Importing Houses or Housing and Lot Features

[purpledaddy]

I'm really not sure where to put this thread, b/c I don't know if I am asking for something new or something already made or a part of the game.  Anyway...  I've played The Sims 2 for about a year and I have some ideas for a house and lot that I want for one of my families. However I have never built a house fr scratch before. When I download there are features from several lots and buildings that I would like to see in the lot for my family. What type of mechanisms are there to copy either buildings, features of buildings, or lot & land properties & attributes to add and or combine them to a new lot?
Thanks!