Ask what broke last winter before you ask what the owner wants to pay
The opening question of your intake call decides the whole conversation, and most firms open with the least useful one.
An owner calling a management company is almost always calling after an event. A burst supply line in an unheated back stair. A tenant who stopped paying. A weekend spent clearing a walk from three hundred miles away. Ask what happened and when, and the rest of the qualification comes for free.
Capture the same things every time: address, building type, unit count, whether there is a garden unit, whether it is tenanted, and whether the owner is under an agreement elsewhere. A three-flat in Ravenswood with a basement unit and a greystone with a boiler on one meter are different jobs and different prices.
Write the script down. Intake in most firms is one or two people improvising, and the difference between the best and worst version of the same call is larger than any change you could make to a web page.
Then answer the question the owner has not asked yet: who picks up at two in the morning, and what that person is authorized to do without calling him first.