Tile Installation in Commerce City, CO

A tile job in Commerce City can be as simple as an exempt floor swap or as involved as a full bathroom permit, and the difference usually comes down to what happens to the plumbing underneath it, not the tile itself. Apollo Construction reads that difference before setting a layout, because a shower that changes its drain or valve moves the whole room onto a different review path than a straight floor replacement.

A Straight Floor Tile Swap Is Generally Exempt

Commerce City lists installation and replacement of floor finishes among the work that does not require a building permit. A kitchen, entry, or laundry floor that gets new tile with no change to the subfloor structure, plumbing, or electrical beneath it typically falls on the exempt side of that line, though the work still has to meet the building code even without a permit filed.

Shower and Tub Tile Usually Rides With a Fixture Permit

Once a project changes a shower pan, drain location, or valve, it crosses into new plumbing fixtures, which is on the city’s permit-required list. A retiled shower that keeps the exact same pan, drain, and valve in place is a different scope than one that reconfigures the shower footprint, and we confirm which situation applies before pricing so the permit decision is made early rather than discovered mid-demolition.

When a fixture change is involved, the tile work follows the same Residential Alteration (RALT) permit, eTRAKiT filing, and plan-review timeframes, roughly 14 days for an initial review and 7 more for a resubmittal, that govern the rest of a bathroom remodel.

Shower Clearances the City Has Published, Even Though the Guide Targets Basements

Commerce City’s Typical Basement Finish Details guide sets specific shower figures: a minimum 900 square inches of shower area with a 30-inch minimum dimension, or a 25-inch minimum dimension allowed where the cross-sectional area reaches 1,300 square inches. Hinged shower doors have to open outward, all glass enclosing a shower must be safety glazed, and shower valves must be scald-resistant under ASSE/ANSI 1016 with a 120°F hot-water limit. The guide also requires cement or fiber-cement backer board on tub and shower partitions, finished with a non-absorbent surface.

That guide states it applies to basement finishes specifically. For a shower tiled elsewhere in the house, these figures reflect the same adopted 2021 IRC provisions, but we confirm the specific room’s requirements with the city rather than assuming the basement guide’s numbers transfer automatically to a main-floor bathroom.

No Published City-Specific Waterproofing Test, So the Manufacturer’s System Governs

We did not find a Commerce City page that states its own shower water-test requirement separate from a manufacturer’s or ANSI’s system instructions. In that gap, we follow the waterproofing manufacturer’s written procedure for the specific membrane and drain assembly being installed, keep the components of that system together rather than mixing unrelated products, and document the water test before tile ever goes over the pan.

Expansive Soil Shapes the Tile Detailing, Not Just the Framing

Commerce City’s basement guide requires floating connections at the top of partitions surrounding shower compartments, a detail written specifically to accommodate expansive-soil slab heave. A rigid tile floor over a slab that is moving will crack regardless of how carefully the tile was set, so we evaluate the visible slab condition, existing cracks, and any prior repair before choosing whether a movement-accommodation detail belongs in the assembly. A Commerce City page addressing tile-specific crack-isolation or uncoupling membranes was not located, so that product selection follows manufacturer guidance for the observed condition rather than a city-stated rule.

Licensed Trades on a Fixture-Triggered Tile Project

When a shower or tub tile job includes new plumbing fixtures, the plumbing portion needs a properly licensed contractor applying through their own eTRAKiT account, separate from the tile installation itself. We coordinate the plumbing rough-in, its inspection, and the tile schedule so the waterproofing and tile work do not start until the plumbing behind it has reached its approved stage.

How We Sequence a Commerce City Tile Project

We start by identifying whether the shower, tub, or floor plumbing is changing, since that decides whether the project needs a permit at all. An exempt floor swap moves straight to substrate preparation and layout. A fixture-triggered bathroom scope goes through the RALT permit and plumbing rough-in and inspection first. Either way, we assess the substrate and any slab movement, install the waterproofing system to the manufacturer’s instructions with a documented water test in a shower, and set the tile to Commerce City’s published clearance figures before grout and sealant close out the room.

Common Questions

Do I need a permit to retile a kitchen or bathroom floor?
Generally not, if the subfloor, plumbing, and electrical underneath stay the same. Installation and replacement of floor finishes is on Commerce City’s exempt list, though the work still has to meet the building code.

What changes if I’m retiling a shower?
If the shower pan, drain, or valve is changing, that is a new plumbing fixture, which requires a permit and follows the same Residential Alteration process as the rest of a bathroom remodel.

What size does a tiled shower have to be?
The city’s basement finish guide sets a minimum 900 square inches with a 30-inch minimum dimension, or 25 inches where the cross-sectional area reaches 1,300 square inches; it states it applies to basements, so we confirm the figure for other rooms with the city.

How is a tile floor protected from cracking over Commerce City’s soil?
We evaluate the existing slab for movement and prior cracking and select isolation or uncoupling details based on the manufacturer’s system and the observed condition, since no citywide tile crack-isolation rule was found on an official page.

Talk to Us About Your Project

Tell us the room, whether any fixtures are moving, and what condition the existing floor or shower is in. We will confirm whether the scope stays exempt or needs a fixture permit, plan the waterproofing system for a shower, and set the tile layout around Commerce City’s published clearance figures.