how many cats do you have?
I have 3 cats! I love cats! Rare in Texas.
awe, so nice! Very awesome to have built a sanctuary for them. will you adopt more? 
I hope so! I volunteer around them so often. Husband doesn't want anymore.  What would you do?
That really is amazing, not very often do you find people who volunteer to such an important cause. What are his reasons for not wanting more if I may ask? With time we come to love our pets more and more I'm sure he'll warm up to having more with time. 
We already have 3 cats and 2 dogs!  Thats a lot of animals.  Maybe I could put a cat house in my backyard?
That's an amazing idea! definitely would be great! You could keep several cats warm and safe. 
What materials should I use?
some plywood,  2x4s, screws. make sure they are all for outside so they can sustain being weathered. 
Thank you!  I wish I could open my own animal shelter
very well thought! There must be some programs that could help you  achieve that goal!
I will look into it! I think El Paso needs more shelters!