Jenna and the Lightning Beast by Kari Kilgore

Even Superheroes Hate Renovations
Jenna accepts a job that takes confidentiality to the extreme: a major remodel on a minor superhero's lair.
The only real secret? How Earth Worm can afford to buy everyone's silence, plus labor, materials, and lodging.
Trouble builds on the horizon before the job gets started.
Will a minor villain trying to break into the big time undermine them all?

An excerpt from Jenna and the Lightning Beast:
Staying Grounded in a Strange Situation

Kevin laughed. "Nothing usual about being whisked away to a secret location on a secret project, is there? Everyone in the city knows more about what's going on than we do."

The others gathered and introduced themselves, adding a Georgia highway department engineer, a plumber, and a home security expert to go with the inspector and insurance agent.

And between the eight of them, still no real idea what they were there for.

"I know we're not supposed to know," Kim said, "but I'm pretty sure this particular homeowner has to get the whole thing started. I don't see a doorbell we can ring."

Jenna leaned forward, trying to peek inside the tinted passenger window of the van that hadn't moved since the motor stopped.

"Unless she drove us up here."

Everyone jumped at a rich, sultry voice from behind them.

"She didn't drive you. Nobody did."