How to replace a bathroom faucet in an afternoon

You can replace a bathroom faucet in about two to three hours if the shutoff valves work and the sink opening matches the new faucet. Most Arlington Heights homeowners finish in one afternoon with a basin wrench, an adjustable wrench, and a new faucet that fits the existing three-hole or single-hole deck.

This guide walks through the exact steps we use on faucet replacement Arlington Heights calls, including 2026 pricing, the shutoff-valve problem that derails half of DIY attempts, and when it makes more sense to hand the job to a plumber.

What you need before you start

Before you buy anything, check three things under the sink: the number of holes in the deck, the distance between the outer holes (usually 8 inches for a widespread faucet or 4 inches for a centerset), and whether the shutoff valves actually close. A faucet that does not match the hole pattern will not install no matter how carefully you follow the instructions.

Gather these tools and parts before you start:

• New faucet with supply lines (buy the version with pre-attached braided lines - it saves 20 minutes)
• Basin wrench (the single most important tool; an adjustable wrench will not reach the mounting nuts)
• Adjustable wrench and Phillips screwdriver
• Bucket, towels, and plumber's putty or silicone caulk
• Teflon tape and a small flashlight or headlamp

Budget $90 to $260 for a mid-grade bathroom faucet at a local hardware store in 2026. A plumber-supplied faucet plus installation in Arlington Heights typically runs $280 to $520 total, depending on the fixture grade and whether the shutoff valves need replacing.

How do I replace a bathroom faucet in Arlington Heights IL?

Replacing a bathroom faucet in Arlington Heights IL follows the same six steps whether you live in a 1950s ranch near Pioneer Park or a newer townhome off Rand Road: shut off the water, disconnect the supplies, remove the old faucet, clean the deck, set the new faucet, and test for leaks.

1. Shut off the water. Turn both angle stops clockwise until they stop. Open the faucet to confirm water is off. If the valves are frozen or weeping, stop here - that is a Plumbing repair Arlington Heights IL job, not a faucet job.
2. Disconnect the supply lines. Put a bucket under the P-trap, loosen the nuts at the valve with an adjustable wrench, and let the lines drain.
3. Remove the old faucet. Unscrew the mounting nuts under the deck with the basin wrench. Cut the caulk line with a utility knife and lift the faucet out. Expect rust and mineral scale on anything older than 15 years.
4. Clean the deck. Scrape off old putty and caulk. A clean, dry surface is what keeps the new faucet from rocking.
5. Set the new faucet. Apply a thin ring of plumber's putty or silicone, feed the lines through the holes, and tighten the mounting nuts from underneath. Snug, not gorilla-tight - overtightening cracks porcelain.
6. Reconnect and test. Attach the supply lines, turn the valves on slowly, and run hot and cold for two minutes while you watch every connection with a flashlight.

If your home was built before 1990, the shutoff valves under the sink are often original gate valves that no longer seal. That single issue is why many DIY faucet swaps turn into a same-day call. We handle those valve replacements on bathroom Plumbing services Arlington Heights IL visits so the new faucet has a reliable shutoff behind it.

How long does faucet replacement take in Arlington Heights, Illinois?

Faucet replacement in Arlington Heights, Illinois takes 1.5 to 3 hours for a straightforward swap and 3 to 4 hours when the shutoff valves or supply lines also need replacing. A plumber who does this weekly can usually finish a standard single-hole or 4-inch centerset swap in 60 to 90 minutes.

Here is where the time actually goes:

• Shutoff and drain: 10 minutes
• Remove old faucet and clean deck: 30 to 45 minutes (longer if the old faucet is corroded)
• Install new faucet and connect supplies: 30 to 45 minutes
• Test and clean up: 15 minutes

Older homes in the Scarsdale and Hasbrook neighborhoods often add 30 to 60 minutes because the original valve bodies are seized and the supply lines are stiff copper rather than braided stainless. Newer construction off Palatine Road usually runs closer to the 90-minute mark.

Common mistakes and what to watch for

The most common mistake in a DIY faucet replacement is overtightening the supply connections - hand-tight plus a quarter turn with a wrench is enough, and more than that crushes the washer and causes the leak you were trying to prevent. The second most common is skipping the basin wrench and trying to reach the mounting nuts with a regular wrench, which strips the nut and adds an hour.

Other issues we see on callbacks:

• Wrong hole pattern. Buying an 8-inch widespread faucet for a 4-inch centerset sink. Measure before you buy.
• Missing the deck plate. A single-hole faucet on a three-hole sink needs an escutcheon plate, or you will have two open holes leaking water into the cabinet.
• No putty under the spout. Water wicks under the base and rots the deck.
• Ignoring a dripping shutoff. A valve that weeps when you turn it back on will keep weeping. Replace it while the cabinet is empty.

If your old faucet was leaking for weeks before you replaced it, check the cabinet floor for soft wood and the P-trap for corrosion. Persistent moisture under a bathroom sink is one of the hidden leaks we track down on water leak repair Arlington Heights calls, and it is cheaper to fix before the cabinet base fails.

When to call a professional

Call a professional when the shutoff valves do not close, when the sink deck is cracked, or when the new faucet does not match the existing holes. Those three problems turn a two-hour DIY project into a multi-day repair, and they are the reason we keep a fully stocked van for Plumbing Arlington Heights IL calls.

Five Star Plumber LLC handles faucet swaps, valve replacements, and supply-line upgrades across Arlington Heights. We shut the water, pull the old fixture, set the new one, and test every connection before we leave. If the job turns out to be a valve problem instead of a faucet problem, we tell you before we start the work.

We also see a fair number of faucet jobs that started as a simple swap and ended with a broken valve stem in a 1960s home near Heritage Park. Those are quick fixes for us because we carry replacement stems and angle stops on the truck. You do not need to make three trips to the hardware store.

Frequently Asked Questions

Can I replace a bathroom faucet myself in Arlington Heights IL?

Yes, if the shutoff valves close fully and the new faucet matches your sink's hole pattern. Plan on 2 to 3 hours and a basin wrench. If the valves are frozen or weeping, stop and call a plumber - forcing them can break the pipe inside the wall.

How much does bathroom faucet replacement cost in Arlington Heights in 2026?

Expect $90 to $260 for a mid-grade faucet and $280 to $520 total for a plumber-supplied faucet plus installation. Valve replacement adds $80 to $180 per valve if the old shutoffs fail during the swap.

Do I need a permit to replace a bathroom faucet in Arlington Heights?

No. A like-for-like faucet swap does not require a plumbing permit in Arlington Heights. Moving supply lines or relocating the sink does trigger a permit and inspection.

Why is my new faucet leaking at the base?

The base leak is almost always a missing or pinched O-ring, a dry putty ring, or a mounting nut that is not snug. Pull the faucet, reseat the O-ring, apply fresh plumber's putty, and retighten. If it still leaks, the deck may be uneven.

Can I replace just the faucet cartridge instead of the whole faucet?

Yes, if the finish and body are in good shape. A cartridge replacement runs $15 to $40 in parts and takes 30 to 45 minutes. Replace the whole faucet when the body is corroded or the finish is peeling.

Get help with Plumbing in Arlington Heights

If your shutoff valves are stuck, your sink deck is cracked, or you would rather spend the afternoon doing something other than lying under a cabinet, we can have your new faucet installed and tested today. Call Five Star Plumber LLC at (224) 643-9856 and we will walk you through what the job needs before we arrive.