Trying to make it so if I'm toucing something and have a button down it does something

I’m trying to make something happen when I am touching a tag and pressing a key but its not working.

void OnTriggerEnter(Collider other) 
	{
		if (other.gameObject.tag == "House1" && Input.GetButtonDown("Interact")) {

Nothing happens when I try this, If I remove the Input.GetButtonDown it does let me enter it without pressing a button.

Your code above will only work if you happen to press the button down in the same frame that you entered the collider. Use GetButton() instead:

   if (other.gameObject.tag == "House1" && Input.GetButton("Interact")) {