here the handwashing sink has to be a minimum of 4' away or separated by a partition,lights have to be sealed(covered),you smoker has to be enclosed- whic means mosquito netting around a party canopy works,ventilation system,your 3 bay sink has to be large enough to fully immerse your largest cutting board(we use disposable),you cannot use your home kitchen for anything unless it's certified for restaurant use & has a separate exit not available to the general public..etc..etc...
but what i see people actually getting away w/ on the roadside..

the health dept. doesn't work wkends