I don't have knowledge of Lennar's track record in Martins Chase, but check the link below about complaints raised against Lennar from other areas. Undoubtedly, every builder will have complaints against them, but these should raise your antenna.
You might also want to Google "Lennar Homes Complaints". Unfortunately, there is a lot there.
I hope this helps.
Let me know if you need my assistance in purchasing a new home. I'll help you determine the best course of action for you.