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Hillsborough is one of the few towns on the Peninsula where every property is a private residence , no storefronts, no commercial strips, just established homes on generous lots. Many of those homes have been standing for 50 years or more, and the plumbing systems inside them reflect that age. In & Out Plumbing & Construction has been serving Hillsborough homeowners since 1999, handling everything from emergency calls to full sewer line replacements. Licensed (CSLB # 878184), insured, and experienced with the demands of high-value residential properties. Call 650-589-4855 any time.
Plumbing Services for Hillsborough Homes
Estate homes present a different set of plumbing demands than a standard residential property. Multiple bathrooms across significant square footage, detached guest houses or pool houses with their own water supply lines, older galvanized or cast-iron infrastructure that has never been replaced, and mature trees with root systems that have had decades to find their way into sewer laterals, these are the realities we work with regularly in Hillsborough. We bring the tools, licensing, and experience to handle all of it.
Our services cover the full scope of residential plumbing: emergency response, water heater repair and replacement, sewer line inspection and repair, drain cleaning, leak detection, repiping, gas line work, and fixture installation. Every job, regardless of size, gets the same attention to quality and the same respect for your property.
Emergency Plumber in Hillsborough — Available 24/7
A plumbing emergency in a large estate home carries a different scale of potential damage than a typical residential call. A burst pipe behind a finished wall, a sewage backup in a lower-level bathroom, or a failed water heater serving multiple bathrooms all require a fast, competent response, not a next-day appointment. In & Out Plumbing & Construction is available 24 hours a day, 7 days a week, 365 days a year for emergency plumbing throughout Hillsborough.
When you call our emergency line, you reach a live member of our team immediately. We dispatch a licensed plumber to your property as quickly as possible. Our service vehicles are stocked with the parts and equipment needed to diagnose and resolve most emergency situations in a single visit, minimizing disruption to your home and your household.
Emergency plumbing situations we respond to in Hillsborough include burst or leaking pipes, sewage backups, complete water heater failures, gas line concerns, flooding from appliance failures, and sudden loss of water pressure. Whatever the emergency, we respond with urgency and professionalism.
Emergency line: 650-589-4855 — available right now.
Water Heater Repair in Hillsborough, CA
Many of Hillsborough's estate homes were built in the 1940s through 1970s and may have had their water heaters replaced only once or twice in the decades since. Older homes on larger lots sometimes have multiple water heater systems serving different wings of the property, and tankless systems are increasingly common in remodeled Hillsborough properties where space efficiency and endless hot water are priorities.
In & Out Plumbing & Construction repairs, replaces, and installs all types of water heaters for Hillsborough residences, standard tank heaters, high-capacity tank systems for large homes, and both gas and electric tankless units. We service all major brands and handle the full installation including gas line adjustments, new venting where required, and the permit process with the Town of Hillsborough.
Common water heater issues we resolve in Hillsborough include sediment buildup from San Mateo County's moderately hard water, heating element and thermostat failures, corroded anode rods, and leaking pressure relief valves. If your water heater is more than ten years old, a diagnostic inspection can tell you whether repair or replacement is the more cost-effective path. We provide a clear, honest assessment before any work begins.
For emergency water heater repair in Hillsborough, call 650-589-4855, we offer same-day service and are available 24/7.
Sewer Line Services in Hillsborough, CA
Hillsborough's residential lots are large by Peninsula standards, and many properties have mature trees with extensive root systems, oaks, redwoods, and ornamental plantings that have had decades to grow. Those root systems are one of the leading causes of sewer line damage in Hillsborough, as roots naturally seek out the moisture and nutrients inside aging clay or cast iron sewer laterals, eventually cracking joints and restricting flow.
In & Out Plumbing & Construction provides sewer camera inspection, sewer line cleaning, sewer repair, and trenchless sewer line replacement throughout Hillsborough. Trenchless methods are particularly well suited to Hillsborough properties where preserving established landscaping, mature trees, and finished hardscaping is a priority. In many cases we can repair or replace a sewer line through small access points without excavating your yard.
If you have noticed slow drains throughout the house, sewage odors, or unexplained wet spots in the yard, these are early signs of a sewer line problem that are worth investigating before they become a more serious failure. A camera inspection is the fastest and most accurate way to know what you are dealing with.
Our Plumbing Services in Hillsborough, CA
In & Out Plumbing & Construction provides comprehensive residential plumbing services throughout Hillsborough. Our full service range includes:
- Emergency plumbing — 24/7, 365 days a year
- Water heater repair, replacement, and installation (tank and tankless)
- Sewer line camera inspection, repair, and trenchless replacement
- Drain cleaning and hydro jetting
- Leak detection and pipe repair
- Whole-home repiping — copper and PEX
- Gas line repair and installation
- Slab leak repair
- Fixture repair and installation — faucets, toilets, showers
- Bathroom and kitchen plumbing for remodels
- Water filtration and water softener systems
Serving Hillsborough and the Surrounding Peninsula
In & Out Plumbing & Construction serves Hillsborough and the neighboring Peninsula communities. If you are located in a nearby city, we serve you too:
Frequently Asked Questions — Plumber in Hillsborough, CA
Do you work on large estate homes in Hillsborough?
Yes. In & Out Plumbing & Construction regularly services Hillsborough's large residential properties, including multi-bathroom estate homes, properties with separate guest houses or outbuildings, and homes with complex plumbing systems across significant square footage. We understand the specific demands of high-end residential plumbing, discretion, clean workmanship, and respect for the property and we bring that standard to every Hillsborough engagement.
Do you offer 24/7 emergency plumbing in Hillsborough?
Yes. We are available 24 hours a day, 7 days a week for plumbing emergencies in Hillsborough, CA. When you call 650-589-4855, you reach a live member of our team who dispatches a licensed plumber to your property as quickly as possible. We do not use answering services for emergency calls. Whether it is a burst pipe, a sewage backup, or a water heater failure in the middle of the night, we respond with the same urgency.
How does Hillsborough's older infrastructure affect plumbing?
Many of Hillsborough's estate homes were built in the 1940s through 1970s, and a significant number still have original galvanized steel or cast iron pipe systems. Galvanized pipes corrode from the inside out over decades, gradually restricting water flow, discoloring water, and eventually failing. Cast iron drain lines develop cracks, joint separations, and root intrusion over time. These are issues we encounter and resolve regularly in Hillsborough. If your home is more than 40 years old and has not had a plumbing inspection, a camera inspection of the drain and sewer lines is a worthwhile investment.
Can you replace a water heater in a Hillsborough estate home?
Yes. We install and replace tank and tankless water heaters in Hillsborough properties of all sizes, including large estate homes that require high-capacity or multiple water heater systems. For larger homes, we often recommend tankless systems for their unlimited hot water supply and long service life, though we will assess your property and provide honest options for your specific situation. We handle the full installation including any required gas line adjustments, venting, and the San Mateo County permit process.
Does Hillsborough require permits for plumbing work?
Yes. The Town of Hillsborough requires permits for most plumbing installations and replacements, including water heater replacement, sewer line work, and whole home repiping. Permitted work is inspected by the town, ensuring it meets California plumbing code. In & Out Plumbing & Construction manages the permit process on your behalf, you do not need to navigate the town's permitting requirements yourself. All of our work is performed under CSLB License # 878184.
Are you licensed and insured to work in Hillsborough, CA?
Yes. In & Out Plumbing & Construction holds California State License Board (CSLB) License # 878184 and carries full liability insurance and workers' compensation coverage. We have been serving San Mateo County since 1999 and are fully qualified to perform residential plumbing work in Hillsborough. For high-value properties, we understand that contractor credentials and insurance coverage are a baseline expectation, and we meet it.
Contact In & Out Plumbing & Construction — Hillsborough, CA
Call In & Out Plumbing & Construction at 650-589-4855, available 24 hours a day, 7 days a week. We serve Hillsborough, Burlingame, San Mateo, Millbrae, and the entire San Mateo County Peninsula.
In & Out Plumbing & Construction | CSLB License # 878184 | 650-589-4855 | Serving San Mateo County since 1999