The burned area that we could see is shown below. In the left-hand photo, north is about at the left edge; in the right-hand photo, east is about at the right edge. The fire burned right to the top of the ridge at right, and quite possibly beyond that – we simply couldn't see from where we stood, and we couldn't go down Lyons Valley Road to see directly, as it was closed.
Here's a very rough map (below) I drew by hand to show the burn boundaries. I can't tell for 100% sure, but it appears to me that the fire crews managed to protect all the homes on the north side of Lyons Valley Road. I don't believe there were any structures in the burn areas uphill from those homes along Lyons Valley Road.