An 11-year-old boy is in serious condition after a shooting inside a home in Norwest, in Sydney's north-west, on Monday afternoon.

Emergency services were called to a property on Fairway Drive shortly after 5pm following reports of a shooting. Police and ambulance crews attended the address and found the child seriously injured.

The boy was treated at the scene by paramedics before being taken to hospital for further medical treatment. Specialist medical teams were also involved in the emergency response.

Police established a crime scene at the property as investigators began examining how the shooting occurred. Initial information indicates that the incident took place inside the home.

Five other people were reportedly inside the property at the time of the shooting. Police said those people were not injured.

The circumstances leading to the shooting remain under investigation. Detectives are expected to examine the scene, speak with people who were present and gather other available evidence as they work to establish what happened.

The incident has prompted a significant emergency response in the Norwest area, with police vehicles and ambulances attending the residential property during the afternoon.

Norwest is a growing area in Sydney's north-west, containing residential developments, businesses and transport connections. Incidents involving serious violence in residential areas can require extensive police investigations as officers work to establish the sequence of events.

Authorities have not indicated that the incident presents a wider threat to the surrounding community. The investigation remains focused on the circumstances inside the property where the shooting occurred.

Residents in the area were confronted with a large emergency-services presence as police established a cordon around the location.

Investigators will continue gathering information as part of the ongoing inquiry. Anyone with relevant information may be asked to assist police with the investigation.

The condition of the child remains serious, and further medical updates may depend on his treatment and recovery.

Police have not released further details about the circumstances of the shooting while the investigation continues.

The case remains active, and investigators are expected to examine all available evidence before determining whether any charges should be laid.