Galvanized Pipe Replacement Cost (2026): Repipe Prices
Galvanized pipe replacement costs about $4,000 to $15,000 to repipe a typical house with PEX, and roughly $8,000 to $20,000 with copper. Replacing a single bad section runs $150 to $600. Galvanized steel water pipes, common in homes built before the 1960s, rust from the inside. The result is weak water pressure, brown water and pinhole leaks. Once a house has several of those symptoms, a whole-house repipe is usually cheaper in the long run than chasing leaks one at a time.
Typical whole-house cost
$4,000 to $15,000
- Urgency
- Plan within months
- DIY difficulty
- Pro job
- Time to fix
- 2 to 7 days
- Prices
- US typical range
Last reviewed October 2026
Why galvanized pipes need replacing
Galvanized pipe is steel pipe dipped in a protective zinc coating. For decades it was the standard for home water lines, until copper took over in the 1950s and 1960s. Many homes built before about 1960 still have some or all of it.
The problem is what happens inside. Over 40 to 60 years, the zinc wears away and the steel underneath rusts. Rust and mineral scale build up on the inner walls, a bit like plaque in an artery. A pipe that started at three-quarters of an inch can end up with a passage the size of a pencil. That's why old galvanized homes so often have a shower that barely dribbles while the kitchen faucet works fine.
Eventually the walls thin enough to spring pinhole leaks, usually at the threaded joints, where the metal was cut thinner to begin with.
Signs your galvanized pipes are failing
Low water pressure
Especially on upper floors, at fixtures farthest from the main, or when two taps run at once. See low water pressure.
Brown or rusty water
Discolored water first thing in the morning, or after time away, that clears after running. It's rust flaking off inside the pipes.
Leaks at the joints
Damp spots, white crust or rust stains around the threaded fittings in the basement or crawl space.
One fixture worse than the rest
A single sink or shower that's much weaker than the others often sits on a badly clogged branch line.
Uneven shower temperature
Restricted lines can't keep the balance between hot and cold. Rule out a faulty shower valve or diverter too.
Gray, threaded pipes
Galvanized is dull gray, with threaded fittings. Scratch it with a key: steel stays silver-gray, and a magnet sticks to it. Copper and lead don't.
Galvanized pipe replacement cost by home size
Labor is roughly 70% of a repipe bill. Plumbers open small holes in walls and ceilings to fish new lines through, so the number of bathrooms and floors drives the price more than square footage alone.
| Job | Typical cost |
|---|---|
| Replace one section of galvanized pipe | $150–$600 |
| Replace the main water supply line | $1,500–$5,000 |
| Small home (1 bath, under 1,500 sq ft), PEX | $4,000–$7,500 |
| Medium home (2 baths, 1,500–2,500 sq ft), PEX | $7,000–$12,000 |
| Whole-house repipe with PEX | $4,000–$15,000 |
| Whole-house repipe with copper | $8,000–$20,000 |
| Drywall patching after a repipe | $500–$3,000 |
| Permit and inspection | $100–$500 |
Ranges are typical US prices compiled by FixHomeCost from published cost guides. Ask whether a quote includes drywall repair, painting, permits and the water heater connections. They're often left out, and they add up.
PEX or copper for the new pipes?
Most repipes today use PEX, a flexible plastic tubing. It snakes through walls with fewer openings, has fewer joints, resists freeze damage and costs far less to install. That's why PEX repipes run 30 to 60% cheaper than copper for the same house.
Copper still makes sense if you want metal throughout, if pipes run in hot or sunny exposed areas, or if local code or your own preference calls for it. It lasts a very long time, but costs more in both materials and labor.
Either one is a big improvement over 60-year-old galvanized steel. For a detailed side-by-side comparison, see PEX vs copper.
Partial replacement or a full repipe?
Replacing just the worst sections is cheaper today. It makes sense in a few situations:
- Only one branch is clogged or leaking, and the rest tests fine
- You're remodeling one room and the walls are already open
- You plan to sell soon and need to fix an urgent leak
But the rest of the galvanized pipe is the same age, and it will keep failing. Connecting new copper directly to old galvanized also speeds up corrosion at that joint, unless the plumber uses a proper dielectric union. A full repipe usually wins when:
- Pressure is weak in several rooms
- You've had two or more leaks in the last few years
- The water runs rusty from several taps
- An insurer has flagged the plumbing, or is charging more for it
- 1
Confirm what you have. Check exposed pipes in the basement, crawl space or under sinks. Gray, threaded and magnetic means galvanized.
- 2
Test your water pressure with a $10 gauge on an outdoor spigot. Normal is about 40 to 60 psi. Then compare the flow at different fixtures.
- 3
Have your water tested for lead if you have galvanized lines, especially if your service line might be lead.
- 4
Get three repipe quotes. Ask for PEX and copper prices side by side, and a clear list of what's excluded.
- 5
Plan for a few days of limited water and some wall patching. Most crews restore water each evening.
Common questions
How much does it cost to replace galvanized pipes?
A whole-house repipe typically costs $4,000 to $15,000 with PEX, or $8,000 to $20,000 with copper. Replacing one section costs about $150 to $600.
How long do galvanized pipes last?
Usually 40 to 60 years. Most galvanized plumbing still in homes today is past that, which is why low pressure and rusty water are so common.
Are galvanized pipes dangerous?
Mainly they cause leaks, low pressure and rusty water. They can also hold and release lead picked up from an older lead service line, so testing your water is a good idea.
Can I replace only part of my galvanized plumbing?
Yes, and it's cheaper upfront, but the remaining pipe is the same age and will keep failing. A full repipe usually saves money if you have problems in several places.
Will homeowners insurance pay to replace galvanized pipes?
Insurance usually covers sudden water damage from a burst pipe, not replacing old pipes. Some insurers charge more for, or refuse to cover, homes with galvanized plumbing.
How long does a whole-house repipe take?
Most homes take 2 to 7 days, depending on size and access. Drywall patching and painting can add a few days more.
Related guides
This is general information, not a professional inspection. See how we research costs.