I can't find my phone and the find my iphone is turned off. I know it is in the house

If the phone is on and has power, have someone call your number and listen for the ring. If not, there is no option other than just looking for it.

Also see the following from If Find My iPhone or Find My iPad isn't enabled on your missing device - Apple Support

If your missing device doesn't appear in the Find My app or at iCloud.com/find, you didn't turn on Find My. There's no other Apple service that can find, track, or flag your device for you. But there are steps that you can take to help protect your data.