Here are pictures of my kennels that I built during the summer.
The kennel block is approx 12 foot by 12 foot, the sleeping quaters are approx. 4 foot by 4 foot, the outside runs are 5 foot long and I put a 3 foot outside yard. The outside yard is the same idea that Mik has above and I find it handy for cleaining out and feeding, etc..
The kennels are made from 4 inch concrete blocks, plastered inside and outside, profile cladding roof on the sleeping quarters, and I have a socket and light in each sleeping area, two outside lights on a sensor and a tap in the outside yard for running