Skip to main content
PermitBase

New Commercial Construction / Commercial Addition / New Mixed-Use (Residential and Commercial) Building Permit in Silverthorne, Colorado

Required for new commercial construction, commercial additions, and new mixed-use (residential and commercial) construction in Silverthorne — a resort/retail town with its own outlet mall and significant commercial development. The Town's own Permit Process by Project Type page publishes three distinct, genuinely commercial application tracks with near-identical submittal packages (New Commercial Construction Building Permit, Commercial Addition Building Permit, and New Mixed Use Construction Building Permit), each with its own SmartGov application link. As with residential permits, the Town of Silverthorne Community Development Department (Planning, Engineering, Water & Sewer) intakes and reviews for Town Code compliance while the Building Department conducts Building Code plan review; the Town's Plan Review page states in general (not residential-specific) terms that 'Summit County Building Department reviews plans and performs inspections for the Town of Silverthorne based on the Building Code most recently adopted by the Town,' consistent with the intergovernmental arrangement documented for every other permit type in this file.

Reviewed 2026-08-02 · Source

When you need this permit

  • Site plan with topographical information; building height table per Town Code definition of building height
  • Water and sewer service line details shown on site plans and mechanical plans
  • Construction management plan; erosion control and grading plan
  • Landscape plan (Town Code Section 4-6-14) including revegetation information and designated snow storage area(s)
  • Tree conservation plan (Town Code Article VIII, Environmental Guidelines)
  • Exterior lighting location on architectural elevations
  • Architectural plans (floor plans, elevations, materials) — MUST BE STAMPED for commercial projects (stamping is not always required for equivalent residential submittals)
  • Elevations with USGS ties for height calculations; structural drawings stamped by a Colorado-licensed architect/engineer including design loads, code versions, and project type; foundation plans; framing plans
  • 2018 IECC (International Energy Conservation Code) paperwork required for commercial projects — a submittal item not present on the residential-building-permit checklist
  • Additional submittal items: landowner authorization; warranty deed if applicable; soils report; structural calculations; affidavit list of changes (for revisions/Town-Council-approved site plans); exterior lighting spec sheet; exterior color/materials
  • Summit Fire & EMS fire mitigation permit required for all new construction and additions; Summit Fire & EMS life-safety/sprinkler permit specifically required for commercial and multi-family properties (a stricter trigger than the residential over-6,000-SF/Eagles-Nest-Filings-1-5 threshold)
  • Summit County Environmental Health sign-off required for food service, schools, and public pools
  • Plan Review: Town of Silverthorne Planning, Engineering, and Water and Sewer Departments review per Town Code; Building Department reviews per Building Code (per the Town's own Plan Review page, this Building Code review/inspection function is performed by the Summit County Building Department Town-wide, not permit-type-specific)

Required documents

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

Not ready yet — 0 of 4 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 FeeTown of Silverthorne Permit Fees page, confirmed 2026-08-02 (live page). The Town publishes ONE Building Permit Fee table — there is no separate/higher commercial-specific valuation table; the same tiers used for residential-building-permit in this file apply.
Same universal valuation-based table used for all Silverthorne building permits: $65.00 for $1-$500, scaling up to $6,370.25 for the first $1,000,000 plus $3.90 per additional $1,000 for valuations over $1,000,001
Plan Review FeeDue at submittal, per both the general Permit Fees page and the New Commercial Construction / Commercial Addition / New Mixed Use accordion pages, confirmed 2026-08-02
65% of the Building Permit Fee
Impact FeePermit Fees page: 'Impact Fee is for all new construction based upon the square footage of the building... due and payable prior to the issuance of a building permit.' Applies to new commercial construction on the same basis as residential; confirm exact rate with the Building Division.
Based on building square footage (exact rate not published)
Stormwater System Development ChargeAppendix A, Public Works Sec. 3-9-5, per the Permit Fees page — worded as applying to 'a building permit for a new building' generally, not restricted to residential; confirmed live 2026-08-02
$0.58 per square foot of impermeable surface (new impervious surface areas over 120 sq ft)
Water and Sewer Tap Fees (EQRs) and Water Meter FeeDue before permit issuance for new construction with new water/sewer service
Per Town Code Sec. 3-2-1 use classification schedule / Ordinance 2026-02
Excise Tax — UNRESOLVED DISCREPANCY, do not assume applicableThe Town's general Permit Fees page states explicitly: 'Excise Tax is $2.00 per square foot which includes living space, unfinished space and garage. The fee is for new residential construction.' The New Commercial Construction Building Permit accordion page (pure commercial, no residential component) does NOT list an Excise Tax Fee among fees due at submittal, consistent with the residential-only description. However, the Commercial Addition Building Permit AND New Mixed Use Construction (Residential and Commercial) Building Permit accordion pages BOTH list an 'Excise Tax Fee' under 'Application Fees Due at Submittal' — a direct textual conflict with the general Permit Fees page's residential-only framing (New Mixed Use plausibly applies it only to the residential portion of the project, but the page text does not say so explicitly, and Commercial Addition has no residential component at all). This could not be resolved from published sources alone; confirm directly with the Building Division (970-262-7360) whether Excise Tax applies to a specific commercial or mixed-use project before budgeting for it.
Not confirmed for pure commercial construction

Review timeline

Plan review
Not published — contact the department

How long did your New Commercial Construction / Commercial Addition / New Mixed-Use (Residential and Commercial) Building 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

    Foundation / Footing

    Performed by the Building Department that reviewed and approved the plans (Summit County Building Department per the Town-wide intergovernmental arrangement)

  2. 2

    Framing

    Per the same review-and-inspect department as plan review

  3. 3

    Final Inspection (Town Engineering, Water/Sewer, Planning, plus Building Code final)

    The department that reviewed and approved the building permit plans also conducts the final inspections prior to CO/Completion. Building inspection requests via SmartGov portal by 4 p.m. the day before the desired inspection (NOTE: this commercial-permit-process page states 4 p.m., while other entries in this file for residential permits state 5 p.m. as the SmartGov cutoff — an unresolved discrepancy between pages, flagged rather than silently reconciled). Town-specific final inspections (Engineering/Water-Sewer/Planning) must be emailed to buildinginfo@silverthorne.org at least 48 hours in advance.

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

Tips

  • Silverthorne publishes three separate commercial-track application links with nearly identical submittal packages — New Commercial Construction, Commercial Addition, and New Mixed Use Construction — apply under the correct one for your project type.
  • Commercial projects require STAMPED architectural plans plus 2018 IECC energy-code paperwork, both of which are not listed as requirements on the equivalent residential submittal checklists in this file.
  • The Excise Tax fee's applicability to commercial and mixed-use projects is genuinely ambiguous across the Town's own published pages — the general Permit Fees page restricts it to residential construction, but the Commercial Addition and New Mixed Use accordion pages both list it as a fee due at submittal. Confirm directly with the Building Division before budgeting.
  • Life-safety/sprinkler permits from Summit Fire & EMS are required for ALL commercial and multi-family properties (not just large or specific-subdivision properties as under the residential threshold) — budget for this outside-agency step on every commercial project.

Frequently asked questions

Silverthorne requires a new commercial construction / commercial addition / new mixed-use (residential and commercial) building permit for: Site plan with topographical information; building height table per Town Code definition of building height; Water and sewer service line details shown on site plans and mechanical plans; Construction management plan; erosion control and grading plan; Landscape plan (Town Code Section 4-6-14) including revegetation information and designated snow storage area(s); Tree conservation plan (Town Code Article VIII, Environmental Guidelines); Exterior lighting location on architectural elevations; Architectural plans (floor plans, elevations, materials) — MUST BE STAMPED for commercial projects (stamping is not always required for equivalent residential submittals); Elevations with USGS ties for height calculations; structural drawings stamped by a Colorado-licensed architect/engineer including design loads, code versions, and project type; foundation plans; framing plans; 2018 IECC (International Energy Conservation Code) paperwork required for commercial projects — a submittal item not present on the residential-building-permit checklist; Additional submittal items: landowner authorization; warranty deed if applicable; soils report; structural calculations; affidavit list of changes (for revisions/Town-Council-approved site plans); exterior lighting spec sheet; exterior color/materials; Summit Fire & EMS fire mitigation permit required for all new construction and additions; Summit Fire & EMS life-safety/sprinkler permit specifically required for commercial and multi-family properties (a stricter trigger than the residential over-6,000-SF/Eagles-Nest-Filings-1-5 threshold); Summit County Environmental Health sign-off required for food service, schools, and public pools; Plan Review: Town of Silverthorne Planning, Engineering, and Water and Sewer Departments review per Town Code; Building Department reviews per Building Code (per the Town's own Plan Review page, this Building Code review/inspection function is performed by the Summit County Building Department Town-wide, not permit-type-specific). If your project isn't listed, confirm with Town of Silverthorne Community Development Department, Building Division at 970-262-7360 before starting work.

No. Commercial building permits use the same universal valuation-based Building Permit Fee table published on the Town's Permit Fees page as residential permits — there is no commercial-specific fee schedule. The Plan Review Fee (65% of the permit fee), Impact Fee, and Stormwater System Development Charge all apply on the same basis as residential new construction.

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: Commercial Building Permit Application (SmartGov Portal); Stamped Architectural and Structural Plans; 2018 IECC Paperwork; Construction Management Plan. See the required-documents checklist on this page for details on each.

Silverthorne requires 3 inspection(s) for a new commercial construction / commercial addition / new mixed-use (residential and commercial) building permit, in order: Foundation / Footing, Framing, Final Inspection (Town Engineering, Water/Sewer, Planning, plus Building Code final). 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 Permit Process by Project Type page publishes three genuinely distinct commercial application tracks — New Commercial Construction, Commercial Addition, and New Mixed Use (Residential and Commercial) Construction — each with stamped-plan and 2018 IECC energy-code requirements not present on residential submittals.

This one’s complicated · Get an expediter

Tell us about your project and we’ll connect you with a permit expediter who works in Silverthorne.

PermitBase may receive a referral fee from the expediter. This is a service introduction, not verified permit data or legal advice.

Other permits in Silverthorne

New Residential Construction Building Permit (SFR Attached and Detached)Residential Addition / Remodel Building PermitElectrical PermitResidential Plumbing PermitResidential Mechanical / HVAC PermitAccessory Dwelling Unit / Single Apartment Building PermitDemolition PermitRetaining Wall (Standalone) PermitSolar Photovoltaic (PV) PermitEV Charger / EVSE PermitCommercial Remodel / Tenant Improvement Permit (Tenant Finish/Improvement, Landlord Work, White Box, Core and Shell, Change in Use)

New Commercial Construction / Commercial Addition / New Mixed-Use (Residential and Commercial) Building Permit in other cities

Akron, ColoradoAlamosa, ColoradoAspen, ColoradoAvon, ColoradoBasalt, ColoradoBreckenridge, ColoradoBroomfield, ColoradoCalhan, Colorado

Compare new commercial construction / commercial addition / new mixed-use (residential and commercial) building permit fees across Colorado →

Look up this fee in a different city →

Embed this data card →

Now live

Build your Silverthorne project checklist

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

Get started →