Can I and my wife as Premium Members have only one land(hers plus mine) and only a bigger house?

[Lindal Kidd]

Yes.  Create a group, and both of you join it.  Both of you abandon your Linden Homes, if you have them.  Donate your 512 square meters of free tier to the group.  Find a 1024 square meter parcel of mainland you like, and buy it for the group.

[Lindal Kidd]

Yes.  Create a group, and both of you join it.  Both of you abandon your Linden Homes, if you have them.  Donate your 512 square meters of free tier to the group.  Find a 1024 square meter parcel of mainland you like, and buy it for the group.

[Chic Aeon]

Along with Lindals method you could each buy a 512 next to one another.  Make a group with just the two of you or invite some friends if you want. Then simply "set the land to the group". Then you can both share the land and the prims and your house and still have your own stuff.  You would own your lot, she would own hers. While I hope your relationship lasts a long while, sometimes they don't. This assuming Virginiana is an SL wife and not a RL one. LOL.

The only downside to this method is that you would have to make sure your prim limit was kept on each of the 512s. On a 1024 that isn't too hard. Friends and I shared land this way for many years with no issues.

So two methods. You cannot however get extra prims for you Linden home by "sharing". You would need to get a mainland plot. You can buy a 512 of abandoned land for 512L so it is very cheap. Sometimes even cheaper than that.