Does the ADA cluster rule apply to a single unit on private property?

The ADA cluster rule does not apply to a single portable toilet on private property for a private event. The 2010 ADA Standards for Accessible Design require accessible units only when multiple portable toilets are provided at a single location. The ADA 5 percent cluster rule states that where there is a cluster of single-user portable toilets, at least 5 percent (but no fewer than one) must be an ADA-compliant portable toilet. Since you are renting just one unit, this rule is not triggered.

When the rule applies
The requirement is for clusters. If you had two or more standard units placed together for your backyard party, you would need to include at least one accessible unit. The rule is based on the number of units at the location, not the number of guests or the type of event.

What an ADA-compliant unit provides
An accessible unit is larger inside, with a 60-inch diameter turning space for a wheelchair, grab bars, a wider door, and lower door hardware. Even when not required, some hosts choose to rent one for guests with mobility needs. A standard unit is not accessible.

Other considerations for your event
For a home event, check if your local permit office has rules for temporary structures. If you are serving food or alcohol, plan for more frequent use. Place the unit on level ground with clear truck access for delivery and servicing. If you have questions about placement or service for a one-day gathering, ask below.