Do I need a permit in Aurora, Missouri?
Aurora, Missouri sits in IECC climate zone 4A with a 30-inch frost depth—meaning deck footings, shed foundations, and fence posts all need to go below 30 inches to avoid frost heave in winter. The City of Aurora Building Department handles all residential permits. Most projects—decks, fences, additions, sheds, electrical work, HVAC replacement—require a permit before work starts. The good news: Aurora allows owner-builders to pull permits for owner-occupied work, so you don't automatically need a licensed contractor's signature. The catch: the building department still expects the work to meet code, and inspections still happen. A quick call to the Building Department before you buy materials or break ground saves money, time, and the headache of being told mid-project to stop and get a permit. Aurora's permit process is straightforward for most jobs—over-the-counter for simple projects, 1–2 weeks for plan review on larger ones. This page walks you through what needs a permit, what doesn't, and how to file in Aurora.
What's specific to Aurora, Missouri permits
Aurora's 30-inch frost depth is critical for any project touching the ground. The IRC requires deck footings to bottom out below the frost line—in Aurora, that's 30 inches minimum. Shed foundations, fence posts, mailbox posts, and gate posts all follow the same rule. This matters because if you go 24 inches deep, frost heave will lift the footing in winter, cracking the post and destabilizing the structure. Plan accordingly: digging in loess soil (which dominates Aurora's area) is workable but dense; karst areas to the south have subsurface cavities that require caution. If you're digging and hit void space, stop and call the Building Department—that's not normal.
Aurora is in Missouri's 2015 IRC adoption cycle (with state amendments). That means the code used for plan review and inspections is the 2015 International Residential Code. Electrical work follows the 2014 National Electrical Code (NEC 2014). If you're replacing a water heater, panel, or running new circuits, the Building Department will expect work to meet NEC 2014 standards—grounding, overcurrent protection, cable routing, all of it. This matters when you're budgeting: a simple 240-volt circuit for a sauna or EV charger will need a licensed electrician and a separate electrical subpermit. The City of Aurora Building Department issues these, but the electrician usually files.
One common friction point in Aurora: property-line and setback documentation. The Building Department requires a survey or a site plan showing your home's location on the lot, distances to property lines, and where the new structure will sit. For a deck or fence, many homeowners skip this and file anyway—then the permit gets flagged for plan review and they lose 1–2 weeks. Spend $50–$150 upfront on a simple site plan or survey annotation; it clears the path. Corner lots are especially important: setback and sight-triangle rules apply, and the Building Department will measure if they doubt the plan.
Aurora allows owner-builders to pull residential permits for work on owner-occupied homes, which is rare privilege in Missouri. This means you can file the permit yourself and do the work yourself—you don't need a licensed contractor to sign off. What you cannot do is hire unlicensed labor; the Building Department expects all electrical, plumbing, and HVAC work to be done by licensed trades (or homeowner-performed HVAC in some cases, with proper permits). If you're doing the framing, roofing, or siding yourself, that's allowed. Mixing owner-builder with licensed trades is fine—just make sure the trades pull their own subpermits.
Permit fees in Aurora are typically scaled to project valuation, with minimums for simple projects. A fence permit might be $50–$100. A deck addition or room addition runs 1–2% of estimated project cost. An HVAC replacement is often a flat $75–$150. Electrical subpermits are similarly modest. Always ask the Building Department for the fee schedule before filing—it saves surprise bills at the counter. Online filing is not yet standard in Aurora; most permits are pulled in person at City Hall or by mail. Call ahead to confirm current hours and any recent changes to the process.
Most common Aurora, Missouri permit projects
These projects come up constantly in Aurora residential work. Some always need permits; others sit in a gray zone where a quick phone call to the Building Department is worth the 60 seconds.
Aurora, Missouri Building Department contact
City of Aurora Building Department
Contact Aurora City Hall; search 'Aurora MO building permit' for current address and location
Search 'Aurora MO building permit phone' or 'Aurora Missouri building inspector' to confirm current number
Typical: Monday–Friday 8 AM–5 PM (verify locally before visiting)
Online permit portal →
Missouri context for Aurora permits
Missouri adopted the 2015 International Residential Code statewide, with state-level amendments. This means Aurora follows the 2015 IRC for structural, electrical, plumbing, and mechanical work—not older or newer editions. The state also enforces the 2014 NEC for electrical, so any new circuits, panel work, or hardwired appliances must meet 2014 NEC standards. Missouri allows owner-builders to pull and obtain permits on owner-occupied homes without a contractor's license, which is a significant benefit; however, some trades—like plumbing and HVAC—may have separate state licensing requirements even for owner-build work, so confirm with the Building Department before assuming you can do the work yourself. Missouri has no statewide solar incentive program, but local jurisdictions can adopt local solar rules; check with Aurora if you're planning solar. Radon is a known issue in Missouri's loess regions; if you're doing foundation or basement work, ventilation and radon-resistant construction techniques are worth discussing with the inspector upfront.
Common questions
Do I need a permit for a deck in Aurora?
Yes, almost always. Any deck attached to the home or over 30 inches high requires a Building Permit in Aurora. Decks under 30 inches high that are detached may qualify as exempt in some cases, but call the Building Department to confirm before building. Remember: Aurora's 30-inch frost depth means all posts and footings must go at least 30 inches deep. If you skimp on depth, frost heave will shift the deck in winter.
What about a shed or small detached building?
Most sheds over 100 square feet require a permit in Aurora. Tiny sheds (under 100 sq ft, no electrical, no foundation) sometimes don't, but again, verify first. If your shed has a concrete pad or posts, those footings still need to respect the 30-inch frost depth. A quick phone call to the Building Department takes 2 minutes and saves a lot of regret.
Do I need a permit to replace my water heater or HVAC system?
Yes, replacement permits are required in Aurora. A water heater replacement is usually a simple over-the-counter permit ($50–$100, plus inspection). HVAC replacement is similar. These are not expensive to permit and are fast—inspectors typically clear them in 1–2 days. Skipping the permit and doing it anyway puts you at risk of a code violation citation and, if you ever sell, the new owner's inspection will catch it.
Can I do electrical work myself in Aurora?
Owner-builders can pull electrical permits for work on owner-occupied homes in Missouri, which means you can file the permit. However, all actual electrical work—wiring, connections, panel changes—must typically be done by a licensed electrician in Aurora. The electrician will file the electrical subpermit and pull the inspection. You can do demolition, framing, and cleanup, but the licensed trade handles the actual electrical work and signs off. Confirm current rules with the Building Department, as these rules can shift.
What happens if I build without a permit?
The Building Department conducts random inspections and also responds to neighbor complaints. If unpermitted work is found, the department will issue a stop-work order and demand either a retroactive permit or removal of the work. Retroactive permits exist but are more expensive and require full inspection and possible remediation. If the work doesn't meet code, you may have to tear it out. This also complicates home sales—inspectors will flag unpermitted work, and lenders may refuse to finance the property. The 10 minutes and $50–$200 to pull a permit upfront is far cheaper than the mess down the road.
How long does a permit review take in Aurora?
Simple projects—fence, shed, water heater, HVAC—are often over-the-counter permits; you get them same-day or next business day. Larger projects like room additions or decks with complex details may go to plan review, which typically takes 1–2 weeks. Call the Building Department with your project scope and they'll give you a realistic timeline. Having a site plan ready (showing property lines and setbacks) speeds up the review.
What's the frost depth in Aurora and why does it matter?
Aurora's frost depth is 30 inches. Any post, footing, or foundation-supporting structure must have its base below 30 inches to avoid frost heave—the upward lift that happens when soil freezes in winter. This applies to decks, sheds, fences, gate posts, mailbox posts, and house foundations. If you only go 24 inches deep, frost heave will crack or destabilize the structure by spring. The 30-inch requirement is non-negotiable in code and is checked during footing inspections.
Do I need a licensed contractor to pull permits in Aurora?
No. Aurora is a Missouri owner-builder jurisdiction, meaning you can pull permits for work on your own owner-occupied home without a contractor's license. However, certain trades—electrical, plumbing, HVAC—often require licensed professionals to do the actual work, even if you pull the permit. Some limited HVAC work may be allowed for owner-builders; confirm with the Building Department. The key is clear on what you can do yourself versus what needs a licensed trade.
How do I file a permit in Aurora?
Aurora does not currently offer online permit filing. You pull permits in person at City Hall or by mail. Call ahead to confirm current hours, the exact address, and whether mail submission is still accepted. Bring your completed permit application (available from the Building Department), site plan showing property lines and setbacks, and project details. For simple projects, you'll likely get the permit same-day. Larger projects will be sent for plan review.
Ready to pull your Aurora permit?
Call the City of Aurora Building Department before you start. Even if you think you know whether a permit is needed, a 90-second call with the inspector will confirm the requirement, the fee, the timeline, and any site-plan or documentation you'll need. Aurora's Building Department is accustomed to homeowners calling first—it saves time for everyone. Have your project scope and property address ready, and ask about the current fee schedule. If you're planning a larger project (addition, major renovation, new structure), ask whether a site plan or survey is required before filing—getting that sorted now prevents delays later.