Residential Plumbing Services
Residential Plumbing Services in North County San Diego
Whether it’s a leaking pipe, a failing water heater, a stubborn drain, or a full bathroom remodel — Alonso Plumbing Inc. handles all residential plumbing needs for homeowners throughout North County San Diego. As a third generation family owned company we understand that inviting a plumber into your home requires trust, and we take that seriously on every job. We show up on time, treat your home with respect, give you upfront pricing before any work begins, and don’t leave until the job is done right.
Licensed & Insured
Same-Day Service
Upfront Pricing
Drain Services
From slow drains to full main line blockages, we clear it fast using professional-grade equipment and hydro jetting technology.
Water Heater Services
From same-day repairs to full tankless installations, we keep your hot water running reliably — on time, on budget, and built to last.
Leak Detection & Repair
Hidden leaks cause serious damage before you ever notice them. We use advanced detection equipment to find and fix leaks fast — inside walls, under slabs, and underground.
Home Plumbing Services
Whether it's a minor leak or a full repipe, we repair and replace all types of pipes with lasting solutions and minimal disruption to your home.
Emergency Plumbing Services
Plumbing emergencies don't wait for business hours — and neither do we. Whether it's a burst pipe, major leak, or sewage backup, we respond fast to protect your home and minimize damage. Available 24/7 for North County homeowners when you need us most.
Why Us
Our Commitment to Excellence
Licensed & Experienced
With years of hands-on experience and full licensing in California, our team delivers quality workmanship you can trust on every job.
Honest & Transparent
No surprises, no hidden fees. We give you upfront quotes before any work begins so you always know exactly what you're paying for.
Fast & Reliable Service
We show up on time, work clean, and don't leave until the job is done right. Same-day service available for urgent repairs.
Frequently Asked Questions
How do I know if I have a plumbing leak in my home?
Common signs of a hidden plumbing leak include unexpectedly high water bills, water stains on walls or ceilings, damp or soft spots on floors, mold or mildew growth, low water pressure, and the sound of running water when nothing is turned on. If you notice any of these signs contact a licensed plumber immediately — hidden leaks cause serious structural damage and get significantly more expensive the longer they go undetected.
How often should I have my home's plumbing inspected?
We recommend a professional plumbing inspection every 1 to 2 years for most homes. Older homes with aging pipes, homes with large trees near sewer lines, or homes that have never been inspected should be checked sooner rather than later. Regular inspections catch small problems before they become costly emergencies and give you peace of mind that your home’s plumbing system is in good working order.
What should I do if I have a plumbing emergency at home?
First locate and shut off your main water supply valve to stop water flow and minimize damage. Then call a licensed plumber immediately. While waiting avoid using any plumbing fixtures and document the damage with photos for insurance purposes. For gas leaks evacuate your home immediately and call your gas company before calling a plumber. We respond to residential plumbing emergencies 24 hours a day 7 days a week throughout North County San Diego.
Should I repair or replace my water heater?
If your water heater is less than 8 years old and the repair cost is less than half the cost of a new unit repair is usually the right choice. If it’s older than 10 years, requires frequent repairs, or is showing signs of rust and corrosion replacement is almost always the better investment. We always give you an honest assessment and upfront quote for both options so you can make the best decision for your home and budget.
What is the difference between a tankless and traditional water heater?
Traditional tank water heaters store and continuously heat a large volume of water — they’re less expensive upfront but cost more to operate over time. Tankless water heaters heat water on demand — they never run out of hot water, are more energy efficient, last longer, and take up significantly less space. We recommend Navien tankless water heaters for most residential customers because of their reliability, efficiency, and long term cost savings.
What causes low water pressure in my home?
Low water pressure can be caused by a partially closed main shut off valve, a failing pressure regulator, mineral buildup inside pipes, a hidden leak somewhere in the system, or corroded older pipes. In some cases low pressure is a neighborhood wide issue from the municipal supply. We diagnose the exact cause of your low water pressure and fix it correctly rather than guessing.
How do I know if my sewer line needs to be repaired or replaced?
Signs of sewer line problems include multiple drains backing up simultaneously, gurgling sounds from toilets, sewage odors inside or outside your home, unusually green or lush patches of grass over the sewer line, and sinkholes or wet spots in the yard. A camera inspection is the most accurate way to assess the condition of your sewer line and determine whether repair or full replacement is needed.
Are you licensed and insured for residential plumbing work in California?
Yes — Alonso Plumbing Inc. is fully licensed, insured, and bonded in California. Our CA Contractor License number is #1145697 which you can verify directly on the CSLB website. Every residential job is performed by experienced licensed plumbers who take pride in their work and treat your home with the same respect they would their own.
Service Areas
Proudly Serving North County San Diego & Surrounding Areas
Carlsbad | Oceanside | Vista | San Marcos | Escondido | Encinitas | Fallbrook | Bonsall | Del Mar | Solana Beach | Rancho Santa Fe | San Diego | Temecula | Murrieta | Menifee | Rancho Cucamonga
25+
Years of Experience
Our Legacy
25+ Years of Plumbing Experience
With over 25 years of hands-on plumbing experience, the Alonso family has built a reputation for honest work, fair pricing, and showing up when it matters most. From simple repairs to complex commercial jobs — we’ve seen it all and fixed it all.
- Licensed & Insured in California
- Family Owned & Operated
- Serving North County Since 2000
Got a Plumbing Problem? We're Ready to Help.
Contact us today for fast, reliable service across North County San Diego.