A British Airline :
Target Stabilisation Altitude : 1000'AAL
Minimum Stable Approach Point : 500' Radio Alt.
Stable Approach Criteria :
1. Gear Down
2. Landing Flap
3. Speed +15/-5 kt
4. V/S < 1200fpm
5. Bank < 10deg (circling app. by 300'aal)
6. On Profile (1 dot Loc/GS)
7. A stable thrust setting
If it is obvious that any component of the SAC will not be met by the SAP, or the approach becomes destabilised below SAP, or if in any doubt of safely continuing, GO AROUND !!
In my Airline all these criteria, and hundreds of others are monitored electronically, if you don't comply, expect a phone call!!