🚗 Garage / Carport permit in Missouri
A new detached or attached garage or open carport for vehicle storage. Here is the Missouri-specific rule: who issues it, typical fees, timeline, go / no-go, and the official source to verify.
Garage / Carport permit in Missouri
The Missouri rule for a garage / carport, with fee range, timeline, go / no-go, and the official source.
Missouri
🚗 Garage / Carport
Exact permit fees are set by the local building department. WikEst shows the published or code-based range where one exists, linked to its official source — verify the final amount at the source before budgeting.
🚗 Garage / Carport permit fee in Missouri
Permit requiredGenerally allowedcity authority
Permit fee range
Building permit fee set locally; zoning clearance may be required first.
Typical timeline
Varies by municipality — typically several weeks for full plan review.
Setback
—
Exempt if
Not size-exempt
A new detached or attached garage requires a building permit. Kansas City requires a residential building permit for all new construction and additions to one- and two-family structures.
Official sources: American Wood Council — Missouri Adopted I-Codes (local adoption; no statewide mandate) · City of Kansas City, MO — Development Process Guide (Permits Division)
Representative cities for Missouri: St. Louis, Kansas City.
All 20 project fee ranges in Missouri
Official-source ranges where published; “By local jurisdiction” means no flat fee is published and the amount is set case by case.
| Project | Permit? | Authority | Fee range | Go / no-go |
|---|---|---|---|---|
| 🏠 Accessory Dwelling Unit (ADU) | yes | city | Permit fees set locally by each municipality — verify with the city building department (St. Louis Building Division or KC Permits Division). | case-by-case |
| 🪵 Deck / Porch | conditional | city | Permit fees set locally by each municipality — verify with the city building department. | allowed |
| 🧱 Fence / Wall | conditional | city | Usually no building permit under the height threshold; zoning setback/height rules apply. Verify locally. | allowed |
| 🛖 Shed / Outbuilding | conditional | city | No fee under the exemption; a permit fee applies if over the local threshold. | allowed |
| 🪜 Basement Finish | yes | city | Building permit fee set locally; trade permits billed separately. | allowed |
| 🚗 Garage / Carport | yes | city | Building permit fee set locally; zoning clearance may be required first. | allowed |
| ☀️ Rooftop Solar PV | yes | city | Electrical/structural permit fee set locally by the municipality. | allowed |
| 🌡️ HVAC Replacement | yes | city | Mechanical permit fee set locally by the municipality. | allowed |
| 🍳 Kitchen Remodel | yes | city | Building permit fee; trade permits (plumbing/electrical) billed separately. | allowed |
| 🛁 Bathroom Remodel | yes | city | Building permit fee; trade permits (plumbing/electrical) billed separately. | allowed |
| 🏗️ Room Addition | yes | city | Building permit fee based on valuation; zoning and plan review apply. | allowed |
| 🪟 Window / Door Replacement | conditional | city | Permit fee if changing the opening; in-kind swap is often exempt. | allowed |
| 🏘️ Roof Replacement | conditional | city | Roof-covering permit fee set locally; in-kind re-roof may be exempt. | allowed |
| 🅿️ Driveway / Parking Pad | conditional | city | No building permit for private flatwork; a right-of-way/curb cut needs a separate permit. | allowed |
| 🏊 Swimming Pool / Spa | yes | city | Building permit fee; barrier fencing required by code. | allowed |
| 🧱 Retaining Wall | conditional | city | No fee under the exemption; a permit applies if over the threshold. | allowed |
| 💥 Demolition / Teardown | yes | city | Demolition permit fee set locally by the municipality; verify with the city building department. | allowed |
| 🚰 Septic System | yes | state | Onsite sewage construction permit fee set by the MO DHSS Onsite Sewage Program; verify with the program (573-751-6095). | allowed |
| 🔌 EV Charger | yes | city | Electrical permit fee set locally by the municipality. | allowed |
| ⚡ Standby Generator | yes | city | Electrical (and gas, if fuel-fired) permit fee set locally by the municipality. | allowed |
Missouri rule at a glance
Needs permit
yes
Issuing authority
city
Typical fee
Building permit fee set locally; zoning clearance may be required first.
Typical timeline
Varies by municipality — typically several weeks for full plan review.
Setback
—
Exempt if
Not size-exempt
A new detached or attached garage requires a building permit. Kansas City requires a residential building permit for all new construction and additions to one- and two-family structures.
Frequently asked questions
Does a garage / carport need a permit in Missouri?
In Missouri, a garage / carport is generally required to have a permit. Issuance is at the city level. Confirm the exact threshold with the local building department using the sources on this page.
Who issues the garage / carport permit in Missouri?
Missouri permits for this project are handled at the city level — usually the city or county building department. Use the county permit authority lookup to find the exact office for your property.
How much does a garage / carport permit cost in Missouri?
Fees are set locally in Missouri and are not a single statewide number. Open the official authority link on this page for the current schedule.
What exemptions apply to a garage / carport in Missouri?
Baseline exemptions (e.g. small detached structures, low decks) may apply but Missouri or your city can amend them. Verify with the local building department.
🗺️ All projects in Missouri
The full Missouri permit guide across 20 home projects.
📊 Garage / Carport in every state
Compare the garage / carport rule across all U.S. states.
Garage / Carport in other states
| State | Permit? | Authority | Typical fee | Timeline | Go / No-Go | Key notes |
|---|---|---|---|---|---|---|
| California | Permit required | city | Valuation-based fee; flat plus per-square-foot. Verify with the city building department. | 2–8 weeks. | Generally allowed | A new detached or attached garage requires a full building permit; conversions of an existing, legally established garage may be exempt if no structural change occurs. Exempt: N/A |
| Texas | Permit required | city | Valuation-based fee. Verify with the city building department. | 2–8 weeks. | Generally allowed | A new garage requires a building permit; Austin reviews to the 2024 IRC with local amendments. Exempt: N/A |
| Florida | Permit required | city | Valuation-based fee. Verify with the city building department. | 2–8 weeks. | Generally allowed | A new garage requires a building permit under the Florida Building Code Residential. Exempt: N/A |
| New York | Permit required | city | Valuation-based fee. Verify with the city building department. | 2–8 weeks. | Generally allowed | A new garage requires a building permit under the RCNYS / NYC Building Code. Exempt: N/A |
| Pennsylvania | Permit required | city | Municipal building permit fee; zoning clearance may be required first. | — | Generally allowed | A new detached or attached garage requires a building permit. Philadelphia requires zoning clearance before the building permit. |
| Illinois | Permit required | city | Municipal building permit fee. | — | Generally allowed | A new garage requires a permit. Chicago’s Easy/Express Permit covers private (detached frame) garages; elsewhere a standard building permit applies. |
| Ohio | Permit required | city | Columbus minimum permit fee $125; total scales with valuation. | — | Generally allowed | A new garage requires a permit (Columbus lists detached garages/sheds permits). |
| Georgia | Permit required | city | Atlanta minimum permit cost $150 plus $25 fee; total scales with valuation. | — | Generally allowed | A new garage requires a building permit. |
| North Carolina | Permit required | city | Valuation-based building permit; verify with the city. | Plan review typically 2–4 weeks plus inspections. | Generally allowed | New detached or attached garages and carports require a building permit and zoning/setback review. Exempt: Any new detached or attached garage requires a permit (no size exemption). |
| Michigan | Permit required | city | Valuation-based building permit; verify with the city. | Plan review typically 2–4 weeks plus inspections. | Generally allowed | New detached or attached garages and carports require a building permit and zoning/setback review. Exempt: Detroit exempts detached accessory structures ≤200 sq ft; new garages over that need a permit. |
| New Jersey | Permit required | city | Construction permit based on valuation plus trade permits; verify with the city. | Plan review commonly up to 20 business days plus inspections. | Generally allowed | New garages and carports require a UCC construction permit and zoning/setback review. Exempt: Any new detached or attached garage requires a construction permit. |
| Virginia | Permit required | city | Building permit based on valuation; verify with the city. | Plan review ~10 business days plus inspections. | Generally allowed | New garages and carports require a USBC building permit and zoning/setback review. Richmond lists garages as permit-required. Exempt: Any new detached or attached garage requires a building permit. |
| Washington | Permit required | city | Valuation-based; includes trade permits. | New structure review; complex projects 8–16 weeks. | Generally allowed | Attached and detached garages require a full building permit and plan review. Exempt: No exemption — a new garage is a new structure. |
| Arizona | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages require a full building permit and plan review. Exempt: Phoenix: new detached structures over 200 sq ft require a permit. |
| Massachusetts | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages require a full building permit and plan review. Exempt: No exemption — a new garage is a new structure. |
| Tennessee | Conditional | city | Valuation-based when a permit is required. | New-structure plan review; varies by city. | Generally allowed | Converting a garage to habitable space requires a permit and code compliance. Exempt: State program exempts detached garages/sheds not used for living; local codes may differ. |
| Indiana | Permit required | city | Building permit fee set by the local department; zoning clearance may be required. | — | Generally allowed | A new attached or detached garage requires a building permit. |
| Maryland | Permit required | city | Building permit fee set by the city; zoning clearance may be required. | — | Generally allowed | A new attached or detached garage requires a building permit. |
| Wisconsin | Conditional | city | Building permit fee set by the municipality if required by local ordinance. | Varies by municipality — typically several weeks for full plan review. | Generally allowed | Detached garages are NOT covered by the UDC (the state does not regulate them), but municipalities commonly require a building permit by ordinance. An attached garage is an addition to the dwelling and is covered by the UDC. Verify with your local building inspection department. |
| Alaska | Permit required | city | Valuation-based; includes trade permits. | — | Generally allowed | New garages require a full building permit, frost-depth footings, and plan review. |
| Alabama | Permit required | city | Valuation-based; includes trade permits. | Birmingham residential plan review typically 5–10 business days. | Generally allowed | New attached or detached garages require a full building permit and plan review (fire-separation details for attached garages). |
| Arkansas | Permit required | city | Valuation-based; Little Rock minimum building-permit fee $50 (work over $5,000 or requiring inspection). | Little Rock residential plan review typically 5–15 business days. | Generally allowed | New attached or detached garages require a full building permit and trade permits. |
| Colorado | Permit required | city | Valuation-based; includes trade permits. | — | Generally allowed | New attached or detached garages require a full building permit and trade permits. |
| Connecticut | Permit required | city | Valuation-based; includes trade permits. | — | Generally allowed | New attached or detached garages require a full building permit and trade permits. |
| Delaware | Permit required | county | Valuation-based; includes trade permits. | — | Generally allowed | New attached or detached garages require a full building permit and trade permits. |
| Hawaii | Permit required | county | Valuation-based; includes trade permits. | New-structure plan review; varies by county. | Generally allowed | Attached and detached garages require a full building permit and plan review. Verify with the county building department. Exempt: New detached structures over 120 sq ft require a permit (smaller are still subject to zoning). |
| Iowa | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages require a full building permit and plan review, including fire separation from the home. Exempt: Detached garages over the 120 sq ft accessory-structure limit need a permit. |
| Idaho | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages require a full building permit and plan review. Verify with the local building department. Exempt: New detached structures over the exemption threshold (120–200 sq ft) require a permit. |
| Kansas | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages require a full building permit and plan review where a code is adopted. Exempt: Detached garages over local accessory-structure limits need a permit. |
| Kentucky | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages require a full building permit and plan review. Exempt: Detached garages over the 120 sq ft accessory-structure limit need a permit. |
| Louisiana | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by parish/city. | Generally allowed | Attached and detached garages require a full building permit and plan review, with wind/hurricane detailing. Exempt: Detached garages over the 120 sq ft accessory-structure limit need a permit. |
| Maine | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by municipality (typically 2–4 weeks). | Generally allowed | Attached and detached garages require a full building permit and plan review. Footings must reach local frost depth (48–60 in). Exempt: Detached accessory structures over 200 sq ft require a permit (under 200 sq ft may be exempt). |
| Minnesota | Conditional | city | Building permit fee set by the municipality if required. | Varies by municipality — typically several weeks for full plan review. | Generally allowed | An attached garage is an addition to the dwelling and requires a building permit. A detached garage is an accessory structure; small detached garages are often exempt but larger ones need a permit. Verify locally. |
| Mississippi | Conditional | city | Where enforced, attached garages (additions) are permitted; verify locally. | Varies by jurisdiction. | Generally allowed | An attached garage is an addition requiring a permit where a code is enforced. A small detached garage may be exempt. If your jurisdiction does not enforce a code, no permit is required. |
| Montana | Conditional | city | Where enforced, attached garages (additions) are permitted; verify locally. | Where enforced, typically several weeks for plan review. | Generally allowed | An attached garage is an addition requiring a permit where a code is enforced. A small detached garage may be exempt (e.g., Billings exempts detached sheds/accessory structures under 200 sq ft). In non-certified areas, single-family homes are exempt from the state building permit. |
| North Dakota | Permit required | city | — | — | Generally allowed | Setbacks, lot coverage, and energy-code (2024 IECC) compliance are reviewed; frost-depth footings required. Exempt: New detached structures over the accessory-exemption size require a permit. |
| Nebraska | Conditional | city | Building permit fee set by the municipality if required. | Varies by municipality — typically several weeks for plan review. | Generally allowed | An attached garage is an addition and requires a building permit. A small detached garage may be exempt. Verify locally. |
| New Hampshire | Permit required | city | — | — | Generally allowed | Setbacks, lot coverage, and energy-code compliance are reviewed. Repair of an existing garage may be exempt. Exempt: New detached structures over the local accessory-exemption size require a permit. |
| New Mexico | Permit required | city | — | — | Generally allowed | Setbacks, lot coverage, and energy-code compliance are reviewed. Repair of an existing garage may be exempt. Exempt: New detached structures over the accessory-exemption size require a permit. |
| Nevada | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by jurisdiction. | Generally allowed | Attached and detached garages require a full building permit and plan review. Exempt: New detached structures over 200 sq ft require a permit; attached garages always permitted. |
| Oklahoma | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached garages require a continuous load path for wind; footings must address expansive-clay soils. Exempt: All garages require a permit in jurisdictions enforcing the state code. |
| Oregon | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages over the threshold require a full building permit and plan review. Exempt: Building or moving a carport, garage, or shed over 200 sq ft requires a permit. |
| Rhode Island | Permit required | city | Valuation-based; includes trade permits (statewide formula, $125 min). | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages require a full building permit and plan review; footings below frost depth. Exempt: All garages over the 64 sq ft exemption require a permit. |
| South Carolina | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages require a full building permit and plan review; coastal wind-load connections reviewed. Exempt: All garages over the 200 sq ft exemption require a permit. |
| South Dakota | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached garages must match the house frost-depth footings (≈42 in in Sioux Falls/Rapid City); a residential contractor license is required for hired work in Sioux Falls. Exempt: Sioux Falls requires a building permit for garages; detached garages over 200 sq ft clearly require one. |
| Utah | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages require a full building permit and plan review under the Utah Construction Code. Exempt: New detached structures over the IRC threshold require a permit. |
| Vermont | Conditional | city | Valuation-based where enforced; includes trade permits. | New-structure plan review where enforced. | Generally allowed | In opt-out towns a new garage may not require a state/local building permit; confirm with the town. Exempt: New detached structures over the IRC threshold require a permit where enforced. |
| West Virginia | Permit required | city | Valuation-based; includes trade permits. | New-structure plan review; varies by city. | Generally allowed | Attached and detached garages require a full building permit and plan review under the WV State Building Code. Exempt: New detached structures over the IRC threshold require a permit. |
| Wyoming | Conditional | city | Valuation-based where enforced; includes trade permits. | New-structure plan review where enforced. | Generally allowed | Attached and detached garages require a full building permit where enforced; confirm with your city/county. Exempt: New detached structures over the IRC threshold require a permit where enforced. |