Table of Contents
- Identify the faucet type first; the repair differs for compression, cartridge, ball and ceramic disc designs.
- Always close the shutoff valves under the sink and plug the drain before taking anything apart.
- Handle drips quickly; they waste water and can damage cabinets, floors and the ceiling below.
- A leak at the base, supply line or wall points to a larger plumbing issue, not a faucet part.
- Rentals and co-ops have rules on who repairs fixtures, so check your lease or house rules first.
A single drip per second adds up fast. It wastes water, stains the sink, and in an apartment it often means someone is going to complain about the sound at 2 AM. The good news: most dripping faucets are one of four problems, and each has a standard fix. The tricky part is knowing which faucet you have.
This guide, current as of October 2026, takes a diagnostic approach. We walk through the four faucet designs, the tools you need, a step-by-step repair for each, and the signs that a drip is really a symptom of something bigger. We also cover the rules that matter in rentals and co-ops, and what changes in older Brooklyn houses and pre-war buildings. If you want a shorter checklist version, see our companion piece, a quick faucet repair guide for the boroughs.
1. First, Figure Out Where It Is Leaking
A faucet can leak in four places, and each means something different.
- From the spout: the internal seal or cartridge is worn. This is the most common and most fixable problem.
- Around the handle: an O-ring, packing nut or cartridge retainer is loose or worn.
- At the base of the faucet: a seal or gasket has failed, or water is running down from the spout joint. Sometimes the mounting is loose.
- Under the sink or from the wall: a supply line, shutoff valve or the pipe itself is leaking. This is a plumbing problem, not a faucet problem.
Dry the area with a towel, run the faucet briefly, and check each spot with a dry tissue. Do this before you buy anything, because a leaking supply line needs a different part, and a leak inside the wall needs a professional.
2. Know Your Faucet Type
Most home faucets are one of four designs. Identify yours by the handle layout and, if needed, by looking inside after removing the handle.
| Type | How to recognize it | Typical cause of leak | Fix |
|---|---|---|---|
| Compression | Two separate handles that you turn several times | Worn rubber washer or damaged seat | Replace washer, resurface or replace seat |
| Cartridge | Single or double handle, smooth motion | Worn cartridge or O-rings | Replace cartridge |
| Ball | Single handle over a rounded cap, common on older kitchen faucets | Worn seats, springs or O-rings | Replace the repair kit |
| Ceramic disc | Single lever, smooth and often modern | Cracked disc or worn seals | Replace disc cartridge |
Older apartments and houses in Flatbush, Crown Heights and Ditmas Park often have compression faucets from earlier renovations, though plenty of owners have since upgraded to single-handle cartridge styles. If the faucet is more than fifteen to twenty years old and parts are discontinued, replacement may be smarter than repair.
3. Tools and Supplies
You likely own most of these.
- Adjustable wrench and a set of screwdrivers
- Allen keys (many handles use set screws)
- Needle-nose pliers and a utility knife
- Plumber's grease and replacement O-rings
- Penetrating oil for stuck parts
- A towel, a small bowl and a flashlight
- A basin plug or rag to cover the drain so small parts do not fall in
- The correct replacement kit, cartridge or washers
Take photos at each step and keep parts in order on a towel. Bring the old cartridge or washer to the hardware store to match it, because sizes vary by manufacturer.
4. Step-by-Step Repair
These steps apply broadly; consult the maker's instructions for your model.
- Shut off the water. Close the two valves under the sink. Turn the faucet on to drain pressure. If the valves are stuck or leak when turned, stop and call a pro. In a co-op or older apartment you may need the super to shut off the riser.
- Plug the drain and cover the sink. A dropped screw is gone for good.
- Remove the handle. Pry off the decorative cap, remove the screw, and lift the handle. Some use hidden set screws.
- Remove the packing nut or retaining clip. Unscrew carefully to avoid scratching the finish.
- Pull the stem or cartridge. Cartridges often slide straight out. Compression stems unscrew.
- Inspect and replace. Replace the washer and O-ring, the cartridge, the ball seals or the ceramic disc. If the valve seat is rough, a seat wrench can remove and replace it.
- Clean the housing. Remove mineral buildup with a soft brush and a vinegar-soaked cloth.
- Lubricate and reassemble. Use plumber's grease on rubber parts. Reverse your steps.
- Test. Open the shutoff valves slowly, run the faucet, and check for leaks at the spout, handle and base.
5. Why Some Drips Keep Coming Back
If a freshly repaired faucet drips again, one of these usually explains it.
- Corroded valve seat. Compression faucets seal against a metal seat. Once it pits, a new washer cannot seal. Resurface or replace the seat.
- High water pressure. Excess pressure wears seals faster. A pressure-reducing valve at the building entry or a worn building regulator can be the cause; this is a plumber's job.
- Mineral buildup. Deposits scratch discs and seats.
- Wrong part. Cartridges that look similar can differ by a few millimeters.
- Over-tightening. Cranking a packing nut can distort seals.
When the second repair fails, replace the faucet. A new faucet with ceramic disc or modern cartridge parts is often a cleaner fix than a third repair, and if the sink area is damaged, you can ask us for a repair estimate before the cabinet gets worse.
A Ten-Minute Annual Faucet Check
Prevention beats repair. Once a year, ideally in fall before the heating season, do a short walk-through of every sink, tub and shower.
- Open the cabinet under each sink and look for water rings, swollen wood or a musty smell.
- Run your hand along the supply lines and shutoff valves; any dampness or crusty mineral deposits mean a slow leak.
- Turn each shutoff valve a quarter turn and back, so it does not seize. If one will not move, replace it before an emergency.
- Check that each faucet shuts off fully with light pressure; cranking harder to stop a drip is a warning sign.
- Clean aerators and showerheads of mineral buildup so pressure stays even.
- Note any faucet that is stiff, wobbly or discolored, since those are the ones to replace first.
Write the date and findings on a card kept in the cabinet. In a multifamily house, doing this at each lease renewal also gives you a written record of fixture condition for every unit.
6. Leaks That Are Not Really the Faucet
Some leaks look like faucet problems but are not.
- Supply lines: the braided hoses below the sink corrode and burst. Replace them if they are older than about ten years or show bulging.
- Shutoff valves: old multi-turn valves can seep around the stem. Replace them when you replace the faucet.
- Drain traps: a damp cabinet floor may be from the trap, not the faucet.
- Riser or in-wall pipes: water on the wall, a ceiling stain below, or a musty cabinet suggests pipe damage. Stop and call a professional, since hidden leaks lead to mold and rot. Hidden leaks soak subfloors and feed mold, so if you find any of these signs, ask us to inspect it before the damage spreads.
7. Rules, Permits and Building Policies
Fixing a drip is usually routine, but the rules matter once you go beyond a swap.
- Rentals: tenants should report leaks to the landlord or super in writing. The NYC Department of Housing Preservation and Development explains tenant and owner responsibilities on the HPD website.
- Co-ops and condos: house rules often say who repairs fixtures, and some require the managing agent to shut off risers. Check your proprietary lease or alteration agreement.
- Permits: replacing a faucet in the same location is generally routine. Moving supply or drain lines, replacing risers or reworking a bathroom layout can require a Department of Buildings permit and a licensed professional. The DOB explains the process on its permit page. See our Do I Need a Permit? page for a plain-language starting point.
- Long Island and New Jersey: permits come from the local building department or municipal construction office. Check locally.
Our guide to navigating NYC renovation codes goes deeper on the boroughs.
8. Neighborhoods and ZIP Codes We Serve in Brooklyn
Faucet problems look different depending on the housing stock. Our Brooklyn renovation services page covers the borough as a whole.
- Canarsie: ZIP 11236
- Williamsburg: ZIPs 11211, 11249, 11206
- Greenpoint: ZIP 11222
- Crown Heights: ZIPs 11213, 11216, 11225, 11238
- Ditmas Park: ZIP 11226
- Flatbush: ZIPs 11226, 11210
In Canarsie, attached and detached homes often have basements and laundry or utility sinks, and flood-prone blocks make leaks near the floor drain a higher priority than a kitchen drip. Williamsburg mixes converted lofts, new waterfront condos and wood-frame row houses, so one block may have 1990s loft plumbing and the next brand-new fixtures with warranty requirements. In Greenpoint, wood-frame row houses and new waterfront condos present a similar contrast, and older houses often have galvanized or mixed-metal pipes. Crown Heights limestones, brownstones and pre-war apartments sit in landmark districts, so interior fixtures are free to change, but visible exterior work is not. Ditmas Park's detached Victorian wood-frame houses can have many plumbing eras in one building, and Flatbush adds pre-war co-ops, where the super controls riser shutoffs.
9. When a Pro Is the Smarter Call
A drip repair is a decent DIY project when the shutoffs work, the faucet is common and the cabinet is dry. It stops being a DIY project when a failed repair floods a kitchen, a seized valve snaps off, or a hidden leak soaks a subfloor. A single burst supply line can cost far more in drywall, flooring and cabinetry than a professional visit.
N.Y. Renovation Services is a licensed and insured design-and-build team. We replace fixtures as part of kitchen and bathroom renovations and coordinate licensed plumbing when a job needs it. If the leak points to bigger work, such as a corroded riser, rotted vanity or damaged tile and subfloor, we can handle the full repair: demolition, waterproofing, tile, flooring, painting and the permit and board paperwork that comes with it.
Why this matters to owners and tenants:
- We find the real cause. A drip under a vanity may come from the supply line, the trap or the wall.
- Repairs match the finishes. Matching tile, paint and cabinet details is part of the job.
- Pricing is written and itemized, with no hidden fees, so you can compare it with any other plumber or contractor.
- Bigger scope, one team. If you decide to renovate the whole bath, see our bathroom and kitchen remodeling page for how we work.
We also donate 5% of the total project cost to a nonprofit of the client's choice. For deeper maintenance planning, read our piece on avoiding common exterior maintenance mistakes.
10. Planning Costs and Timelines for Plumbing-Related Renovations
If a leaky faucet leads to a remodel, these are typical 2026 planning ranges for the New York metro area. Building rules, access, hazardous materials and finishes move prices, and a written itemized quote governs.
| Project | Typical range | Typical timeline |
|---|---|---|
| Bathroom full renovation | $30,000 to $60,000+ | 3 to 6 weeks |
| Kitchen remodel | $25,000 to $85,000+ | 6 to 12 weeks |
| Tile installed, bathroom walls and shower | $30 to $80 per sq ft | 1 to 2 weeks per bathroom including waterproofing cure |
| Waterproofing membrane | $3 to $10 per sq ft added | Part of the tile schedule |
| Interior painting, 1BR | $2,500 to $5,000 | 2 to 7 working days |
For a wider budget, check the 2026 NYC renovation cost guide, and use the contractor hiring checklist to compare bids. Planning a bigger move? The renovation ROI calculator helps you judge payback.
11. Next Steps: Get Your Free Estimate
If your faucet is a simple drip, fix it with the steps above. If you find corrosion, a damp cabinet, stained ceilings below, or a faucet you would rather replace as part of an upgrade, request a free estimate or call (347) 455-1741. Photos help. We serve all five boroughs, Long Island and nearby New Jersey, Monday to Saturday, 8:00 AM to 5:00 PM.
Safety Note: All work follows OSHA 30 safety and EPA Lead-Safe practices for pre-1978 homes. Check local permit requirements before starting.
James - Lead Renovation Editor. With over 20 years in renovation and construction, James writes and edits our guides. More about James