If you're talking about new construction you can use my search to see what styles may be available from a number of Las Vegas home builders.
Covered patios wouldn't be unusual in standing inventory, but pools / spas are often a little rarer to find. At times model homes are listed in the MLS and may have them, but usually would be separate from the above new home search link. The MLS would also have newer construction that could be selected if you'd be interested in those homes. I also don't know what price range or any area or other preferences you may have. My searches can be setup for many more specifics with results delivered to your email, if I had your interests. You can contact me or use my online form if you'd care to do that.
I also want to let you know that if you are considering new construction, registering or requesting more information online, or first visiting any of a builder's home sites without your agent present can eliminate your right to your own representation with that builder. Having your own buyer's agent can be very helpful in negotiating your best price and amenities, as we typically are aware of incentives being offered by various builders. It also helps to have your own agent review and answer any questions you may have on builder contracts, rather than just the builder's agent.
Hope that helps and if you have any questions get in touch.