Custom Estate Plumbing for Hillsborough's New Builds & Renovations
Ground-up custom estate builds in Hillsborough require plumbing systems that match the extraordinary standards of the home. We coordinate directly with architects and general contractors to engineer systems that integrate seamlessly — from radiant floor heating and multi-zone tankless water heating to outdoor kitchens and pool houses. Every connection, every fixture, every system is designed for the long term.
Whether you're building from the ground up, undertaking a major whole-house renovation of a historic estate, or adding a guest house or pool house, we bring the coordination, premium materials, and engineering expertise these projects demand. We understand Town of Hillsborough permit requirements and work within their process to keep your project moving.
New Construction Plumbing Services for Hillsborough Estates
Why Hillsborough Estates Choose GB Plumbing
Architect & Designer Coordination
We work directly with your design team to resolve conflicts and ensure plumbing integrates seamlessly with the architectural vision. From initial plan review through final fixture placement, we're at the table preventing costly change orders.
Premium Material Standards
Type L copper, ProPress fittings, commercial-grade valves — matching estate quality throughout. We specify and install materials that meet the extraordinary standards of Hillsborough's finest homes, ensuring longevity and performance for decades.
Complex System Engineering
Radiant heating, tankless cascade, recirculation loops — designed as an integrated system, not afterthoughts. We engineer these complex systems to work together efficiently, providing comfort and performance that matches the home's luxury standards.
Our New Construction Process
Design Collaboration
We work with your architect and GC from the earliest design stages, reviewing plans for plumbing integration, identifying potential conflicts, and engineering systems that complement the home's architecture.
System Engineering & Permits
Complete plumbing system design with detailed drawings, followed by Town of Hillsborough permit submission. We handle all documentation and coordinate with the building department on your behalf.
Phased Installation
Underground rough-in, above-ground rough, top-out, and finish — each phase coordinated with other trades and scheduled to keep your project on timeline. Inspections passed on the first attempt.
Commissioning & Integration
Complete system testing, smart home integration, and client walkthrough. Every fixture, every system, every zone verified for performance before handover to the homeowner.
Estate-Quality Plumbing — Engineered from the Ground Up
From design collaboration to final commissioning, GB Plumbing delivers new construction plumbing systems that match the extraordinary standards of Hillsborough's custom estates.
(650) 235-6443Our Happy Clients
Real people. Real results. See why homeowners across the San Francisco Bay Area trust GB Plumbing for all their plumbing needs.
🇺🇸 🇧🇷 🇪🇸 We speak English, Portuguese and Spanish
"GB worked hand-in-hand with our architect from day one. Zero plumbing conflicts, zero change orders. The coordination alone saved us tens of thousands."
— Hillsborough Custom Build Owner Google Review
"Our 1920s estate needed a complete plumbing overhaul without destroying original details. GB modernized everything — radiant heat, tankless — while preserving the home's character."
— Hillsborough Renovation Client Google Review
"Pool house addition with full bath, wet bar, and outdoor shower. GB engineered the whole system to tie into our existing lines perfectly. Flawless execution."
— West Hillsborough Resident Google Review
"Third ground-up estate we've built with GB. They understand the level of quality Hillsborough demands — Type L copper throughout, perfect rough-ins, inspections passed first time every time."
— Hillsborough Property Developer Google Review
"Outdoor kitchen with gas, hot and cold water, drainage — plus fire feature gas lines. GB designed it all as one integrated system. Works beautifully for entertaining."
— North Hillsborough Homeowner Google Review
"Whole-house radiant floor heating — 8 zones, perfectly balanced. Every room is exactly the temperature we want. GB's engineering made a complex system feel effortless."
— Hillsborough Family Google Review