Many people have experienced frustration with difficult neighbors, often observing others' perceived transgressions from the comfort of their own homes. However, former royal butler Julius F. Smith suggests that individuals might inadvertently be the source of their neighbors' discontent.

Smith, who also founded Regal Afternoon Tea, has identified 17 common behaviors that can contribute to one being labeled a "nightmare neighbor." These range from noise disturbances and inconsiderate parking to boundary issues and excessive socialization.

One common complaint involves noise, such as children playing too early on weekend mornings, or loud work-from-home calls echoing through open doors. Hot tub use late into the night and the roar of a lawnmower during dinnertime are also cited as disruptive activities. Unexpected parties without prior notice can also cause significant annoyance.

Subtler behaviors can also strain neighborly relations. These include consistently using a neighbor's property as a personal delivery drop-off point without promptly collecting packages, or overwhelming neighbors with excessive invitations and conversation, failing to recognize their need for personal space. Similarly, constantly complaining about other neighbors can become a nuisance in itself.

Parking disputes are highlighted as a significant flashpoint, particularly on streets with multiple vehicles per household, where residents may park in front of a neighbor's house instead of their own. Excessive surveillance, such as constantly watching neighbors' comings and goings, is also noted as an intrusive behavior.

Other behaviors identified include feeding a neighbor's pet without permission, habitually leaving blinds open while changing, allowing garden boundaries to encroach on a neighbor's property, and a dog's incessant barking that the owner has become accustomed to but neighbors find disruptive. The practice of banging on walls to signal noise complaints is also mentioned, with a suggestion that a polite word might be more appropriate in modern constructions.

Even seemingly innocuous activities like setting off fireworks without a specific occasion or frequently hosting barbecues can be irritating to those not involved. Smith emphasizes that being a good neighbor is not about perfection but about awareness and considerate actions. Simple gestures, such as closing doors during calls, giving a heads-up before a party, or reserving fireworks for appropriate occasions, can help foster better relationships within a community.