Where can I find information on my rights as a landlord when a tenant passes away?

[Ashley E.]

So I had one of my tenants pass away at my rental property. There are still many family members living there, and they seem to be able to afford the property as is, but I was wondering if anyone knows where I might find information about my rights as a landlord in this case. I briefly browsed the internet, but there is so much conflicting information...where is the best source (government agencies included) to look for the information?

Am I allowed to require them to requalify for the property?
Am I allowed to sell it?

Does anyone know a good real estate attorney in the Denver area?

thanks guys! :)