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Demolition Permit in Thornton, Colorado

Required for demolition of structures in Thornton. Processed through the City Development Building Inspection Division at a flat published fee.

Verified 2026-06-30 · Source

When you need this permit

  • Demolition permit required for removal of structures
  • Utility disconnects (gas, electric, water, sewer) must be verified or arranged prior to demolition
  • A demolition permit is required first if an existing structure is being removed to make way for a new deck, patio cover, or other new construction
  • Applications submitted via the CityView Portal

Required documents

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Fee schedule

Demolition Permit (flat fee)City of Thornton 2026 Building Permit Fee Schedule — 'Miscellaneous Fees' section
$50.00

Review timeline

Plan reviewTypical estimate — confirm current times with the Thornton building department
~0–13 business days

How long did your Demolition Permit permit actually take in Thornton?

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

Inspection process

  1. 1

    Pre-Demolition Utilities Verification

    Verification that gas, electric, water, and sewer are disconnected before demolition begins

  2. 2

    Final

    Site cleared per approved permit scope

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

Tips

  • At $50.00 flat, Thornton's demolition permit fee is notably lower than the valuation-based building permit fee structure used for most other permit types.
  • Verify utility disconnects with the relevant utility providers before scheduling demolition — the City's permit process references this as a prerequisite step.

Frequently asked questions

Thornton requires a demolition permit for: Demolition permit required for removal of structures; Utility disconnects (gas, electric, water, sewer) must be verified or arranged prior to demolition; A demolition permit is required first if an existing structure is being removed to make way for a new deck, patio cover, or other new construction; Applications submitted via the CityView Portal. If your project isn't listed, confirm with City of Thornton — City Development, Building Inspection Division at 303-538-7250 before starting work.

A demolition permit in Thornton is a flat $50.00 fee, per the City's 2026 Building Permit Fee Schedule.

Plan review for a demolition permit in Thornton typically runs 0–13 business days. This is an estimate, not a published figure — confirm current review times with City of Thornton — City Development, Building Inspection Division at 303-538-7250.

You'll need: Demolition Permit Application (CityView Portal). See the required-documents checklist on this page for details on each.

Thornton requires 2 inspection(s) for a demolition permit, in order: Pre-Demolition Utilities Verification, Final. Schedule each through City of Thornton — City Development, Building Inspection Division (303-538-7250).

Apply through City of Thornton — City Development, Building Inspection Division at 9500 Civic Center Drive, Thornton, CO 80229. Phone: 303-538-7250, email: buildings@thorntonco.gov. Office hours: Mon–Fri, 8:00 a.m.–5:00 p.m. (counter payments 8:00 a.m.–4:30 p.m.). Official information: https://www.thorntonco.gov/business-development/city-development/building-permits-inspections.

Thornton, Colorado has adopted: 2024 International Building Code (IBC) — with Thornton amendments; adopted by ordinance May 13, 2025, effective July 1, 2025 (replaced the 2021 IBC); 2024 International Residential Code (IRC) — with Thornton amendments (Table R301.2 climatic/geographic design criteria repealed and reenacted with Thornton-specific values); effective July 1, 2025; 2024 International Plumbing Code (IPC) — with Thornton amendments; effective July 1, 2025; 2024 International Mechanical Code (IMC) — with Thornton amendments; effective July 1, 2025; 2024 International Fuel Gas Code (IFGC) — with Thornton amendments; effective July 1, 2025; 2024 International Energy Conservation Code (IECC) — adopted in full (residential provisions); includes Colorado Model Electric Ready and Solar Ready Code per HB22-1362; effective July 1, 2025; 2024 International Existing Building Code (IEBC) — with Thornton amendments; effective July 1, 2025; 2024 International Swimming Pool and Spa Code (ISPSC) — adopted by reference; effective July 1, 2025; 2023 National Electrical Code (NEC) / NFPA 70 — Thornton adopts the NEC edition currently adopted by the State of Colorado automatically and simultaneously (Thornton City Code Sec. 10-162); matches the statewide electrical code; 2021 editions of the above I-Codes and the 2017 NEC — the prior code cycle, superseded for new submittals as of July 1, 2025 but referenced for projects permitted under it (e.g., the city's 2023-dated Solar PV submittal-requirements handout still cites 2020 NEC/2021 IRC/2021 IBC/2021 IFC and should be read as superseded by the current 2024/2023 code cycle for design-code citations). Local amendments apply — see the Thornton overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-06-30.

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 Thornton building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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Demolition Permit in other cities

Alamosa, ColoradoArvada, ColoradoAspen, ColoradoAult, ColoradoAurora, ColoradoBennett, ColoradoBerthoud, ColoradoBoulder, Colorado

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