One way to find out is to post the add at what you think the market rent is.
Don't return any calls.
Run a new add with a higher price.
Compare the number of calls to the first ad results.
At some point you will see a tapering off and that may be a good price point to start interviewing tenants.
Keep in mind that many tenants will try to negotiate the rent down when they are in front of you.
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