When there's jobs to be done around the house many people will be tempted to roll up their sleeves and have a go themselves.
But builders - who are in short supply - have urged construction novices that some jobs aren't worth the risk.
If they go wrong, the building experts said, it could cause eye-wateringly expensive damage to homes or even put the dwellers in danger.
Barry Goddard, owner of Golden Triangle Builders, said: "The thing I would always tell people not to try themselves is rough-in work. The likes of plumbing and electric lines being bought in.
"Staying away from plumbing and electric is pretty obvious - most people do - but if they don't it can cause permeant damage to a home or hurt the person trying to do the work.
"You should also never attempt to knock down walls yourself - you never know what structural damage it could cause if you don't know what you're doing."
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here