Plumbing prices in 2026: what parts and fixtures really cost

By Autumn Harris, Staxen. Updated 2026-09-08.

A builder-grade toilet costs $145 to $225 wholesale in 2026, and a 40 gallon gas water heater lands around $630 to $975 before installation. Half-inch PEX is still cheap at $0.37 to $0.58 a foot, which is why repipes pencil out even when labor does not get cheaper. Below are national-average supply-house numbers for the fixtures, pipe, and rough-in parts plumbers buy every week, then the installed ranges those parts turn into.

plumbing material costs, national average

Every material figure above is a national-average supply-house cost from the pricing dataset that ships inside Staxen. These are the numbers its AI estimator opens with before a contractor tunes them to their own counter pricing, and they cover material only, with no labor, overhead, or markup baked in. The installed job ranges are typical all-in contractor totals for 2026 US residential work, labor included. Regional pricing and commodity swings move both sets of numbers, so verify against your own supplier before bidding.

What typical plumbing jobs run installed

Tank water heater replacement: $1,400 to $3,200

Code catch-up is the swing: expansion tank, drain pan, seismic strapping, and venting corrections can add several hundred dollars past the swap itself.

Tankless conversion from tank: $3,500 to $7,500

Upsizing the gas line to 3/4 inch or larger, running stainless or PVC venting, and adding a condensate drain are what separate this from a like-for-like swap.

Toilet replacement: $350 to $900

A rotted flange or a wall-fed shutoff that crumbles when touched turns a one-hour job into three. Fixture grade moves the rest.

Whole-house repipe in PEX, 3 bed 2 bath: $4,000 to $12,000

Slab homes and two-story layouts cost more than crawlspace ranches. Drywall repair, if you carry it, can be a third of the total.

Main sewer line replacement: $3,500 to $15,000

Depth, length, and what sits above the line. Trenching under a driveway or mature tree is a different price than open lawn, and burst-lining versus open trench changes the math again.

Bathroom rough-in for a remodel: $2,000 to $6,000

Moving drain locations in a slab means saw cutting and concrete work. Keeping fixtures where they are keeps the price at the low end.

Fixture and pipe prices are fairly flat across the country because the big distributors price nationally; labor is what varies. A repipe that sells for $5,000 in Oklahoma City can sell for $11,000 in San Jose with nearly identical material cost on the truck.

Cost factors in plumbing work

Water heater efficiency rules

Federal efficiency standards keep pushing tank water heaters toward more insulation and, for larger electrics, heat pump technology. That has widened the gap between a $630 replacement and a $2,000-plus high-efficiency unit, and it is worth explaining on the estimate.

Pipe material choice

Half-inch copper at $2.90 to $4.50 per foot runs six to eight times the cost of PEX at $0.37 to $0.58. On a 400 foot repipe that is a four-figure material difference before the labor savings from crimp fittings even start.

Access and slab work

The same fixture set prices very differently over a crawlspace than in a slab. Concrete cutting, spoil removal, and patch-back belong as separate line items so the client sees why.

Permit and inspection scope

Water heater swaps, repipes, and sewer replacements are permitted work almost everywhere. Permit fees run $50 to $500 by jurisdiction, and failed-inspection trips are unbilled unless your contract says otherwise.

Fixture grade creep

The spread between builder grade and designer grade is wider in plumbing than almost any trade. A lav faucet exists at $82 and at $800. Pin the allowance in writing or the change orders will do it for you.

Frequently asked questions

Can I quote these numbers straight to a homeowner?

Not as your price. Material cost is the starting floor, and the quote on top of it has to carry your labor, drive time, insurance, licensing, and profit. A common plumbing structure is marked-up material plus a labor rate of $100 to $250 per hour depending on market, or flat-rate pricing built from both.

Why do tankless installs cost so much more than the unit price?

The heater itself runs $1,100 to $1,700, but a conversion usually needs a larger gas line, new venting rated for condensing exhaust, a condensate drain, and sometimes an electrical outlet at the unit. Those trades and parts routinely double the equipment cost, which is why installed conversions run $3,500 to $7,500.

How much PEX does a typical repipe take?

A 3 bedroom, 2 bath home commonly takes 350 to 500 feet of tubing split between 1/2 inch and 3/4 inch, plus 60 to 100 fittings. At 2026 prices that is only $250 to $600 in pipe and fittings, which is why repipe pricing is almost entirely a labor and access story.

What is the fastest way to turn a parts list like this into an estimate?

Describe the job out loud to Eddie, the estimator in Staxen, and it drafts priced line items starting from these same national averages. Your own numbers replace the defaults as you edit, and the client signs from a text link. Staxen is $59 per month per AI employee, or $149 per month for all three, and the first job is free with no card required.

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