Repiping and pipe replacement
Repiping, Polybutylene and Galvanized Pipe Replacement in Bothell, WA
Whole house and partial repipes in PEX and copper across 98011, 98012 and 98021. We tell you honestly whether you need one, because in this market a repipe is the most oversold job there is.
You probably do not need a whole house repipe for one leak. You may genuinely need one if you have grey polybutylene stamped PB2110, which was made from 1978 to mid 1995 and is common in Canyon Park and Thrasher Corner, or galvanized steel supply that is corroding shut, common in 1950s to 1970s Maywood and Queensborough. A whole house repipe is a five figure job in this market, so get a second opinion before you approve one. We give one free on any written quote over 5,000 dollars.
The honest version
Most repipe quotes in this market are written on houses that do not need one
We are going to lead with the thing that costs us money to say.
A whole house repipe is one of the largest single tickets in residential plumbing, and it is diagnosed and sold in the same visit by the same person. That is a structural conflict of interest, and the public record around Bothell shows what it produces. Documented complaints against large plumbing companies operating in this market include a homeowner quoted approximately 42,000 dollars for a whole house repipe on a claim of severe buildup, where the crew started work immediately and on day three discovered the real problem was a failed heating element in the water heater. Another homeowner was quoted around 15,000 dollars for a full line replacement after an incomplete diagnosis, and a different plumber isolated and fixed the actual fault for far less. One customer reported being pressured into unnecessary work when the real fix was a 50 dollar copper hose.
When it is genuinely warranted
The four cases where a Bothell house really does need repiping
1. Polybutylene, and Canyon Park is full of it
Polybutylene was manufactured from 1978 to the middle of 1995, production ended in mid 1996, and it went into as many as 10 million American homes. It is usually grey, though it also came in white, silver, black and blue, and it is typically stamped PB2110. The failure mechanism is that certain disinfectants react with the material and cause it to flake apart at any point in the system, which is why failures are unpredictable rather than progressive. Class action payouts reached roughly a billion dollars.
Bothell relevance: the 1992 Canyon Park annexation added about 11,400 residents, and the Snohomish County side built out heavily through the 1980s and 1990s. Canyon Park and Thrasher Corner sit squarely inside the polybutylene window. Look at the pipe entering your water heater, or under a bathroom sink. If it is grey plastic, get it identified properly.
2. Galvanized steel supply, and the King County core is full of that
Maywood, Beckstrom Hill, Queensborough and the older Westhill streets are 1950s to 1970s ramblers and split levels. Galvanized supply corrodes from the inside, narrowing the bore until flow drops. The tell is weak pressure at the upstairs shower that gets worse over years, discolored water on first draw, and pressure that collapses when a second fixture opens. That is not a city problem and a pressure booster will not fix it, because the restriction is inside your own pipe.
3. Repeated pinhole leaks across different runs
One pinhole is a repair. Three or four across different runs, on pipe of the same age, is a pattern. Local water is soft and low in alkalinity, roughly 20 mg/L at a pH near 8.0 to 8.2, the chemistry profile researchers associate with copper pitting risk, which is why Seattle and Everett both dose for corrosion control. Causation remains unsettled in the literature, so we treat a cluster of leaks as evidence and a single leak as a single leak.
4. Pre 1985 lead solder, if you want it gone
Northshore Utility District own water quality report states that homes built or replumbed with copper pipe and lead based solder prior to 1985 are considered high risk. Federal lead solder restrictions arrived in 1986. Measured results locally are well under the 15 parts per billion action level, with NUD reporting 3.0 ppb and Alderwood 1.3 ppb with zero homes over the limit, so this is a preference rather than an emergency. A certified filter at the kitchen tap is the cheap version.
Materials
PEX or copper, priced both ways
| PEX | Copper | |
|---|---|---|
| Cost | Lower material and labor. Fewer connections, faster install. | Higher on both. More fittings, more labor hours. |
| Freeze behavior | Expands somewhat before splitting, which matters in a vented Bothell crawlspace. | Splits. Insulation is not optional either way. |
| Local water chemistry | Unaffected by the low alkalinity profile. | The material the pitting research concerns. |
| Disruption | Flexible runs mean fewer wall openings. | Rigid runs, more drywall. |
| Lifespan | Long, though UV sensitive so it must not be exposed. | Long, and proven for a century. |
| Resale perception | Now standard and well accepted. | Still preferred by some buyers and inspectors. |
We price both. Anyone who offers only one material without explaining the trade off is quoting what suits their crew rather than what suits your house.
What it costs
Repiping prices in Bothell
Repiping sits at the top end of residential plumbing, and it is exactly where second opinions pay for themselves. Consumers Checkbook, the nonprofit that price shops the Puget Sound market undercover, found that getting three bids saves about 300 dollars on average even on small jobs, and on identical water heater installations quotes ranged from 898 to 1,800 dollars. On a five figure repipe, that spread is proportionally far larger.
| Job | Typical range |
|---|---|
| Single pipe repairWhat most leak calls actually need | Usually inside a 284 to 760 dollar service call |
| Burst pipe repair | 1,000 to 3,500 dollars |
| Partial repipeOne bathroom, one run, or the galvanized section only | Scoped and quoted individually |
| Whole house repipeFive figures in this market. Second opinion strongly advised. | Quoted after diagnosis, itemized |
| PermitRequired for replacing concealed pipe under BMC 20.02.095 | Itemized separately, never buried |
| Drywall repairAsk whether it is included. It frequently is not. | Stated on the quote either way |
Permits and code
What a legal Bothell repipe involves
Bothell adopted the Uniform Plumbing Code under BMC 20.02.070, and Washington is on the 2021 UPC as adopted by WAC 51-56-003, effective 15 March 2024.
A repipe needs a permit. Bothell Municipal Code 20.02.095 exempts stopping and repairing leaks in drains, water, soil, waste or vent pipe, but it explicitly states that replacement of concealed pipe requires a permit. A repipe is concealed pipe replacement by definition. Bothell processes it through the regional MyBuildingPermit.com portal. Outside city limits, in Bothell East, Bothell West and unincorporated Snohomish County, it goes through Snohomish County Planning and Development Services, whose guidance is that any work on the water supply system requires a permit, with water piping tested and approved before it is concealed.
Ask to see the permit before backfill or drywall closes anything up. Inspection is the free second opinion the city gives you, and customers in this market cite passing inspection as a trust signal for good reason.
Straight answers
Repiping questions from Bothell homeowners
How do I know if my Bothell house has polybutylene pipe?
Look at the pipe entering your water heater or under a bathroom sink. Polybutylene is usually grey, though it also came in white, silver, black and blue, and it is typically stamped PB2110. It was manufactured from 1978 to mid 1995, which puts Canyon Park and Thrasher Corner homes from the 1980s and 1990s squarely in the window.
Do I need a whole house repipe for one leak?
No. One pinhole is a repair. Several pinholes across different runs on pipe of the same age is a pattern worth discussing. Documented complaints in this market include a 42,000 dollar repipe started on a house whose actual fault was a failed water heater element, so if a leak call becomes a five figure quote in the same visit, get a second opinion.
Why is my upstairs water pressure so weak?
In 1950s to 1970s Maywood, Beckstrom Hill and Queensborough homes it is usually galvanized steel supply corroding from the inside and narrowing the bore. The tell is that it worsens over years, first draw water is discolored, and pressure collapses when a second fixture opens. A booster pump will not fix it, because the restriction is inside your own pipe.
PEX or copper for a repipe in Bothell?
Both work. PEX costs less, installs faster with fewer wall openings, and handles a freeze slightly better in a vented crawlspace, which matters here. Copper costs more, is proven for a century, and some buyers and inspectors still prefer it. We price both, and any contractor offering only one without explaining the trade off is quoting what suits their crew.
Does a repipe need a permit in Bothell?
Yes. BMC 20.02.095 exempts repairing leaks but explicitly requires a permit for replacement of concealed pipe, which is what a repipe is. Bothell processes it through MyBuildingPermit.com. In unincorporated Snohomish County it goes through Snohomish County Planning and Development Services, and water piping must be tested and approved before it is concealed.
Is drywall repair included in a repipe quote?
Ask, because frequently it is not, and it is a substantial cost. A quote that cannot be broken into labor, parts, permit and finish work is exactly the bundled pricing pattern behind most complaints in this market. Ours states it either way.
Should I repipe because of lead solder in an older house?
It is a preference rather than an emergency. Northshore Utility District considers homes built or replumbed before 1985 high risk for lead in tap water, but measured results locally sit well under the 15 ppb action level, at 3.0 ppb for NUD and 1.3 ppb for Alderwood. Running the tap 30 seconds after it has sat, plus an NSF/ANSI 53 certified filter at the kitchen tap, is the cheap version.
How long does a whole house repipe take?
Typically several days for a standard Bothell single family home, longer if drywall and finish work are included, and longer again if the house is occupied throughout. The permit and inspection steps add scheduling time, and no honest contractor promises a one day whole house repipe.
Related
Other things we fix in Bothell
Leak Detection & Pipe Repair
Pinhole leaks, crawlspace leaks, and the free meter test you can run yourself first.
Water Pressure, PRV & Expansion Tanks
The Alderwood pressure reduction project, and why your relief valve drips.
Water Heater Repair & Replacement
Tank, tankless and heat pump. Plus the PSE and Snohomish PUD rebate deadlines nobody explains.
24 Hour Emergency Plumber
Burst pipes, sewer backups and no-water calls, answered around the clock across 98011, 98012 and 98021.
Drain Cleaning & Clogged Drains
Cleared through a cleanout, then cameraed so you see the line is actually clear.
Sewer Repair & Side Sewer Replacement
Camera first, permit pulled, and the footage handed to you before anyone quotes a replacement.
See the Bothell plumbing permit guide for the concealed pipe rule in full.
Service area
- 98011
- 98012
- 98021
- Kenmore
- Woodinville
- Mill Creek
- Brier
- Lynnwood
- Bothell East
- Bothell West
Been quoted a repipe?
Bring us the written quote and we will give you a free second opinion before you sign anything.