📋 Quick Facts — Plumbing Permit in Denver
| Detail | Info |
|---|---|
| Permit Required? | Yes — in most cases |
| Permit Type | Plumbing Permit |
| Permit Office | Community Planning and Development (CPD) |
| Phone | (720) 865-2705 |
| Hours | Mon–Fri business hours |
| Online Portal | Apply Online |
| Fee / Timeline | Current Data |
|---|---|
| Plumbing Permit Fee | Water heater: $43 total (quick permit — no plan review). |
| Approval Time | Simple residential: 1–3 days via online portal |
| NEC Edition (CO) | 2023 |
| Permit Authority | Denver and state buildings only. Other jurisdictions have 'home rule' — each cit |
Do I Need a Plumbing Permit in Denver?
The short answer: almost always yes. REQUIRED for any work on a plumbing system beyond simple fixture replacement — and Denver is no exception. The Community Planning and Development (CPD) enforces plumbing permit requirements for residential and commercial work.
✅ Work That Always Requires a Permit
- Water heater replacement (gas or electric)
- New plumbing rough-in (new supply and drain lines)
- Moving existing plumbing supply or drain lines
- Adding new plumbing fixtures (sink, toilet, shower)
- Water service line replacement
- Sewer lateral repair or replacement
- Gas line work (new or modification)
⚠️ Work That May Be Exempt
- Replacing a faucet on an existing supply line (no pipe work)
- Replacing a toilet on existing rough-in (some jurisdictions)
- Clearing a drain clog (maintenance work)
💰 Plumbing Permit Fees in Denver (2026)
Permit fees in Denver are set by Community Planning and Development (CPD). Here's the current fee structure for plumbing work:
| Fee Item | Amount |
|---|---|
| Plumbing Permit | Water heater: $43 total (quick permit — no plan review). |
Source: Denver CPD fee schedule, verified March 23, 2026. Denver uses SAME valuation-based formula for ALL trade permits. Quick permits (water heater, roof, light fixtures) have NO plan review fee. Plan review = 50% of permit fee for projects over $2,000.
* Fees may change. Always verify current rates with Community Planning and Development (CPD) at https://www.denvergov.org/CPD.
🔍 Inspection Requirements
After the permit is issued, Denver requires inspections at key stages. Do not cover work before it's inspected.
- Rough-in Inspection: Inspector checks all supply and drain lines before walls are closed. Pipe material, slope of drain lines (1/4 inch per foot minimum), proper venting, and water test.
- Final Inspection: Verifies all fixtures are installed and functioning, water heater is properly vented and strapped, T&P valve discharge is correct, no leaks.
📝 How to Apply for a Plumbing Permit in Denver
- Verify your contractor is licensed — Licensed plumber (state-specific license) in most states. Some states allow homeowners for owner-occupied single-family homes. Plumber's license required in CA, FL, TX, NY, IL, PA, and most major states..
- Gather required documents — Equipment specs, site plan, load calculations where applicable.
- Submit the application — Online at Community Planning and Development (CPD) or in person.
- Pay the permit fee — Water heater: $43 total (quick permit — no plan review)..
- Post the permit — Keep a copy on-site until all inspections pass.
- Schedule inspections — Do not cover work until the inspector signs off.
📌 Colorado State Requirements
In addition to Denver's local rules, these state-level requirements apply:
- Denver has its own permit system — Denver Community Planning and Development
- Colorado Springs, Fort Collins, Boulder all have own permit offices
- Mountain towns (Aspen, Vail) — very strict, slow permit process, high fees
- Front Range: Class 4 hail-resistant roofing common due to insurance requirements
🚫 Common Plumbing Permit Mistakes in Denver
- Skipping the permit on water heater replacement — most common unlicensed plumbing violation
- Wrong T&P valve discharge pipe material (CPVC not allowed in some jurisdictions — must be copper or galvanized)
- Missing expansion tank on closed systems (required when backflow preventer is present)
- Not strapping water heater in seismic zones
💡 Pro Tips from Contractors
- Water heater permits are usually same-day, over the counter — takes 15 minutes to pull
- In CA: seismic strapping is strictly enforced — both upper and lower straps required, specific heights
- Gas water heaters need B-vent inspection before firing up — confirm with inspector
- In most cities, you can pull the permit online same day — no need to go to the building department
Notes specific to Denver:
- Denver has 'home rule' — own permit office separate from rest of CO
- NEC 2023, IRC 2021 for Denver
- Colorado Springs, Fort Collins, Boulder all have own separate permit offices
- Hail-resistant (Class 4) roofing very common — insurance-driven, not always code-required but commonly installed
Get Your Exact Plumbing Permit Requirements in 5 Seconds
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Run a Free Permit Check →❓ Frequently Asked Questions
Do I need a plumbing permit in Denver, CO?
Yes, in most cases. REQUIRED for any work on a plumbing system beyond simple fixture replacement. In Denver, contact Community Planning and Development (CPD) at https://www.denvergov.org/CPD.
How much does a plumbing permit cost in Denver?
In Denver: Water heater: $43 total (quick permit — no plan review).. Fees may change — always confirm with Community Planning and Development (CPD) before applying.
How long does a plumbing permit take in Denver?
Simple residential: 1–3 days via online portal. Simple residential trade work is often issued same-day or within 1–3 business days.
Who can pull a plumbing permit in Colorado?
Licensed plumber (state-specific license) in most states. Some states allow homeowners for owner-occupied single-family homes. Plumber's license required in CA, FL, TX, NY, IL, PA, and most major states.