Other debris from the aircraft was scattered on nearby rooftops. NTSB officials said the debris field was about 4 blocks long.
Debris field that big is consistent with plane coming apart above ground.
https://abc7.com/yorba-linda-5-killed-after-plane-crash-sparks-house-fires/5119211/
This is probably the plane.
https://flightaware.com/live/flight/N4RS/history/20190203/2139Z/KFUL/KFUL