It has unique patterning on its body, which is not easily confused with other southern African snakes.

The head is very flat and broad, which is probably an adaptation for accessing narrow rock crevices.

Midbody scale rows range from 21 to 25, the anal shield is entire, and the subcaudals (46–72) are paired.

Spotted house snakes are habitat specialists, occurring in rocky areas, often hiding under exfoliating rock flakes or between narrow crevices.

The spotted house snake is widespread in the eastern parts of South Africa.