Leaky Faucet Repair
Leaky Faucet Repair is a common plumbing job. Homeowners typically spend about $16 on materials if they tackle it themselves, while hiring a professional usually runs $75–$200 depending on access, parts, and local labor rates. DIY can save up to about $184 versus a full pro job when the work stays straightforward.
Expect roughly 1-2 hours for a careful DIY attempt versus about 30-45 min for a seasoned pro. Difficulty is rated 2/5 (approachable for most DIYers) with low risk. Typical materials include faucet cartridge, faucet o-ring kit, plumber's tape. Common tools: adjustable wrench, screwdriver, pliers.
Use the sections below to weigh DIY against hiring: cost ranges, safety alerts, common mistakes, and a personalized analysis for your ZIP code.
Typical Cost
Cost estimates based on cataloged material prices and regional pro rates. Run the analysis for US-wide retailer prices and a regional professional-cost estimate. How we estimate costs.
Is this a DIY job?
AI-assisted educational guidance — not reviewed by a licensed professional. Review policy.
- Typical DIY time1-2 hours
- Typical pro time30-45 min
- Permit requiredNo
What affects the cost
- Local labor rates for plumbing pros and whether the visit is emergency vs. scheduled.
- Brand and quality of parts (faucet cartridge, faucet o-ring kit, plumber's tape) versus economy alternatives.
- Access difficulty (tight spaces, multi-story work, finished surfaces that must be protected or repaired after the job).
When to hire a pro
- If you cannot fully stop the water, or water is near electrical outlets/panels, stop DIY and call a plumber.
- High-impact DIY mistake — Improper Shut-Off Valve Procedure: Always locate and turn off the main water supply to the house before starting the repair, and open the faucet to relieve remaining pressure in the lines.
- When you call, describe precisely whether the leak drips from the spout, pools around the base, or appears at the supply line connections. Mention the faucet brand (Moen, Delta, Kohler, etc.) and whether it is a single-handle or two-handle setup, since the plumber can bring the correct replacement parts on the first visit.
- Ask whether the quoted price includes parts and labor or is labor-only, and request a flat-rate bid rather than an hourly estimate so you know the total upfront. Confirm there are no trip charges or diagnostic fees added on top of the quote.
- Inquire whether the plumber will replace all wearable parts (cartridge, O-rings, seats, supply lines) during the visit so you are not paying a second service call for a related failure. Ask if they warranty the repair and for how long.
- If the faucet is old or discontinued, ask the plumber for a recommendation on replacing the entire fixture versus repairing it, including a rough cost comparison so you can decide before they arrive.
- Confirm they carry liability insurance
Hazards & safety alerts
-
low water damage Water damage if supply is not controlled
Opening lines or fittings for leaky faucet can release pressurized water and flood cabinets, floors, or ceilings if shutoffs fail or are skipped.
Stop and call a pro if: If you cannot fully stop the water, or water is near electrical outlets/panels, stop DIY and call a plumber.
Materials you'll need
| Material | Est. Price |
|---|---|
| faucet cartridge | $9.00 |
| faucet o-ring kit | $5.00 |
| plumber's tape | $2.00 |
| Total (DIY materials) | $16.00 |
Tools: adjustable wrench, screwdriver, pliers
DIY steps
- Locate the hot and cold water shut-off valves under the sink and turn them clockwise until they stop. If there are no individual valves, shut off the main water supply to the house at the street or basement. Open the faucet to relieve remaining pressure in the lines, then place a towel or bucket underneath to catch drips during the repair.
- Pop the decorative cap off the faucet handle (if present) and loosen the handle screw with a Phillips or Allen wrench. Pull the handle straight up and off the stem, noting how the parts come off so you can reassemble in reverse order. If the handle is stuck, wiggle gently side to side or use a handle puller tool to avoid bending the stem.
- Use an adjustable wrench or pliers to unscrew the packing nut and lift out the cartridge or stem assembly. Inspect the rubber O-rings, washers, and seats for cracks, mineral buildup, or flattening. Take the old cartridge to the hardware store to match the exact brand and model, since internal dimensions vary widely between manufacturers.
- Clean any mineral deposits from the valve body using white vinegar and a soft brush, then install the new O-rings or cartridge. Lubricate rubber parts with a thin film of silicone faucet grease (not petroleum-based, which degrades rubber). Reinstall the packing nut by hand first to avoid cross-threading, then tighten snugly with a wrench.
- Reattach the faucet handle, replace the set screw and decorative cap, and make sure the handle moves smoothly through its full range. Turn the water supply valves back on slowly to avoid a pressure surge that can damage the new seals. Check for leaks around the base, handle, and supply tubes while the water runs for a couple of minutes.
- If a small drip persists at the spout after the repair, the valve seat may be worn and need reseating with a seat dresser tool. Run the faucet in both hot and cold positions and watch for any seepage over the next hour. Wipe everything dry and slide the escutcheon back into place once you confirm the leak is resolved.
Common DIY mistakes
-
high Improper Shut-Off Valve Procedure
Failing to turn off the main water supply before starting the repair can cause flooding and damage to the surrounding area.
-
medium Incorrect O-Ring Inspection
Not inspecting the rubber O-rings, washers, and seats for cracks, mineral buildup, or flattening can lead to premature failure of the new cartridge.
-
medium Over-Tightening the Packing Nut
Over-tightening the packing nut can damage the threads and lead to a leaky faucet, requiring a costly repair or replacement.
-
low Not Lubricating the Rubber Parts
Not lubricating the rubber parts with silicone faucet grease can cause them to degrade and fail prematurely, leading to costly repairs.
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medium Not Checking for Leaks
Not checking for leaks around the base, handle, and supply tubes after the repair can lead to hidden water damage and costly repairs.
Frequently asked questions
- How much does it cost to fix a leaky faucet?
- DIY materials typically run about $16. Hiring a pro usually costs $75-$200 depending on your area and the scope of the job.
- Can I fix a leaky faucet myself?
- It depends on the job. Difficulty is rated 2/5 and risk level is low. Run the free analysis on RepairSmart for a personalized DIY vs. hire recommendation.
- What are common mistakes when you fix a leaky faucet?
- Common DIY mistakes include: Improper Shut-Off Valve Procedure; Incorrect O-Ring Inspection; Over-Tightening the Packing Nut. See RepairSmart for the full list and cost breakdown.
- What safety hazards should I watch for when working on leaky faucet?
- Key hazards include: Water damage if supply is not controlled. See RepairSmart for stop-conditions and the full safety list.
Not sure? Get a personalized recommendation
RepairSmart compares US-wide retailer prices with regional pro costs and gives you a weighted DIY-vs-hire recommendation in under 60 seconds.
About these estimates
- Numbers on this page come from the RepairSmart catalog (materials baselines and typical pro ranges). They are educational estimates, not contractor quotes.
- Personalized ZIP analysis may add live or cached retailer prices and regional pro signals when third-party data is configured.
- Read how costs and DIY scores are calculated, our safety & review policy, and about RepairSmart.
- If guidance is marked unreviewed, treat steps and tips as educational only—not a professional sign-off for your home.