The only new construction of a courtyard plan that I know of is available at Providence in Davenport. There is a model of the Courtyard IV plan by ABD development there. The builder has sold the model to a private owner, but it just so happens that I know the person who purchased it from the builder and will gladly get you in contact with him because he's a business partner and trying to sell it.
The model is not on the golf course, but you can still build this home a golf course lot at Providence.
ABD development has built the courtyard plan in Stoneybrook and Palma Vista which are golf communities and also in Phillips Landing, Vizcaya, and Vista Royale which are not golf communities but numerous top notch clubs close by.
There's also a courtyard plan for sale at Bristol Park in Dr. Phillips. It's not a golf community, but Orange Tree Country Club and Bay Hill are really close by.
I specialize in SW Orlando, so I know the ones that are available here but I'm sure there's some in Lake Mary as well.