What Happens During a Kitchen Remodel Rough In Phase
October 7, 2026
QUICK ANSWER: The rough in phase is the stretch of a kitchen remodel after demolition and before drywall, when the plumber, electrician, and ventilation crew install everything that will live inside the walls, ceiling, and floor. That means new drain and supply lines, wiring and circuits, boxes for outlets and lights, gas lines, and the duct run for the range hood. Once the work is in place, the local building department inspects it while the framing is still open. Only after that inspection passes can insulation and drywall close the walls. Most rough in work takes one to two weeks, and it is the point in the project where changing your mind is cheapest.
The morning after demolition, the kitchen looks like a stage set with the back wall missing. The old cabinets are gone, the floor is bare, and the studs stand exposed with pipes, wires, and a rusted vent pipe running between them. Stand in that space with a coffee and look at the wall behind the old stove, and you finally see what has been hiding there for decades. A cluster of wires, spliced and stapled by three different hands over three different decades. That is the moment the rough in phase begins, and it is the least glamorous and most important week of the whole remodel.
What the Rough In Phase Actually Is
Rough in is the term builders use for installing the hidden systems of a room before any finished surface goes over them. In a kitchen, those systems are plumbing, electrical, and ventilation, and sometimes gas. Think of it as building the skeleton and nervous system before the skin goes on. Cabinets, countertops, tile, and fixtures are the finish work. Rough in is what makes the finish work function.
Where It Sits In The Schedule
Kitchen remodeling typically moves from planning and materials to demolition, framing changes, rough in, inspection, insulation, drywall, flooring, cabinets, countertops, and fixtures. Each stage depends on the previous work being completed.
How Long It Takes
A typical kitchen rough in takes about one to two weeks. Smaller projects may finish sooner, while relocated plumbing, electrical circuits, islands, inspections, or material delays can extend the schedule significantly.
Why The Work Is Called Rough
Rough work leaves plumbing, electrical boxes, and wiring unfinished but positioned correctly. Later, during trim out, faucets, outlets, switches, and light fixtures are connected and finished for use.
The Planning That Has to Happen Before a Single Pipe Moves
Rough in is where the design on paper becomes a set of exact measurements. Every outlet, drain, and vent has a location, and those locations come from decisions made weeks earlier. If the design is still fluid when the plumber arrives, the crew either guesses or stops, and both cost time.
Appliance Specifications
Before rough in begins, finalize appliance choices. Different amperage, water connections, or cutout dimensions change where circuits and plumbing must land. Use actual installation manuals to position outlets, water stubs, and drains correctly beforehand too.
Cabinet Layout And Heights
The cabinet drawing guides outlet heights, under cabinet lighting, sink placement, and supply lines. Changing cabinet layouts after rough in can require reopening finished walls, adding cost, delays, and unnecessary disruption later during construction projects.
Fixture And Lighting Plan
Pendants, recessed lights, and hood lighting each need properly positioned boxes and wiring. A detailed lighting plan lets electricians place everything accurately and allows switch locations to be finalized while studs remain easily accessible throughout.
The Conversation About Existing Conditions
Demolition often reveals conditions hidden from the original plan, including mismatched wiring, undersized drains, or water damage. During rough in, review discoveries, photograph open walls, and choose solutions before covering everything permanently up again completely.
Plumbing Rough In: Drains, Supply Lines, and Everything Under the Sink
The plumbing portion is usually the first trade through the room, because drain lines rely on gravity and have the least flexibility about where they can run.
Drain And Vent Lines
Sink and dishwasher drains, along with vent lines, must connect and slope correctly. Moving a sink can require new framing penetrations or venting, making layout changes more involved than homeowners often expect.
Hot And Cold Supply Lines
New supply lines serve sinks, dishwashers, refrigerators, and sometimes pot fillers. Each shutoff and stub out matches the final fixture, while pressure testing confirms the lines remain sound before walls are closed.
Gas Lines
Gas ranges and cooktops require properly sized lines with accessible shutoffs. Moving a range or switching from electric to gas may require new piping, which must be tested and carefully inspected for safety.
Water Efficiency
California requires water conserving fixtures for certain permitted remodels. Kitchen faucets may need to meet current flow limits when existing fixtures do not comply, making permit requirements relevant even for seemingly limited projects.
TIP: Before the plumber closes anything, take your own photos of every open wall from several angles, with a tape measure showing the distance from the floor. Years later, when you want to hang a heavy shelf or drill for a new outlet, you will know exactly where each pipe and wire runs behind the finished surface.
Electrical Rough In: Circuits, Boxes, and a Safer Kitchen
The kitchen is the hardest working electrical room in the house, which is why its rules are stricter than most. During rough in, the electrician replaces or adds the wiring that supports every appliance and outlet you will use for the next twenty years.
Dedicated And Small Appliance Circuits
Kitchen countertop receptacles typically need two 20 amp circuits, while appliances like dishwashers, disposals, microwaves, and range hoods may need dedicated circuits. Electric ranges or ovens commonly require separate 40 or 50 amp circuits.
Outlet Spacing And Placement
Countertop receptacles must follow spacing and height requirements, including outlets for islands and peninsulas. Electricians position boxes during rough in because correcting outlet locations after drywall requires opening finished walls again.
Shock And Fire Protection
Modern kitchen electrical requirements include ground fault and arc fault protection, along with tamper resistant receptacles in many locations. Requirements vary by code edition, so electricians follow the standards adopted by the local jurisdiction.
Lighting
California kitchen lighting must meet applicable efficiency requirements. During rough in, electricians position fixture boxes, switches, dimmers, and wiring, including power for under cabinet and toe kick lighting before cabinets arrive.
Panel Capacity
Adding induction ranges, second ovens, or larger refrigerators can increase electrical demand. During rough in, electricians check available panel capacity and determine whether an upgrade is needed before cabinets and finishes are installed.
Ventilation and Ductwork: The Part Most Homeowners Forget
Of all the systems in the rough in phase, the range hood duct is the one most often skipped in planning and most often regretted afterward.
Why The Duct Run Matters
A hood vented outdoors removes cooking odors, grease, and moisture better than recirculating models. Planning the duct during rough in allows a short, straight route with fewer bends, avoiding later cabinet or ceiling modifications.
What California Requires
California energy standards require kitchen exhaust to vent outdoors, with airflow requirements varying by home size and fuel type. Higher output hoods may require makeup air, while applicable sound limits also depend on airflow.
Where The Duct Goes In A Sacramento Area Home
Roseville, Lincoln, and Rocklin homes often provide attic space for roof or exterior wall routing. Older Carmichael or Fair Oaks homes may differ, while second story kitchens can require longer runs. Site conditions determine placement.
Bathroom And Other Fans
If remodeling affects an adjoining bathroom or laundry room, confirm those exhaust fans also vent outdoors. Rough in is the right stage to correct duct routing before walls and ceilings are closed.
WARNING: Never let anyone cover a range hood duct, gas line, or any open electrical box before the inspector has signed off. Covering work early can force the crew to tear out finished drywall so the inspector can see inside the wall, and unpermitted or uninspected work can cause problems when you sell the home or file an insurance claim.
The Rough Inspection: The Hold Point Before Drywall
Every rough in phase ends with the same event: an inspection by the local building department, while the walls are still open. This is a hold point. Nothing gets covered until it passes.
What The Inspector Looks At
Inspectors check drain slopes, venting, secured supply lines, pressure testing, gas piping, wire sizing, electrical boxes, and sealed duct connections. Rough inspections happen before walls close and may include plumbing, mechanical, structural, and electrical work.
When A Permit Is Needed
Painting and cabinet refacing are usually cosmetic and may not require permits. Moving plumbing, changing electrical systems, replacing countertops, or altering layouts generally can. Your contractor confirms requirements and obtains necessary permits before work begins.
How Long It Takes
Inspection timing depends on local workload. Some jurisdictions offer next day appointments, while others take several business days. Contractors often schedule inspections immediately after rough in to prevent delays between trades and subsequent construction stages.
If Something Fails
Failed inspections often involve correctable details, such as missing nail plates, loose straps, or improperly sealed duct joints. The crew makes the required fixes, then schedules reinspection before work continues beyond the inspection hold point.
What Happens After A Pass
After approval, insulation is installed where required, followed by drywall, taping, and finishing. Once surfaces are ready, the project progresses through paint, flooring, cabinets, countertops, and final fixtures until completion.
What You Can Do During Rough In to Keep the Project Moving
The homeowner has a bigger role in this phase than most people realize. Fast decisions keep the crew moving, and slow ones add days.
Walk The Open Walls With The Crew
Walk through the kitchen once boxes and stubs are installed. Compare their locations with the cabinet layout, and raise concerns about outlets, switches, or plumbing immediately.
Confirm Every Appliance Has Arrived Or Has A Spec Sheet
Have appliances or installation manuals available before rough in. Correct specifications help trades position connections accurately and prevent expensive problems caused by incorrect cabinet cutouts later.
Respond Quickly To Questions
When demolition reveals unexpected plumbing or wiring, crews need decisions quickly. Responding within a day helps maintain progress, while delays can hold up every following trade.
Plan For The Mess
Rough in creates noise, dust, and an unusable kitchen. Set up a temporary refrigerator, microwave, and hot plate elsewhere, while dust barriers help protect surrounding rooms.
Ask About Changes You Might Want Later
Consider future additions such as pantry outlets, USB connections, gas lines, or wall blocking. Adding these during rough in costs far less than reopening finished walls later.
Frequently Asked Questions
How long does the rough in phase last in a kitchen remodel?
Most kitchens take about one to two weeks for plumbing, electrical, and ventilation rough in, plus time for the inspection. Layout changes, a new island, or a panel upgrade can add days.
Do I need a permit and an inspection for kitchen rough in work?
If the remodel moves plumbing, changes circuits, adds gas lines, or alters the layout, a permit is generally required, and it brings the inspections with it. Cosmetic updates usually do not need one.
Can I change my layout after rough in is finished?
You can, but it usually means opening the walls and redoing some work, and it may require another inspection. Make design decisions final before the trades begin.
What is the difference between rough in and trim out?
Rough in is the hidden work inside walls, ceilings, and floors, such as pipes, wires, boxes, and ducts. Trim out is the finish work, such as installing faucets, outlets, switches, and fixtures.
Why does a kitchen need so many electrical circuits?
Kitchens run several high powered appliances at once. Sharing too few circuits trips breakers and overheats wiring, so countertop circuits and dedicated appliance lines are sized during rough in.
What can go wrong if rough in is rushed?
Outlets end up in the wrong spots, drains lose proper slope, and ducts get too many bends. Fixing these after drywall means cutting open finished walls.
Hidden Work Behind the Walls Deserves Attention
Once the drywall is painted and the cabinets are in, nobody sees the rough in work again, which is exactly why it deserves care. Correctly sized circuits, properly sloped drains, and a clean exterior duct run quietly serve a kitchen for decades. Shortcuts show up later as tripped breakers, slow drains, and greasy air. Asking who handles each trade, who books the inspection, and what was found behind the walls tells you how seriously the hidden work is being treated.
With 35
years of experience building and
remodeling kitchens
in Rocklin, Lincoln, and Roseville, CA, Hart Builds LLC
has learned that coordinated trades make the rough in phase smoother. When one team plans the plumbing, wiring, and ventilation together, the duct route is settled before cabinets are ordered and the inspection is booked the day the work wraps. Homeowners who value that coordination usually finish with a kitchen that works well, passes inspection the first time, and stays trouble free for years.
