What is the Denver zoning code?

Denver's zoning code is organized as a form-based system similar to Miami 21 but with its own naming conventions. The code is administered by Denver Community Planning and Development.

Zone district structure:

Denver zones are named with a prefix (neighborhood context) + a letter (building form) + a number (building height/size).

• U — Urban (most central neighborhoods).
• E — Urban Edge.
• S — Suburban.
• R — Rural.

After the prefix, a letter indicates the building form:

• SU — Single Unit.
• TU — Two Unit.
• TH — Townhouse.
• MU — Multi-Unit.
• MX — Mixed-Use (commercial + residential).

And a number indicates maximum building size/height.

Example: U-SU-C = Urban neighborhood, Single Unit, "C" size (roughly 35-foot height limit).

What the code regulates:

• Lot size and width minimums.
• Building height (in stories + feet).
• Setbacks (front, side, rear).
• Floor area ratio (FAR).
• Lot coverage.
• Building form (bulk plane, build-to zone).
• Parking.

Denver ADU rules:

• Denver permits ADUs in many residential zones.
• 2021 reforms expanded ADU-eligible zones.
• ADUs must meet the zone's setback and size standards.
• Detached ADUs limited in footprint and height by zone.
• No replacement parking required in most cases.

Residential remodel considerations:

• Bulk plane — Denver's unique regulation limiting how the building envelope can extend toward property lines above a base height. Drives the shape of additions.
• Build-to zones — some zones require building within a specific range from the front lot line.
• Design overlays — Lowry, Stapleton, some neighborhoods have additional design standards.
• Historic districts — Curtis Park, Baker, many others — Landmark Preservation Commission review applies.

Typical Denver permit process:

• Denver eCompliance portal for application.
• Residential remodel plan review: 4-8 weeks first cycle.
• ADU permit: 6-12 weeks.
• Inspections via portal.

Common Denver-specific rules:

• Slot home prohibition — 2018 regulations limit the "slot home" building type that became controversial.
• Group living — 2021 reforms expanded where group living (co-housing) is allowed.
• Short-term rental registration — Denver requires STR license with primary-residence requirement.

Climate considerations:

• Denver snow load requirements on roof design.
• Basement insulation code.
• Altitude affects building science (vapor barriers, combustion).

AskBaily's Denver contractor pool is familiar with current DZC standards and neighborhood overlays. See /denver for deeper local context.