Skip to main content
PermitBase

Residential Building Permit (New Construction) in Castle Rock, Colorado

Required 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

When you need this permit

  • 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 Owner-builderContractor

Required documents

Check off what you have — your progress is saved on this device.

Not ready yet — 0 of 3 required documents checked.

This checker covers one permit. A full project usually triggers several — our paid checklist will assemble all of them, from $29 →

Fee schedule

Building Permit Fee — valuation $0 to $500Town of Castle Rock Development Services Fee Schedule, effective July 1, 2026
$23.50
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 FeeFee Schedule effective July 1, 2026
65% of the Building Permit Fee (not of valuation); $300 flat for tract homes with an approved Master Plan
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 VBTown of Castle Rock Building Valuation Table, effective July 1, 2026, based on ICC August 2016 Building Valuation Data
$170.80 per sq ft (Type VB); rates vary $170.80-$218.08/sq ft by construction type IA-VB

Review timeline

Plan reviewCastle Rock’s published plan-review target
21–21 business days

How long did your Residential Building Permit (New Construction) 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

    Foundation

    Before concrete pour; must be inspected/reported by a Colorado-licensed professional engineer or registered architect per local amendment R109.1.1.1, in addition to the Town's own foundation inspection

  2. 2

    Framing

    Structural framing per 2024 IRC and approved plans

  3. 3

    Electrical Rough-In

    Verifies wiring, panel capacity, and — where a solar-ready zone is installed — conduit/prewiring from the solar-ready zone to the electrical panel (local amendment R105.2.4.1)

  4. 4

    Insulation and Fenestration Rough-In

    Verifies insulation types/R-values and fenestration U-factors before interior finish, per local amendment R105.2.4.2

  5. 5

    Final

    All work complete, ready for Certificate of Occupancy

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

Tips

  • Castle Rock runs its OWN Building Division — it is a separate prequalified department from Douglas County, confirmed via the Colorado DFPC prequalified building departments list. Do not assume Douglas County handles Castle Rock permits.
  • Snow load is elevation-tiered and explicitly non-reducible: confirm your parcel's exact elevation against the 30/35/40 psf bands (6,000 ft and 6,500 ft are the break points).
  • Ice barrier underlayment is mandatory town-wide (not just above a certain elevation, unlike some Front Range jurisdictions) for most standard roofing materials, except on unconditioned detached accessory structures.

Frequently asked questions

Castle Rock requires a residential building permit (new construction) for: 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. 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 is: $23.50. Additional published fees: 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; 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. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Castle Rock's published plan-review target for a residential building permit (new construction) is 21–21 business days.

You'll need: Plan Review and Construction Permit Application (eTRAKiT); Construction Drawings; Site Plan. Depending on your project, Castle Rock may also ask for: Homeowner Affidavit. See the required-documents checklist on this page for details on each.

Castle Rock requires 5 inspection(s) for a residential building permit (new construction), in order: Foundation, Framing, Electrical Rough-In, Insulation and Fenestration Rough-In, 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.

If your property is within Castle Rock town limits, the Town's own Development Services Building Division issues the permit — Douglas County is a separate prequalified building department that does not have jurisdiction inside the Town. Source: Colorado DFPC Prequalified Building Departments list.

A minimum of 30 psf for all elevations below 6,000 feet, 35 psf for 6,000-6,499 feet, and 40 psf for 6,500-7,000 feet, per the Town's amendment to IRC Section 1608.1/R301.2(1). This value is not reducible. 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.

Other permits in Castle Rock

Residential Addition / Remodel / Basement Finish PermitElectrical PermitPlumbing PermitMechanical / HVAC PermitRoofing Permit (Re-Roof)Demolition PermitSolar Photovoltaic (PV) PermitFence and Retaining Wall PermitEV Charger / EVSE Permit

Residential Building Permit (New Construction) in other cities

Akron, ColoradoAlamosa, ColoradoArvada, ColoradoAspen, ColoradoAult, ColoradoAurora, ColoradoAvon, ColoradoBasalt, Colorado

Compare residential building permit (new construction) fees across Colorado →

Look up this fee in a different city →

Embed this data card →

Now live

Build your Castle Rock project checklist

Describe your project once and get every permit, document, and fee it triggers in Castle Rock — in one checklist. Sign up and pay once to generate it, or go unlimited with Pro.

Get started →