Old Redwood lumber - structural strength?

[Lynn Harrison]

Anyone have experience with old redwood houses? I will hopefully be looking closely at one soon, built around 1930. It's in bad shape but roofline is still straight and looks re-buildable. Not much water damage I'd guess.

I don't know anything about redwood. This is not necessarily old growth- 1930s, cheaply built house probably built by a logger. From what I've seen of old redwood lumber it gets very light weight- like balsa wood. How much strength is left when it gets light? Should I be concerned the framing might not hold up if the wood is light? Re-enforce it?

I anticipate some carpenter ant damage, but am wondering about lumber with no damage.