Sound is invisible until it annoys you.
Then you notice it every day.
Separate noisy spaces from quiet ones whenever possible.
Laundry machines, garage doors, mechanical rooms, pool equipment, televisions, theaters, and children’s play areas should be considered relative to bedrooms and offices.
Plumbing makes noise too. Drain stacks and upstairs bathrooms can transmit sound into rooms below.
Pipe choice, insulation, wall construction, and layout all matter.
Offices may need acoustic privacy for calls.
Bedrooms may need protection from late-night television.
Solid-core doors, insulation, resilient assemblies, double walls, and acoustic treatments are far easier to install during construction than afterward.
A quiet house feels solid.
And people often interpret solidity as quality.