Before you begin

This project may involve electrical, gas, plumbing, or structural conditions. Shut off and verify the relevant power, water, or gas supply before starting. If the system, support, code requirement, or safe procedure is unclear, stop and consult an appropriately licensed professional.

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Replace a Bathroom Faucet DIY project
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Replace a Bathroom Faucet
Seasonal note: Year-round DIY project

Replace a Bathroom Faucet

Replace a Bathroom Faucet is a bathroom project with a focused materials list, measured preparation steps, fit-and-finish checks, and practical safety notes.

By The DIY Haven Editorial Team · Last reviewed September 11, 2026 · Reviewed for clarity, safety, and source quality.

60–180Estimated cost
6Steps
10Shopping items
Shop starter supplies
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Sources and safety references

We consulted these public references for safety, installation, or product-use guidance. They are provided for context and do not replace local code or a licensed professional.

Workshop plan

Step-by-step instructions

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1

Step 1

Confirm the sink’s hole count, spread, deck thickness, supply connection sizes, and drain compatibility before purchasing the faucet.

2

Step 2

Close both fixture shutoff valves, open the faucet to relieve pressure, and place a bucket and towels below the connections.

3

Step 3

Disconnect the supply lines, remove the mounting hardware and old faucet, then clean the sink deck without scratching the finish.

4

Step 4

Install the new gasket, faucet, and mounting hardware in the manufacturer’s sequence; keep the faucet aligned while tightening evenly.

5

Step 5

Connect new correctly sized supply lines without twisting or over-tightening, and install the drain only if it is part of the planned scope.

6

Step 6

Open the shutoffs slowly, flush the aerator as directed, and inspect every joint with dry tissue immediately and again after several operating cycles.

Safety check

Plumbing work can cause water damage. Shut off both hot and cold water before starting, confirm the valves hold, and consult a licensed plumber if shutoffs leak, supply piping is corroded, connections do not match, or any step is uncertain.

Helpful answers

Frequently Asked Questions

Plan for approximately 60–180, depending on material quality, local prices, and which tools you already own.
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