Woman in straw hat smiles, holding wine glass near a lake.

Safely Install or Upgrade Critical Home Lines

Gas and water line installation and replacement in San Jose for appliances, additions, and remodels

When you add a gas range, install a tankless water heater, or build an addition that needs its own water supply, the existing lines in your San Jose home may not be sized or routed to handle the load. Cervantes Construction installs new gas lines and water lines for residential properties, working with both modern and older homes to deliver safe, code-compliant connections that support your upgrades without overloading the system.

This service includes running new lines from the meter or main supply, rerouting existing piping to avoid construction zones, and pressure-testing all connections before turning the system back on. It is commonly needed during kitchen remodels, bathroom additions, or when replacing old galvanized water lines that have begun to restrict flow.

If you are planning work that involves gas or water in your San Jose home, contact Cervantes Construction to confirm your infrastructure can support it.

What the Work Involves and Why It Matters

The job starts with an inspection of your current gas and water lines, followed by a plan that shows where new lines will run and what size piping is required in your San Jose home. Trenching, wall access, or attic routing may be involved depending on the layout and scope.

Once the work is complete, your appliances will operate safely and efficiently, water pressure will match what your fixtures are designed for, and you will not smell gas or see leaks at any connection point. All gas line work is tested with pressure gauges and leak detection fluid before final approval.

Permits are pulled when required, and inspections are scheduled to meet city standards. If your project involves coordination with other trades, the plumbing work is sequenced to avoid delays or rework.

What Homeowners Need to Understand First

People usually want to know whether their current lines can handle new appliances, how disruptive the work will be, and what safety measures are in place during installation.

What types of gas line work do you handle?
We install new lines for ranges, dryers, water heaters, and outdoor equipment. We also replace old steel lines with modern materials and reroute lines during remodels or additions.
How do you ensure gas line safety?
Every connection is pressure-tested and checked with leak detection solution before the gas is turned back on. We follow local code and work with the utility company when meter upgrades are required.
When is a water line replacement necessary?
If your home has galvanized steel piping and you are seeing rust or low pressure, replacement is usually the best option. We also replace lines that are undersized for new fixtures or additions.
How long does gas or water line installation take?
Simple appliance hookups can be done in a few hours. Running new lines across the property or through multiple rooms may take a full day or more, depending on access and complexity.
Will I need to leave the house during the work?
Not usually. Gas and water are shut off only during active installation, and service is restored the same day in most cases. We will let you know in advance if an overnight shutoff is required.

Cervantes Construction has handled gas and water line work across San Jose for years, including properties with original 1950s plumbing and new construction additions requiring full infrastructure. If your project involves upgrading or extending these systems, get in touch and we will walk you through what is required.