Plumbing Checks Every Homeowner Should Run Before Listing

https://images.pexels.com/photos/6419128/pexels-photo-6419128.jpeg

Thinking about putting your house on the market this year?

Here’s some useful knowledge to have before that first buyer walks through your front door: Home inspections are killing more deals than anything else these days. According to a recent survey from Redfin agents, 70.4% of aborted purchases were due to inspection or repair problems.

Not financing. Not cold feet. Repairs.

And plumbing sits right near the top of that list.

The good news?

Nearly every homebuyer-turning-plumber problem you see scaring away buyers exists — and can be fixed — weeks before the listing pictures are taken.

What you’ll uncover:

Why plumbing kills more deals than you think
The leak detection tests to run first
A fixture-by-fixture walkthrough of the house
What to repair and what to leave alone

Why Plumbing Scares Buyers More Than Anything Else

A buyer can look past a tired kitchen. Paint is cheap. Carpet is cheap.

Water is not.

Buyers don’t think, “Oh good, water damage!” When their inspector writes “possible active leak” or “signs of past water damage” on his report. They think mould, rotten subfloor and a repair bill that’s going to have no ceiling. Water damage/frost accounts for about 22% of home insurance claims. Which average slightly above $15k. Buyers know that. Their agents know that too.

That’s precisely why a thorough round of residential plumbing maintenance is one of the highest ROI tasks a seller can perform before listing. A certified crew like Integrity plumbing and maintenance can perform a whole leak detection check up of the supply lines, drains, fixtures and water heater, then provide you with a written report on what was discovered and repaired. When you do this, 2 things happen. Little leaks are repaired before they become expensive. You also enter into negotiation with documentation that the plumbing passed inspection.

That paperwork is worth far more than most sellers realise.

Start With The Water Meter Test

Before touching a single tap, do this…

Turn off all water-using appliances in your home. Dishwasher? Off. Washer? Off. Ice maker? Off. Flushing? Anyone? Nope. Now read your water meter and record the number.

Come back two hours later and read it again.

If that number changes, water is leaking somewhere. Seriously, that is how simple it is. This is the best leak detection method for the homeowner who doesn’t want to use any tools.

Quick tip: compare your last few water bills. If one bill seems to be creeping up while your water usage habits haven’t changed, you most likely have a stealthy leak.

Why you should care: the typical home wastes nearly 10,000 gallons per year due to leaks and about 1 in 10 homes leak 90+ gallons daily. That is lost revenue and hidden damage lurking behind your walls.

Check Every Toilet In The House

Toilets are the sneakiest water wasters in any home.

Put some food colouring in the tank of each toilet. Wait 15 minutes without flushing. If the bowl is coloured, you have a silent leak caused by a worn flapper.

Flappers cost almost nothing and take minutes to swap out.

While you are down there, check:

The base for any rocking or movement
Discolouration on the floor around the pan
Damp patches or staining on the ceiling below
How quickly the tank refills after a flush

If your toilet rocks, chances are you have a failed wax seal. That’s exactly what an inspector is going to write up BIG TIME.

Look Under Every Sink

Grab a torch and open every cabinet in the house.

You’re looking for twisted wood, white mineral buildup on the fixtures, rust circles, spongy areas and that smell of mildew that indicates moisture has been trapped for awhile. Turn the faucet on for a minute and closely observe the trap and supply lines.

Then dry everything with paper towel and check again a day later.

If you see fresh stains on dry materials, you have an active leak. Older staining with no fresh water likely means a leak that happened years ago and was repaired — but be prepared to explain why, because they will ask.

Test The Water Pressure And Drainage

Here is something most sellers never think about…

Home inspectors look at taps. They stroll through a home and flick switches on. Low pressure or a sluggish drain creates an immediate feeling that pipes are worn out and overlooked.

Walk through the house and make sure that:

Hot and cold both come through strongly
Two fixtures can run at once without the pressure dropping
Sinks, showers and baths drain away without pooling
Nothing gurgles, knocks or bangs when a tap is shut off

Gurgling drains usually indicate a venting issue. Knocking pipes typically mean loose brackets or water hammer. Neither problem is costly to repair but both can be alarming to the untrained ear.

Inspect The Water Heater

The water heater tells a story, and buyers read it.

Check the date sticker first. Most tanks have an expected life of about 8-12 years so if it’s older you are already red flagged. Then look the base over for rust, look for corrosion at the connections and ensure the temp/pressure relief valve isn’t weeping.

Don’t forget sediment build up either. A rumbling tank or tank that drips rusty hot water needs to be flushed. An easy DIY project compared to explaining a shower that runs cold mid-stream during a showing.

Do Not Forget The Outside

Plumbing does not stop at the back door.

Circle the yard and inspect outdoor faucets for drips and fittings. Observe the ground over the main line for unusually green or soggy grass during dry spells. That’s always a tell-tale sign of a buried leak.

If your home is older or if you have big trees on your property then you owe yourself every penny of the cost of a sewer camera inspection. Tree root intrusion is one of the few plumbing conditions that can kill a sale outright, and discovering it first puts you in control.

What To Fix And What To Leave Alone

Not everything needs doing.

Leaks that should be fixed ASAP: active leaks of any size, running toilets, dripping taps, slow drains, corroded shut-off valves, water stains and anything else that has already caused damage.

Consider twice: whole house repiping, tossing out a perfectly good water heater just because it is old, or changing fixtures just for cosmetic reasons.

The goal isn’t a perfect plumbing system. The goal is an inspection report that doesn’t have scary stuff written on it.

Tying It All Together

Listing your house for sale is stressful enough without losing a buyer due to an undiscovered leak.

Test the meter for a weekend, flush toilets, run sinks, check pressure and test the water heater. Hire a licensed plumber to do anything you don’t feel comfortable testing yourself. Place all receipts in one folder.

Then hand that folder over when the offers start arriving.

Buyers breathe easy when a seller can demonstrate that the boring tasks have already been taken care of — and a buyer who breathes easy is much less likely to walk away.

Last Updated: September 2026