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Retaining Wall (Standalone) Permit in Silverthorne, Colorado

Required for standalone retaining walls (commercial or residential) in Silverthorne. The Town's Permit Process page publishes a dedicated Retaining Walls (Standalone) permit type; it does not publish a separate stand-alone fence permit type distinct from general building-permit review.

Verified 2026-07-13 · Source

When you need this permit

  • Retaining wall stamped plans
  • Retaining wall spec sheet demonstrating what the wall will look like
  • Geotechnical engineering study stamped by a licensed professional engineer
  • Written approval from landlord if applicable; HOA approval if applicable
  • Plan Review: Town of Silverthorne Planning and Engineering Departments review per Town Code; Summit County Building Department conducts Building Code plan review
  • No standalone Town-published fence-specific permit page was found distinct from the general building permit process; fence projects should be confirmed directly with the Building Division at (970) 262-7360 as to whether they require a standalone permit or fall under a different permit category

Required documents

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Fee schedule

Plan Review FeeDue at submittal
65% of the Building Permit Fee
Building Permit Fee (valuation-based)Due before permit issuance. Town of Silverthorne Permit Fees page, re-verified 2026-07-13 (supersedes the $23.50 minimum recorded 2026-07-06)
$65.00 minimum, scaling per the Town's general valuation tiers

Review timeline

Plan review
Not published — contact the department

How long did your Retaining Wall (Standalone) Permit permit actually take in Silverthorne?

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

Inspection process

  1. 1

    Final Inspection

    Wall height, location, and geotechnical/engineering compliance verified by Summit County Building Department

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

Tips

  • A stamped geotechnical engineering study is required for standalone retaining walls in Silverthorne — budget for a geotechnical engineer, not just a structural engineer, on any wall project.
  • Fence-specific permitting was not found as its own published category on the Town's site — confirm with the Building Division whether a planned fence needs a standalone permit or falls under a different review path before assuming it is exempt.

Frequently asked questions

Silverthorne requires a retaining wall (standalone) permit for: Retaining wall stamped plans; Retaining wall spec sheet demonstrating what the wall will look like; Geotechnical engineering study stamped by a licensed professional engineer; Written approval from landlord if applicable; HOA approval if applicable; Plan Review: Town of Silverthorne Planning and Engineering Departments review per Town Code; Summit County Building Department conducts Building Code plan review; No standalone Town-published fence-specific permit page was found distinct from the general building permit process; fence projects should be confirmed directly with the Building Division at (970) 262-7360 as to whether they require a standalone permit or fall under a different permit category. If your project isn't listed, confirm with Town of Silverthorne Community Development Department, Building Division at 970-262-7360 before starting work.

In Silverthorne, the published Plan Review Fee is: 65% of the Building Permit Fee. Additional published fees: Building Permit Fee (valuation-based) — $65.00 minimum, scaling per the Town's general valuation tiers. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Silverthorne does not publish a plan-review timeline for this permit. Contact Town of Silverthorne Community Development Department, Building Division at 970-262-7360 for current turnaround.

You'll need: Retaining Wall Permit Application (SmartGov Portal); Geotechnical Engineering Study. See the required-documents checklist on this page for details on each.

Silverthorne requires 1 inspection(s) for a retaining wall (standalone) permit, in order: Final Inspection. Schedule each through Town of Silverthorne Community Development Department, Building Division (970-262-7360).

Apply through Town of Silverthorne Community Development Department, Building Division at 601 Center Circle, P.O. Box 1309, Silverthorne, CO 80498. Phone: 970-262-7360, email: buildinginfo@silverthorne.org. Office hours: Monday through Friday, 8 a.m. to 5 p.m.; building permit submittal appointments required (per Community Development FAQ). Town Hall main line (970) 262-7300; Community Development/Building direct line (970) 262-7360. Electrical permits are handled separately by the Summit County Building Department, 0037 Peak One Drive / 37 S.C.R. 1005, Frisco, CO, (970) 668-3170.. Official information: https://www.silverthorne.org/town-government/community-development/building-copy.

Silverthorne, Colorado has adopted: 2018 International Building Code (IBC), with Town of Silverthorne local amendments — Town of Silverthorne Building Codes & Amendments page, https://www.silverthorne.org/town-government/community-development/building-copy/building-codes-construction-resources; 2018 International Fire Code (IFC), with Town of Silverthorne local amendments — same source; 2023 NFPA 70 National Electrical Code (NEC), adopted by Town Ordinance 2023-10 — the Town's own Building Codes & Amendments page attributes this specific adoption to the Summit County Building Department ('Ordinance 2023-10 2023 NFPA70 National Electrical Code Adoption - from the Summit County Building Department'), consistent with Summit County issuing and governing all electrical permits Town-wide; Underlying building-code plan review and inspection for all permit types is performed by the Summit County Building Department 'based on the Building Code most recently adopted by the Town' — Town of Silverthorne Plan Review page, https://www.silverthorne.org/town-government/community-development/building-copy/resubmittals-and-revisions; IRC Section 321.1 as locally amended (temporary/permanent address numbering requirements) and IBC Sections 105.4, 105.6, 109.1, 109.5, 109.7, 104.10, 104.11, and 3402.1 as locally amended (administrative provisions: permit suspension/revocation, inspection access, reinspection fees, code-modification authority, alternate materials/methods, and additions/alterations conforming to new-construction code) — Town of Silverthorne Building Codes & Construction Resources page, General Requirements / Administrative Requirements sections. Local amendments apply — see the Silverthorne overview page for the full list.

Yes. The Town's Retaining Walls (Standalone) permit requires a geotechnical engineering study stamped by a licensed professional engineer, in addition to stamped retaining wall plans and a spec sheet.

Sources & verification

Verified against official sources. Last reviewed 2026-07-13.

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

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Retaining Wall (Standalone) Permit in other cities

Alamosa, ColoradoAspen, ColoradoBasalt, ColoradoBroomfield, ColoradoCañon City, ColoradoCastle Rock, ColoradoCommerce City, ColoradoCortez, Colorado

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