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Fence / Retaining Wall Permit in Louisville, Colorado

Required for fence and retaining wall construction in Louisville. Classified under 'Other Permits' on the review-time table, and subject to the Fire Hardening Code's Class A fire-resistance requirement for fencing within 5 feet of a structure.

Verified 2026-07-05 · Source

When you need this permit

  • 'Minor Permit: Fence' and 'Minor Permit: Retaining Wall' are both listed under the Other Permits category on the Permit Information page
  • Fencing within 5 feet of the home or commercial building must be Class A fire/ignition-resistant (ASTM E84 or UL 723) per the Louisville Fire Hardening Code — treated materials are not allowed unless the treatment maintains its Class A rating for the material's life without reapplication, OR an inherently ignition-resistant material (metal, masonry, stone) must be used
  • Foundation Setback Certification may be required for retaining walls per the Permit Information page's plan-review documents list

Required documents

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Fee schedule

Permit fee — valuation-based (Building Permit Fee Table)No fence/wall-specific flat fee is published; billed under the general Building Permit Fee Table
$28.00 minimum, scaling per valuation tiers
Boulder County Use Tax
1.185% of 50% of Total Valuation
City of Louisville Use Tax
3.775% of 50% of Total Valuation

Review timeline

Plan reviewLouisville’s published plan-review target
5–10 business days

How long did your Fence / Retaining Wall Permit permit actually take in Louisville?

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

Inspection process

  1. 1

    Final Inspection

    Height, location relative to property line/setback, and (within 5 ft of a structure) Fire Hardening Code Class A material compliance verified

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

Tips

  • Any fence within 5 feet of a structure in Louisville must meet the Fire Hardening Code's Class A fire-resistance standard — this is a citywide rule, not limited to a mapped wildfire zone, and applies regardless of fence height.
  • Treated wood is generally not compliant for the 5-foot fire-hardening zone unless the specific treatment is rated to maintain Class A performance for the life of the material without reapplication — metal, masonry, or stone are the simpler compliant choices.

Frequently asked questions

Louisville requires a fence / retaining wall permit for: 'Minor Permit: Fence' and 'Minor Permit: Retaining Wall' are both listed under the Other Permits category on the Permit Information page; Fencing within 5 feet of the home or commercial building must be Class A fire/ignition-resistant (ASTM E84 or UL 723) per the Louisville Fire Hardening Code — treated materials are not allowed unless the treatment maintains its Class A rating for the material's life without reapplication, OR an inherently ignition-resistant material (metal, masonry, stone) must be used; Foundation Setback Certification may be required for retaining walls per the Permit Information page's plan-review documents list. If your project isn't listed, confirm with City of Louisville Building Safety Division at (303) 335-4584 before starting work.

In Louisville, the published Permit fee — valuation-based (Building Permit Fee Table) is: $28.00 minimum, scaling per valuation tiers. Additional published fees: Boulder County Use Tax — 1.185% of 50% of Total Valuation; City of Louisville Use Tax — 3.775% of 50% of Total Valuation. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Louisville's published plan-review target for a fence / retaining wall permit is 5–10 business days.

You'll need: Fence/Retaining Wall Permit Application (CSS Online Portal); Site Plan. See the required-documents checklist on this page for details on each.

Louisville requires 1 inspection(s) for a fence / retaining wall permit, in order: Final Inspection. Schedule each through City of Louisville Building Safety Division ((303) 335-4584).

Apply through City of Louisville Building Safety Division at City Hall, 749 Main St, Louisville, CO 80027. Phone: (303) 335-4584, email: building@louisvilleco.gov. Office hours: Monday-Thursday 8AM-4PM (in-person; remote 4PM-5PM); Friday 8AM-5PM remote/by appointment only; Tuesday 11AM-12PM limited staff availability (staff meeting). Inspection hours Monday-Friday 6:30AM-5PM.. Official information: https://www.louisvilleco.gov/local-government/government/departments/building-safety.

Louisville, Colorado has adopted: 2024 International Building Code (IBC), effective 12/6/2025 — City of Louisville Building Codes page; 2024 International Residential Code (IRC), effective 12/6/2025; 2024 International Energy Conservation Code (IECC), effective 12/6/2025; 2024 International Fire Code (IFC), effective 12/6/2025; 2024 International Plumbing Code (IPC), effective 12/6/2025; 2024 International Fuel Gas Code (IFGC), effective 12/6/2025; 2024 International Mechanical Code (IMC), effective 12/6/2025; 2024 International Existing Building Code (IEBC), effective 12/6/2025; 2024 International Property Maintenance Code (IPMC), effective 12/6/2025; 2023 National Electrical Code (NEC), effective 1/5/2024; local amendment NEC 210.8(F) Exception #2 takes effect 9/1/2026 requiring GFCI protection on all new outdoor A/C units; 1997 Uniform Code for the Abatement of Dangerous Buildings, effective 12/6/2025; 1997 Uniform Housing Code, effective 12/6/2025; Colorado Model Electric Ready and Solar Ready Code, effective 12/6/2025; Louisville Fire Hardening Code — Ordinance 1884 (series 2024), updated by Ordinance 1891 (series 2025) and Emergency Ordinance 1913 (series 2026, effective 1/21/2026) — sets minimum fire-resistant construction standards for new construction, accessory structures, and repair/replacement of specific home systems (roofing, siding, decks, fencing, vents, gutters) to reduce wildfire spread risk; applies citywide, not limited to a mapped WUI zone; Louisville Municipal Code Chapter 15 — Buildings and Construction (local amendments and adoption-by-reference); Louisville Municipal Code Chapter 5.12 (Section 5.12.090) — Contractor Licensing: any contractor employed on a building project must be licensed with the City of Louisville and listed on the permit; Prior to 12/6/2025 the City operated under the 2018 ICC codes; the 2024 ICC code adoption ordinance and effective date are confirmed on the City's Building Codes page. Local amendments apply — see the Louisville overview page for the full list.

If the fence is within 5 feet of the home or commercial building, yes — the Louisville Fire Hardening Code requires a Class A fire/ignition-resistant rating (ASTM E84 or UL 723) for that fencing, citywide.

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

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Fence / Retaining Wall Permit in other cities

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