Next, you need to make sure you are building the right size dog house. It doesn't have to be too large, but you do need to make sure your dog will be comfortable or he will likely not use it. The house should be tall enough for him to sit on his back legs or stand comfortably and turn around. If not, your work will likely be in vain.
Next, consider the weather where you are. Is your area prone to rain? High winds? High heat? Extreme cold? Any of these should be taken into consideration when you are building dog houses.