ADU & New Construction Plumbing in San Marcos
Cherny Plumbing brings dependable ADU & New Construction Plumbing to San Marcos homes and businesses.

ADU & New Construction Plumbing in San Marcos
Our ADU & New Construction Plumbing service provides comprehensive plumbing system design and installation for accessory dwelling units (ADUs) and new building projects in San Marcos. Property owners need this service when adding a new living space to their property or constructing an entirely new residential or commercial building, ensuring all plumbing meets current codes and functionality requirements.
Proper plumbing installation is critical for the long-term functionality and safety of any new building, preventing costly leaks, water damage, and health hazards. Neglecting professional plumbing can lead to code violations, failed inspections, and significant expenses for repairs and reworks down the line.
What's included in ADU & New Construction Plumbing
What you get
Care for your property and your neighbours while we work.
Follow-up after the job to make sure it's right.
Straight answers on price and timing before any work starts.
One point of contact from quote to cleanup.
Honest advice, even when the answer is 'you don't need that.'
A team that treats a small job with the same care as a big one.
Serving San Marcos & nearby
Our crews work across San Marcos and the surrounding San Diego area every week. From Double Peak Park and Lake San Marcos to the quiet residential streets, San Marcos property owners trust Cherny Plumbing for ADU & New Construction Plumbing done right the first time.
Serving San Marcos and areas near Double Peak Park, Lake San Marcos, California State University San Marcos, Walnut Grove Park.
Our process
Quick estimate
Share the details and get a fast, no-obligation quote.
Schedule it
Pick a time that works — evenings and weekends included.
Sit back
We deliver ADU & New Construction Plumbing in San Marcos and follow up after.
What affects the cost of ADU & New Construction Plumbing
Frequently asked questions
Do you handle the permitting process for new plumbing installations in San Marcos?
While we don't directly pull permits, we provide all necessary documentation and work closely with city inspectors to ensure our installations meet all local San Marcos building codes. We guide you through the permitting requirements.
What is the typical timeline for plumbing installation in a new ADU?
The timeline for plumbing installation in a new ADU typically ranges from 1 to 3 weeks, depending on the ADU's size, complexity, and the overall construction schedule. This includes rough-in and final fixture installation.
Can you integrate smart home plumbing features into my new construction?
Yes, we can integrate various smart home plumbing features, such as smart water leak detectors, smart water heaters, and advanced water filtration systems, into your new construction project. We'll discuss options during the design phase.
What kind of warranty do you offer on new plumbing installations?
We offer a comprehensive 1-year warranty on all our labor for new plumbing installations, in addition to any manufacturer warranties on the fixtures and materials used. Your satisfaction and peace of mind are our priority.
How do I book?
Call +16192150153 or request a quote online and we'll take it from there.
What areas do you cover?
We serve San Marcos and the surrounding San Diego communities.
What San Diego homeowners say
“Professional, courteous, and very knowledgeable. They installed a new toilet for us, and the whole process was smooth from start to finish.”
“Had a clogged drain that no one else could fix. Cherny Plumbing came out, diagnosed the problem fast, and got everything flowing again. Lifesavers!”
“Cherny Plumbing fixed our leaky faucet quickly and professionally. The technician was friendly and left no mess behind. Highly recommend their services!”
We stand behind our work with a comprehensive workmanship guarantee, ensuring every repair and installation meets the highest standards of quality and durability. If you're not completely satisfied, we'll make it right.