I have used a blotter/desk calendar with big squares for the days and used it as a daily/weekly/monthly organizer.
It’s extremely efficient and doesn’t disappear or get lost. You can record things in future months simply by lifting the pages to the appropriate month.
Otherwise, I carry a notebook/pad with me all the times, and I transfer some of my notes to the calendar, such as phone numbers, addresses, etc. .
I’m really a low-budget operator when it comes to ‘time-saving’ devices. I’ve never had any device that saved me time, or grief.
It’s useful for me to create a physical file folder for every deal I’m working on, and keep them handy in a file organizer. I print hard copies of everything and store them in the appropriate folder so nothing gets lost.
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Incoming calls from sellers MUST be captured live. Like Rando said they’ll call someone else, and you’ll lose the deal.
It truly amazes me how few investors understand the importance of answering their phone live from sellers. It doesn’t make much difference what number you publish when marketing for sellers, as long as someone is available to capture the call in person and knows the questions to ask.
Taking calls from unqualified buyers is a whole different approach. I put unqualified buyers to an outgoing message line, because it saves time repeating a description of the house to the curious, unserious, looky lous and fellow investors that are just time wasters, etc.
The buyers that hear the asking price, the address, the financing terms, and actually drive to see the house, become qualified buyers. They are given the opportunity to call my live number (listed at the house). That’s the one I answer.
Of course, some just drive by the house first, and see my number without hearing the qualifying description, so before they can actually speak to me, they must still listen to my entire message describing the house, and then they get instructions on how to reach me personally.
Any buyer who actually gets through to me, I know has seen the house already. That saves SO much phone time.
FWIW