Shutoff Valve Condition
Original multi-turn compression angle stops on pre-1990s homes often fail when first closed. We quote a quarter-turn replacement upfront so it isn't a mid-job surprise.
Sink Installation & Replacement
Kitchen and Bathroom Sink Installation and Replacement for East Metro Homes
Kitchen and bathroom sink installation and replacement across the east metro. Twin City Pipeworks handles supply lines, drains, and corroded shutoff valves with upfront per-task pricing. Book online.
Prefer to call or text? 651-247-4495
5.0 · 482 Google reviews
Licensed Master Plumber
Fully Insured
- 482+
- Five-Star Google Reviews
- 14+
- Years in the Trade
- 5.0
- Rated on Google
- 100%
- Licensed & Insured
About Twin City Pipeworks
Why Homeowners Trust Us for Sink Installation & Replacement
You bought a new kitchen or bathroom sink and need it installed, or your old basin is cracked, stained, or corroded and it's time to replace it. The sink swap itself is usually the quick part. What slows the job down in this region is what sits underneath: on homes built before the mid-1990s across the east metro and St. Croix Valley, we routinely find seized angle stops and mismatched 3/8-inch compression fittings that have to be dealt with before the new sink is watertight. Twin City Pipeworks installs and replaces kitchen and bathroom sinks for homeowners here, and we price the shutoff valve and supply-line work per task upfront so you're not surprised mid-job. Licensed in Minnesota, fully insured, and backed by a 1-year warranty on every install. Book online to get on the schedule, or get an instant quote on a common repair with our online tool.
Dave has been doing this work in the east metro for 20 years, and the pattern is consistent: the sink drops in fine, but the angle stop under it hasn't been turned since the house was built and won't seat again once it's touched. Rather than nurse an old valve along and hope, we replace the shutoff, fit a supply line that actually matches your new faucet's connection, and confirm the drain body seats cleanly on your cabinet's existing hole before we call it done. Every home is a little different, so we give you upfront, per-task pricing before any work begins instead of an open-ended estimate.
Kitchen Sink Installation
A kitchen sink installation is rarely just dropping the basin in the hole. We set the sink (drop-in or undermount), seal it to the countertop, connect the drain assembly and the P-trap, hook up the supply lines to the faucet, and check the shutoff valves under the cabinet while the water is off anyway. Kitchen basins are deeper and heavier than bathroom sinks, so the drain and trap geometry has to line up with your existing waste arm or it leaks the first time you fill the basin. If you're replacing a sink and keeping the faucet, we transfer it over. If the faucet is new too, we handle the faucet and under-sink fixture work at the same visit. And if there's a garbage disposal under the sink, we reconnect it to the new drain body or let you know upfront if it needs attention.
Most kitchen sink swaps that keep the same basin footprint wrap up in a couple of hours. Changing from a drop-in to an undermount, or fitting a larger basin than the cutout allows, is a bigger job because the countertop opening and the mounting are different. Book online to get on the schedule, or run a common swap through our instant quote tool first.
Bathroom Sink Replacement
Bathroom sink replacement covers pedestal sinks, vanity-top and drop-in basins, and undermount bowls set into a stone or laminate vanity top. The connections are the same idea as a kitchen sink but tighter: bathroom cabinets are shallow, the shutoff valves are usually smaller, and the pop-up drain assembly has more parts that have to seal in sequence. Replacing a bathroom sink is a common request when a vanity gets updated, when a basin cracks, or when a homeowner is tired of a stained builder-grade bowl.
"On a bathroom sink swap, the pop-up drain and the tailpiece alignment cause more callbacks than the sink itself. We set the drain, seal it, and fill-test the basin before we leave so it isn't leaking behind a closed vanity door two days later."
If the vanity is staying and only the sink is changing, the job hinges on whether the new basin matches the existing top's opening. If the whole vanity top is being replaced, we coordinate the faucet holes and the drain location so everything lines up. Either way we check the angle stops and supply lines under the vanity, because a shallow bathroom cabinet is a miserable place to discover a seized valve after the new sink is already sealed in. Book online and we'll confirm the fit before we schedule.
Replace Shutoff Valve Under Sink
This is the part that turns a quick sink swap into a longer visit, and it's why we quote the valve work as its own line item. The shutoff valve under your sink, the angle stop, is the small chrome valve on the wall that feeds the faucet. On homes built before the mid-1990s here, those valves are frequently the original multi-turn compression type, and they haven't been closed in years. The moment you turn one to shut the water off for the sink swap, an old packing washer can give out and the valve starts to weep, or the stem seizes and won't seat again at all.
When a shutoff valve needs replacing, here's what that actually involves:
- Cut water at the source. If the angle stop won't hold, we close the water at the main and work from there rather than fight a failed valve.
- Swap to a quarter-turn stop. We replace old multi-turn compression valves with quarter-turn ball stops, which are far less likely to seize and easier to operate next time.
- Match the supply line. Older homes often have 3/8-inch compression fittings that don't match a modern faucet's connection. We fit the correct braided supply line so the joint is right, not adapted with a stack of couplings.
- Fill and pressure-test. New valve, new line, then we run it and check every joint before the cabinet doors close.
If you discover a valve that won't shut off before we get there, don't force it. Locate your main shutoff and cut the water there. If you also find an under-sink leak you can't trace, we can look at that on the same visit. Get an instant quote on a common valve or supply-line swap with our online tool, or book online to get on the schedule.
Why Twin City Pipeworks
What Determines Your Sink Installation
The sink itself is straightforward. Here's what actually drives the time and the price on an east-metro sink install:
Supply Line Connection
Older homes frequently run 3/8-inch compression fittings that don't match a modern faucet. We fit the correct supply line rather than stack adapters.
Drop-In vs Undermount
A same-footprint basin swap is quick. Switching drop-in to undermount, or fitting a larger basin than the cutout allows, means countertop and mounting work.
Drain Body Fit
Kitchen basins are deeper and heavier, so the drain and P-trap geometry has to line up with the existing waste arm or the basin leaks when it's filled.
Cabinet Access
Shallow bathroom vanities and tight kitchen cabinets are the most common reason a sink job runs long. It's not a reason to rush the seal.
Disposal & Dishwasher Ties
A garbage disposal reconnects to the new drain body, and a dishwasher drain ties in at the disposal or a standpipe. We handle both while we're under there.
Our Sink Installation Process
We work by appointment Monday through Friday, 8 AM to 5 PM. Before anything comes apart, we check the shutoff valves and the supply-line fittings so there are no surprises once the water is off. The old sink comes out cleanly, we test-fit the new basin and the drain body against your cabinet and countertop, then set it, seal it, and connect the supply lines and drain. We fill and pressure-test before we pack up, and every install is covered by our 1-year warranty on all work. We serve the east metro and St. Croix Valley including Woodbury, Stillwater, and Hugo. If you're not sure whether your area is covered, book online and we'll confirm it.
Real Reviews
What Customers Say
Real feedback on upfront pricing, expert repairs, and service that gets the job done right.
Book your repair
Ready to Schedule Your Sink Installation?
Twin City Pipeworks has handled kitchen and bathroom sink installation and replacement across the east metro and St. Croix Valley for 20 years. Licensed in Minnesota, fully insured, and backed by a 1-year warranty on all work. Dave works by appointment Monday through Friday, 8 AM to 5 PM. Book online to get on the schedule, or get an instant quote on a common repair with our online tool.
Prefer to call or text? 651-247-4495
Two easy ways to get started
- Book online — pick a visit time that works for you, no phone tag.
- Get a repair quote — common repair tasks priced in minutes with our online tool.
Keep Exploring
Where to Next?
Jump straight to the service or info you need, or book your repair online any time.
Twin City Pipeworks
Ready to get it fixed right?
Honest, upfront pricing and a 1-year warranty on every job. Book your visit online, or get an instant quote on a common repair.
Prefer to call or text? 651-247-4495
Good to Know
Frequently Asked Questions
Undermount vs drop-in sink install: which is easier to replace? +
A drop-in (top-mount) sink is generally the simpler swap because the rim sits on top of the counter and holds the sink's weight, so a same-size replacement usually drops into the existing cutout. An undermount sink hangs below the countertop and is held by clips and adhesive from underneath, so replacing one means resetting those mounts and resealing to the underside of the counter, which takes longer and matters more on a stone top. Switching types is the bigger job: going from drop-in to undermount, or the reverse, changes how the sink is supported and often the countertop cutout too. We look at your counter and existing setup and quote the actual scope, per task, before we start.
Do I need a plumber to install a sink? +
Legally, no. But the sink is the easy part. The connections underneath are where sink installs go sideways, especially in older east-metro homes. If your shutoff valves haven't been turned in a decade, they can fail the moment you close them, and Minnesota's hard water accelerates that corrosion. A plumber carries quarter-turn valves and the right supply lines on the truck and can handle a seized angle stop without a second trip. If your home is newer, your valves are sound, and the new basin matches the cutout, a confident DIYer can manage a straightforward swap. If you're not sure what's under there, a scheduled install costs less than repairing a cabinet soaked by a slow drain leak.
Why do you quote the shutoff valve separately from the sink? +
Because we can't know a valve has failed until we close it, but we know how often it happens on homes built before the mid-1990s around here. Old multi-turn compression angle stops seize or start weeping when they're first shut after years of not moving. So we tell you upfront, per task, what a shutoff valve replacement runs alongside the sink price. If the valve holds when we close it, you don't pay for it. If it fails, there's no mid-job surprise and no open-ended change order. It's the honest way to price work on older cabinetry.
Can you connect the supply lines and drain if my new sink came with a different faucet? +
Yes. We handle the sink supply line connection and the drain assembly whether you keep your old faucet or install a new one. A new faucet sometimes has a different supply connection than your old fittings, and older east-metro homes often run 3/8-inch compression fittings that don't match modern faucets. We fit the correct braided supply line so the joint is right instead of stacking adapters, and we set the drain body and P-trap so the geometry lines up with your existing waste arm. If a garbage disposal or dishwasher ties into the drain, we reconnect that too.
How long does a sink installation take? +
A same-footprint kitchen or bathroom sink swap that keeps the existing cutout usually takes a couple of hours. It runs longer when the shutoff valves need replacing, when the supply-line fittings don't match the new faucet, or when you're changing sink types (drop-in to undermount) or fitting a larger basin than the countertop opening allows. Every home is a little different, which is why we give you upfront, per-task pricing before any work begins rather than an open-ended estimate.