Hi Kittyfeet and welcome back!
What part of Centennial are we talking about? Parts of it are pretty commutable to Denver Health. Parts of Centennial are very un
commutable though so it just depends on where. I hate telling people I live in Centennial because it's like saying I live in Arapahoe County.
What price range are you looking at and how much house do you need? There are some excellent neighborhoods very close to DH (Denver Country Club, Cherry Creek, Governor's Park, Cheesman Park, Congress Park, Wash Park, DU) but their median prices for a 3 bedroom 2 bath with a 2 car garage are outrageous, even with real estate values dropping. Especially compared to TX prices. The best way to check this out would be to compare your current zip code with those surrounding DH at http://www.city-data.com/
It gives you all sorts of information about potential neighborhoods.
The different counties' property tax rates vary widely too so don't forget to figure that in when you're estimating housing expenses.
For looking at homes for sale online, this site is more quickly updated than the Realtor.com site: www.recolorado.com
Your Colorado residency is one year from the date of your legal residence here. Once you move back, make sure you replace your license plates and driver's license right away. If you price it out between out of state tuition and flying back to Texas you'll be able to figure out which is more economical.
Good luck and congratulations on your upcoming commencement. That must be such a relief.
Feel free to PM me if you have any other questions.