This really varies on the home, we try to provide the following amount of photos per home:

1,299 sqft and under 15-20 Photos
1,3000 – 2,999 sqft 20-30 Photos
3,000 – 4,449 sqft 30-40 Photos
4,500 – 6000 sqft 40-50 Photos
4,500 – 6000 sqft 50+ Photos