Begin with where people listen and what they listen to. Background music, a focused listening room and television sound can need different designs.
Plan each listening area
Room shape, speaker placement and sound travelling into other rooms all affect the experience. Outdoor listening also needs a suitable weather-rated system and considerate coverage.
Review wiring and amplification
Built-in speakers need a compatible amplifier and appropriate cable routes. A product family such as Sonos Amp can be part of an installation, but speaker loads and integration must be checked for the exact equipment.
Keep everyday control simple
Discuss who will use the system, available music services and how rooms should be grouped. Test the agreed functions during handover.