Serving Costa Mesa, CA
Your Neighbors in Costa Mesa Since 1998
Costa Mesa is home — it's where KCB Plumbing was founded and where our office is today at 3303 Harbor Blvd. We know the plumbing in this city better than anyone because we've been fixing it for over 27 years. From the post-war homes on the Westside to the 1970s builds in Mesa Verde, we've seen every pipe, drain, and water heater issue Costa Mesa homes can throw at us.
Common Plumbing Issues in Costa Mesa
Most Costa Mesa homes were built between the 1950s and 1970s. Westside homes tend to be 1950s–1960s post-WWII construction, while Eastside and Mesa Verde developed through the 1960s and 1970s.
Galvanized Pipe Corrosion
Pre-1960s Westside homes often still have original galvanized steel water supply lines. After 60+ years, these pipes corrode from the inside out — causing rusty water, low pressure, and eventual leaks. A full copper or PEX repipe is the permanent fix.
Aging Cast Iron Drain Lines
Homes built before 1975 likely have cast iron drain and sewer lines that are now 50–70 years old. We regularly find cracked, corroded, or root-infiltrated cast iron throughout Costa Mesa — especially in Mesa Verde's mature tree-lined streets.
Slab Leaks
Orange County's expansive clay soil puts constant pressure on pipes running beneath concrete foundations. Combined with hard water wearing down copper from the inside, slab leaks are one of the most common calls we get from Costa Mesa homeowners.
Hard Water Damage
Costa Mesa water runs 10–15 GPG (grains per gallon) — firmly in the 'hard' category. This mineral buildup reduces water heater efficiency, clogs aerators, and accelerates pinhole leaks in copper pipes. A water softener can extend the life of your entire plumbing system.
Fun fact: we're just a few blocks from South Coast Plaza. When you call KCB, your plumber is probably 10 minutes away — not driving across the county.
Our Services in Costa Mesa
We provide every residential and commercial plumbing service Costa Mesa homeowners need — from urgent repairs to planned installations and system upgrades.
Residential Plumbing
Complete residential plumbing services from new construction to everyday repairs. We handle everything so your home runs smoothly.
Learn moreDrain Cleaning
Professional drain cleaning that goes beyond the surface. We clear blockages and keep your drains flowing for the long term.
Learn moreLeak Detection & Repair
Hidden leaks waste water and cause damage. Our advanced detection finds leaks fast, and our repairs are built to last.
Learn moreTankless & Water Heater Services
Keep your hot water flowing. Installation, repair, and maintenance for traditional and tankless water heaters.
Learn moreWater Purification
Clean, safe water for your entire home. From filtration systems to reverse osmosis, we improve your water quality.
Learn moreCommercial Plumbing
Full-service commercial plumbing for contractors, property managers, and businesses. From new construction to tenant improvements, we handle projects of any scale.
Learn moreWhy Costa Mesa Homeowners Choose KCB Plumbing
Frequently Asked Questions — Costa Mesa Plumbing
Common questions from Costa Mesa homeowners about plumbing services, repairs, and maintenance.
How do I know if my Costa Mesa home has galvanized pipes?
Look for rusty or discolored water when you first turn on a faucet, low water pressure, or visible silver-gray pipes with threaded fittings in your garage or crawlspace. Most Westside Costa Mesa homes built before 1960 originally had galvanized steel. Call us at (714) 894-6520 for a free assessment — we're right here on Harbor Blvd.
What causes slab leaks in Costa Mesa homes?
Orange County's expansive clay soil shifts with moisture changes, putting stress on the copper pipes running beneath your foundation. Combined with Costa Mesa's hard water (10-15 GPG) corroding pipes from the inside, slab leaks are one of the most common issues we see. Early signs include unexplained spikes in your water bill, warm spots on the floor, or the sound of running water when nothing is on.
Do you offer free estimates for plumbing work in Costa Mesa?
Yes — we provide free over-the-phone estimates for many common services. For more complex jobs like repipes or slab leak repairs, we may need to visit the property first (a trip charge may apply). Since our office is right here at 3303 Harbor Blvd in Costa Mesa, we can usually get to you the same day. Call (714) 894-6520 Monday through Friday, 8 AM to 5 PM.
How much does a whole-house repipe cost in Costa Mesa?
Every home is different, but we provide flat-rate, upfront pricing before any work begins — no surprises. The cost depends on the size of your home, number of fixtures, and accessibility of the pipes. Call us at (714) 894-6520 for a free phone consultation and we'll give you a clear idea of what to expect. We've been repiping Costa Mesa homes for over 27 years.
Need a Plumber in Costa Mesa?
Free phone estimate. Mon–Fri 8 AM – 5 PM.