What notice do we have to give our current management company?

Thirty to ninety days is the common range, with sixty being the most frequent. The number is in your management agreement, usually in the term and termination section rather than the fee addendum.

What catches Boards out is not the length but the window. Many agreements auto-renew unless notice lands inside a specific period before the anniversary — say, no later than sixty days and no earlier than ninety. Miss it and you have renewed for another full term.

Put the notice deadline on the Board calendar the day you sign any management agreement, not the year you want to leave.