Most homeowners never schedule a plumbing inspection — until something fails. That's the wrong approach, and it's consistently the more expensive one. Here's how often you should have your plumbing inspected and what it covers.
The General Answer
For most Knoxville homeowners: once every 2 years, with an annual inspection recommended if your home is 25+ years old, has a history of plumbing issues, or is on a well.
But frequency should be based on your home's specific risk factors — not a generic number.
Inspection Frequency by Home Age and Type
New Construction (0–10 years)
Modern PVC supply and drain lines, properly installed, have few early-life failure points. A plumbing inspection at purchase (if you didn't have one), and every 3–5 years thereafter, is sufficient. The main things to watch: water heater approaching the 10-year mark, supply lines under sinks (rubber braided lines degrade), and water pressure.
Mid-Age Homes (10–25 years)
Every 2 years is a reasonable baseline. Supply line failures (those braided hoses under sinks) become more common. Water heaters in this age range are approaching end of life. Drain lines may begin to show the effects of years of use.
Older Homes (25–50 years)
Annual inspection is strongly recommended. Homes in this range may have:
- Polybutylene pipe (gray flexible supply pipe, used 1978–1995) — a known failure material
- Older copper that's been subject to decades of water chemistry
- Cast iron drain lines that have begun to corrode and scale
Pre-1970 Homes
Annual inspection, with a camera inspection of drain and sewer lines if not done in the last 5 years. Pre-1970 Knoxville homes commonly have galvanized steel supply lines (which corrode from the inside and fail), cast iron drain lines, and clay sewer laterals. Knowing the condition of these systems before they fail is far less expensive than emergency response.
Homes on Well Water
Annual inspection of the well pump, pressure tank, and supply system. Well systems have unique failure points that municipal water users don't — pressure tank waterlogging, pressure switch failure, pump wear, and well casing issues. Annual checks are the standard for well-water properties.
What a Plumbing Inspection Covers
A thorough plumbing inspection from Honey Bear Plumbing includes:
- Water pressure test (40–80 PSI is ideal — too high stresses all components)
- All fixture shut-off valve operation
- Supply line condition under every sink and toilet
- Water heater — age, anode rod, T&P valve, connections, temperature setting
- Drain flow rate at every fixture
- Visible pipe condition in basement, crawlspace, and utility areas
- Sump pump test (if applicable)
- Gas connection visual inspection
- Signs of past or active leaks (staining, mineral deposits, soft drywall)
You receive a written report with findings rated by priority: Immediate (safety or imminent failure), Soon (address within 6 months), and Watch (monitor at next inspection).
Inspection Triggers Beyond the Schedule
Don't wait for the next scheduled inspection if:
- You're buying or selling the home
- You've had a significant leak or water damage
- You notice a sudden or unexplained spike in your water bill
- Multiple drains are slowing at the same time
- The water heater is over 10 years old
- You hear water running when everything is off
Bear Care Club — Annual Inspections Included
Honey Bear Plumbing's Bear Care Club membership ($99/year) includes an annual plumbing inspection plus priority scheduling and a discount on all repairs. For homeowners who want to stay ahead of problems rather than react to them, it's a practical and cost-effective option.
Frequently Asked Questions
Is a plumbing inspection worth it?
Yes — consistently. The average plumbing emergency repair costs $500–$3,000+. A plumbing inspection that catches an aging water heater, a supply line about to fail, or early root intrusion in the sewer line saves multiples of the inspection cost. For homes with older systems, it's not optional — it's basic maintenance.
What does a plumbing inspection cost in Knoxville?
A standalone plumbing inspection from Honey Bear Plumbing runs $150–$250 and includes a written report. Bear Care Club members receive their annual inspection as part of the $99 membership fee.
Do I need a plumbing inspection when buying a house in Knoxville?
A general home inspection is required by most mortgage lenders, but it covers plumbing at a surface level. For homes more than 20 years old, a dedicated plumbing inspection by a licensed plumber is highly recommended. We regularly perform pre-purchase inspections — and find things general inspectors miss.
How long does a plumbing inspection take?
Most single-family home inspections take 1.5–2.5 hours depending on the home's size, age, and complexity. We schedule a 2-hour window for most appointments.
Can I do my own plumbing inspection?
You can perform a basic check: look under sinks for moisture, check the water heater age (label on the side), test all shutoff valves, and run every fixture. But pressure testing, drain flow assessment, and identifying early-stage deterioration in pipes requires a licensed plumber. DIY is a supplement, not a substitute.
Schedule a Plumbing Inspection in Knoxville, TN
Honey Bear Plumbing performs plumbing inspections throughout Greater Knoxville and surrounding counties. Most appointments are available within 2–3 business days.
Call (865) 284-2424 or schedule online.