How to change format and import to unity3D?

hello guys,
I have started creating small homes instead of building as a beginners in a software named as sweet3Dhome, now my home making is complete and i want to transfer it to unity, but i know i can’t straight away import that, Somehow i have to change the format and than do it to get imported.

“Can please someone suggest me some method to do so?”

Thanks in advance for your help.

If it exports to OBJ, that will probably contain enough information to convert to FBX in most modelling packages. (eg: Blender) Of course, if it exports to FBX, you’re golden, but you would probably have mentioned that if it did.

…Then that’s all you need.

–Eric