How can I handle "unpermitted" work before selling my house?

[Juan Mendoza]

I had a question for you regarding our first deal and hopefully you can help us. We are from San Antonio, TX, we bought a home 1.5 years ago and we are currently living in it. We extended our kitchen into the garage and we added about 250 sq ft to the property. The problem is that we didn't get a construction permit because we didn't know it was that necessary. My step-father is an experienced contractor and he helped us on the construction, so it is not like we did a DIY project. We are getting ready to sell the house but how do we manage the "unpermitted" work we did? Can we list the property with extra 250 sq ft?