I remember reading about this but of course now that I need it I can't find alot of info.I have Real Wildlife Skyrim and I'm getting conflicting solutions.Do I just unclick it in my data files or do I need to unsubscribe(I use the steam workshop because it's easier since I don't have a clue about mods.This is my first time using them)I read that once I build the small house I can activate the mod again.I also read that if I load it before Hearthfire it would work.Does the unofficial hearthfire patch fix this?Any help would be appreciated and be gentle,as I said I don't have a clue what I'm doing.

Did you do a batched patch to your mods? Using Wrye bash is simple and mandatory. And if you did/ or this did not help you - You could always download a mod that modifies that cell with Hearthfire in mind. Something like http://skyrim.nexusmods.com/mods/25387. And it should work like a charm. Download the mod before you try to build your house in that cell.

OK.I can see my house now.I just unchecked the mod .Now if I knew when it was safe to check it again.......

Obviously after you finish building all your houses it might be safe to use it. Personally I would just leave it out till the maker makes it compatible with DLC, but I am not a PC player addicted to mods.

This is the first time I ever tried mods and I only have a few.

Well just leave it out until it is updated then, you already know it is not compatible with Hearthfire, better to have some new houses that what ever the mod is doing.