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The residential streets surrounding downtown Hillsboro — near Shute Park, along Baseline Road, and through the neighborhoods that predate the tech industry’s arrival — contain homes from the 1950s and 1960s that were plumbed with galvanized steel supply lines. These pipes have now been in continuous service for 60 to 70 years, and the internal corrosion has reached the stage where water flow is materially restricted. A homeowner on Walnut Street or Lincoln Street who notices that the kitchen faucet takes twice as long to fill a pot as it did five years ago is almost certainly dealing with galvanized pipe restriction, not a fixture problem.
Repiping these older Hillsboro homes from galvanized to PEX restores water pressure to modern standards and eliminates the rust particles that discolor tap water. The homes near Shute Park are typically single-story ranches with accessible crawl spaces — an ideal configuration for efficient PEX routing. Our team can complete most of these homes in a single day, pulling the new PEX through the crawl space and making only the necessary wall penetrations to connect each fixture. The difference is immediate: strong, clean water at every tap, with a system rated to last another 50 years.
Schedule a Hillsboro repiping assessment
Hillsboro’s Tanasbourne and AmberGlen neighborhoods were built during the 1990s and 2000s with copper supply lines that are now 20 to 30 years old. While this is younger than the typical copper end-of-life, these neighborhoods are entering the age range where the first signs of internal corrosion can appear — particularly on hot water lines, where elevated temperatures accelerate the chemical interaction between copper and the water flowing through it. A pinhole leak on a second-floor hot water line in an AmberGlen townhome can drip through the ceiling into the unit below before anyone notices the damage.
Homeowners in Tanasbourne and AmberGlen should watch for green patina forming on visible copper connections, small water stains on ceilings below bathrooms, or a single pinhole leak that seems minor but signals broader internal deterioration. A first pinhole leak does not necessarily mean the entire system needs immediate replacement, but it does warrant an inspection to determine whether the corrosion is localized or systemic. When multiple fixtures show signs of pipe deterioration, proactive repiping with PEX prevents the cascade of leaks and water damage that follows.
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Hillsboro’s water comes through the Joint Water Commission, which sources water from the Hagg Lake and Barney Reservoir systems in the Coast Range foothills. This water has a slightly different mineral profile than Portland’s Bull Run supply — it carries moderate mineral content that can affect how galvanized and copper pipes age over time. The minerals are not harmful to drink, but they contribute to the scale buildup that gradually narrows galvanized pipe interiors and can interact with copper in ways that promote localized pitting and eventual pinhole formation.
PEX is completely unaffected by water mineral content. It does not scale, pit, or corrode regardless of what is dissolved in the water flowing through it. For Hillsboro homeowners repiping from galvanized or copper, this mineral immunity is one of PEX’s most relevant advantages. The new system will deliver clean water at full pressure for decades without the progressive deterioration that caused the old pipes to fail. Homeowners in South Hillsboro’s Reed’s Crossing and other newer developments already benefit from PEX — repiping older Hillsboro homes simply brings them to the same modern standard.
Learn about PEX repiping
Many Hillsboro homeowners discover their pipe system needs attention during a planned renovation — a kitchen remodel in a Tanasbourne home reveals corroded copper behind the walls, or a bathroom addition in a Shute Park ranch requires connecting to galvanized mains that can barely supply the existing fixtures. These renovation moments present an ideal opportunity for whole-house repiping because walls are already open, contractors are already on site, and the homeowner is already prepared for a construction timeline. A kitchen remodel in a Tanasbourne home reveals corroded copper behind the walls, or a bathroom addition in a Shute Park ranch requires connecting to galvanized mains that can barely supply the existing fixtures.
Sarkinen Plumbing coordinates with general contractors and kitchen and bath remodelers throughout Hillsboro to integrate repiping into larger renovation projects. When walls are open for a kitchen gut, we repipe the entire house — not just the kitchen — through the same access points. The incremental cost of repiping during a renovation is significantly lower than repiping as a standalone project because the wall access and drywall repair are already part of the renovation scope. For Hillsboro homeowners planning any remodel in a home with aging pipes, asking about repiping coordination during the planning phase can save thousands of dollars and prevent the frustration of opening walls again a few years later when the rest of the pipe system catches up.
Coordinate repiping with your renovation
A whole-house repipe in Hillsboro requires a plumbing permit through Washington County, and Sarkinen Plumbing handles the entire permit process as part of every project. The permit ensures that the new PEX system meets current Oregon Plumbing Code requirements for pipe sizing, support spacing, fixture connections, and pressure regulation. Our familiarity with Washington County’s inspection process means Hillsboro projects pass inspection on the first visit, keeping the project on schedule and avoiding the delays that unpermitted or improperly installed work can cause.
Hillsboro repiping costs range from $4,000 to $9,000 for a standard PEX installation, depending on the home’s size, number of fixtures, and accessibility. The investment returns value through eliminated repair costs, prevented water damage, improved daily water quality, and enhanced resale positioning. In Hillsboro’s active real estate market — where tech-industry buyers expect homes in excellent condition — a documented PEX repipe with a current permit and passing inspection positions the home favorably against comparable listings. We provide complete documentation that becomes a permanent asset for the homeowner.
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The neighborhoods most likely to need repiping are those near downtown Hillsboro—along Baseline Road, near Shute Park, and in the areas built during the 1950s and 1960s. These homes often have galvanized steel pipes that are now 60 to 70 years old and heavily corroded.
Yes. Repiping is an excellent time to add supply lines for a new bathroom, kitchen upgrade, or additional fixtures. Our team designs the new pipe layout to accommodate any planned additions, saving you the cost and disruption of a separate plumbing project later.
Most Hillsboro repiping projects take two to three days for a standard-sized home. Larger homes with more fixtures or complex layouts may take up to four days. Water service is restored each evening so you can use your home normally outside of work hours.
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