Boulder County Building Department 2026: Permits, Inspections & Services

Boulder County Building Permits & Inspections: Where to Start

The Boulder County Building Department functions through Building Safety and Inspection Services, part of the county’s Community Planning and Permitting Department. It handles building permits, construction plan reviews, inspections, building-code compliance, and related services primarily for unincorporated Boulder County, Colorado.

If you need to apply for a building permit, check an existing permit, arrange an inspection, or find the building codes in effect for 2026, the information below explains the available services and how to use them.

Boulder County Building Department Contact Information

Public Office and Virtual Service Hours

Office hours can change during holidays or special closures. Check the official department page before visiting.

Does Boulder County Issue Permits for Your Property?

Before preparing an application, confirm whether your property is inside an incorporated municipality or in unincorporated Boulder County. This determines which government office reviews and issues your permit.

If jurisdiction is unclear, call 303-441-3930 or use the county’s planning and permitting resources before applying.

When Is a Building Permit Required?

Boulder County requires permits for most regulated construction, additions, significant alterations, demolition, and certain installations. The following examples come from the county’s published building-permit guidance.

Small Shed Exemption: Important Local Rules

The county’s building-permit exemption guidance provides specific conditions for certain one-story detached accessory structures, including storage sheds and similar structures.

• Maximum floor area is generally 120 square feet; qualifying agricultural loafing sheds have a separate 200-square-foot limit.
• Maximum height is 12 feet.
• No utilities may be installed.
• The structure must comply with land-use approvals and conservation easements.
• The number of exempt detached accessory structures depends on parcel size.

The published parcel-based limits generally allow one qualifying structure on parcels of 0.5 acre or less, two on parcels greater than 0.5 acre but smaller than 10 acres, and three on parcels of at least 10 acres.

A building-permit exemption is not a zoning exemption. Setbacks, property restrictions, floodplain regulations, and other requirements can still apply.

For project-specific exemptions, consult Boulder County Building Permit Requirements B05.

How to Apply for a Boulder County Building Permit Online

Most applications can be submitted through the county’s online permitting system. Prepare your project information and documents before beginning.

1. Confirm your jurisdiction. Make sure Boulder County is the appropriate permitting authority for your property.
2. Check whether planning approval is needed. New buildings, additions, changes of use, and projects affecting setbacks or land use may require review before permit issuance. Contact the planning department if uncertain.
3. Choose the correct permit category. Determine whether your project requires a regular building permit or qualifies for the Easy Building Permit program.
4. Prepare your documents. Collect the site plan, building plans, property details, contractor information, and any technical reports applicable to your work.
5. Open the official online service. Visit Boulder County Online Permits, Licenses, and Applications.
6. Create an account or sign in. A registered account is required for submitting applications and making online payments.
7. Start a building permit application. Select the applicable application service and complete the requested property, applicant, and project information.
8. Upload supporting documents. Submit the required PDF plans and additional files in the designated upload areas.
9. Review and submit. Check all information before completing the submission. Save the application reference number.
10. Respond to review comments. Monitor the application, provide corrections when requested, and pay applicable fees using the authorized payment process.

Online screen names can change. The county’s official online application page provides current registration and submission instructions.

Documents Commonly Required

Requirements depend on the scope of work. For a typical plan-reviewed construction project, prepare the following as applicable:

• Completed building permit application.
• Site plan identifying the project location, structures, setbacks, and proposed improvements.
• Construction drawings showing the proposed work.
• Structural calculations and engineering documents where required.
• Energy compliance documentation or HERS information where applicable.
• Soils or geotechnical reports for projects requiring them.
• Water supply and wastewater or septic documentation.
• Contractor information and applicable licensing documentation.
• Additional wildfire, floodplain, access, grading, or land-use approvals if required.

Boulder County’s general instructions specify a minimum plan scale of 1/4 inch equals 1 foot, and request separate PDF files for certain supporting materials. An interior-only project generally does not need a site plan under the county’s standard application guidance.

Use the official building publications and application forms to locate the current Building Permit Application B01, residential requirements, and project-specific checklists.

Easy Building Permit (EZ BP) Program

Boulder County has an Easy Building Permit (EZ BP) option for eligible simple residential projects that do not require plans. This can offer a more straightforward application process for qualifying work.

Not every minor project qualifies. Eligibility depends on the actual work being performed, and specialized reviews or supporting documentation may still be necessary.

1. Describe the proposed residential work precisely.
2. Review the county’s Easy Building Permit eligibility information.
3. Confirm that your project does not require standard plan review.
4. Use the appropriate county application procedure.
5. Complete the permit process and arrange any required inspections.

Check the official EZ BP information before selecting this option.

Boulder County Building Permit Fees

There is no single permit fee that applies to every construction project in Boulder County. Charges vary according to project type, scope, valuation, required reviews, and applicable county assessments.

The county provides a fee estimator and its published Building Permit Fees B33 document. The fee document identified on the official site is dated January 1, 2023; applicants should verify the currently applicable charges before payment.

View official permit fees and estimator links.

How to Schedule a Building Inspection

Once your permit has been issued and the relevant construction stage is ready, inspections can be requested online, by telephone, or by text.

Schedule an Inspection by Phone

1. Have your permit number and inspection code ready.
2. Call 303-441-3925.
3. Press 1 for English or 2 for Spanish.
4. Press 1 to request an inspection.
5. Enter the permit number and inspection code as directed.
6. Follow the prompts to complete the request.

The building permit number generally begins with BP and appears on the permit card. Required inspection codes are available on the inspection card and through the phone system.

Inspection Phone Menu

Schedule by Text

Text SCHEDULE to 877-558-7966, then follow the instructions.

Other supported commands include RESCHEDULE, CANCEL, RESULTS, and SPANISH.

Check Inspection Times and Results

The daily inspection schedule is generally posted or updated around 9 a.m. on the scheduled inspection day. Inspection times are approximate and may change.

You can obtain inspection results through the county’s online records, telephone menu, or text service.

Special Inspections and Photo Documentation

Some Boulder County inspections have additional procedures:

• Re-roofing and temporary electric meter releases: Typically use photo documentation submitted for inspector review after the inspection is scheduled.
• Solar photovoltaic and wallboard inspections: Photo review may be allowed at the inspector’s discretion.
• Pre-rough wildfire inspections: Must be coordinated directly with the Wildfire Mitigation Coordinator at wildfireinspections@bouldercounty.gov.
• Final Access and Engineering inspections: Have a separate weekly coordination procedure, including a Thursday noon scheduling cutoff for inspection code 82.
• Engineering reports and surveys: Some required reports must be reviewed before an inspection can be scheduled. The county instructs applicants to submit applicable reports at least 24 hours in advance.

Always review the inspection conditions on your permit card. See the complete official inspection procedures for photo requirements, specialized inspections, and scheduling details.

How to Search Building Permits and Check Application Status

Boulder County provides online permit records for residents, property buyers, homeowners, and contractors. Public searches do not require an account.

1. Open the county’s Online Permits and Records page.
2. Select the option to view permits, licenses, or applications.
3. Search using the available permit number, property information, or other search fields.
4. Open the matching record and review available application or permit details.
5. Check the status, available documents, fees, and inspection results where displayed.
6. If information is missing, contact Building Safety and Inspection Services.

The county also offers a separate Building Permit Search and Statistics resource, including permit records from 2009 onward and mapping of active permits in unincorporated Boulder County.

For older information or help interpreting records, call 303-441-3926.

Boulder County Building Codes Effective in 2026

Effective July 1, 2026, Boulder County adopted the 2021 International Code series with county-specific amendments for new building permit applications in unincorporated Boulder County.

The county’s adopted framework includes:

Additional adopted code provisions and local amendments apply. The county’s amendments also address energy conservation, sustainable building requirements, and ignition-resistant construction.

Wildfire-Resistant Construction Requirements

Boulder County updated its wildfire-resiliency building requirements effective July 1, 2026, including provisions for three wildfire zones. Requirements can vary according to the property’s mapped wildfire zone and the type of construction.

Projects may need specific ignition-resistant materials and construction details. Do not assume that requirements applicable to one property also apply to another.

Review the county’s Ignition Resistant Construction B37 guidance and the current wildfire-zone map before finalizing construction plans.

Contractor Licensing and Owner-Builder Requirements

Contractors performing regulated work may need appropriate Boulder County licensing and any applicable state-level credentials. Requirements differ by work type and trade.

Before hiring a contractor or submitting an application:

• Confirm whether the contractor needs a Boulder County contractor license.
• Check the relevant license category for the proposed work.
• Verify whether electrical or plumbing work requires additional state licensing.
• Identify who will be responsible for obtaining the permit and requesting inspections.
• Ask the county whether an owner-builder application is permitted for your particular project.

The county’s Building Safety and Inspection Services page provides access to contractor licensing information and licensed-contractor resources.

Permit Reviews, Corrections, and Final Approval

Submitting a building permit application does not mean construction may begin. The application may require reviews by several county divisions depending on the project.

These may include zoning, planning, access and engineering, floodplain management, public health, electrical plan review, and building plan review.

If Your Application Needs Corrections

1. Review the official plan-review comments.
2. Identify each required change or missing document.
3. Revise the affected drawings or forms.
4. Upload the corrections using the designated online application process.
5. Check the application for further review comments or approval.

After Permit Issuance

Keep your approved plans and permit documents available as required. Arrange inspections at the specified stages, resolve deficiencies, and complete all required final approvals.

The county’s published FAQ generally states that issued permits remain valid provided work begins within 180 days and is not suspended or abandoned for 180 days. Confirm any permit-specific conditions or extensions with the building office.

Common Problems and What to Do

For online technical problems, email cpptechsupport@bouldercounty.gov. For building-code or permit questions, contact the building office at 303-441-3926.

Official Boulder County Building Resources

These are the primary government resources used to verify the information in this guide.

For a separate municipal project in the Denver metropolitan area, see our Aurora building permit guide. Aurora’s city process does not replace Boulder County’s requirements for county-administered properties.

Boulder County Building Department FAQs

Information reviewed: October 2026. Government procedures, fees, adopted codes, and operating hours may change. USBuilding.org is an independent informational resource and is not affiliated with or operated by Boulder County government. Official county instructions and adopted regulations control.