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San Ramon, Dublin & Pleasanton · New Construction Plumbing

Ground-up plumbing engineered for flawless performance from day one.

Choose Prime Time Plumbing for your new construction needs and let us bring our unparalleled skill and knowledge to your next project—from initial blueprint sizing and underground rough-in through final inspection.

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Available 24/7 Perfect 5-star rating on Google Licensed • Bonded • Insured
Free estimateKnow the recommended next step before work begins
24/7 responseReach the team whenever a plumbing problem hits
Licensed • Bonded • InsuredCalifornia License #1109508
Workmanship guaranteeWork backed by Prime Time Plumbing
Crews clean up before they leave— reviewers consistently mention it
5.0 on GoogleBased on 66+ customer reviews
Custom Homes, Commercial & Multi-Unit Builds

Designed and installed to the highest standards.

At Prime Time Plumbing, we excel in providing comprehensive plumbing services for new construction projects, with a particular focus on Accessory Dwelling Units (ADUs) and new home builds. Our expertise ensures that your plumbing systems are designed and installed to the highest standards, offering you peace of mind and lasting performance.

CSLB #1109508
Engineered Pipe & Meter Sizing Precise Drainage Fixture Unit (DFU) and water meter distance calculations so every inspection passes smoothly.
New construction underground plumbing rough-in and trenching by Prime Time Plumbing.
New construction underground plumbing rough-in and trenching by Prime Time Plumbing.
What’s included

Specialized Construction Services

Every installation, inspection, and repair is performed by our licensed, background-checked Tri-Valley plumbing crew.

Finished primary bathroom in a new construction home by Prime Time Plumbing
Ground-Up Custom Homes

New Home Construction (Slab & Crawlspace)

Whether you’re building on a slab or with a crawl space, Prime Time Plumbing has the expertise to manage all aspects of your new home’s plumbing system. Our team is experienced in working with various foundation types and can deliver high-quality installations that meet all regulatory requirements. From the initial planning stages to the final inspection, we ensure that every detail is meticulously handled.

  • Complete underground DWV, water main & gas rough-ins for slab and crawlspace foundations
  • Aboveground copper & PEX supply manifolds, venting & multi-bath rough-ins
  • Coordination with general contractors, architects, engineers & city inspectors
  • Flawless final trim installation for luxury kitchens, baths & mechanical rooms
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Precision copper and drain rough-in manifold by Prime Time Plumbing
Precision Engineering

ADU Builds, DFU Calculations & Meter Upsizing

We specialize in ADU construction, offering tailored solutions to meet the unique demands of these additional living spaces. Our engineers are fully trained in accurately sizing piping systems to ensure optimal functionality and compliance with all building codes. While many builders branch off existing sewer and water pipes without checking load capacity, they often overlook Drainage Fixture Units (DFUs) and meter distance.

  • Accurate Drainage Fixture Unit (DFU) load calculations to prevent future backups
  • Water meter sizing & distance calculations to guarantee strong water pressure
  • Main house sewer & water branching vs. dedicated utility service planning
  • Full compliance with California Plumbing Code & local Tri-Valley jurisdictions
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New construction framing and plumbing rough-in by Prime Time Plumbing
Turnkey Execution

From Blueprint to Final Inspection

Our commitment to excellence means that your new home’s plumbing will be installed efficiently and correctly, providing you with a system that functions flawlessly from day one. Trust Prime Time Plumbing for your new construction projects and experience the difference that expertise and dedication can make.

  • Phase 1 — Underground Rough: Trenching, bedding, sewer laterals, sub-slab DWV & hydrostatic testing
  • Phase 2 — Top-Out Rough: Copper/PEX water lines, vent stacks, gas lines, shower valves & air/water tests
  • Phase 3 — Finish Trim: Tankless heaters, freestanding tubs, custom showers, vanities & final sign-off
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Materials & Standards

Why Builders & Homeowners Choose Prime Time Plumbing

Licensed, bonded, and insured new-construction plumbing across San Ramon, Dublin, Pleasanton & the Bay Area.

Drainage Fixture Unit (DFU) Engineering

Adding DFUs can necessitate changes in required pipe sizing—we calculate exact loads upfront to prevent costly rework or drainage failures.

Water Meter & Pressure Sizing

The distance between a new unit and the main water meter impacts flow; we calculate whether meter upsizing or larger supply trunk lines are required.

Slab-on-Grade & Crawlspace Expertise

Proper pipe sleeving, insulation, hanger spacing, and grade slope across concrete slabs, post-tension foundations, and raised floors.

Inspection-Ready Rough-Ins

Clean, organized copper, PEX, cast iron, ABS, and MegaPress installations that pass municipal water, air, and Peppermint/pressure tests the first time.

High-End Finish Fixture Trim

From architectural linear drains and freestanding tubs to commercial multi-lavatory banks and tankless recirculation loops.

On-Schedule Trade Coordination

Direct communication with project managers, framers, electricians, and tile setters so your build stays on timeline.

Full-service plumbing

Explore All 6 Plumbing Services

One licensed Tri-Valley team for water, sewer, remodels, gas, new construction, and ADU plumbing.

Water Systems & Water Heaters

Water Systems & Water Heaters

Expert water line repair, tankless & tank water heaters, water softeners, whole-home filtration, and shower/shut-off valves in San Ramon, Dublin & Pleasanton.

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Drain & Sewer Specialists

Drain & Sewer Specialists

Compliant sewer lateral replacement, HD sewer camera inspections, backwater valves, cast iron/PVC/ABS/clay/Fuse Seal repiping & Certificates of Compliance in San Ramon, Dublin & Pleasanton.

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Repairs & Custom Remodels

Repairs & Custom Remodels

Luxury bathroom and kitchen plumbing remodels, freestanding tubs, custom showers, double vanities, rough-in to final fixtures, and 24/7 plumbing repairs in San Ramon, Dublin & Pleasanton.

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Licensed Gas Line Specialists

Licensed Gas Line Specialists

Licensed gas plumbing in San Ramon, Dublin & Pleasanton: MegaPress, Black Iron & Poly underground gas lines, fire pits, outdoor kitchens, pressure testing & leak repair.

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New Construction Plumbing
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New Construction Plumbing

Complete new construction plumbing in San Ramon, Dublin & Pleasanton: custom homes, ADU builds, slab & crawlspace rough-ins, DFU pipe sizing & water meter calculations.

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ADU Plumbing Specialists

ADU Plumbing Specialists

Specialized ADU plumbing in San Ramon, Dublin & Pleasanton: slab-on-grade vs crawlspace systems, sewer lateral tie-ins, DFU sizing, water meter upsizing & permits.

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Local service area

Proudly serving San Ramon, Dublin, Pleasanton & Surrounding Areas.

Based at 2010 Crow Canyon Place in San Ramon and serving homeowners, businesses, and builders across the Tri-Valley and East Bay.

San Ramon
Dublin
Pleasanton
Common questions

Construction Service FAQs.

Why are Drainage Fixture Units (DFUs) so important when adding an ADU or building a new home?

Every sink, toilet, shower, and laundry drain adds Drainage Fixture Units (DFUs) to your sewer and vent system. If a builder branches off existing pipes without calculating total DFUs, the pipe diameter may fail inspection or cause chronic backups. We size every line accurately before work begins.

How does distance from the water meter affect a new build or ADU?

Friction loss increases over long pipe runs. Depending on the distance from the street meter and total fixture count, the supply line or water meter itself may need to be upsized to maintain strong pressure when multiple fixtures run at once.

Do you work with both homeowners and general contractors?

Yes! We partner with general contractors, custom home builders, developers, and homeowner-builders across San Ramon, Dublin, Pleasanton, and the greater Bay Area.

How can I send you blueprints or plans for a bid?

Click "Free Quote Form" or text/call us at (510) 213-8213—we can review your architectural/plumbing plans and provide a detailed estimate.

Get the plumbing problem off your plate.

Start with a free quote. Prime Time Plumbing will take it from there.

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