How to use this worksheet

Walk the house with a flashlight, a phone camera and this list. For each item, write down the install date if you can find it on a label, receipt or inspection report, and note its condition. Where you cannot find a date, write unknown; an unknown age on a part known to wear out is itself a reason to replace it.

Water heaters, washing machine hoses and toilet connectors are the parts most likely to have been replaced at least once in a house built in the 1980s or 1990s, sometimes by a previous owner with no record. Photograph labels so you have them later for an insurer or a buyer.

Inventory

Copy this table into a notebook or spreadsheet and add a column for the date you checked.
ComponentWhere to find the dateCondition notes to recordReplace or call a pro when
Main supply pipe materialInspection report, pipe markingsPB, PEX, copper, CPVCPolybutylene is present
Pressure-reducing valveTag on the valve, plumber invoicePressure reading with no water runningPressure is high or climbing
Water heaterSerial number and label on the tankRust at the base, relief valve drippingTank is old, rusty or seeping
Expansion tankLabelTap test, waterlogged soundTank is full of water
Washer hosesPurchase receipt, hose markingsBulges, cracks, rust at crimpsAge unknown or several years old
Toilet connectorsRarely markedFraying, kinks, cracked nutsAny visible wear
Ice maker lineBehind the refrigeratorPlastic or braided, kinksPlastic tubing or age unknown
Dishwasher supply and drainUnder the sinkDrips, damp cabinet floorAny staining
Humidifier and condensate drainsHVAC service tagsScale, clogs, pump functionPump fails float test
Irrigation tap and backflowIrrigation recordsDrain valve operation, freeze cracksAny leak at startup
Sump pump, if presentPump labelRuns when float liftedPump is old or noisy

Photos to take while you are there

  • Every appliance label with model and serial numbers
  • The main shutoff and pressure-reducing valve from a distance, so others can find them
  • Pipe markings wherever pipe is visible
  • The underside of each sink cabinet
  • The water heater base and relief valve discharge

General information for Highlands Ranch, not a quote or professional advice. In an emergency, call 911.