"An approach is stabilized only if all the criteria in company standard operating procedures (SOPs) are met before or when reaching the applicable minimum stabilization height."
Flight Safety Foundation (FSF), doc. FSF ALAR Briefing Note 7.1. Stabilized approach 
"The following minimum stabilization heights are recommended to achieve a stabilized approach:
- 1,000 feet above airport elevation in instrument meteorological conditions (IMC); or;
- 500 feet above airport elevation in visual meteorological conditions (VMC).
At the minimum stabilization height and below, a call should be made by the pilot not flying/pilot monitoring (PNF/PM) if any flight parameter exceeds the established criteria.
Any time an approach is not stabilized at the minimum stabilization height or becomes unstabilized below the minimum stabilization height, a go-around should be conducted."