What are signs that puberty is almost over?

With final height: Although the order of puberty is slightly different for boys and girls - and usually starts later in boys - for both genders, the "end" of puberty is usually marked when the teenager achieves their final height. If there has been no increase in height in a year, this is likely the end of puberty.

Varies: It depends on whether you are male or female. For most girls, the final adult height is usually achieved within 2-3 years of their first menstruation. Some boys continue to grow well into their late teens