How Many LLCs do I need?

[Jessie Huffey]

So my husband and I currently have an LLC for his construction business which primarily consists of remodels and home renovations. We also have land that we would like to build a couple of spec houses on as investments. I don't know if I should start a separate LLC for the spec houses, do the spec houses as personal investments in our own name or do the spec houses under his construction LLC. Any thoughts and opinions on the best way to structure this would be appreciated. Thanks!