A kitchen sink replacement seems like a simple project, but once you start, there are a surprising number of variables that affect cost, timeline, and the final result. Whether you’re upgrading to a farmhouse sink, switching from a drop-in to undermount, or simply replacing a worn-out fixture, understanding what’s involved will help you budget realistically and avoid surprises.
Types of Kitchen Sink Installations
Drop-In (Top-Mount) Replacement
Replacing a drop-in sink with another drop-in of the same size is the most straightforward scenario. The existing countertop cutout is reused, supply connections and drain are reconnected, and the job is typically complete in 1–2 hours.
Undermount Sink Installation
Converting from a drop-in to an undermount requires a different countertop cutout profile and means the sink is mounted below the counter rather than sitting in it. This often requires a plumber and countertop professional to coordinate; the counter must be modified or replaced to create the proper undermount cutout and seal.
Farmhouse/Apron-Front Sink
A farmhouse sink requires significant cabinet modification to accommodate its depth and front apron. This is a full kitchen renovation element that requires coordination between a plumber, cabinet installer, and potentially a countertop contractor.
What’s Included in a Kitchen Sink Replacement
- Removal and disposal of the old sink
- Installation and sealing of the new sink
- Supply line connections (hot and cold)
- Drain and P-trap connection
- Garbage disposal connection (if applicable)
- Testing for leaks and verifying drainage
Average Kitchen Sink Replacement Cost in Houston
Labor for kitchen sink replacement in Houston typically ranges from $150–$400 depending on the complexity of the installation. This does not include the cost of the sink itself, which ranges from $100 for a basic stainless drop-in to $1,500+ for a cast iron farmhouse sink.
If supply lines are old and need replacement (which we recommend if they’re more than 5–7 years old), add $50–$100 for parts. Garbage disposal installation, if needed, adds $150–$350 for labor and parts.
Things That Can Add to the Cost
- Old, corroded supply valves — shutoff valves under the sink that are stuck or leaking will need replacement
- Changing sink size — a larger sink requires countertop modification
- Countertop cutout modification — switching sink types often requires expanding or reshaping the opening
- Garbage disposal upgrade — a great time to replace an old disposal
- Old drain pipes — chrome P-traps and drain pipes in older homes are often corroded and should be replaced with PVC during a sink swap
Why Hire a Licensed Plumber for Sink Replacement?
A poorly connected sink drain or supply line can cause slow leaks inside a cabinet that go unnoticed for months, eventually leading to mold, swollen cabinet flooring, and structural damage. Proper sealing, correctly torqued supply connections, and code-compliant P-trap configuration are all details a licensed plumber handles correctly the first time.
Santhoff Plumbing handles kitchen sink installation throughout the Houston metro area. We’ll evaluate your existing countertop, supply lines, and drain configuration and give you a straightforward estimate.
Frequently Asked Questions
How long does kitchen sink replacement take in Houston?
A straightforward same-configuration replacement takes 1–2 hours. More complex installations involving countertop modification or cabinet work take longer.
Do I need a permit to replace a kitchen sink in Houston?
No permit is required for replacing a kitchen sink in the same location without altering the drain or supply rough-in.
Can I replace a kitchen sink myself?
A basic same-configuration drop-in replacement is within the capability of a skilled DIYer. However, improperly sealed connections and incorrect P-trap configuration are common DIY mistakes that cause water damage. For undermount and farmhouse sinks, professional installation is strongly recommended.
Does Santhoff install garbage disposals as part of a sink replacement?
Yes. We can replace or install a new garbage disposal at the same time as your sink replacement. Call (713) 665-4997 to schedule.