This is PermitBase’s published record for Castle Rock as of 2026-07-05. It has since been superseded — see the current record. A historical record reflects what PermitBase had verified at that time; it may not capture a real-world change the jurisdiction had made but PermitBase had not yet verified, and it includes any errors we later corrected. Snapshots are never edited retroactively.
Castle Rock building permits
VerifiedCastle Rock, Colorado — as published 2026-07-05.
Verified 2026-07-05 · Source
Codes 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.pdf2024 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 Department2024 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 edition2023 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 permit2026 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 BuildingsASME 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
Permit types & fees
Residential Building Permit (New Construction)
VerifiedRequired for construction of new single-family homes, duplexes, and other one- and two-family dwellings within the Town of Castle Rock. Issued and inspected by the Town's own Development Services Building Division (not Douglas County) under the 2024 IRC as locally amended by Ordinance No. 2026-017, plus the 2021 IECC and 2023 Colorado Model Electric-Ready and Solar-Ready Code.
Verified 2026-07-05 · Source
Requirements
- Plans must comply with the 2024 IRC as locally amended, plus the 2021 IECC and the 2023 Colorado Model Electric-Ready and Solar-Ready Code
- Design must meet Castle Rock's amended Table R301.2(1) criteria: 115 mph Vult wind speed, Seismic Design Category B, 36-inch minimum frost depth, mandatory ice barrier underlayment, and tiered ground snow load (30 psf below 6,000 ft elevation, 35 psf at 6,000-6,499 ft, 40 psf at 6,500-7,000 ft, not reducible)
- Foundation inspections must be performed by a Colorado-licensed professional engineer or registered architect, with a stamped written report submitted to the Building Official
- Building valuation set using the Town's own Building Valuation Table (ICC August 2016 data, Town-specific per-occupancy-group $/sq ft rates), not solely the applicant's stated cost
- All submittals are electronic-only via eTRAKiT, following the Town's Electronic Submittal Guidelines (flattened/optimized PDF, no layers, True Type fonts, bookmarked sheets)
- Contractor registration with the Town is required; homeowners may self-permit only their own owner-occupied primary residence via a notarized/in-person Homeowner Affidavit — not available for rental properties
Required documents
- RequiredPlan Review and Construction Permit Application (eTRAKiT)Submitted electronically via the eTRAKiT Development Portal
- RequiredConstruction DrawingsFull architectural, structural, mechanical, electrical, and plumbing plan set combined into a single bookmarked PDF, sealed by the design professional
- RequiredSite PlanProperty lines, setbacks, and location of proposed and existing structures
- OptionalHomeowner AffidavitRequired only if the applicant is self-permitting as an owner-occupant of their own primary residence; must be signed in-person at the Building Counter or notarized if submitted electronically
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee — valuation $0 to $500 | $23.50 | Town of Castle Rock Development Services Fee Schedule, effective July 1, 2026 |
| Building Permit Fee — valuation $501 to $2,000 | $23.50 for the first $500 plus $3.05 for each additional $100 or fraction thereof, to and including $2,000 | — |
| Building Permit Fee — valuation $2,001 to $25,000 | $69.25 for the first $2,000 plus $14.00 for each additional $1,000 or fraction thereof, to and including $25,000 | — |
| Building Permit Fee — valuation $25,001 to $50,000 | $391.25 for the first $25,000 plus $10.10 for each additional $1,000 or fraction thereof, to and including $50,000 | — |
| Building Permit Fee — valuation $50,001 to $100,000 | $643.75 for the first $50,000 plus $7.00 for each additional $1,000 or fraction thereof, to and including $100,000 | — |
| Building Permit Fee — valuation $100,001 to $500,000 | $993.75 for the first $100,000 plus $5.60 for each additional $1,000 or fraction thereof, to and including $500,000 | — |
| Building Permit Fee — valuation $500,001 to $1,000,000 | $3,233.75 for the first $500,000 plus $4.75 for each additional $1,000 or fraction thereof, to and including $1,000,000 | — |
| Building Permit Fee — valuation $1,000,001 and up | $5,608.75 for the first $1,000,000 plus $3.65 for each additional $1,000 or fraction thereof | — |
| Plan Review Fee | 65% of the Building Permit Fee (not of valuation); $300 flat for tract homes with an approved Master Plan | Fee Schedule effective July 1, 2026 |
| Administrative Cost Allocation Recovery Fee — New Residential (per building, primary dwelling unit only) | $4,200.00 | — |
| Castle Rock Use Tax | 1/2 valuation x 4.2% | — |
| Douglas County Use Tax | 1/2 valuation x 1% | — |
| Building Valuation — R-3 One- and Two-Family Dwelling, Type VB | $170.80 per sq ft (Type VB); rates vary $170.80-$218.08/sq ft by construction type IA-VB | Town of Castle Rock Building Valuation Table, effective July 1, 2026, based on ICC August 2016 Building Valuation Data |
Residential Addition / Remodel / Basement Finish Permit
VerifiedRequired for additions, basement finishes, and structural alterations to existing one- and two-family dwellings in Castle Rock. Reviewed under the 2024 IRC as locally amended. Basement finishes, decks, patio covers, sunrooms, carports, and detached garages follow a faster review track than full additions per the Town's own published timeline table.
Verified 2026-07-05 · Source
Requirements
- Building permits required for additions, remodels, interior improvements, basement finishes, decks, patios, awnings, pools, and spas
- Permits required for retaining walls over 4 feet high (including the footing/foundation) and for new mechanical equipment
- Plans must comply with the 2024 IRC as locally amended, including Castle Rock's amended structural design criteria (115 mph wind, Seismic Category B, 36-inch frost depth, tiered snow load)
- Deck construction must meet the Town's amended Table R507.7 maximum joist spacing table for decking material/thickness
- Contractor registration required; homeowner self-permit option available only for the applicant's own owner-occupied primary residence
Required documents
- RequiredPlan Review and Construction Permit Application (eTRAKiT)Submitted electronically via the eTRAKiT Development Portal
- RequiredResidential Addition ChecklistTown-published checklist of required submittal items for residential addition permits
- OptionalBasement Finish Checklist and Building GuideTown-published checklist specific to basement finish permits
- RequiredSite Plan / Construction DrawingsScope, dimensions, and connection of the addition/alteration to the existing structure
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee (valuation-based, same tiers as new construction) | $23.50 minimum, scaling to $5,608.75 + $3.65/$1,000 over $1,000,000 | Town of Castle Rock Development Services Fee Schedule, effective July 1, 2026 |
| Plan Review Fee | 65% of the Building Permit Fee | — |
| Miscellaneous Permits and Fees (default, unless separately scheduled) | $75.00 | — |
Electrical Permit
VerifiedRequired for electrical installation, alteration, or repair work in Castle Rock, governed by the 2026 National Electrical Code (NEC) as locally administered by the Town's Development Services Building Division.
Verified 2026-07-05 · Source
Requirements
- Electrical permit required for new construction wiring, service upgrades, added circuits, and installations tied to solar-ready zones
- Where a solar-ready zone is installed for future electricity generation, electrical rough-in inspection must verify conduit/prewiring from the solar-ready zone to the electrical panel per local amendment R105.2.4.1
- Contractor registration with the Town required; homeowners may self-permit electrical work only on their own owner-occupied primary residence
Required documents
- RequiredPlan Review and Construction Permit Application (eTRAKiT)Submitted electronically via the eTRAKiT Development Portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Standalone trade permit (valuation-based, same Building Permit Fee tiers) | $23.50 minimum, scaling per the standard valuation table | No separate flat electrical-only fee table was found published; the Town's Fee Schedule applies the general Building Permit Fee valuation tiers to trade work not otherwise flat-fee scheduled. Town of Castle Rock Development Services Fee Schedule, effective July 1, 2026 |
| Plan Review Fee | 65% of the Building Permit Fee | — |
Plumbing Permit
VerifiedRequired for plumbing installation, alteration, or repair work in Castle Rock, governed by the 2024 International Plumbing Code (IPC) as adopted and locally administered by the Town.
Verified 2026-07-05 · Source
Requirements
- Plumbing permit required for new/altered water, sewer, and gas piping installations not covered by a flat-fee replacement item
- Water heater replacement/installation is billed as a flat fee rather than valuation
- Contractor registration with the Town required; homeowners may self-permit plumbing work only on their own owner-occupied primary residence
Required documents
- RequiredPlan Review and Construction Permit Application (eTRAKiT)Submitted electronically via the eTRAKiT Development Portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Residential Water Heater Replacement/Installation | $75.00 | Town of Castle Rock Development Services Fee Schedule, effective July 1, 2026 (listed jointly with A/C and furnace replacement/installation) |
| Standalone trade permit (valuation-based, for work not on the flat-fee list) | $23.50 minimum, scaling per the standard valuation table | General Building Permit Fee valuation tiers apply absent a specific flat fee |
| Plan Review Fee | 65% of the Building Permit Fee | — |
Mechanical / HVAC Permit
VerifiedRequired for heating, cooling, and gas-fired equipment installation/replacement in Castle Rock, governed by the 2024 International Mechanical Code (IMC) and 2024 International Fuel Gas Code (IFGC).
Verified 2026-07-05 · Source
Requirements
- Permit required for furnace, air conditioner, and other mechanical equipment installation or replacement
- Residential air conditioner, water heater, and furnace replacement/installation are billed at a shared flat fee
- Generators over 5kW require a permit at a flat fee
- Contractor registration with the Town required; homeowners may self-permit mechanical work only on their own owner-occupied primary residence
Required documents
- RequiredPlan Review and Construction Permit Application (eTRAKiT)Submitted electronically via the eTRAKiT Development Portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Residential Air Conditioner, Water Heater, and Furnace Replacement/Installation | $75.00 each | Town of Castle Rock Development Services Fee Schedule, effective July 1, 2026 |
| Generator over 5kW | $75.00 | — |
| Plan Review Fee | 65% of the Building Permit Fee (for valuation-based mechanical work not on the flat-fee list) | — |
Roofing Permit (Re-Roof)
VerifiedRequired for residential and commercial re-roofing in Castle Rock, billed based on valuation. Governed by the 2024 IBC/IRC roofing provisions with Castle Rock's own amendments on roof covering class, ice barrier, and a shingle-repair permit exemption.
Verified 2026-07-05 · Source
Requirements
- Roof coverings for re-roofs must be Class A, B, or C per IBC Section 1505 (local amendment to Section 723.1.3)
- Ice barrier underlayment required on eaves and valleys for asphalt shingles, metal roof shingles, mineral-surfaced roll roofing, slate/slate-type shingles, and wood shingles/shakes — at least two layers of cemented underlayment or a self-adhering polymer-modified bitumen sheet extending at least 24 inches inside the exterior wall line; exception for detached accessory structures with no conditioned floor area
- Shingle repair or replacement not exceeding one square (100 sq ft) of covering per building is exempt from a permit
- Commercial and residential re-roof permits are billed based on valuation (not a flat fee) per the Town's fee schedule
Required documents
- RequiredPlan Review and Construction Permit Application (eTRAKiT)Submitted electronically via the eTRAKiT Development Portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Commercial and Residential Re-Roof Permit | Based on valuation (standard Building Permit Fee tiers) | Town of Castle Rock Development Services Fee Schedule, effective July 1, 2026 — no flat re-roof fee is published; billed via the same valuation table as new construction |
| Plan Review Fee | 65% of the Building Permit Fee | — |
Demolition Permit
VerifiedRequired for demolition of buildings/structures within Castle Rock. Billed at a flat fee by the Town; asbestos inspection/abatement is governed separately by the Colorado Department of Public Health and Environment (CDPHE), not the Town.
Verified 2026-07-05 · Source
Requirements
- Building/structure demolition requires a Town permit at a flat fee
- Contractor is responsible for ensuring all utilities and fire protection systems are properly disconnected prior to demolition
- A CDPHE-certified asbestos inspection is a separate, statewide (non-Town) requirement for any demolition or renovation in Colorado; contact CDPHE directly for asbestos notification/abatement requirements, which are not administered by the Town's Building Division
Required documents
- RequiredPlan Review and Construction Permit Application (eTRAKiT)Submitted electronically via the eTRAKiT Development Portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Demolition Permit | $100.00 | Town of Castle Rock Development Services Fee Schedule, effective July 1, 2026 |
Fence and Retaining Wall Permit
VerifiedFences 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
Requirements
- 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
- RequiredPlan Review and Construction Permit Application (eTRAKiT)Required only for fences over 6 feet or retaining walls over 4 feet; submitted electronically via eTRAKiT
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee — valuation $0 to $500 (fences/walls requiring a permit) | $23.50 | 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 |
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.