San Diego County Plumbing Company | Alonso Plumbing Inc.
We handle the hard work, so you worry less.
- Upfront Pricing
- Fully Licensed
- Fast-Response
CA License #1145687
Why Homeowners Choose Alonso Plumbing Inc.
Upfront Pricing
No hidden fees or surprises — honest quotes before any work begins.
Licensed & Insured
Fully licensed, bonded and insured for your complete peace of mind.
Fast Response
Same-day and emergency service available when you need us most.
Guaranteed Work
All work backed by our satisfaction guarantee — we don't leave until it's right.
About us
#1 Plumbing Company in San Diego County
With over 25 years of hands-on experience in residential and commercial plumbing, Alonso Plumbing Inc. delivers reliable, honest service to homeowners and businesses across Carlsbad and surrounding areas. If you’re looking for a plumber in San Diego County, we are the team for you!
Our Services
San Diego County Plumbing Services
Residential
Plumbing
From clogs to full bathroom remodels, Alonso Plumbing Inc. can handle all your residential plumbing needs.
Commercial
Plumbing
Restaurants, hotels, resorts, you name it, we can help you with your commercial plumbing needs.
Emergency
Plumbing
Emergency Residential and Commercial Plumbers all over San Diego County.
Why Us
Plumbers Who Actually Care
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.
Our Projects
Our Recent Projects
Eldorado Country Club
Indian Wells, CA
The Vintage Club
Indian Wells, CA
Murrieta Hot Springs Resort
Murrieta, CA
Frequently Asked Questions
What areas do you serve?
We serve all of San Diego County including Carlsbad, Oceanside, Vista, San Marcos, Escondido, Encinitas, Fallbrook, Bonsall, Del Mar, and Solana Beach. We also serve the Temecula, Murrieta, and Menifee areas. If you’re unsure whether we cover your area give us a call and we’ll let you know right away.
Are you licensed and insured?
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 job is performed by experienced licensed plumbers who take pride in their work and stand behind it.
Do you offer free estimates?
Yes — we provide free upfront estimates for all residential and commercial plumbing projects. We assess the problem thoroughly, explain exactly what needs to be done, and give you a clear quote before any work begins. No hidden fees, no surprises, and no work starts until you approve the estimate.
Do you offer emergency plumbing services?
Yes — we are available 24 hours a day 7 days a week for plumbing emergencies throughout North County San Diego and surrounding areas. Whether it’s a burst pipe, sewer backup, water heater failure, or active flooding we respond fast to minimize damage and get your home or business back to normal as quickly as possible.
Do you handle both residential and commercial plumbing?
Yes — we handle everything from residential home repairs and water heater replacements to large scale commercial installations for restaurants, hotels, resorts, grocery stores, senior living facilities, and country clubs. No job is too big or too small for our licensed and experienced team.
How long have you been in business?
Alonso Plumbing Inc. was founded by brothers Julio and Eddy Alonso — third generation plumbers who grew up learning the trade from their father and grandfather. With over 25 years of hands on plumbing experience behind them the Alonso family has built a reputation for honest work, fair pricing, and showing up when it matters most.
What brands do you install and recommend?
We install and recommend industry leading brands including Navien for tankless water heaters and AO Smith and Bradford White for traditional commercial and residential tank units. We only work with brands we trust to deliver long term reliability and performance for our customers.
How do I schedule a service call?
Scheduling is easy — call us directly at 760-626-4204, fill out the contact form on our Contact Page, or click the Get a Free Quote button and we’ll get back to you promptly. For emergencies always call us directly for the fastest response. We offer same day and next day appointments for most service calls throughout North County San Diego.
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 San Diego County Since 2000
Service Areas
Proudly Serving San Diego County & 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
Got a Plumbing Problem? We're Ready to Help.
Contact us today for fast, reliable service across San Diego County.