Here is the honest answer up front. Most new decks, full rebuilds, and structural changes require a building permit in Denver metro cities, and the process usually follows the same arc everywhere: submit drawings, get approval, pass a footing inspection early, and pass a final inspection at the end. The exact rules, forms, and thresholds differ from city to city, Aurora is not Lakewood is not Castle Rock, so the only authoritative source for your project is your own building department. What we can give you, after handling this process on rebuild projects across the metro, is a clear picture of how it typically goes and why it is worth doing right.
When a permit is typically required
Every jurisdiction writes its own rules, but the pattern across the Denver metro is consistent enough to plan around.
- New deck builds: almost always permitted. A new attached or elevated deck is a structure, and cities treat it as one.
- Full rebuilds: if the framing is coming out, expect the project to be treated like a new build. This is the situation we deal with most, since many of our projects start as decks too far gone to save.
- Structural changes: enlarging the footprint, changing the height, moving stairs, or altering how the deck attaches to the house typically triggers a permit even if much of the deck stays.
- Height and attachment: many cities draw lines based on deck height above grade and whether it attaches to the house. Low, freestanding platforms are sometimes exempt, but thresholds vary, so verify rather than assume.
- Like-for-like repairs: replacing worn boards with the same materials in the same layout often does not require a permit. Once repairs touch the structure, that can change. When in doubt, a five-minute call to the building department settles it.
One more honest note: rules also change over time. Whatever a neighbor did five years ago is not evidence of what your city requires today.
The typical process, step by step
Here is the shape of a permitted deck project in most metro jurisdictions.
- Drawings and documents. You submit a site plan showing where the deck sits on the property, plus construction drawings covering the framing: footing locations, beam and joist layout, ledger attachment detail, stair geometry, and railing design. Some cities offer handout templates for straightforward decks.
- Submittal and review. The application goes to the building department, often online now, and a plan reviewer checks the drawings against current code. Questions and correction requests are normal, not a red flag.
- Permit issued, work begins. Construction starts with the permit on site, and the work is expected to match the approved drawings. Changes along the way should go back through the reviewer.
- Footing inspection. This is the early hold point. The inspector looks at the excavated footing holes before concrete is poured. Frost depth matters in Colorado, footings must sit below the freeze line so freeze-thaw cannot heave the deck, and the inspector wants to see that before it disappears under concrete. Pour first and you may be digging it back out.
- Possible mid-project inspections. Depending on the city and the project, there may be a framing inspection or an electrical inspection if line-voltage work is part of the job.
- Final inspection. When the deck is complete, the inspector walks the finished structure: connections, stairs, railings, and conformance to the approved plans. Pass, and the permit closes out, the paper trail that protects you at resale time.
The two things inspectors care about most
Ask anyone who has been through a few of these and the same two details come up, because they are where decks actually fail.
The ledger attachment
The ledger is the board that ties an attached deck to the house, and it carries an enormous share of the load. When you read about a deck collapse, the ledger is usually the culprit: nailed instead of properly bolted, fastened through siding into nothing solid, or rotted because flashing was skipped. Inspectors look hard at how the ledger is fastened, what it is fastened to, and how it is flashed to keep water out. That scrutiny is the system working. It is the single most important connection on the deck.
Railings and stairs
The other focus is fall protection. Codes based on the International Residential Code set expectations for when a deck needs a guardrail, how tall it must be, and how tightly spaced the infill must be so a small child cannot slip through. Stairs get the same attention: consistent risers, adequate tread depth, a graspable handrail. We are deliberately not quoting numbers here, because requirements come in versions and local amendments, and your city’s current adopted code is the one that counts. The principle is universal: railings and stairs are where people get hurt, so that is where inspectors slow down.
Why the permit is worth it
It is fair to ask what you get for the paperwork. Real answers: an independent set of trained eyes on the structure your family stands on. A closed permit that keeps a home sale from stalling when the buyer’s inspector asks about the deck. Insurance standing, since unpermitted structures can complicate claims. And leverage against shortcuts, because a contractor who knows an inspector is coming builds differently. A contractor who suggests skipping the permit on a full rebuild is telling you something about the rest of their work.
How Golden Stain handles it on rebuilds
On our deck rebuild projects, we handle the permit process as part of the job: preparing what the city needs, building to the approved plans, scheduling the footing and final inspections, and walking the inspector through the work. One owner-led crew, one point of contact, no season of phone tag with the permit counter. We are licensed and insured, and we build expecting inspection, which is how it should be done whether an inspector is coming or not.
Frequently asked questions
Do I need a permit just to replace my deck boards?
Usually not, if it is a true like-for-like surface replacement on a sound frame. The moment the project touches structure, the ledger, joists, beams, posts, or footings, a permit likely comes into play. Rules differ by city, so confirm with your local building department before starting.
What happens if I build a deck without a permit?
Cities can require you to stop work, apply retroactively, open up finished construction for inspection, or in bad cases remove non-compliant work. The more common pain arrives at resale, when an unpermitted deck surfaces in disclosures and becomes your problem on a deadline. Permitting during the build is the cheaper path in every way.
How long does the permit process take?
It varies with the city, the season, and how complete your submittal is. A clean application for a straightforward deck moves much faster than one that bounces back for corrections. Spring and summer are the busy season for permit counters across the metro, so build review time into your schedule.
Will the inspector come more than once?
Typically yes, at least twice. The footing inspection happens early, before concrete is poured, and the final inspection happens when the deck is done. Some cities and some projects add a framing or electrical inspection in between. Your permit paperwork will list exactly which inspections your project needs.
Get your free estimate
If your deck is due for a rebuild, let us look at it and give you the straight story, structure, scope, and what the permit process will involve in your city. Golden Stain serves the Denver metro and greater Austin with one owner-led crew, licensed and insured, 4.9 stars across 120+ Google reviews. Free on-site estimate. No pressure, no obligation, ever. Call 720-233-5487 today.
Explore more
Ready for the real thing? Browse all our services, the areas we serve across Colorado and Austin, and our home-care journal, then call 720-233-5487 for a free estimate.
