Which question should come first?
Begin with the customer’s task. “What would you like help with?” or a short choice of services is often more useful than asking for a budget before the person knows what you offer. Use words that match the business rather than internal sales categories.
Explain the purpose of a necessary question. “Which city is the property in? That helps us route you to the local team” gives the customer a reason to answer. Do not make someone repeat details they already supplied in the conversation.