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Fence and Retaining Wall Permit in Castle Rock, Colorado

Fences and retaining walls in Castle Rock are exempt from a building permit below specific height thresholds per locally amended IBC/IRC Section 105.2/R105.2; taller structures require a permit.

Verified 2026-07-05 · Source

When you need this permit

  • Fences not over 6 feet high are exempt from a building permit (local amendment to both IBC Section 105.2 subsection 2 and IRC Section R105.2 subsection 1)
  • Swimming pool barriers of ANY height are explicitly NOT exempt from permit requirements, regardless of the general fence-height exemption
  • Retaining walls over 4 feet high, including the footing/foundation, require a permit (Development Procedures Manual, Chapter X - Permits)

Required documents

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Fee schedule

Building Permit Fee — valuation $0 to $500 (fences/walls requiring a permit)Town of Castle Rock Development Services Fee Schedule, effective July 1, 2026; no fence/retaining-wall-specific flat fee was found published — the general valuation-based Building Permit Fee table applies
$23.50

Review timeline

Plan review
Not published — contact the department

How long did your Fence and Retaining Wall Permit permit actually take in Castle Rock?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Footing

    Required for retaining walls with a permit, before backfill

  2. 2

    Final

    Completed fence/wall verified against approved plans

See the full Castle Rock inspection guide — scheduling & re-inspection fees →

Tips

  • A 6-foot fence threshold and a swimming-pool-barrier carve-out (no height exemption at all) are both Castle Rock-specific amendments — don't assume the base IRC/IBC exemption text applies unmodified.
  • The 4-foot retaining wall threshold is measured including the footing/foundation, not just the exposed wall face above grade.

Frequently asked questions

Castle Rock requires a fence and retaining wall permit for: Fences not over 6 feet high are exempt from a building permit (local amendment to both IBC Section 105.2 subsection 2 and IRC Section R105.2 subsection 1); Swimming pool barriers of ANY height are explicitly NOT exempt from permit requirements, regardless of the general fence-height exemption; Retaining walls over 4 feet high, including the footing/foundation, require a permit (Development Procedures Manual, Chapter X - Permits). If your project isn't listed, confirm with Town of Castle Rock Development Services, Building Division at 720-733-3527 before starting work.

In Castle Rock, the published Building Permit Fee — valuation $0 to $500 (fences/walls requiring a permit) is: $23.50. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Castle Rock does not publish a plan-review timeline for this permit. Contact Town of Castle Rock Development Services, Building Division at 720-733-3527 for current turnaround.

You'll need: Plan Review and Construction Permit Application (eTRAKiT). See the required-documents checklist on this page for details on each.

Castle Rock requires 2 inspection(s) for a fence and retaining wall permit, in order: Footing, Final. Schedule each through Town of Castle Rock Development Services, Building Division (720-733-3527).

Apply through Town of Castle Rock Development Services, Building Division at 100 N. Wilcox St., Castle Rock, CO 80104. Phone: 720-733-3527, email: buildingcounter@crgov.com. Office hours: Development Services Building Counter (Town Hall): Monday-Friday, 8 a.m. to 5 p.m. Inspection scheduling line: 303-660-1341.. Official information: https://www.crgov.com/1887/Building.

Castle Rock, Colorado has adopted: The Town of Castle Rock is a home-rule municipality that runs its OWN Building Division — it is a separate prequalified building department from Douglas County (confirmed via the Colorado Division of Fire Prevention and Control's Prequalified Building Departments list, which shows both 'Douglas County' and 'Town of Castle Rock' as distinct entries; Joseph Montoya is the Town of Castle Rock's listed prequalified contact, jmontoya@crgov.com, 720-733-2225). Source: Colorado DFPC Prequalified Building Departments list, https://dfpc.colorado.gov/sites/dfpc/files/Current%20Prequalified%20Building%20Departments.pdf; 2024 International Building Code (IBC), as amended by Ordinance No. 2026-017, adopted by Town Council June 2, 2026, effective June 30, 2026 (amending Castle Rock Municipal Code Title 15, Chapter 15.04); 2024 International Residential Code (IRC) for One- and Two-Family Dwellings, as amended by Ordinance No. 2026-017 (Castle Rock Municipal Code Chapter 15.06); 2024 International Plumbing Code (IPC); 2024 International Mechanical Code (IMC); 2024 International Fuel Gas Code (IFGC); 2024 International Fire Code (IFC), enforced by Castle Rock Fire and Rescue Department; 2024 International Existing Building Code (IEBC); 2024 International Swimming Pool and Spa Code (ISPSC); 2021 International Energy Conservation Code (IECC) — Castle Rock has adopted the 2024 editions of most I-Codes but retains the 2021 IECC rather than a newer edition; 2023 Colorado Model Electric-Ready and Solar-Ready Code, adopted by reference as new Castle Rock Municipal Code Chapter 15.15 via Ordinance No. 2026-017; applies to all new residential and commercial buildings and to additions/substantial remodels requiring a building permit; 2026 National Electrical Code (NEC); 2017 ICC A117.1 Accessible and Usable Buildings and Facilities (Ordinance No. 2026-017 adds a new Section 1102, Compliance, specifying the 2017 edition); 1997 Uniform Code for the Abatement of Dangerous Buildings; ASME A17.1-2022 (Safety Code for Elevators and Escalators), ASME A18.1-2020 (Platform Lifts and Stairway Chairlifts), ASME A17.3-2023 (Existing Elevators and Escalators); 2021 Automated People Mover Standards (ASCE 21, Parts 1-4); 2025 Colorado Wildfire Resiliency Code, effective July 1, 2026 (Castle Rock Municipal Code Chapter 15.20, per Ordinance No. 2026-017 amendments); Source for the full current adopted-code list and effective dates: Town of Castle Rock Adopted Building Codes page, https://www.crgov.com/2178/Adopted-Building-Codes, and Ordinance No. 2026-017 (full amendment text), https://www.crgov.com/ArchiveCenter/ViewFile/Item/2870. Local amendments apply — see the Castle Rock overview page for the full list.

No. While general fences under 6 feet are exempt, the Town's amendment explicitly states swimming pool barriers of any height are NOT exempt from permit requirements. Source: Ordinance No. 2026-017.

Sources & verification

Verified against official sources. Last reviewed 2026-07-05.

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Castle Rock building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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