Do I Need a Permit for a Bathroom Remodel in Aurora, CO?
Aurora's answer depends entirely on what you're changing: a cosmetic refresh that leaves the walls and pipes in place needs no permit, but the moment you move a drain, add a circuit, or open a wall, the Aurora Building Division wants to see plans. In a city where aging ranch homes from the 1970s and 1980s are being gutted and upgraded at a rapid pace, contractors and inspectors alike know the difference—and so should you.
Aurora bathroom remodel permit rules — the basics
The Aurora Building Division administers bathroom remodel permits through the Permit Center at 15151 E. Alameda Parkway, Suite 2400, Aurora CO 80012. Bathroom remodel permits are typically "combination permits" that bundle plumbing, electrical, and building scopes into a single permit application rather than requiring separate permit applications for each trade. This combination-permit approach streamlines the process for homeowners and contractors—one application, one fee calculation, one permit to post on-site—but it also means the application must include scope descriptions for all trades involved. You can apply online at Aurora4Biz.org, in person at the permit counter, or by email to permitcounter@auroragov.org. The general permit inquiry line is 303.739.7420.
Aurora has adopted the 2021 International Residential Code, the 2021 International Plumbing Code, and the 2023 National Electrical Code with local amendments. For bathroom remodels, the most frequently cited code sections relate to: minimum bathroom ventilation (an exhaust fan rated for the bathroom's square footage, venting to the exterior, not into the attic or wall cavity); ground-fault circuit interrupter (GFCI) protection for all outlets within 6 feet of a water source; minimum clearances around toilet fixtures (15 inches from centerline to any wall or obstruction); and water-supply line sizing for added fixtures. All of these are verifiable items that Aurora inspectors check during the rough-in and final inspections.
Permit fees for bathroom remodels are calculated based on the project valuation (the estimated cost of materials and labor). A modest bathroom refresh—new tile, new fixtures in existing locations, new vanity—may be valued at $5,000–$8,000, generating permit fees of approximately $100–$145 including plan review. A full gut renovation with relocated plumbing, new electrical panel circuits, new walls, and premium fixtures can be valued at $25,000–$45,000, generating permit fees of $350–$550. These fees include both the permit fee and the plan review fee (approximately 65% of the permit fee). Permit fees are paid at the time of permit issuance, not at application.
Plan review for residential bathroom remodels in Aurora typically takes 7–10 business days from the date of a complete submittal. The application must include a description of all work to be performed, the project valuation, and either a simple sketch (for straightforward in-place remodels) or detailed drawings showing new wall locations, fixture rough-in dimensions, and electrical circuit plans (for more complex remodels with relocated plumbing or new walls). Once the permit is issued, work begins and inspectors are called at two key milestones: the rough-in inspection (when all plumbing, electrical, and framing work is visible but walls are not yet closed) and the final inspection (when all finish work is complete).
Why the same bathroom remodel in three Aurora homes gets three different permit requirements
The bathroom remodel permit decision in Aurora hinges on the specific scope of work, the age of the home, and sometimes the home's location in Aurora's multi-county geography. Two homeowners describing their projects as "full bathroom remodels" to their contractors can end up with dramatically different permit requirements—and permit costs—based on details that seem minor but matter a great deal to the Aurora Building Division.
| Scope of work | Permit required in Aurora? |
|---|---|
| Replace toilet, same location | No permit required if the rough-in location is unchanged and supply/drain connections are not modified beyond replacing the fixture. |
| Relocate toilet (new drain rough-in) | Yes — plumbing permit required; rough-in inspection required before floor is closed. |
| Replace vanity top, sink in same location | No permit required if only the fixture and supply connections are replaced in kind without relocating pipes. |
| Add new vanity where none existed | Yes — plumbing permit required for new supply and drain connections. |
| Retile floor and walls | No permit required for tile replacement alone, provided no structural work is involved and no plumbing or electrical changes are made. |
| Add GFCI outlet | Yes — electrical permit required to add any new outlet, even a GFCI replacement on a non-GFCI circuit. |
| Replace exhaust fan on existing circuit | Generally no permit required for like-for-like replacement; permit required if adding new ducting or extending an existing circuit. |
| Convert half-bath to full bath | Yes — combination permit required for plumbing, electrical, and building work; multiple inspections required. |
Aurora's aging housing stock — the hidden permit driver in older neighborhoods
Aurora grew explosively from the 1960s through the 1990s, and a large portion of the city's housing stock was built during that era. The central Aurora neighborhoods east of I-225 are filled with ranch homes and tri-levels built between 1960 and 1985—homes that now require careful renovation management because the systems inside them reflect the building codes and material standards of their era, not today's. This matters for bathroom remodels because opening walls in these homes exposes plumbing and electrical conditions that code inspectors must evaluate against current standards, even when the scope of the permitted work would not normally require those evaluations.
The most common issue is galvanized steel water supply pipe. Installed throughout Aurora's older neighborhoods before copper and PEX became standard, galvanized pipe has a service life of approximately 40–70 years. A 1970s-era Aurora home with original galvanized supply pipes is at or past that service life, and the pipes are often visibly corroded when exposed during demolition. While Aurora's inspectors cannot require you to repipe an entire house based solely on a bathroom permit, they can—and do—require that any newly exposed, visibly failing galvanized supply lines serving the permitted scope of work be replaced with approved materials. The cost surprise can be meaningful: a homeowner who budgeted $500 for supply-line connections may end up spending $1,500–$3,500 to replace galvanized runs back to the main shutoff.
Similarly, older Aurora homes may have aluminum branch circuit wiring, original Federal Pacific or Zinsco electrical panels, or inadequate circuit capacity for a remodeled bathroom. These are not items Aurora's building inspectors seek out proactively, but they become visible when work opens walls and exposes existing wiring conditions. An electrician working under a bathroom electrical permit is required to bring the work within the permitted scope into compliance with the 2023 NEC—which may include upgrading aluminum wiring connections with approved devices, adding arc-fault circuit interrupter (AFCI) protection where not previously required, or identifying panel capacity issues that prevent adding bathroom circuits. Budget for infrastructure surprises of $500–$3,000 in any Aurora home built before 1985.
What the inspector checks in Aurora
Aurora residential bathroom remodels with combination permits typically require two scheduled inspections: a rough-in inspection and a final inspection. The rough-in inspection is the critical one—it happens after all plumbing, electrical, and framing work is complete but before any walls are closed or tile is set. At the rough-in, the Aurora inspector checks that drain pipes are correctly sloped (minimum 1/4-inch per foot for horizontal runs), that supply-line connections use approved materials and fittings, that all new or modified electrical circuits are correctly gauged and protected, that GFCI protection is properly installed, that the shower pan liner or waterproof membrane is in place before tile backer is installed, and that the exhaust fan ducting is routed to the exterior (not into the attic or wall cavity). Failing the rough-in inspection requires corrections and a re-inspection before any wall covering can proceed—which is why experienced Aurora contractors schedule the rough-in inspection as soon as the scope is complete, rather than waiting until they are ready to set tile.
The final inspection checks all visible finish work: the shower enclosure for watertight installation, the toilet for secure floor attachment and proper wax ring seal, GFCI outlet operation (tested in the inspector's presence using a plug-in GFCI tester), exhaust fan operation, lighting fixture installation, and proper sealing around any penetrations through the vapor barrier. Aurora inspectors also verify that the bathroom door clearance is adequate and that the door swing does not violate the 2021 IRC's minimum clear floor space requirements near fixtures—a common problem when homeowners widen a shower and the toilet position crowds the door swing. Minor deficiencies found at the final inspection result in a correction notice; the homeowner or contractor must address them and request a re-inspection, which typically happens within 2–3 business days of the correction request.
What a bathroom remodel costs in Aurora
Aurora's bathroom remodel market reflects strong demand from a growing, diverse homeowner population that is upgrading the older housing stock throughout the city. For a main bathroom remodel in a 1970s–1990s Aurora home, contractor bids typically run $8,000–$18,000 for a mid-range refresh (new fixtures in existing locations, new tile, new vanity) to $20,000–$40,000 for a full gut renovation with relocated plumbing and high-end finishes. Master bathroom remodels in newer Aurora homes—larger rooms, walk-in showers, double vanities—range from $18,000 to $55,000 depending on material quality and scope. Half-bath-to-full-bath conversions typically run $12,000–$28,000 because of the combination of structural, plumbing, and electrical work involved.
The Aurora market has seen strong price pressure on contractor labor since 2022, and bathroom remodel contractors in the metro area are typically booked 4–8 weeks out for project start dates. Factor in the 7–10 business-day permit review time and the 13–25 days average construction time for a full bathroom install, and homeowners planning a bathroom remodel in Aurora should expect a total timeline from permit application to project completion of 6–12 weeks. Rushing the process by starting work before permit issuance—sometimes called "pulling the permit after the fact"—carries significant financial and legal risk in Aurora (see the next section).
What happens if you skip the permit in Aurora
The most common way Aurora homeowners get caught skipping a bathroom remodel permit is during a real estate transaction. When a home in Aurora goes on the market, the seller's disclosure requirements under Colorado state law (C.R.S. §38-35.7-102) require disclosure of known defects and known code violations. A bathroom remodel done without a permit is a known code violation. When buyers' inspectors see a visibly new bathroom in an older home and there is no permit on file in Aurora's public permit database—which is searchable online—they flag it. The buyer's lender may then require that the work be legalized before the loan closes, or the buyer may negotiate a price reduction to account for the cost and hassle of legalization.
Aurora's code enforcement staff also investigates complaints about unpermitted work. When work is discovered without a permit, the homeowner faces an investigation fee that effectively doubles the permit cost, plus the cost of any corrections needed to bring the work into compliance. In a bathroom, "corrections" can be significant: if an inspector cannot verify that the shower pan liner was installed correctly because the tile has already been set, the inspector may require destructive examination—meaning the tile must come out to expose the liner for inspection. The cost of tile removal, re-inspection, and re-installation can easily run $3,000–$8,000 for a tiled shower, compared to the $0 it would have cost to schedule the rough-in inspection before setting tile.
Beyond the financial consequences, there are safety reasons the permit process exists for bathroom remodels. Incorrectly plumbed drain lines without adequate slope develop chronic clog and sewer-gas problems that can permeate a home for years before the source is identified. GFCI protection failures in bathrooms—where water and electricity exist in close proximity—create genuine electrocution risks. Exhaust fans ducted into attics rather than to the exterior create moisture accumulation that leads to mold growth in the attic insulation and roof sheathing. These are the risks that Aurora's inspections are designed to catch, and they are real outcomes that happen in real Aurora homes where bathroom remodels were done without permits and without the oversight of a code inspection.
Aurora, CO 80012
Phone: 303.739.7420
Email: permitcounter@auroragov.org
Online portal: auroragov.org/business_services/building_division
Hours: Monday–Friday, 8:00 a.m. – 5:00 p.m. (call to confirm holiday hours)
Common questions about bathroom remodel permits in Aurora, CO
Do I need a permit to replace a toilet in Aurora?
If you are replacing the toilet in the same location with the same rough-in distance (typically 12 inches from the finished wall to the center of the drain), and you are not modifying any supply or drain connections beyond the fixture connection itself, a permit is generally not required. However, if you are changing the rough-in distance, relocating the toilet drain, or doing other plumbing work in the same bathroom as part of the same project, a plumbing permit would cover the toilet work along with the other scope. When in doubt, call Aurora's Permit Center at 303.739.7420—a permit technician can confirm in a few minutes whether your specific project requires a permit.
Can I do my own plumbing and electrical in a bathroom remodel in Aurora?
Aurora allows homeowners to obtain permits and perform their own plumbing and electrical work in their owner-occupied residences under the homeowner exemption from contractor licensing requirements. You are not required to hire a licensed plumber or electrician if you are the owner-occupant performing the work on your own primary residence. However, the work must still meet all applicable code requirements, and all required inspections must be passed. The rough-in inspection is particularly important: an Aurora inspector will evaluate your DIY plumbing and electrical work against the same code standards that licensed contractor work is held to. Homeowners who are not experienced with plumbing or electrical should carefully consider whether the money saved on contractor labor is worth the risk of failed inspections and required corrections.
How long does a bathroom remodel permit take in Aurora?
The Aurora Building Division's standard plan review timeline for residential bathroom remodel permits is 7–10 business days from the date of a complete application submittal through Aurora4Biz.org or in person at the permit counter. For straightforward in-place remodels with no structural changes, the review may be faster. For complex remodels with relocated plumbing, new walls, or combination permits covering multiple trades, the review can take up to 15 business days. Once the permit is issued, inspections are scheduled on demand through the Aurora4Biz.org portal or by calling 303.739.7420; inspectors typically arrive within 1–3 business days of the inspection request.
Do I need a permit if I'm just replacing the tile in my bathroom?
Generally no, if you are only replacing tile on the floor or walls without moving any plumbing, opening any walls, or making any electrical changes. Tile replacement is considered cosmetic work that does not require a permit in Aurora as long as the underlying structure and systems remain in place and unmodified. The key exception is if you are retiling a shower enclosure and the project requires replacing the shower pan liner or waterproof membrane underneath the tile—this work should be inspected before new tile is set, and a permit is recommended even if not strictly required, because a failed shower pan liner is a major moisture source that can cause extensive hidden damage.
What is a rough-in inspection and when does it happen?
A rough-in inspection in Aurora is the inspection that takes place after all plumbing, electrical, and framing work is complete but before any walls are closed, tile is set, or finish materials are installed. It is the most important inspection in a bathroom remodel because it verifies that all the work hidden behind the walls—drain slopes, supply-line connections, electrical circuits, exhaust-fan ducting, shower pan liner—meets code requirements before it becomes inaccessible. You schedule the rough-in inspection through Aurora4Biz.org or by calling 303.739.7420, and an inspector arrives within 1–3 business days. Do not close walls, set tile, or install finish materials until the rough-in inspection has been passed and the inspector has signed off on the permit card.
Does a bathroom remodel require an architect or engineer in Aurora?
For most residential bathroom remodels—even complex ones—an architect or structural engineer is not required. Simple sketches or diagrams showing the scope of work, fixture locations, and (for combination permits) the basic electrical and plumbing layout are sufficient for plan review. Engineer-stamped drawings are required when the remodel involves structural changes to load-bearing walls, when the project requires a header or beam calculation for an expanded opening, or when there is a question about the structural capacity of the floor framing to support new heavy fixtures like a cast-iron soaking tub. If you are uncertain whether your project scope requires engineering, describe the scope to an Aurora Building Division permit technician at 303.739.7420; they can tell you whether stamped drawings are required before you incur engineering costs.