This is a civil issue between the homeowner and the Homeowner Association (HOA). The City does not have the authority to enforce HOA rules. However, Community Improvement Services enforces City regulations everywhere regardless of whether or not a formal Association exists.
If you believe that your HOA is failing to enforce its own rules, you may want to contact your HOA Board of Directors or go to an HOA meeting to discuss the issue and solutions. HOAs generally hire property management companies to handle the care of public spaces in the subdivision and to enforce the subdivision's deed restrictions. All or a portion of your monthly dues usually go to the property management company to perform these services.