Commercial Compliance Hub
Check requirements

Jefferson County

Jefferson County Division of Building Safety

In short

Jefferson County Division of Building Safety issues 2 permits we publish for Jefferson County, last verified 2026-10-10. Each carries the fee as the agency publishes it, with a link to the schedule it was read from.

What this agency issues

Permits required, with issuing agency, fee, renewal term and the date each record was last verified against its source
Building Contractor License (unincorporated county)Jefferson County Division of Building Safety$50 per license, every class, for 12 calendar months12 calendar months from issuance; a new license may be applied for up to 3 calendar months before expiry2026-10-10
Building Permit and Plan Review (unincorporated county)only if it applies to youJefferson County Division of Building SafetyBy total valuation: $1-$1,000 $55; $1,001-$2,000 $70; $2,001-$40,000 $69 for the first $2,000 + $11 per additional $1,000; $40,001-$100,000 $487 + $9 per additional $1,000; $100,001-$500,000 $1,027 + $7; $500,001-$1,000,000 $3,827 + $5; $1,000,001-$5,000,000 $6,327 + $3; over $5,000,000 $18,327 + $1 per additional $1,000. Plan review 65% of the permit fee. Temporary certificate of occupancy $750; reinspection and after-hours inspection $100 an hour; demolition permit $30; work begun before permit issuance pays an additional fee equal to the permit fee.per permit, for the project2026-10-10

Fees shown as a range or formula are set that way by the issuing agency — we do not average them into a single number.

About each permit

Building Contractor License (unincorporated county)

The county's Building Contractor Licensing policy (Resolution CC26-144, effective June 9, 2026) requires anyone engaged in the business of building contracting in unincorporated Jefferson County to hold a license from the Division of Building Safety before doing so. Table 1 of the policy sets a $50 fee for every class: Class A, B and C Contractor, Roofing, Class A, B and C Mechanical, and Specialty. Licenses run for 12 calendar months from issuance, are not transferable, and a new license may be applied for up to three months before expiry. Applicants must have passed the applicable ICC exam within the past 3 years, or hold a valid license from an ICC participating jurisdiction, according to the county's Contractor Licensing page. The policy excludes state-licensed electricians and plumbers working within their license, and lets a property owner act as contractor on one residential dwelling in any 24-month period.

Building Permit and Plan Review (unincorporated county)

Building, electrical, mechanical and plumbing work for a business premises in unincorporated Jefferson County needs a permit from the Division of Building Safety; the 2024 Jefferson County building code supplements apply to all unincorporated areas of the county. The permit fee follows the total valuation of the work: $55 up to $1,000, $70 for $1,001 to $2,000, then $69 plus $11 per additional $1,000 to $40,000, $487 plus $9 per $1,000 to $100,000, $1,027 plus $7 to $500,000, $3,827 plus $5 to $1,000,000, $6,327 plus $3 to $5,000,000, and $18,327 plus $1 per $1,000 above that. Plan review is 65 percent of the permit fee (capped at $100 for one- and two-family alterations under $75,000). A temporary certificate of occupancy costs $750, reinspections and after-hours inspections $100 an hour, a demolition permit $30, and work begun before the permit is issued pays an additional fee equal to the permit fee. The figures are from the Building Permit Fee Schedule in the '2024 Jefferson County Building Code Supplements, Fee Schedule and Fee Refund Procedure Effective 7-1-26' (pages 55-56), which the Board of County Commissioners approved on March 31, 2026 for permits applied for as of July 1, 2026.

Contact

Jurisdiction
Jefferson County
Phone
303-271-8260

Contact details are taken from the agency’s own site or its published fee schedule. Where we have not verified a phone number we leave it blank rather than guess.

Sources

Every fee and term above was read from one of these government pages on the date shown.

  1. 2024 Jefferson County Building Code Supplements, Fee Schedule and Fee Refund Procedure — Effective 7-1-26Jefferson County Division of Building Safety · primary source · retrieved 2026-10-10
  2. Building Contractor Licensing policy (Resolution CC26-144, effective June 9, 2026)Jefferson County Board of County Commissioners · primary source · retrieved 2026-10-10
  3. Building Safety page (code and fee schedule approved March 31, 2026, in effect for permits applied for as of July 1, 2026)Jefferson County Division of Building Safety · primary source · retrieved 2026-10-10
  4. Building Safety Regulation UpdatesJefferson County Division of Building Safety · primary source · retrieved 2026-10-10
  5. Contractor Licensing pageJefferson County Division of Building Safety · primary source · retrieved 2026-10-10

Other offices serving Jefferson County

The full permit list for this jurisdiction

Industry permit lists that include this agency

Colorado jurisdictions

Commercial Compliance Hub publishes information, not legal advice. Requirements change — confirm anything you rely on with the issuing agency before you file.