Does the ADA cluster rule apply to a 2-unit rental on private property?

No, the ADA cluster rule does not apply to a two-unit rental on private property for a family reunion. The 2010 ADA Standards for Accessible Design require that where multiple single-user portable toilets are clustered at a single location, at least 5 percent of the units in each cluster must be accessible. However, this applies to public accommodations and commercial facilities, not private residential events where attendance is by invitation only and not open to the general public.

For your backyard reunion, renting two standard units is sufficient if you have no guests who use wheelchairs or have mobility impairments. A typical family gathering might involve 20 to 40 people over several hours, with food and possibly alcohol, but since it's private, ADA compliance is not legally mandated. Ensure the units are placed on level ground with truck access for delivery and servicing.

If accessibility is a concern for specific guests, consider adding an ADA-compliant unit voluntarily. This provides a wider door, turning space, and grab bars, making it easier for elderly relatives or anyone with temporary mobility issues. It's a considerate choice even when not required.

Check local ordinances or HOA rules, as some areas have specific requirements for temporary structures, but federal ADA rules do not govern private social events. If you have questions about placement, service, or other details, feel free to ask.