Valheim plus is currently broken and this question is more specific to building. Thus I would recommend the infinity hammer mod. You can turn off structure integrity in the config manager.

Don't need a mod just read the wiki or watch a video on how structural integrity works. It's not hard. Use core wood poles as a frame and ez.

Then press B to get access to all the things.

I used ghost the other day coz them greys would ney leave me alone.

no placement cost cheat doesn't stop buildings from falling apart. i think valheim plus had something for structure integrity but i didnt use it personally

Originally posted by Biçer:

no placement cost cheat doesn't stop buildings from falling apart. i think valheim plus had something for structure integrity but i didnt use it personally

Indeed, there is a limitation in this game for large structures causing the game to lose performance, so having structures be too big is kind of a bad thing, the game mechanic of stress helps limit your structure height at the very least.

Originally posted by Drummerzone:

Seriously, is there some kind of cheat for building a house without the roof falling apart? This stopped being fun 4 hours ago. Like a perfect structure cheat code?

With regular beams and wall/floor panels, you can only build 5 away from any grounding point. If your roof is collapsing, it just means you are trying to place it too many pieces away from touching the ground, tree, or rock.

The console commands won't help you except that you would be able to use iron beams, which can go much further from foundation and when you connect another piece to them, it counts as you putting that piece on a foundation. There are lots of videos with tips about this, and how to use longer corewood beams to help lessen the restriction a little. Or like someone else said, perhaps a mod that changes integrity physics.

Originally posted by Drummerzone:

Seriously, is there some kind of cheat for building a house without the roof falling apart? This stopped being fun 4 hours ago. Like a perfect structure cheat code?

YOu can install a mod that disables the structural integrity
Or you just learn how it works
use 4m Core wood poles to gain heigh
Make sure the first is blue,
After 5 wood blocks you have reached the max range you can build

Wood iron beams allow you to build 25M high.

Originally posted by asanger:

Wood iron beams allow you to build 25M high.

Wood only
https://steamcommunity.com/sharedfiles/filedetails/?id=2425115393
WIth iron logs (could be higher)
https://steamcommunity.com/sharedfiles/filedetails/?id=2426483628

Well if one needs cheats just for building..... thats a new record.......
So easy to build big and good....

Valheim Plus mod allows you to disable structural integrity, along with a hundred other useful things you can tweak or turn off. I highly recommend it.

Just learn how to build properly. If your roof is falling in than its not supported.
https://steamcommunity.com/id/SmOkEy907/screenshots/#scrollTop=0 Used Wood iron beams on the four corners of the highest part of that build. Just gotta mess around with it. Support in this game only really works from the ground up, supporting with cross beams doesnt always help.

Originally posted by DredSilent:

Yes, turn debug mode on.

1. Press f5
   
2. type imacheater
   
3. type debugmode
   
4. press b - no build placement cost
   
5. press z - fly mode
   
6. press k - kill everything around you

As of the most recent patch - March 13 2023? The no build option "B" is no longer working. All the rest seems to be, but I get a response that "B" is not a valid option now. Is this intended? Anyone know?

Yes, turn debug mode on.

1. Press f5
   
2. type imacheater
   
3. type debugmode
   
4. press b - no build placement cost
   
5. press z - fly mode
   
6. press k - kill everything around you