I have been building a quest and would like to have the scenery change during the events.

ie.Get a quest from a guy in a house, go do it, come back and the house is charred and the man is crispied.

I've seen no mention of this topic on tutorials or forums and while I know there are triggerable events like ambushes, I am wondering if there are triggerable landscape changes as well whether it be to the terrain, an actor, or object.

Thanks.

It must be possible.. look at Helgen for example. It's all well when you go there, than Alduin arrives, and things.. change. Maybe you should check that area out in the CK for clues.

Edit: There must be static objects there that are enabled-disabled at the second of the script/quest activation.

Landscape cannot be changed dynamically. You can fake change by using statics, but the landscape textures, height and colouring cannot be changed anywhere apart from in the CK.

You can clone a worldspace and then move the player silently to the other worldspace. Say a vulcano explodes, then you can model landscapes before and after and trigger the transition while the player is knocked out fe.
You can also make some imposter landscape (a NIF which looks and alignes exactly to the landscape) and make animations for that mesh.

You just need to be creative.

The actual landscape itself I'm not so sure about. Making it so that the house becomes a charred ruin definitely is.

Look at how Bethesda did house decorations... uses the same principle. Link the exterior house object to a marker with enable parent. Hide the house, create the charred wreckage right where the current house is and link those objects to a different trigger the same way, but set the trigger to start disabled. Have a quest or whatever disable one and enable the other and there you have it. You can link as many things as you want to the trigger so you could do all kinds of stuff. The actual code is all in the HousePurchase quest if you want to see what I mean.

Not sure about the actual landscape itself though... any static objects or NPCs work for this though. My mod uses this technique to buy decorations.