Before you respond: Read the actual CC&R provision cited in the violation notice. HOA managers sometimes apply rules more broadly than the governing documents allow. Knowing the exact language is your best defense. Find your CC&Rs in the documents you received at closing, or request a copy from your HOA management company.
Important: This template provides a general starting point. HOA disputes can have significant consequences including fines and liens. If fines are substantial or you face a lien situation, consult a real estate attorney in your state before sending this letter. Check your state's specific HOA laws — California, Texas, Florida, Nevada, and Arizona all have statutes that limit HOA enforcement authority in specific ways. Not legal advice.