Where are you moving to in "Larkspur"?
There are a lot of "open space" areas here and lot of gun owners/shooters down here including myself.
At the Greenland exit of I25, to the East, there's a large area, 1000's of acres that I've heard you can hunt on with owner permission, which is generally granted.
There's a few other people that have been known to allow hunting on their property as well.
Most of the space down here is open space however and I don't think you can hunt anywhere on open space.
What are you looking to hunt? Deer? Elk? Snake?

Over the past 5 years, the Elk have moved away from this area where there used to be populations of 1000's of them here just a few years ago.
Send me a PM, maybe we'll be next door neighbors since I know there's a bunch of places that have just sold near me.