Concrete in Commerce City, CO

Concrete work in Commerce City splits into two very different review paths the moment it touches the property line. A driveway or patio built entirely on private ground is treated one way by the city; a curb cut, approach, or sidewalk panel in the public right-of-way is reviewed by an entirely different department. Apollo Construction starts every Commerce City concrete estimate by drawing that line first, because it changes who signs off on the work before a single form goes in the ground.

Driveways and Patios Are Exempt From a Building Permit

Commerce City’s own list of work that does not need a building permit names driveways and on-grade patios, including wood patios, directly. A straightforward driveway replacement or a new patio slab poured at grade generally does not require the city’s Building Safety Division to issue a permit before the crew mobilizes.

That exemption has a limit worth repeating: being exempt from a permit does not mean the work is exempt from the building code. The concrete still has to be built to the standard the code would otherwise enforce through inspection, so we do not treat an exempt slab as a lower-quality slab. We just skip the paperwork step the city itself says is unnecessary.

Stairs and Taller Retaining Walls Cross Back Into Permit Territory

Two concrete-adjacent items sit on the opposite list. Commerce City requires a permit for new exterior stairs or stoops and for retaining walls over 4 feet, measured from the top of the wall to the bottom of the footing. A retaining wall of 4 feet or less that is not supporting a surcharge stays exempt, but a taller wall, or a set of concrete steps leading to a raised entry, moves the project onto the permitted side of the ledger.

We measure these elements during the site visit, not after the forms are set, because a retaining wall that creeps past the 4-foot threshold changes both the design review and the footing depth the wall needs to carry its load safely.

Right-of-Way Concrete Goes Through Public Works, Not Building Safety

Once concrete crosses into the public right-of-way, the city’s Public Works Inspections and Permitting group takes over. Public Works issues Right-of-Way Permits, Grading Permits, Street Occupancy Permits, and Capital Investment Permits for work that affects streets, sidewalks, and other public infrastructure, and the department states that a plan set and a plan-and-profile drawing are required before it issues a permit.

A driveway approach, a curb cut, or a sidewalk panel replacement at the street typically falls under this Public Works process even when the private portion of the driveway is exempt from a building permit. We treat the private slab and the street-side connection as two separate approvals and confirm the current scope and drawing requirements with Public Works Permits before pricing the street-side portion of the job.

Footings, Frost Depth, and Excavation Rules

Any concrete element that needs a footing, a stair, a taller retaining wall, or a foundation-adjacent slab, has to be placed below the frost line the city has adopted for its design criteria: 36 inches. The city’s local design criteria also lists a base elevation of 5,160 feet, which is part of why weather protection matters on a Commerce City pour in a way it might not at a lower elevation.

Commerce City’s basic construction rules require any open excavation, including digging for a footing or removing an old base, to be surrounded by a 6-foot fence for the duration of the work. Before digging starts, Colorado law separately requires a locate request through Colorado 811 at least two full business days ahead of any excavation, regardless of how shallow the cut is. We build both requirements into the schedule rather than treating them as something to handle the morning of the pour.

Contractor Licensing on Permitted Concrete Work

When a project crosses into permitted territory, the general permit process the city uses for all residential work applies: apply through eTRAKiT, pay the upfront fees, and pass the city’s Gateway, Plan, and Pre-Issuance review steps before the permit is issued. Contractors apply using the account tied to their license number, and the city has said a lapsed or invalid license will delay issuance, so we confirm every trade’s Commerce City license status before a permitted stair, wall, or right-of-way application goes in.

We do not represent Apollo as holding a specific Commerce City contractor license here; license class and standing are verified against the city’s current requirements for the entity pulling the permit at the time of application.

Curing Through Front Range Weather

Concrete placed in Commerce City has to cure through the same swings the rest of the Front Range sees: a warm afternoon can be followed by a hard overnight freeze, and wind pulls moisture out of a fresh surface faster than a calm day would. We plan the pour date against the forecast, not just the daytime high, and keep blankets, insulation, or enclosure on hand so a fresh slab is not left exposed to an unexpected freeze before it has gained enough strength.

Base preparation gets the same attention. A uniform, compacted, unfrozen base beneath the forms matters as much as the mix itself, and we document the exposed condition before concrete goes in so a soft spot or buried debris is addressed rather than covered.

How We Sequence a Commerce City Concrete Project

We start by identifying which parts of the scope sit on private ground and which touch the right-of-way, since that decides whether Building Safety, Public Works, or both are involved. Exempt driveway and patio work moves straight to scheduling once the base and forms are ready. Stairs, taller retaining walls, and any right-of-way connection go through the applicable permit path first, with footings set to the 36-inch frost depth and excavation protected by the required fencing and a completed Colorado 811 locate. Once approvals and locates are in hand, we prepare the base, place and finish the concrete, and protect it through curing before opening it to traffic.

Common Questions

Does a new driveway in Commerce City need a building permit?
Usually not. The city’s exemption list names driveways and on-grade patios directly, though the work still has to meet the building code even without a permit. A curb cut or approach at the street is reviewed separately by Public Works.

What triggers a permit on a concrete project?
New exterior stairs or stoops and retaining walls over 4 feet both require a permit. A retaining wall of 4 feet or less that is not supporting a surcharge stays exempt.

Who reviews work in the right-of-way, like a driveway approach or sidewalk panel?
Commerce City Public Works Inspections and Permitting handles right-of-way work through Right-of-Way, Grading, Street Occupancy, and Capital Investment permits, and requires a plan set and plan-and-profile before issuing one.

How deep do concrete footings need to go?
The city’s adopted frost line depth is 36 inches, which applies to footed elements like stairs and retaining walls.

Talk to Us About Your Project

Tell us the address, what you want poured or replaced, and whether the work touches the sidewalk, curb, or street. We will sort the scope against Commerce City’s driveway exemption and Public Works right-of-way process, confirm footing and excavation requirements, and request a utility locate through Colorado 811 before any digging begins.