New Single-Family Dwelling, Duplex, or Townhouse Building Permit in Town of Carbondale, Colorado

Town of Carbondale requires a new single-family dwelling, duplex, or townhouse building permit for: New single-family dwelling, duplex, or townhouse construction within Town of Carbondale limits; Compliance with the Town-adopted 2021 IRC/IBC and IECC (Tier-classification blower-door and duct-leakage requirements apply); Site plan review is not required for a single-family residence but is required for most other development types; Shading Analysis, Impervious Surface Calculations, and a Homeowner Agreement for Permitting (if applicable) as part of the submittal packet. If your project isn't listed, confirm with Town of Carbondale Building Department at 970-963-2733 (Town Hall); Inspection line 970-510-1210 (call by 5:00 PM the business day prior to the requested inspection) before starting work.

In Town of Carbondale, the published Building Permit Fee — $1.00 to $500.00 valuation is: $27.50. Additional published fees: Building Permit Fee — $501.00 to $2,000.00 valuation — $27.50 for the first $500.00 plus $3.60 for each additional $100.00 or fraction thereof; Building Permit Fee — $2,001.00 to $25,000.00 valuation — $80.25 for the first $2,000.00 plus $16.30 for each additional $1,000.00 or fraction thereof; Building Permit Fee — $25,001.00 to $50,000.00 valuation — $456.75 for the first $25,000.00 plus $11.75 for each additional $1,000.00 or fraction thereof; Building Permit Fee — $50,001.00 to $100,000.00 valuation — $745.50 for the first $50,000.00 plus $8.15 for each additional $1,000.00 or fraction thereof; Building Permit Fee — $100,001.00 to $500,000.00 valuation — $1,150.00 for the first $100,000.00 plus $6.55 for each additional $1,000.00 or fraction thereof; Building Permit Fee — $500,001.00 to $1,000,000.00 valuation — $3,738.00 for the first $500,000.00 plus $5.55 for each additional $1,000.00 or fraction thereof; Building Permit Fee — $1,000,001.00 and up valuation — $6,480.00 for the first $1,000,000.00 plus $4.30 for each additional $1,000.00 or fraction thereof; Plan Review Fee — 65% of the Building Permit Fee; Town of Carbondale Use Tax — Declared construction material value x 3.5%. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Per the Town's own published Estimated Building Permit Review Times table, a New Single-Family Dwelling or Duplex (and New Townhouse Building) carries a combined estimate of 1 week Administrative Review + 2 weeks Planning Department Review + 4 weeks Building Department Review, totaling 7 weeks, once the application is deemed complete. Extended timelines can occur for incomplete or non-compliant submittals.

You'll need: Building Permit Application; Building Permit Checklist; Impervious Surface Calculations Table. Depending on your project, Town of Carbondale may also ask for: Shading Analysis; Homeowner Agreement For Permitting. See the required-documents checklist on this page for details on each.

Town of Carbondale requires 3 inspection(s) for a new single-family dwelling, duplex, or townhouse building permit, in order: Footing/Foundation, Framing, Final. Schedule each through Town of Carbondale Building Department (970-963-2733 (Town Hall); Inspection line 970-510-1210 (call by 5:00 PM the business day prior to the requested inspection)).

Apply through Town of Carbondale Building Department at 511 Colorado Avenue, Carbondale, CO 81623. Phone: 970-963-2733 (Town Hall); Inspection line 970-510-1210 (call by 5:00 PM the business day prior to the requested inspection), email: msikes@carbondaleco.net (Mary Sikes — submit all application documentation in one email as PDF attachments, with the property address in the subject line). Office hours: Town Hall: Monday-Friday, 8:00 AM to 5:00 PM. Fax: 970-963-9140.. Official information: https://www.carbondalegov.org/departments/building/.

Town of Carbondale, Colorado has adopted: 2021 IBC (International Building Code), adopted by Ordinance No. 3/2025 amending Chapter 18 of the Carbondale Municipal Code, effective 7-1-2025, per the Town's Building Department page (carbondalegov.org/departments/building/).; 2021 IRC (International Residential Code), effective 7-1-2025, per the same ordinance.; 2021 IPC (International Plumbing Code), effective 7-1-2025.; 2021 IMC (International Mechanical Code), effective 7-1-2025.; 2021 IECC (International Energy Conservation Code), effective 7-1-2025.; 2021 IEBC (International Existing Building Code), effective 7-1-2025.; 2021 IFGC (International Fuel Gas Code), effective 7-1-2025.; 2021 ISPSC (International Swimming Pool and Spa Code), effective 7-1-2025.; The most current electrical code adopted by the State of Colorado (Carbondale does not maintain its own separately-numbered local electrical code amendment; electrical permitting and inspection in Carbondale is handled by the Colorado State Electrical Board, not the Town — see the 'electrical-permit' entry below).; 2021 IFC (International Fire Code) and the 2025 Colorado Wildfire Resiliency Code (rendered 'CWFC' on the Town's own Building page, elsewhere labeled 'CWRC' and cross-referenced to Municipal Code Article 14) — both became effective 7-1-2026 per the Town's Building Department page, which as of this file's verification date is already in effect (the page's own text is still phrased as 'WILL BE EFFECTIVE 7-1-2026', but that date has now passed).. Local amendments apply — see the Town of Carbondale overview page for the full list.