The worksheet
| Item | Options to look for | Your kitchen |
|---|---|---|
| Sink | Single basin, double basin, farmhouse, island | |
| Trap material | White or black plastic, chrome or brass metal | |
| Trap arm into wall | Plastic, threaded gray metal, black metal | |
| Disposal | None, or present (note make and age if known) | |
| Dishwasher drain route | Into disposal, into tailpiece, air gap on counter, high loop | |
| Vent type | Unknown, wall vent, air admittance valve under sink | |
| Outdoor cleanout | Location, cap condition | |
| Foundation | Slab or raised with crawlspace | |
| Year built and remodel year | From records or the seller |
Terms on the worksheet
- Air admittance valve
- A one-way vent valve sometimes installed under a sink where a wall vent is difficult. Whether one is allowed depends on local rules.
- High loop
- Dishwasher drain hose routed up to the underside of the counter before it connects.
- Cleanout
- A capped opening that gives access to the drain line for cleaning.
- Slab foundation
- The house sits on concrete; drains run under the floor.
How to fill it in
Look under the sink
With a flashlight, note materials and connections. Take photos.
Walk the outside
Look along the foundation for a capped pipe near the ground, often facing the street.
Check your records
Purchase documents or permits may show the year built and remodel dates.
Ask at the next visit
Have the plumber fill in anything you could not identify.
Why material matters
Many Fullerton homes from the 1950s through the 1970s sit on slabs with original cast-iron or galvanized drain lines, and their sewer laterals may be cast iron or clay. Knowing that before a plumber arrives helps them choose a cable head, decide whether jetting is appropriate and plan for corroded fittings.
Common questions
How can I tell plastic from metal pipe?
Plastic drain pipe is usually white or black and light. Metal is heavier, may show rust or threads, and sounds solid when tapped.
What if I cannot find a cleanout?
Some older homes lack an accessible one. Note that on the worksheet; a plumber can advise.
Should I update the worksheet after a repair?
Yes. Write down what was replaced, with the date and the contractor's license number.
General information for Fullerton, not a quote or professional advice. In an emergency, call 911.