A new St Philip lighthouse found under Decor / Misc. Decor , costs 0. This mesh is NOT the same as the EA lighthouse, it's derived from a different clone object. The light rotates 360 degrees. You need Late Night or a later pack for the lighthouse to show in your game. It can be used in CAW.
There is an earlier post explaining how to install items in CAW.
Importing packages into CAW
St. Philip lighthouse (MediaFire)