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Zoning Guide

Castle Rock Zoning & Land Use Guide

Data-only stub — facts unverified locally. Confirm with the planning department before relying on details.
Last updated: Verified:

What we have on file vs. what to verify locally

We don't have editor-verified zoning prose for Castle Rockyet. Here's the structured data we do have, and the highest-leverage steps to confirm specifics for your parcel.

What we have on file

Population:
73,158
County:
Douglas County
State building code:
No mandatory statewide code (local jurisdictions adopt)(statewide default)
State ADU law:
Yes — Colorado HB 24-1152 (signed May 13, 2024, effective June 30, 2025) requires subject jurisdictions (municipalities of 1,000+ within a metropolitan planning organization, or counties with a census-designated place of 40,000+ within an MPO) to allow at least one accessory dwelling unit on lots zoned for a single-unit detached dwelling, through an administrative approval process, and prohibits certain restrictive requirements including parking minimums and owner-occupancy rules.
FEMA flood map:
Search flood zones
Planning department:
Town of Castle Rock Development Services
Municipal code:
View code online
Zoning map:
View city zoning map

Verify these locally

  • Call the Town of Castle Rock Development Services: (303) 660-1393
  • Search the municipal code for the chapter that covers your zoning district and proposed use.
  • Use the city zoning map to look up your parcel's zoning designation before applying for a permit.
  • Check FEMA flood zone for your parcel — flood-zone status changes setbacks, foundation requirements, and insurance.
  • Check your HOA CC&Rs and recorded deed restrictions — they are common in Castle Rock and frequently restrict ADUs, fences, and exterior changes beyond what zoning allows.

Key Zoning Facts

Planning Department
Town of Castle Rock Development Services(303) 660-1393
Building Code Edition
2021 IBC with Castle Rock Amendments
ADUs Allowed
No

Regulatory Layers That Apply in Castle Rock

Your property is subject to ALL of these regulatory layers. Each one can impose additional requirements beyond the others.

Federal

State — Colorado

  • Building Code: 2021 IBC (locally adopted)
  • State ADU Override: Yes (Colorado HB 24-1152 (signed May 13, 2024, effective June 30, 2025) — requires subject jurisdictions to allow at least one ADU on single-unit detached lots; prohibits parking minimums and owner-occupancy requirements.)
View Colorado zoning overview

County — Douglas County

    City / Municipal

    The city's zoning ordinance, building codes, and local permits form the primary layer of land-use regulation for your property.

    Overlay Districts

    No overlay districts identified.

    Private Restrictions

    • HOA / CC&Rs common: Yes
    • Check HOA CC&Rs for additional restrictions.

    Statewide Context (Colorado)

    Local data for Castle Rock is limited. The following state-level facts apply across Colorado and are inherited by this page until city-specific details are verified.

    State Building Code
    No mandatory statewide code (local jurisdictions adopt)
    State ADU Preemption
    Yes — state law overrides local rules
    Coastal Zone
    No
    Wildfire Zones
    Yes

    ADU Rules in Castle Rock

    ADUs:Allowed(statewide context — not city-specific)

    State law (statewide context, not city-specific):

    Colorado HB 24-1152 (signed May 13, 2024, effective June 30, 2025) requires subject jurisdictions (municipalities of 1,000+ within a metropolitan planning organization, or counties with a census-designated place of 40,000+ within an MPO) to allow at least one accessory dwelling unit on lots zoned for a single-unit detached dwelling, through an administrative approval process, and prohibits certain restrictive requirements including parking minimums and owner-occupancy rules.

    Source (Colorado)

    For local size, setback, and parking specifics, contact the Town of Castle Rock Development Services.

    Permit Costs & Timelines

    Permit Costs & Timelines

    Specific permit fee schedules for Castle Rock are available from the local planning department. Fees vary based on project type, scope, and valuation.

    Check Castle Rock permit fees →

    Official Sources

    City-specific

    Town of Castle Rock Development Servicescrgov.comOfficial sourceCastle Rock Municipal Codelibrary.municode.comOfficial source