| Project | Permit Needed? |
|---|---|
| Addition – Residential | Yes |
| Addition – Commercial | Yes |
| Apartment, Condo, Triplex+ (New) | Yes |
| Basement Finish | Yes |
| Core and Shell | Yes |
| Drywall | Yes |
| Footing/Foundation – Residential | Yes |
| Footing/Foundation – Commercial | Yes |
| Insulation | Yes |
| Mobile Home (New) | Yes |
| New Commercial Building (tenant known) | Yes |
| Remodel (Interior) – Residential | Yes |
| Single Family Detached House (New) | Yes |
| Studio | Yes |
| Sunroom | Yes |
| Tenant Finish/Minor Commercial Work | Yes |
| Townhome, Duplex (New) | Yes |
Understanding permit requirements
Common projects
Most projects require a permit. Some do not. For some projects, it depends on where they are. For example, sidewalk repair, driveway repair, and dumpsters in the street need a call to Public Works first. Retaining walls and playset equipment may need a call to the Planning Department first.
Not sure about your project? Call Building Safety at (303) 335-4584 or email us.
| If you're doing this... | You need a... |
| Adding a deck, fence, or shed | Permit |
| Replacing your A/C, furnace, or water heater | Permit |
| Re-roofing or re-siding | Permit |
| Finishing your basement | Permit |
| Adding a room or addition | Permit |
| Putting in a pool or hot tub | Permit |
| Painting the outside of your house | No permit needed |
| Pouring an uncovered concrete patio | No permit needed |
| Replacing a window with the same size window | No permit needed |
| Landscaping | No permit needed |
Find your project
Additions, Remodels & New Buildings
Decks, Patios & Outdoor Structures
| Project | Permit Needed? |
|---|---|
| Accessory Structure | Yes |
| Carport | Yes |
| Concrete Patio – Uncovered | No |
| Deck (Covered/Uncovered) | Yes |
| Garage – Detached | Yes |
| Pergola | Yes |
| Playset Equipment | Possibly — contact Planning Department |
| Porch or Covered Patio | Yes |
| Retaining Wall | Possibly — contact Planning Department |
| Shed | Yes |
| Project | Permit Needed? |
|---|---|
| Demolition – Residential | Yes |
| Demolition – Commercial | Yes |
| Project | Permit Needed? |
|---|---|
| Door – Size Change or New Opening | Yes |
| Painting – Exterior House | No |
| Re-Roof | Yes |
| Re-Siding | Yes |
| Window Replacement – Like for Like | No |
| Window Replacement – Size Change/New Opening | Yes |
Electrical, Plumbing & Mechanical
| Project | Permit Needed? |
|---|---|
| Air Conditioner | Yes |
| Electrical Work (standalone) | Yes |
| Fireplace | Yes |
| Furnace/Boiler | Yes |
| Gas Line (New/Repair) | Yes |
| Hot Tub | Yes |
| Irrigation System | Yes |
| Mechanical Work (standalone) | Yes |
| Plumbing Work (standalone) | Yes |
| Roof Top Unit | Yes |
| Solar PV System | Yes |
| Swamp Cooler | Yes |
| Water Heater | Yes |
| Project | Permit Needed? |
|---|---|
| Elevator (New/Remodel) | Contact CO Division of Oil & Public Safety |
Fences, Foundation, and Driveway/Sidewalks
| Project | Permit Needed? |
|---|---|
| Fence | Yes |
| Foundation Repair | Yes |
| Driveway Repair | Possibly — contact Public Works |
| Sidewalk Repair | Possibly — contact Public Works |
| Project | Permit Needed? |
|---|---|
| Pool – Above Ground | Yes |
| Pool – Underground | Yes |
| Project | Permit Needed? |
|---|---|
| Sewer & Water Repair (private property) | Yes |
| Sewer & Water Repair (street/right-of-way) | Contact Public Works |
| Telecommunication | Yes |
| Project | Permit Needed? |
|---|---|
| Construction Trailer | Yes |
| Dumpster/Roll Off (private property) | Yes |
| Dumpster/Roll Off (street/right-of-way) | Contact Public Works |
| Food Truck | Yes |
| Seasonal Sales | Yes |
| Sign – Permanent | Yes |
| Sign – Temporary | Yes |
| Special Events | Yes |
Building Guides
The Building Department has created the following guides to help you understand what criteria is required when submitting for a building permit.
These guides are for residential properties only.