Development Engineering

The City of Thornton, through its Development Engineering Division, is responsible for plan reviews, inspections and permitting for infrastructure and landscape improvements for commercial and residential projects.

Note: For information on projects being constructed by the City or operations and maintenance on City facilities, go to the Infrastructure Engineering Services page.

General

• Standards and Specifications
  All contractors doing work in the City are required by code to have a copy of the most current version of these specs and to perform all work in accordance with them.
• City of Thornton Code
  All sections of City Code.
  • Chapter 18 - Development Code
  • Chap. 62-60 to 62-69 - Reimbursement Ordinance
  • Chapter 70 - Streets and Sidewalks
  • Chapter 74 - Utilities
• Development Checklist
  Excel Spreadsheet format. Not an official checklist — for information only. For as-built information, contact Alfonso Lopez at 303-538-7694.
• Subdivision Plats
  For more information, contact the City Development Department at 303-538-7295
• Current Development Projects
  A map of all current projects.

City of Thornton Plat Template

• Cost Estimate Spreadsheet
• Plat Template (DWG Format AutoCAD 2000 or greater)
• Plat Template

Construction and Traffic Control Permit
(Section 100)

• General Permit Information and Forms
  
  
  • Construction Permit Application Form (online application)
  • Traffic Permit Application Form (online application)

Water (Section 200) and
Sewer (Section 300)

• Water and Sewer Connection Fees
  
  
  • Fire Flow Requests - contact the Fire Marshal at 303-538-7602
  • Static Pressure Requests - e-mail request to Alfonso Lopez (include detailed description of site location)
  • Utility Reports - contact Alfonso Lopez at 303-538-7694.

Drainage and Water Quality
(Section 400)

• NPDES Information
  
  
  • Storm Manhole Cover
    
    
• Floodplain Information
  
  
  • Floodplain Development Permit
    
    
• Urban Drainage Flood Control District
  
  
  • Drainage Reports - contact Alfonso Lopez at 303-538-7694

Traffic and Transportation
(Section 500 and 700)

• 2000 Thoroughfare Plan (PDF Format) (Transportation Masterplan)
• Traffic Calming Guide for Residential Development
• MUTCD (Manual on Uniform Traffic Control Devices)
• Traffic Counts (Map)
• Residential Sight Triangle for Corner Lots
• Sidewalk Water Chase
• Pavement Designs
• Flex Traffic Delineators
• Traffic Studies - contact Alfonso Lopez at 303-538-7694

Contact Us

Development Engineering Contact Information