Town of Castle Rock, CO - 2026 Building Permit Guide

Permit Authority

Applies inside Town of Castle Rock municipal limits; unincorporated county areas are handled by Douglas County.

Department

Town of Castle Rock Development Services, Building Division

Address

100 N Wilcox St, Castle Rock, CO 80104

Phone

720-733-3527

Email

Contact form at https://www.crgov.com/FormCenter/Development-Services-61/Building-Counter-Help-Form-501

Website

https://www.crgov.com/1887/Building

Online Permit Portal

Application Process

1. Confirm project type and code requirements on the Building Division and residential or commercial permit pages.
2. Register contractor or prepare homeowner permit materials if owner-builder.
3. Create an eTRAKiT account and submit the permit application and PDF plans/documents online.
4. Respond to plan review comments in eTRAKiT if review is required.
5. Pay permit fees and use tax when invoiced.
6. Receive issued permit in eTRAKiT and post or keep permit records available on site.
7. Schedule inspections in eTRAKiT or by hotline and obtain final approvals.

Source: Town of Castle Rock Development Services, Building Division

General Requirements

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.

Required Documents

• 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.

Fees

Plan check fee

Included in Development Services fee schedule; project-specific.

Permit fee formula

Development Services fee schedule; building permit fees and valuation data plus Town building use tax apply.

Reinspection fee

Confirm from current Development Services fee schedule.

Payment note

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. Verify current amounts at the official fee schedule.

Work That Does NOT Require a Permit

Contact the Town of Castle Rock Development Services, Building Division to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

• 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 inspection 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.

Additional Resources

• 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.
• Verify contractor license: Contractor Registration
• Zoning information: View zoning info
• Owner-builder rules: View rules
• Inspections
• License lookup guide: Colorado Contractor License Requirements
• Contract template: Colorado Homeowner-Contractor Agreement
• Colorado hub: Colorado Contractor License & Permit Hub

Frequently Asked Questions

Town of Castle Rock Building Permit FAQ

Do I need a building permit in Town of Castle Rock, CO?

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.

How much does a building permit cost in Town of Castle Rock, CO?

Fees are calculated as: Development Services fee schedule; building permit fees and valuation data plus Town building use tax apply.. Plan check fee: Included in Development Services fee schedule; project-specific..

How do I apply for a building permit in Town of Castle Rock, CO?

1. Confirm project type and code requirements on the Building Division and residential or commercial permit pages. 2. Register contractor or prepare homeowner permit materials if owner-builder. 3. Create an eTRAKiT account and submit the permit application and PDF plans/documents online. 4. Respond to plan review comments in eTRAKiT if review is required. 5. Pay permit fees and use tax when invoiced. 6. Receive issued permit in eTRAKiT and post or keep permit records available on site. 7. Schedule inspections in eTRAKiT or by hotline and obtain final approvals.

How do I schedule a building inspection in Town of Castle Rock, CO?

Inspections can be scheduled via: eTRAKiT until 6:30 a.m. on requested date, Inspection Hotline. eTRAKiT until 6:30 a.m. on the requested date, or call by 3:30 p.m. for next-business-day inspection..

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