# 631 Sierra Vista, Allen

Source page: https://checkyourplace.com/address/allen/631-sierra-vista-allen

## Facts

- City: Allen
- Building type: house
- 2026 conforming loan limit: $832,750 (FHFA, Collin County)
- EPA radon zone: 2 (moderate potential)
- Sinkhole-prone ground: on karst terrain (USGS)
- Coordinates: 33.09003, -96.63976

Sourced directly from official city and county records.