door-to-door
adjective [ before noun ]
uk/ˌdɔːtəˈdɔːr/ us MARKETING
going from one house or building to the next in order to sell or ask something:
a door-to-door survey of 1,500 residents
door-to-door sales/salesperson/salesman
COMMERCE
delivered from the factory directly to a customer's home:
Instead of offering door-to-door delivery, the firm wants to persuade customers to pick up their purchases.