Which Room Goes First When You Remodel a Kitchen and a Bathroom Together

The hollow knock of a hammer on a bare stud wall tells a crew a lot about which room can wait. Most of the work booked through kitchen and bath riverside madame and me for a kitchen remodeling and a bathroom together follows one rule about order, and that rule is set by the plumbing, not by taste. A house in Riverside, CA, has one main supply and one set of shutoffs, so the two rooms compete for the same days.
The bathroom usually opens first

A bathroom is small, and its wet work has the longest cure times. A shower pan has to be set, the membrane flooded and left, backer board hung, then tile and grout on separate days. None of that can be rushed, so the bathroom starts first and the kitchen demolition begins while the bathroom is sitting through its waiting periods.
What the kitchen does while the bathroom cures

While thinset and grout are curing, the kitchen is gutted down to studs, the old countertop is hauled out and the rough-in is exposed. A plumber who has already opened a bathroom wall is on site anyway, and a second room opened that same week saves a return trip.
Why finish work never overlaps
Tile cutting, drywall sanding and cabinet install do not share a day. Dust from porcelain tile cut with a wet saw settles on freshly primed walls, and a vanity carried through a hallway scrapes wet paint. The sequence on a two room job runs demolition, rough-in, inspection, close up, then finish in one room at a time, with the room that cures longest always closed first.
Inspection ties the two rooms together
A rough-in inspection looks at open walls, so both rooms need their pipes and wiring exposed on the same visit. If the bathroom walls are already closed in drywall when the kitchen is ready for the inspector, a second appointment is needed, and the kitchen waits on a calendar rather than on labor.
Heat and drying time in a Riverside summer
Summer heat changes the order a little. Thinset and mortar skin over fast when the temperature climbs on the Box Springs Mountains side of town in July, so tile gets set in the cooler morning hours with the windows closed against hot afternoon air.
Where the order can flip
The order flips when a kitchen has a failed drain or a leaking supply line that is damaging the floor. A kitchen with a bad drain goes first, because rot does not wait. A house with only one bathroom also changes the plan, since closing the only shower for three weeks is not livable, and that case is covered in a separate note on keeping one room usable. The default stands as a guide: the room with the most cure time opens first, and everything with an inspector in it is scheduled together.