Can my house get searched?

i got this friend..well, we arent really friends anymore, thats kinda the problem. I got a feeling he might snitch on me cuz he wants to fuck me over. So, if he tells the cops i smoke or that im in possesion, can the cops search my house? or do they need more evidence than that?
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everything i say here is false. this is my internet fantasy.

They will fuck with you. Trust me I know of a grower who was snithced on and the police showed up at the residence and asked to come in saying there was a complaint marijuana was being grown. The grower nearly shit his pants and asked if they had a warrant, they said no but they would be back in an hour. He destroyed the garden and tried to put all the plants down the garbage disposal, it was a real disaster. And you know what? The cops never came back. True story so unfortunatly the cops know even if they show up and get turned away that they have stopped another grow op. Im pretty sure every one would have the same reaction. So they might do the same to you if someone convinces them your growing weed. Sucks but you learn not to tell anyone. Its always a problem to grow and keep it a secret from everyone all the time.

^this happenned to my neighboor...
The cops came,he didnt let them in and they said they left the warrant at the station and would be right back.
He came knoking on my door freaking out.we both hauled his 4-6 plants into my appartement 1 floor above his.and a good 6 grams of weed.
The cops never came back,and it's been a year.
The plants stayed at my place for about a week untill he got comfortable again.
This is the reason why using CFL's are much safer in appartements then HPS and MH.
Low heat and barelly shows on power meter if u time the lights well.

Good advice here.

Remember, never let them in, when you talk to the cops, make sure they can't see a bong or some stems and seeds anywhere cause that gives them probable cause. Or smell.