The requirement for a permit to remodel a kitchen can vary depending on local building codes, regulations, and the specific scope of the remodeling project. Generally, significant kitchen renovations that involve structural changes, electrical or plumbing work, or modifications to load-bearing walls will likely require a permit. Cosmetic upgrades such as replacing cabinets, countertops, or flooring may not always require a permit, but it's essential to check with the local building department to confirm the specific requirements in your area.
Since you mentioned that you live in a residential neighborhood, it is important to note that certain homeowner's associations (HOAs) or neighborhood associations may also have their own guidelines and regulations regarding renovations or modifications to properties within their jurisdiction. It's worth checking whether your neighbor's remodeling plans comply with any applicable HOA rules or regulations.
To obtain accurate and up-to-date information regarding permit requirements for your neighbor's kitchen remodel, it is recommended that you or your neighbor contact the local building department or zoning office. They will be able to provide specific guidance based on your location and the details of the remodeling project.