If you are planning a commercial tenant improvement in the Denver metro, the permit timeline is often the single biggest variable in your schedule. Plan review in the City and County of Denver can run 6 to 10 weeks before anyone at the building department even looks at your drawings. Aurora can turn around a TI in 2 to 3 weeks. Knowing which jurisdiction you are dealing with before you sign a lease is how you avoid paying rent on an empty space for two extra months.
Why Permit Timelines Vary So Much Across the Denver Metro
Every city, county, and special district in Colorado runs its own building department. They have different staffing levels, different submittal portals, different plan review queues, and different tolerance for complexity. Two identical TI projects filed on the same day in two different jurisdictions can come out of review months apart.
Most tenants do not realize this until they are already on the hook for a lease. By then the clock is running and there is nothing you can do about which jurisdiction you are in.
How Long Does Denver Take to Review a Commercial TI Permit?
The City and County of Denver is the slowest major jurisdiction on the Front Range right now. We have active projects where Denver told us they would not even begin reviewing the application until roughly 6 weeks after submittal. That is before any corrections, before any back-and-forth. Once review starts, expect at least one round of comments, which adds another 2 to 4 weeks.
Realistic Denver commercial TI permit timeline in 2026: 8 to 12 weeks from submittal to approved permit. That is a best-guess range for a standard TI with no structural or life-safety complications. Restaurants, medical offices, and anything with assembly occupancy can run longer.
On one Denver restaurant project we are running right now, the client signed the lease assuming a 4-week permit. Denver's first-available review date pushed that to 10 weeks. Ten weeks of rent with no revenue is a six-figure hit on a restaurant.
If you are opening a business in Denver proper, build that timeline into your lease negotiations. We walk tenants through this during the commercial TI process before they sign anything.
Which Denver Metro Jurisdictions Are Fast?
Not every city is slow. Based on projects we have permitted in the last 12 months, here is how the major Denver metro jurisdictions stack up for standard commercial TIs.
- Aurora: Fast on TIs, often 2 to 3 weeks for plan review. Slower on new construction. Good portal, responsive reviewers.
- Lakewood: Generally 3 to 5 weeks. Clear comment cycles and reviewers who pick up the phone.
- Sheridan: Small department, but they move quickly on straightforward TIs. Relationships with the chief and city planner help.
- Arapahoe County: Roughly 2 months regardless of project type. Not fast, but predictable.
- City and County of Denver: 6 to 10 weeks before first review, 8 to 12 weeks total. The slowest in the metro right now.
- Jefferson County: 3 to 6 weeks, depends heavily on reviewer load.
These are averages from actual projects. Your mileage will vary based on the complexity of the scope and how clean your submittal package is.
What Actually Slows a Permit Down?
Jurisdiction is the biggest factor, but there are five others we see cause delays on almost every project.
Incomplete drawings. If the architect's set is missing details, code references, or accessibility calculations, the reviewer kicks it back. Every round of corrections adds 1 to 3 weeks depending on the jurisdiction.
Over-complicated scope. The more disciplines involved (structural, mechanical, plumbing, electrical, fire sprinkler, health department), the more reviewers touch the file. Each reviewer has their own queue.
Landlord coordination issues. If the base building drawings the architect needs are outdated or missing, your team wastes weeks chasing the landlord for as-built information before they can even finish the permit set.
Health department review. Restaurants and medical offices trigger a separate review by Tri-County Health or the Denver Department of Public Health. This runs in parallel with building review but adds its own corrections.
Life safety and fire sprinkler. Any work that touches sprinkler heads, egress, or occupancy classification requires fire marshal sign-off. Fire marshals are often the slowest step in the whole review chain.
How to Cut Weeks Off Your Permit Timeline
You cannot change which jurisdiction you are in, but you can change everything else. Here is what we do on every project to keep the permit moving.
Pre-submittal meetings. Most jurisdictions will meet with you before you file to flag issues in the drawings. A 30-minute meeting with a Denver plan reviewer can save 6 weeks of corrections later. We push for one on every complex project.
Complete the submittal before filing. It is tempting to file early with a partial set just to get in the queue. In Denver, an incomplete submittal gets rejected and goes back to the end of the line. Wait until the set is actually ready.
Use design-build when speed matters. When the contractor is involved during design, we catch code issues and coordination gaps before they hit the reviewer's desk. Design-build is faster than traditional bid largely because of cleaner permit submittals.
If you are working through a lease negotiation right now and the landlord is pushing a tight buildout deadline, here is how we approach the TI permit strategy. We can often spot schedule risks before you sign.
How Permit Timelines Affect Your Budget
Every week of permit delay is a week of rent you pay with no revenue coming in. On a 3,000 SF restaurant paying $30 per SF per year, that is roughly $1,700 per week. A 6-week permit delay costs over $10,000 before you have even poured a slab.
For higher-value spaces or larger footprints, the number gets ugly fast. This is why permit timeline planning matters as much as the construction cost itself. A cheaper build that opens two months late is not actually cheaper.
The Bottom Line on Denver Commercial Permits
Permit timelines in the Denver metro range from 2 weeks in a friendly jurisdiction to 12+ weeks in Denver proper. The difference is not random. It is driven by where you are filing, how clean your submittal is, and how complex your scope is.
Know your jurisdiction before you sign a lease. Budget the real permit timeline into your schedule. Use a GC who files these regularly and has relationships with the building departments you care about. That combination is how you avoid the expensive surprises most tenants only learn about on their second project.
Questions about a specific jurisdiction or project? Start a conversation or call 833-SNYDER-9 (833-769-3379). We pull permits across the Front Range every month and we will give you a straight answer on what to expect.
Next read: What to Expect During a Commercial Tenant Improvement