a shed is one of the most common causes of outbuilding fires. If your unpermitted wiring causes a fire, you are personally liable.
Frequently Asked Questions
Do I need a permit for a shed under 120 square feet?
In most states, a detached one-story shed of 120 square feet or less is exempt from a building permit under IRC R105.2 "Work exempt from permit." However, this exemption only covers the building permit — you still need to comply with zoning setbacks, height limits, HOA rules, and in some jurisdictions a separate zoning or accessory-structure permit. A handful of states (New Jersey, Virginia, Pennsylvania) use different thresholds.
What size shed can I build without a permit?
The most common exemption threshold is 120 square feet (about 10×12), coming directly from IRC R105.2. Some states use 200 sq ft (Michigan, Ohio, Oregon), North Carolina uses 12×12 ft, Virginia allows 256 sq ft, and Pennsylvania allows up to 1,000 sq ft at the state level. Always verify with your local building department because cities can override the state default with stricter rules.
Do I need a permit for a prefab shed from Home Depot or Lowe's?
The permit rules apply to the shed, not how you bought it. A prefab shed delivered to your yard still counts as an accessory structure under IRC R105.2. If it is under your state's exemption threshold and meets zoning setbacks, no permit is needed. If it exceeds the threshold or has electrical, you still need a permit even though it was built off-site.
Do I need a permit to run electricity to my shed?
Yes — almost universally. Running electrical to a shed triggers an electrical permit in virtually every jurisdiction regardless of shed size, because it involves a new branch circuit from your main panel or subpanel. This is governed by the National Electrical Code (NEC), particularly NEC 225 (Outside Branch Circuits and Feeders) and NEC 250 (Grounding). A licensed electrician is required in most states for the panel tie-in.
What are the setback requirements for a shed?
Setbacks — the minimum distance a shed must sit from property lines — are set by local zoning, not the building code. Typical residential setbacks are 3 to 10 feet from side and rear property lines, though front-yard placement is often prohibited. Corner lots have additional "sight triangle" rules. These apply even if the shed is too small to need a building permit. Violating a setback can result in forced removal.
How tall can a shed be without a permit?
Most IRC-based jurisdictions require sheds to be one story and under a certain mean roof height — commonly 10 to 15 feet — to qualify for the exemption. Zoning height limits for accessory structures typically cap out at 12 to 15 feet. Two-story sheds, lofted barns, and tiny-home-style sheds almost always require a full building permit.
Do I need a permit for a shed in an HOA neighborhood?
An HOA approval and a building permit are two independent approvals. Your HOA can require review even when your city does not. HOA restrictions commonly cover color, roof pitch, siding material, placement, maximum size, and whether sheds are allowed at all. Get HOA approval first, then apply for any required permits.
Does my shed need to be anchored?
Yes — especially in hurricane zones (Florida, Gulf Coast, Atlantic coast), tornado alley (Oklahoma, Kansas, Texas), and high-wind areas. IRC R301.2 and FBC require accessory structures to resist design wind loads, and building departments in wind-prone areas will require engineered anchoring (ground anchors, auger anchors, or concrete footings) even for exempt-size sheds. This is a safety issue — unanchored sheds become projectiles in severe weather.
How much does a shed permit cost?
Shed permits typically cost $50 to $300. Small sheds just over the exemption threshold are usually at the low end ($50–$150). Larger sheds with foundation and electrical can run $200–$500. California, New York, and New Jersey have the highest permit fees. Valuation-based fee structures charge roughly 1–2% of the estimated shed cost.
What happens if I build a shed without a required permit?
Penalties range from warning letters to fines of $500–$5,000, stop-work orders, and in severe cases forced removal of the structure. If a zoning setback was also violated, the city can require you to move or demolish the shed. Unpermitted structures must be disclosed when selling your home and can lower your appraisal or kill a sale. Retroactive permits are often available but typically cost 2–3× the normal fee.
Does a shed on skids need a permit?
A shed on skids or runners (no foundation, designed to be moveable) is often considered a "portable storage building" rather than a permanent structure. Some jurisdictions exempt these from building permits regardless of size, while others treat them the same as any accessory building. Zoning setbacks still apply either way. Check local code before assuming it's exempt.
Do I need a permit for a chicken coop or garden shed?
Small chicken coops and garden sheds under 120 sq ft follow the same IRC R105.2 exemption as any accessory structure. However, many cities have separate ordinances specifically for backyard chickens (coop size, number of hens, distance from neighbors) that apply regardless of the building permit question. Zoning setbacks still apply.
Related Permit Guides
This guide is informational and was last updated April 2026. Shed permit rules vary by city, county, and state, and are frequently amended. State-level thresholds cited are based on IRC R105.2 adoptions and known state amendments. Always verify current requirements with your local building department before starting construction. This is not legal or engineering advice.