County Building Permits
Douglas County, CO - 2026 Building Permit Guide
How to apply for a building permit in unincorporated Douglas County, Colorado. Permit authority, application steps, fees, and inspection requirements.
Permit Authority
Covers unincorporated areas of Douglas County, including communities such as Highlands Ranch and Roxborough Park unless a property lies inside a municipality.
- Department
- Douglas County Building Division
- Address
- 100 Third Street, Castle Rock, CO 80104
- Phone
- 303-660-7497
Online Permit Portal
Platform: Douglas County Building Services online portal • Account required: Yes • Submission: In-person only
Additional resources:
Application Process
- Verify parcel is in unincorporated Douglas County.
- Select permit type from the County permit list.
- Request an account for online permit types or prepare PDF submittal package.
- Submit application and supporting documents electronically.
- Satisfy contractor registration and any related county, fire district, health, floodplain, or public works requirements.
- Pay fees and obtain issued permit.
- Schedule inspections online or by IVR and complete final approvals.
Source: Douglas County Building Division
General Requirements
County issues building permits for installation and alteration of buildings and structures in unincorporated areas and publishes permit categories for most residential, commercial, and trade work.
Required Documents
- Individual PDF documents
- Project-specific plans
- Forms and supporting calculations or engineering as applicable
- Building code
- County permit page currently references 2024 IRC, 2024 IPC, 2024 IMC, and 2026 NEC.
- Contractor requirements
- Contractor Registration Program requires contractors applying for permits to be registered.
Fees
- Plan check fee
- Permit-type specific and not summarized on the main page reviewed.
- Permit fee formula
- Permit-type specific; verify with County Building Division.
- Reinspection fee
- Not clearly summarized on the main page reviewed.
- Payment note
- Permit and inspection information available online 24/7.
Work That Does NOT Require a Permit
Contact the Douglas County Building Division to confirm whether your project requires a permit before starting work.
Inspections
How to Schedule
- County online scheduling (online)
- IVR (phone)
- Scheduling deadline
- Next business day if scheduled before 3:30 p.m.
- Inspection hours
- Estimated two-hour arrival window available between 8 and 9 a.m.
Typical inspection sequence: County rough and final inspection sequence varies by project and may include footing, foundation, underground trade work, framing, rough trades, insulation, drywall, roof, driveway, energy, wildfire-defensible-space, and finals.
Rescheduling available by phone; some related inspections route through Public Works, local fire districts, Health Department, or third parties.
Additional Resources
- Building code: County permit page currently references 2024 IRC, 2024 IPC, 2024 IMC, and 2026 NEC.
- Verify contractor license: Contractor Registration
- Zoning information: View zoning info
- Building Inspections
- Public Works Permits
- Health Department Septic Systems
- License lookup guide: Colorado Contractor License Requirements
- Contract template: Colorado Homeowner-Contractor Agreement
- Colorado hub: Colorado Contractor License & Permit Hub
Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the Douglas County Building Division before applying.
Frequently Asked Questions
Douglas County Building Permit FAQ
- Do I need a building permit in unincorporated Douglas County, CO?
- County issues building permits for installation and alteration of buildings and structures in unincorporated areas and publishes permit categories for most residential, commercial, and trade work.
- How much does a building permit cost in unincorporated Douglas County, CO?
- Fees are calculated as: Permit-type specific; verify with County Building Division.. Plan check fee: Permit-type specific and not summarized on the main page reviewed..
- How do I apply for a building permit in unincorporated Douglas County, CO?
- 1. Verify parcel is in unincorporated Douglas County. 2. Select permit type from the County permit list. 3. Request an account for online permit types or prepare PDF submittal package. 4. Submit application and supporting documents electronically. 5. Satisfy contractor registration and any related county, fire district, health, floodplain, or public works requirements. 6. Pay fees and obtain issued permit. 7. Schedule inspections online or by IVR and complete final approvals.
- How do I schedule a building inspection in unincorporated Douglas County, CO?
- Inspections can be scheduled via: County online scheduling, IVR. Next business day if scheduled before 3:30 p.m..
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