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Site Development Plans

Zoning

Most properties in the City have 3 related zoning components: Use Zone, Form Zone overlay, and Form Type (see explanation below). You can find the zoning of a property by using the online planning map

Use Zone – Zoning determines the uses allowed on a given property.

Form Zone Overlay – The Form Zone Overlay determines what kind of Form Types can be built on a given property. 

Form Type – Form Types set the parameters for structures allowed to be built on a property, such as setbacks, height and other lot standards.  

When a Site Development Plan (SDP) is Necessary
You Need an SDP for:
  • New Buildings and Parking Areas:  If you're planning to build something new.
  • Substantial Alterations:  An increase in floor or parking area over five years by 25% or more
When an SDP is Not Needed:
  • Single Homes in Legacy Zone Districts:  If you're building or making major changes to a single home in a legacy zone district (like residential estate (RE), industrial (M1 or M2), agricultural (AG), conservation, or planned unit development (PUD)), you usually don't need an SDP.
  • Two-Household Dwellings:  The same goes for building or significantly altering a two-household dwelling in legacy zone districts.
  • Planned Unit Development (PUD):  Contact Planning Department
Even if you don’t need an SDP, your project still has to follow the zoning rules. 
Specific Zoning RequirementsLegacy Zone District
Table 1.  

Zoning 

Project Type  

SDP Criteria 

Legacy Zone District (RE, M1, M2, CO, AG, RM) 

Single Household or Two Household Residential  

18.29 Division IV
18.36 Parking Standards

Legacy Zone District (RE, M1, M2, CO, AG, RM) 

Multi-family and Non-residential 

18.40 Division II - IV
Chapter 18.24 Residential Sustainability Standards 
18.29 Division IV
18.36 Parking Standards

Form Zone Overlay ProjectsA Form Zone Site Plan application is required for new development or substantial alterations for house, cottage, or duplex building types in a Form Zone Overlay. Standards and details for the Form Zone Site Plan [FZSP formatting page (pending)]. 

Zoning 

Project Type  

SDP Criteria 

Form Zone Overlay (Specific to applicable form type) 

House, cottage, and duplex (Form Zone Site Plan) (link to FZSP page) 

Application of Form Standards 
Form Standards 
Form Type Design Standards and Guidelines 
18.29.06.002 Landscaping design considerations 
18.29.06.003 Landscaping Plans and Materials 
18.29.06.004 Units of measurement 
18.29.06.005 Landscape Requirements for the public realm 
18.29.06.006 Landscape area requirements 

  • Minimum Landscape Surface  
  • Street Facing Yards 

18.29.06.007 Fencing, retaining, and perimeter walls 
18.29.06.009 Site Preparation and Irrigation 
18.36 Parking Standards 
18.40.212 Drainage and Grading Standards 
18.40.270 - 272 Mitigation of Highway Noise
18.40.292 Hillside Standards
18.24 Residential Sustainability Standards

All other new construction or substantial alterations require SDPs with the submittal requirements established by 18.40. Depending on the zoning, additional SDP criteria apply. Use the table below to determine the code sections applicable to different types of projects and their associated zoning: 

Table 2. Zoning, Project Type, and SDP criteria 

Zoning 

Project Type  

SDP Criteria 

Form Zone Overlay (Specific to applicable form type) 

Compound, Cluster 

(Form Zone Site Plan) (Link to Form Zone Site Plan Page) 

Application of Form Standards 
Form Standards 
Form Type Design Standards and Guidelines 
18.29.06.002 Landscaping design considerations 
18.29.06.003 Landscaping Plans and Materials 
18.29.06.004 Units of measurement 
18.29.06.005 Landscape Requirements for the public realm 
18.29.06.006 Landscape area requirements 

  • Minimum Landscape Surface  
  • Street Facing Yards 
  • Common Courts 

18.29.06.007 Fencing, retaining, and perimeter walls 
18.29.06.009 Site Preparation and Irrigation 
18.36 Parking Standards 
18.40.212 Drainage and Grading Standards 
18.40.270 - 272 Mitigation of Highway Noise 
18.40.292 Hillside Standards 
18.24 Residential Sustainability Standards 

Form Zone Overlay (Specific to applicable form type) 

Row house, main street, mixed-use, and shop building form types 

(Form Zone Site Development Plan) 

Application of Form Standards 
Form Standards 
Form Type Design Standards and Guidelines
18.29.06.002 Landscaping design considerations 
18.29.06.003 Landscaping Plans and Materials 
18.29.06.004 Units of measurement 
18.29.06.005 Landscape Requirements for the public realm 
18.29.06.006 Landscape area requirements 

  • Minimum Landscape Surface  
  • Landscape associated with surface parking areas 
  • Street Facing Yards (except Mains Street and Shop Form Types) 
  • Alleys and shared driveways (except Mains Street and Shop Form Types) 

18.29.06.007 Fencing, retaining, and perimeter walls 
18.29.06.009 Site Preparation and Irrigation 
18.36 Parking Standards 
18.40.212 Drainage and Grading Standards 
18.40.270 - 272 Mitigation of Highway Noise 
18.40.292 Hillside Standards 
18.40.340-350 Sustainability Standards & Guidelines 

PUD 

Any 

Refer to the standards of the Official Development Plan (ODP). Site development standards and guidelines set out in Appendix A of chapter 18.40, "Legacy PUD Standards," apply to site development plans within planned unit development zoning districts that are approved as of June 26, 2023, unless otherwise explicitly provided in the PUD official development plan or approval documents. PUDs approved after June 26, 2023, are subject to the standards current at the time of application for standards not explicitly addressed by the ODP 

For sites located within the Clear Creek Corridor, Chapter 18.40 Division V applies in addition to all other listed standards 

For sites located in Historic Districts, pre-approval for projects per Chapter 18.58 applies 

SDP NOT RequiredProjects not meeting the definition of substantial alteration do not need to submit SDPs before applying for building permits. However, these projects must submit plans showing that all applicable standards are still met. Use the guide below, based on zoning, to determine what criteria apply to these kinds of projects. 

Table 1. Zoning review criteria for Less than Substantial Alterations 

Zoning 

Standards to follow 

Legacy Zoning (RE, M1, M2, CO, AG, RM) 

18.29 Division IV 
18.36 Parking Standards 

Form Zone Overlay (Specific to applicable form type) 

Application of Form Standards 
Form Standards 
Form Type Design Standards and Guidelines 

PUD/ODP 

Refer to the standards of the Official Development Plan (ODP). If an ODP refers to a legacy zoning, refer to the 18.28 Appendix A Legacy Standards 

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