How to cross check a General Contractor’s work on a condo remodel?

[Matt A.]

I’m about to spend around $20k-$50k hiring a general contractor to do some remodeling work on a condo in Oakland.

How do you recommend I cross check their work? I ask because even if it looks good to me visually, I don’t have the experience to fully check it for things like quality, completeness, or code compliance; nor do I know how to verify they successfully filed the correct permits.

For instance, do I hire some sort of Construction Consultant to cross check it? Any suggestions toward ones if so?