House Building Companies Where Can I Find Software That Will Help Me Design A House/other Building Structures?

Where can I find software that will help me design a house/other building structures? - house building companies

Please, I'm designing a house cleaning for my company recently and the software that was not necessary and the new person can remove the software houses and building structures, and no one to remind me to build What is the name of the software was. Please help and thank you to everyone who answers!