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When a permit is required
Permit triggers and exempt work for Castle Rock
Building permit applications are required for residential and commercial work handled by the Building Division; examples include additions, decks, reroofing, AC, furnaces, water heaters, remodels, and commercial projects.
Note: No comprehensive Castle Rock exempt-work list was located on the main public Building pages reviewed. Minor permit categories without plan review are specifically noted for reroofing, residential AC, residential furnace, residential water softener, and residential water heater, but a permit is still required.
- Permit application
- PDF plans where applicable
- Manufacturer specifications and gas load calculations for certain equipment
- Contractor registration materials
- Homeowner affidavit for owner-builders
- Fire or erosion or stormwater materials depending on project
- Building code
- 2018 IBC, 2018 IRC, 2018 IPC, 2018 IEBC, 2018 ISPSC, 2009 ANSI A117.1, 1997 Uniform Code for the Abatement of Dangerous Buildings, 2023 NEC, plus listed elevator and people-mover standards under Title 15.
- Owner-builder
- Homeowners may act as their own contractor for residential additions, alterations, or repairs, but must submit a Homeowner Affidavit.
- Contractor requirements
- Contractors must have a valid license from a testing jurisdiction with an ICC-equivalent exam, liability insurance, workers compensation if applicable, pay registration fees, and register with the Town before permit application.
Source: Town of Castle Rock Development Services, Building Division ↗
Application process
Application → plan check → issuance → inspection → final
- 01 Confirm project type and code requirements on the Building Division and residential or commercial permit pages.
- 02 Register contractor or prepare homeowner permit materials if owner-builder.
- 03 Create an eTRAKiT account and submit the permit application and PDF plans/documents online.
- 04 Respond to plan review comments in eTRAKiT if review is required.
- 05 Pay permit fees and use tax when invoiced.
- 06 Receive issued permit in eTRAKiT and post or keep permit records available on site.
- 07 Schedule inspections in eTRAKiT or by hotline and obtain final approvals.
Source: Town of Castle Rock Development Services, Building Division ↗
Fee schedule
Castle Rock building permit fees
Permit fees are paid through eTRAKiT; Town building use tax may also apply even to some construction modifications that do not require a permit.
Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.
Required inspections
Scheduling and sequence
- eTRAKiT until 6:30 a.m. on requested date (online)
- Inspection Hotline (phone)
- Scheduling deadline
- eTRAKiT until 6:30 a.m. on the requested date, or call by 3:30 p.m. for next-business-day inspection.
- Inspection hours
- 7:30 a.m. to 5 p.m.; Building Counter assistance after 8 a.m.
Typical sequence: Permit issuance, required trade or building inspections, corrections if needed, then final approvals.
Same-day cancellations after 6:30 a.m. require calling the Building Counter; if the hotline request cannot be accommodated, staff contacts the applicant.
Source: Town of Castle Rock Development Services, Building Division ↗
Frequently asked
Common questions about Castle Rock permits
01 Do I need a building permit in Castle Rock, CO? ▸
02 How much does a building permit cost in Castle Rock, CO? ▸
03 How do I apply for a building permit in Castle Rock, CO? ▸
04 How do I schedule a building inspection in Castle Rock, CO? ▸
Educational reference. Permit rules and fees change — confirm current requirements directly with Town of Castle Rock Development Services, Building Division before applying. Jaspector is not legal advice.