From the Flames by Andrew Grey

College professor and widower Willy Daugherty is trying to keep his life together for the sake of his kids, but when their apartment building catches fire, everything they have goes up in flames. In the middle of the night, he finds himself homeless and wondering what to do next. Thankfully one of the firefighters, Kevin St. Claire, not only rescues them from the building but comes to the hospital and offers them all a place to stay for the night.
Kevin is used to seeing people who’ve lost everything because of a fire, but something about the homeless father and two kids gets under his skin… and into his heart to fill a loneliness he didn’t even know was there. When he brings them home, his three dogs take to the family with gusto.

Then the fire that brought Willy and the kids into his life turns even more problematic. Code violations led to the fire spreading more quickly than it should have. As Willy and Kevin investigate, they come up against forces that would rather turn a blind eye. Can they protect the new family they’re building, or will it all go up in flames once more?