Whether you need a permit to build a shed depends on three things: where you live, how big the shed is, and what type of foundation you’re using. There is no federal rule on this — permit requirements are set at the county or municipal level, which means the answer in one county can be completely different from the answer in the county next door.
Skipping a permit when one is required isn’t just a paperwork problem. It can result in fines, a stop-work order, or being forced to tear down a finished structure at your own expense. It can also complicate your home sale years later when an unpermitted structure shows up on a property disclosure or a buyer’s inspection report. Getting this right at the start is worth 15 minutes of research.
This guide walks you through exactly how to find out what your county requires, what a permit application involves, how much it costs, and what the consequences are if you skip it when you shouldn’t. If you haven’t yet decided on a shed size or style, see our full how-to guides hub — choosing the right size before you apply can sometimes keep you under the exemption threshold entirely.
Quick Answer
Most jurisdictions in the United States require a building permit for sheds over 100–200 square feet. Sheds below that threshold are often classified as accessory structures and exempt from permitting — but not universally. Some counties require permits for any permanent structure regardless of size. Others have no requirement at all, particularly in rural or unincorporated areas.
The key variables are: your county’s square footage threshold, whether your shed will be on a permanent foundation, whether it will have electrical service, and whether your property is subject to HOA restrictions or flood zone requirements. Each of these can independently trigger a permit requirement even when other factors wouldn’t.
The only definitive answer comes from your local building department. Most counties make this easy to find out — and the process below takes about 10 minutes.
How to Find Out If You Need a Permit (Step by Step)
Follow these four steps in order. Most people get a clear answer at step one or two without needing to make a phone call.
Step 1: Search “[Your County] building permit shed”
Start with your county name — not your city or state. Permit requirements in the US are almost always set at the county level, and searching by city or state frequently returns incorrect or incomplete information. For example, if you live in Austin, Texas, search “Travis County building permit shed” — not “Austin shed permit” or “Texas shed permit.”
Most county building and planning departments have permit requirements published online, often under sections titled “Accessory Structures,” “Residential Permits,” or “Zoning Information.” Look for language about square footage thresholds, setback requirements, and what conditions are included in the exemption.
Step 2: Find the square footage exemption threshold
You’re looking for a specific number — something like “accessory structures under 120 square feet are exempt from building permit requirements.” Common thresholds are 100 sq ft, 120 sq ft, and 200 sq ft. Note that the threshold applies to the total footprint of the structure, not just the interior floor area — a 10×10 shed with a 2-foot roof overhang may technically have a larger footprint than its interior dimensions suggest.
Also check whether the exemption has additional conditions. In many jurisdictions, the size exemption only applies if the structure has no electrical wiring, no plumbing, and is not on a permanent foundation. If your county’s threshold is 120 sq ft, a 4×8 lean-to (32 sq ft) or a 6×10 garden shed (60 sq ft) will typically fall well below the limit — while a 12×10 barn shed (120 sq ft) lands right at the line and warrants a direct check.
Step 3: Check for additional permit triggers
Even if your shed qualifies for a size-based exemption, certain conditions can independently require a permit. Check for the following before assuming you’re clear:
- Electrical service: Running power to a shed almost always requires an electrical permit, separate from any building permit — even if the shed itself doesn’t need one. Contact your county’s electrical inspection department before starting if you plan to have lights or outlets.
- Permanent foundation: A shed on a poured concrete slab is generally considered a permanent structure, which in many jurisdictions triggers a permit requirement regardless of size. Sheds on gravel pads, skids, or concrete blocks are more commonly treated as non-permanent and are more likely to qualify for exemptions.
- Flood zone: Properties in FEMA-designated flood zones are subject to additional restrictions through the National Flood Insurance Program. Any new structure in a flood zone — including small sheds — may require a flood elevation certificate and additional permits.
- Historic district: Properties in locally designated historic districts often require approval from a historic preservation commission before adding any new structure, even a small shed.
- HOA restrictions: HOA rules operate completely independently of county building permits. Your HOA may restrict shed size, placement, exterior color, and materials — and may require architectural committee approval before you break ground. We cover this in detail further down the page.
Step 4: Call or email the building department directly
If the county website doesn’t give you a clear answer, call directly. Be specific: “I’m planning to build a [size] shed on a [foundation type] at [address]. Does this require a building permit?” Get the name of the person you spoke with and the date. Many counties also accept permit inquiries by email, which gives you a written record. Once you have your answer, the next practical step is building out your full project budget, including the permit fee.
What Does a Shed Permit Cost?
In most US jurisdictions, a shed building permit costs between $50 and $200. Some counties charge a flat rate; others calculate the fee as a percentage of the estimated construction value or charge per square foot. Some also charge a separate plan review fee ($50–$150) and an inspection fee. Ask for a complete breakdown of all fees when you contact the building department.
The permit fee is a minor cost relative to the total build. A $100 permit on a $3,000 shed is a 3% premium that gives you legal standing, a professional check on your framing, and protection against future complications at resale.
What the Permit Process Actually Looks Like
For a standard residential shed, the permit process is straightforward. Here’s what it involves from start to finish.
Prepare your site plan. A site plan is a simple overhead diagram of your property showing the property boundaries, your house, and the proposed shed location. A hand-drawn sketch with accurate measurements is accepted by most building departments. The critical information is the distance from the shed to each property line and to your house. Read the setback section below before drawing your site plan if you’re not sure where to place the shed.
Prepare your shed plans. You’ll need to submit a floor plan, wall framing plan, roof framing plan, and exterior elevations. Our complete PDF plans include all of these. The full PDF version from our Etsy shop includes the additional dimensions and construction details that most building departments require for permit submission.
Submit and pay. Submit your site plan, shed plans, and application form to the building department — many counties now accept online submissions. Pay the permit fee. Processing time is typically 1–3 weeks, though some counties offer same-day approval for small accessory structures.
Build, then schedule an inspection. Once you have your permit, begin construction. When framing is complete — walls raised, roof framed — but before siding and roofing go on, schedule a framing inspection. The inspector checks that wall spacing, header sizes, and connections meet local code. For a standard 2×4 framed shed built from our plans, this is generally a formality.
Get your certificate of completion. Some counties issue a final certificate; others simply close out the permit. Either way, keep a copy of your permit and inspection records — you may need them when you sell the property.
Common Permit Exemption Thresholds by State
The table below shows the most common exemption thresholds by state. As a general rule: if you’re building a small firewood shed or compact lean-to under 80 sq ft, you’re likely exempt in most states. If you’re building anything 10×10 or larger, plan for a permit. Always verify with your local building department — these are patterns, not guarantees.
| State | Typical Exemption Threshold | Notes |
|---|---|---|
| California | 120 sq ft | No plumbing or electrical; must comply with setbacks |
| Texas | Varies widely by county | Many rural/unincorporated areas have no requirement |
| Florida | 100 sq ft | Stricter rules in coastal and hurricane zones |
| New York | Varies by municipality | NYC and suburbs significantly stricter than upstate |
| Georgia | 120 sq ft | Exemption typically requires no electrical service |
| Ohio | 200 sq ft | In unincorporated areas; cities vary |
| Pennsylvania | Varies by township | Many townships require permits for any accessory structure |
| Colorado | 120–200 sq ft | Threshold varies by county; mountain counties often stricter |
| Washington | 200 sq ft | No plumbing or electrical; must meet setbacks |
| Michigan | 200 sq ft | In most townships; check municipality rules |
What Happens If You Build Without a Required Permit?
Stop-work orders and fines. If a building inspector or code enforcement officer becomes aware of unpermitted construction — through a neighbor complaint or a routine inspection — they can issue a stop-work order immediately. Fines commonly run $200–$1,000 or more and can accrue daily. This can easily exceed the total cost of the permit you skipped, which for most sheds runs $50–$200.
Mandatory removal. Where the structure violates setback requirements or is built in a prohibited location, the building department can order demolition at the property owner’s expense. You pay to build it, pay the fines, and then pay to tear it down.
Complications at resale. Unpermitted structures are a standard disclosure question in most states. Buyers may demand removal or retroactive permitting before closing. If you don’t disclose it and it’s discovered later, you may face legal action.
Insurance gaps. A shed built without a required permit may not be covered under your homeowner’s insurance if it’s damaged by fire, wind, or falling trees — particularly worth considering if you’re storing valuable tools or equipment inside.
Retroactive permitting. Some counties allow after-the-fact permits, but the process is harder and typically costs two to three times more than getting the permit upfront — and it may require opening up finished framing for inspection.
Setback Requirements: The Most Common Permit Complication
A setback is the minimum required distance between your shed and a property line, your house, or other structures. Setback requirements are set by local zoning ordinances and apply whether or not your shed requires a building permit.
Violating a setback is the single most common reason shed projects get stopped or denied. Measure carefully and check your county’s setback rules before you commit to a location — before you pour a foundation or dig a single post hole.
- From rear property line: 5–10 feet in most residential zones. Many homeowners place sheds at the very back of their yard without realizing the property line may be closer than the fence.
- From side property line: 3–5 feet in most residential zones. Corner lots sometimes have different rules on the street-facing side.
- From your primary residence: Some counties require a minimum separation of 6–10 feet between your house and any accessory structure for fire code reasons — particularly relevant if you’re planning an attached lean-to shed.
- From other structures: Some jurisdictions require a minimum distance from other outbuildings like detached garages. Worth checking if you’re adding a second shed to a property that already has one.
One critical note: your fence is not necessarily your property line. Fences are frequently installed a foot or two inside the actual boundary. If you’re locating a shed near the fence line, check your property’s plat (available from your county assessor’s office) before assuming the fence marks the boundary.
HOA Rules: A Completely Separate Process
If your property is in an HOA, the HOA’s rules operate independently of county permitting — and are sometimes stricter. Satisfying county permit requirements does not mean HOA approval. You need both.
- Maximum size: Many HOAs cap shed size at 100–150 sq ft, smaller than what your county permits. If your HOA’s limit is 120 sq ft, the 8×10 barn shed (80 sq ft) and the lean-to sheds in various sizes all fall comfortably within that cap.
- Placement restrictions: HOAs frequently prohibit sheds visible from the street or common areas, which can limit where on your lot you’re allowed to build.
- Exterior appearance: Your shed may be required to match your house in siding color, roofing material, and trim style. Our plans specify standard T1-11 siding and asphalt shingles — materials most HOAs consider acceptable and that can be painted any color.
- Pre-approval requirement: Most HOAs require written approval from an architectural review committee before construction begins. This process can take 2–6 weeks depending on when the committee meets. Our plan drawings and full PDF plans are formatted to work as HOA submission documents as well as permit documents.
Read your HOA’s CC&Rs and get written approval before you finalize your shed design — not after you’ve already ordered materials.
Frequently Asked Questions
Do I need a permit for a 10×10 shed?
A 10×10 shed is exactly 100 square feet — right at the exemption threshold in many jurisdictions. In counties where the threshold is “under 100 sq ft,” a 10×10 shed technically requires a permit. The only way to know for certain is to check with your specific county building department.
Do I need a permit for a 12×12 shed?
A 12×12 shed is 144 square feet, which exceeds the 100–120 sq ft exemption threshold in the majority of US jurisdictions. In most counties, you’ll need a building permit. If you’re going to pull a permit anyway, it’s worth considering stepping up to our 12×16 gable roof shed, which gives you significantly more storage on a similar footprint for a modest increase in build complexity.
Can I build a shed directly next to my fence?
Almost certainly not. Most county zoning ordinances require a minimum setback of 3–5 feet from side and rear property lines. Your fence is likely at or near your property line, so your shed needs to be set back that minimum distance. Always verify the exact property line location before finalizing shed placement.
How long does a shed permit take?
Typically 1–3 weeks from submission to issuance in most residential areas. Some counties offer same-day approval for small accessory structures. If you’re planning a spring build, submit your application in late winter — use that time to finalize your plan selection and get your materials list together so you’re ready to buy lumber the day the permit arrives.
Do I need a permit for a shed on skids?
Sheds on skids are treated differently in some jurisdictions — because they’re technically portable, some counties classify them as temporary and exempt them from permits. However, this is not universal. The size of the shed still typically determines whether a permit is required. Check with your county building department and specifically mention the foundation type you’re planning.
Do I need a permit for a 6×8 or 8×10 shed?
Both fall below the 100 sq ft exemption threshold in most US jurisdictions and are likely exempt from permit requirements in the majority of areas. However, exemptions may still not apply if the shed has electrical service, is on a permanent foundation, or your property is in a flood zone. Verify locally if any of those conditions apply to your project.
What plans do I need to submit for a shed permit?
Most building departments require a site plan, floor framing plan, wall framing plan, roof framing plan, and exterior elevations. Our full PDF plans — available for every shed on this site — include all of these in a format that meets most building department requirements, formatted at standard 8.5×11″ with all dimensions, material callouts, and structural details.
Ready to Pull Your Plans Together?
Once your permit is approved, every plan on this site includes everything you need to go from bare ground to a finished, weathertight shed — materials list, cut list, framing plans, 3D diagrams, and step-by-step instructions.
