This is the first book in my husband's series and I believe it is very close to what you're looking for (you can get it in ebook, paperback, or audiobook). The main character, Jack, deals with finding, fortifying, and maintaining a safe place. While it is fiction, he tries to keep it as real as possible. The creatures aren't necessarily zombies; they're actually closer to the things in "I Am Legend" .
Day by Day armageddon http://www.amazon.com/Day-Armageddon-J-L-Bourne/dp/1439176671
The Remaining http://www.amazon.com/Remaining-D-J-Molles-ebook/dp/B00H25FGBO/ref=sr_1_1?s=books&ie=UTF8&qid=1396612863&sr=1-1&keywords=the+remaining (kind of zombie, not undead but similar vein)
Surviving the dead series http://www.amazon.com/No-Easy-Hope-Surviving-Dead-ebook/dp/B0064VVR0Q/ref=sr_1_4?s=books&ie=UTF8&qid=1396612906&sr=1-4&keywords=surviving+the+dead
A new World series http://www.amazon.com/New-World-Chaos-John-OBrien-ebook/dp/B004W0CL2Y/ref=sr_1_1?s=books&ie=UTF8&qid=1396612991&sr=1-1&keywords=a+new+world+series
I have enjoyed all of them, Day by Day, rushed the ending, and A New World has been up and down.
Edit: spelling
This is the first book in my husband's series and I believe it is very close to what you're looking for (you can get it in ebook, paperback, or audiobook). The main character, Jack, deals with finding, fortifying, and maintaining a safe place. While it is fiction, he tries to keep it as real as possible. The creatures aren't necessarily zombies; they're actually closer to the things in "I Am Legend" .