Transit-Oriented Development (TOD)

Overview

Transit-Oriented Development is a planning pattern that concentrates housing, retail, and jobs in walkable clusters around transit stops. In zoning terms it shows up as overlay districts, density bonuses, parking waivers, and streamlined approvals within a defined radius of a qualifying transit facility. TOD is both a design ideal and a regulatory trigger — a growing number of state preemption laws (CA AB 2097, CO HB 24-1313, CA SB 35) use "near transit" as the qualifying condition that overrides local bulk and parking standards.

TOD CEQA RHNA PUD Floodplain Overlay All concepts

Key characteristics

Qualifying radius, typically ¼ to ½ mile from a rail station or BRT stop
Higher allowed density and FAR than the surrounding base zoning
Reduced or zero parking minimums
Mixed-use mandates or incentives (ground-floor retail, residential above)
Streamlined approval path (often ministerial)
Often paired with an affordability set-aside

How it appears in zoning

As a TOD overlay district on the zoning map (most common)
As a density-bonus trigger in a form-based code
As a preemption condition — "if parcel is within X feet of transit, these rules apply"
As a specific plan or area plan with its own dimensional standards

Why it matters

TOD eligibility is often the largest single variable in a pro forma for sites within a ½-mile of rail. It can double allowed density, eliminate parking, and remove discretionary review. But the qualifying geometry is unforgiving — a parcel 50 ft outside the buffer gets none of it.

Watch items

Qualifying transit definitions vary — some statutes require ≥15-minute peak headways, others only require the stop to exist
"Near transit" buffers are measured differently in different jurisdictions (street-network distance vs. crow-fly)
Federal conflicts — a TOD height bonus near an airport can still be capped by FAA Part 77