Even when no federal or state law is directly violated, rules can be unenforceable simply because the HOA doesn’t have the authority to impose them.
Interior Property Restrictions
HOAs govern community standards and common areas. They generally have no authority over what happens inside a home. Interior decorating choices, furniture selections, room usage, and personal property storage are beyond the board’s reach.
The narrow exception: when interior conditions create a documented safety hazard — hoarding that presents a fire risk, or unsanitary conditions that attract pests affecting neighboring units. Even then, enforcement must follow proper procedures and typically involves coordination with local authorities rather than direct HOA action.
Guest and Visitor Restrictions
Rules that track, restrict, or require approval for overnight guests generally violate privacy and tenant protections. An HOA cannot dictate how often family and friends visit, require guest registration beyond reasonable parking permits, or limit the number of overnight stays per month.
Guest parking rules are generally enforceable. Guest approval requirements are not.

Forced Contractor Requirements
Requiring homeowners to use only HOA-approved vendors for work inside their own property raises antitrust, property rights, and consumer protection concerns. Boards can require that contractors meet insurance and licensing standards. They typically cannot mandate specific companies.
Complete Rental Bans
While rental restrictions are common and generally enforceable, complete prohibitions on renting face steeper legal challenges. Many jurisdictions require proper membership approval for outright bans, grandfather clauses for existing rental arrangements, and compliance with state-specific rental restriction laws. A board that unilaterally bans all rentals without following the required process is creating an unenforceable rule.