Castle Rock Building Permits & Inspections: Start Here
The Castle Rock Building Department functions as the Town of Castle Rock Development Services Building Division. It handles building permit applications, plan review, code compliance and construction inspections for property under the Town’s building-permit jurisdiction.
For most projects, start by confirming that the property is actually inside the Town’s permitting jurisdiction, then use eTRAKiT to apply, upload plans, respond to review comments, pay permit fees and request inspections.
Castle Rock Building Division Contact Information
| Official agency | Town of Castle Rock Development Services — Building Division |
|---|---|
| Building Counter | Town Hall, 100 N. Wilcox St., Castle Rock, CO 80104 |
| Building Counter hours | Monday–Friday, 8 a.m.–5 p.m. Mountain Time, excluding applicable closures/holidays |
| Building Division phone | 720-733-3527 |
| Building Counter email | buildingcounter@crgov.com |
| Inspection hotline | 303-660-1341 |
| Online permitting | Town of Castle Rock eTRAKiT |
| Services | Permit applications, electronic plan review, payments, permit search, contractor search and inspections |
How to confirm the correct permit authority
- Open the Douglas County property mapping system.
- Search the exact street address and select the correct parcel.
- Open the property’s assessment details.
- Expand the account summary and locate the building-permit authority.
- If it lists Town of Castle Rock, use the Town Building Division and eTRAKiT process described here.
How to Apply for a Castle Rock Building Permit
The Town uses a paperless online process for most building applications. Have project documents ready in electronic format before you begin.
- Confirm jurisdiction. Verify that the Town of Castle Rock is the building-permit authority for the property.
- Create an eTRAKiT public account. Open eTRAKiT, choose Setup an Account, enter the requested information and create your login.
- Choose the permit. Sign in as a Public user and select Apply / New Permit from the Permits menu.
- Enter project information. Read the portal terms, continue to the application and provide the property, owner, contractor and work-scope information requested for that permit type.
- Upload the required documents. Depending on the project, this can include plans, a site/plot plan, structural details, calculations, product information, energy documents or a homeowner affidavit.
- Follow plan review in eTRAKiT. Watch the permit record for review comments. Upload corrections or revised plans if reviewers request changes.
- Pay and obtain the issued permit. After fees are calculated, open the permit in your dashboard, add applicable fees to the cart and complete payment. Do not begin permit-required work before authorization is issued.
Which Projects May Need a Building Permit?
Permit requirements depend on the exact work. Castle Rock provides separate residential and commercial processes, and zoning, fire, utility, right-of-way or stormwater approval may also apply to a project.
Residential permits that may not require plan review
The Town currently identifies several residential permit types that may be processed without normal plan review: re-roof, air conditioner, furnace, water softener and conventional water heater. A tankless water heater can trigger review of gas-piping load calculations.
Residential applicants can review project-specific guides and checklists on the Town’s Residential Permits page. Commercial applicants should use the Commercial Permits page.
Castle Rock Building Permit Fees in 2026
The Town’s updated Development Services fee schedule became effective July 1, 2026. Many standard building-permit fees are calculated from project valuation, so the permit fee is not a single flat amount.
| Total project valuation | 2026 building permit fee formula |
|---|---|
| $0–$500 | $23.50 |
| $501–$2,000 | $23.50 for first $500 + $3.05 per additional $100 or fraction |
| $2,001–$25,000 | $69.25 for first $2,000 + $14 per additional $1,000 or fraction |
| $25,001–$50,000 | $391.25 for first $25,000 + $10.10 per additional $1,000 or fraction |
| $50,001–$100,000 | $643.75 for first $50,000 + $7 per additional $1,000 or fraction |
| $100,001–$500,000 | $993.75 for first $100,000 + $5.60 per additional $1,000 or fraction |
| $500,001–$1,000,000 | $3,233.75 for first $500,000 + $4.75 per additional $1,000 or fraction |
| Over $1,000,000 | $5,608.75 for first $1,000,000 + $3.65 per additional $1,000 or fraction |
Other common 2026 building charges
| Fee item | Published amount / calculation |
|---|---|
| Plan review | 65% of the building permit fee, not 65% of project valuation |
| Approved master-plan tract-home plan review | $300 |
| Additional plan review, when applicable | $125 per hour, 1-hour minimum |
| Residential AC installation/replacement | $75 |
| Residential furnace installation/replacement | $75 |
| Residential water-heater installation/replacement | $75 |
| Residential or commercial re-roof | Based on valuation |
| Demolition permit | $100 |
| Generator over 5 kW | $75 |
| Change of occupancy with no construction | $250 |
| Change of tenancy with no construction/occupancy-classification change | $200 |
| Reinspection | $85 / $170 depending on applicable reinspection level |
For budgeting, use the official July 1, 2026 fee schedule and the valuation accepted by the Town. eTRAKiT displays calculated fees for an active permit.
How Castle Rock Building Inspections Work
Once permitted work reaches the required construction stage, request the applicable inspection before covering work that must remain visible.
Option 1: Schedule through eTRAKiT
- Sign in to eTRAKiT as a Public user.
- Open the permit under My Active Permits. Link the permit to your dashboard first if it is not shown.
- Select Request Inspection.
- Choose the inspection type, requested date and preferred time.
- Select Add inspection and check for the confirmation email.
Online inspection requests can be submitted until 6:30 a.m. on the requested inspection date. An email confirmation indicates that the request was successfully processed.
Option 2: Next-business-day inspection hotline
Call 303-660-1341 by 3:30 p.m. to request a next-business-day inspection. The hotline is for scheduling; calls are not normally returned unless the request cannot be accommodated.
- Monday request by 3:30 p.m. → Tuesday inspection
- Tuesday → Wednesday
- Wednesday → Thursday
- Thursday → Friday
- Friday → Monday
- Saturday or Sunday request → Tuesday
The site must be accessible to inspectors from 7:30 a.m. to 5 p.m. on the scheduled day. Inspections are not performed on Town holidays; affected inspections move to the following business day.
Castle Rock Building Codes Effective in 2026
Castle Rock’s updated building-code amendments took effect June 30, 2026, and the Colorado Wildfire Resiliency Code took effect July 1, 2026. New permit submittals are subject to the Town’s adopted codes and local amendments.
| Code area | Adopted standard |
|---|---|
| Building | 2024 International Building Code |
| Residential | 2024 International Residential Code |
| Plumbing | 2024 International Plumbing Code |
| Mechanical | 2024 International Mechanical Code |
| Fuel gas | 2024 International Fuel Gas Code |
| Fire | 2024 International Fire Code |
| Existing buildings | 2024 International Existing Building Code |
| Swimming pools & spas | 2024 International Swimming Pool and Spa Code |
| Energy | 2021 International Energy Conservation Code |
| Electrical | 2026 National Electrical Code |
| Accessibility reference | 2017 ANSI A117.1 |
| Wildfire resiliency | 2025 Colorado Wildfire Resiliency Code |
| Electric / solar readiness | Model Colorado Electric Ready and Solar Ready Code |
Town amendments and exceptions matter just as much as the model-code edition. Review the Town’s Adopted Building Codes page and applicable Title 15 provisions when preparing a technical design.
Homeowner Permits vs. Hiring a Contractor
If you are doing the work yourself
A homeowner may obtain a permit as an owner-contractor when performing work on a property that the homeowner owns and occupies as a primary residence. The Town states that rental properties are not an exception to this owner-occupancy requirement.
A homeowner performing permitted work must complete a Homeowner Affidavit. If signed at the Building Counter, the Town verifies it in person. If submitted electronically, it must first be notarized. The homeowner doing the work must sign the affidavit; a contractor cannot sign it on the owner’s behalf.
If you hire a contractor
Contractors performing regulated work must hold the applicable license and maintain current registration with the Town. Before permit approval, verify registration through eTRAKiT rather than relying only on a business card or advertisement.
Town registration generally requires the applicable contractor license or competency documentation, liability insurance, workers’ compensation documentation when required and the registration fee. Electrical and plumbing contractors also have applicable Colorado state licensing requirements.
| Registration class | Published annual fee |
|---|---|
| Class A — General Contractor | $150 |
| Class B — Building Contractor | $150 |
| Class C — Residential Contractor | $150 |
| Class D — Single Trade | $75 |
| Class E — Electrical | No Town registration fee listed; state master license required |
| Class M — Mechanical | $75 |
| Class P — Plumbing | $75; state master license required |
| Class S — State Licensed Trade | $75 |
Castle Rock Requirements That Can Affect Your Project
Wildfire resiliency
Castle Rock applies the Colorado Wildfire Resiliency Code. Depending on the property’s mapped fire-intensity classification, new construction, additions, re-roof projects and some exterior renovations can be subject to additional material or construction requirements. Properties are classified as Low, Moderate or High fire intensity.
Residential erosion and sediment control
Applicable residential development can require Temporary Erosion and Sediment Control (TESC) approval. The Town states that residential developments subject to the vertical residential TESC program must have an approved TESC plan and permit in place before the building permit is released.
Decks, patios and structural work
For covered decks and patios, the Town’s submittal requirements can include a site plan, scaled drawings, elevations, structural member information, footing details, roof design, connection details, electrical information and sealed truss documents where applicable. Uncovered decks have their own submission requirements.
Permit expiration
The Town’s eTRAKiT public-account guide states that permits expire 180 days after issuance. An expired permit no longer appears with active permits on the dashboard. Contact buildingcounter@crgov.com to request reopening or an extension where allowed.
Official Castle Rock Permit Resources
| Official resource | Use it for |
|---|---|
| eTRAKiT Development Portal | Apply, search permits, pay fees, find contractors and request inspections |
| Building Division | Department services, contact information and current notices |
| Homeowner Permit Guidance | Jurisdiction checks, homeowner permits and contractor guidance |
| Residential Permits | Residential applications, guides and checklists |
| Commercial Permits | Commercial application and contractor requirements |
| Building Inspections | Scheduling cutoffs, cancellations and inspection hotline |
| Adopted Building Codes | 2026 code editions and amendments |
| 2026 Fee Schedule | Building, plan-review, impact and other Development Services fees |
Castle Rock Building Department FAQs
1. Where is the Castle Rock Building Department?
Building services are provided by the Town of Castle Rock Development Services Building Division. The Building Counter is at Town Hall, 100 N. Wilcox St., Castle Rock, CO 80104. Call 720-733-3527 for building-permit assistance.
2. How do I apply for a building permit in Castle Rock?
Create a public account in the Town’s eTRAKiT portal, sign in, select Apply / New Permit, choose the appropriate permit type, complete the application and upload the documents required for your project. Review comments, fees and inspections can also be managed through the portal.
3. How can I tell whether my property is under Town or Douglas County jurisdiction?
Search the parcel using Douglas County’s property map, open Assessment Details and Account Summary, then check the listed building-permit authority. Use Castle Rock’s process only when the Town of Castle Rock is identified as the authority.
4. How much does a Castle Rock building permit cost in 2026?
Many building-permit fees are valuation-based. The July 1, 2026 schedule starts at $23.50 for projects valued up to $500 and uses increasing valuation brackets for larger projects. Plan review, use tax, impact fees and other charges can also apply, so the final total depends on the project.
5. How do I schedule a Castle Rock building inspection?
Use eTRAKiT to request an inspection by 6:30 a.m. on the requested day, or call the inspection hotline at 303-660-1341 by 3:30 p.m. for a next-business-day request. Check for an eTRAKiT confirmation email after submitting online.
6. Can a homeowner pull their own permit?
Yes, subject to the Town’s owner-contractor rules. The homeowner must own and occupy the property as a primary residence and perform the work being claimed under the homeowner permit. A Homeowner Affidavit is required and must be properly verified or notarized depending on how it is submitted.
7. Does a contractor need to register with Castle Rock?
Yes, contractors performing regulated construction work must hold the applicable credentials and maintain current Town registration. The Building Division verifies contractor registration before applicable permit approval, and registration can be searched in eTRAKiT.
8. Which building codes apply in Castle Rock in 2026?
New permit submittals are subject to Castle Rock’s adopted code package, including the 2024 IBC, 2024 IRC, 2024 plumbing and mechanical codes, 2021 IECC, 2026 NEC, 2025 Colorado Wildfire Resiliency Code and Town amendments. Project-specific exceptions in the Municipal Code can also apply.
9. Do I need plan review for a simple replacement permit?
Not always. Castle Rock identifies residential re-roof, AC, furnace, water-softener and standard water-heater permits as types that may not require normal plan review. Tankless water heaters can require review of gas-piping load calculations.
10. How long is a Castle Rock building permit valid?
The Town’s eTRAKiT public-account guide states that permits expire 180 days after issuance. If a permit has expired, contact the Building Counter at buildingcounter@crgov.com to ask about an extension or reopening process before continuing permit-regulated work.
Before You Submit Your Permit
- Confirm that the Town of Castle Rock is the building-permit authority for the exact parcel.
- Choose the correct residential, commercial or specialty permit type.
- Prepare required plans and supporting documents before opening the application.
- Verify contractor registration if someone else will perform the work.
- Check wildfire, zoning, TESC and other project-specific requirements.
- Budget for plan review, use tax and other applicable charges in addition to the base permit fee.
- Do not cover work that requires inspection before the inspection is completed.
Independent information notice: USBuilding.org is an informational resource and is not the Town of Castle Rock or a government agency. Permit rules, fees and procedures can change; project-specific conditions and the officially issued permit control.