Serving Mill Valley, CA

Local contractor in 94941

In Mill Valley, CA 94941, the lush landscape and older homes often lead to plumbing challenges that require our expertise. We specialize in addressing issues like drainage malfunctions and outdated fixtures, ensuring that local residents enjoy reliable plumbing systems. One recent project involved replacing a malfunctioning 50-gallon water heater for a homeowner near Mount Tamalpais, restoring their hot water supply efficiently. Our customer praised our professionalism, stating, "Big Island Plumbing has been our go-to for years." With the combination of mature trees and vintage infrastructure, regular maintenance is essential to keep plumbing systems running smoothly in our beautiful community.

Mill Valley, CA · 94941 37 local projects 8 reviews 5 avg. rating
See our recent work

Recent projects near 94941

Real work completed for homeowners in Mill Valley and the surrounding areas.

We upgraded the drainage system in this residential bathroom by replacing the Waste & Overflow assembly and P-trap, ensuring reliable performance.

Replace Waste & Overflow And P-trap

In addressing a malfunctioning drainage system, we removed and disposed of the existing Waste & Overflow assembly before installing a new assembly. We also installed a new P-trap assembly and a section of the drain branch, concluding the process by testing the entire drain assembly for leaks to ensure reliable operation.

Remove And Replace Water Heater

Remove And Replace Water Heater

After identifying the need for a more efficient water heating solution, we removed the existing water heater and replaced it with a new unit. This included installing new earthquake bracing straps, water and gas shut-off valves, and ensuring proper gas flex and sediment traps were set. Additionally, we added grounding clamps and directed the T&P drain up to 5 feet to an approved location, along with a new thermal expansion tank. Permit fees and any required inspections were not included in the quote.

Install 1-1/2'' Gas Seismic Shut-off Valve

Install 1-1/2'' Gas Seismic Shut-off Valve

To enhance safety and comply with regulations, we installed a 1½" gas seismic shut-off valve. After the installation, we thoroughly tested and purged the system to ensure its reliability and optimal performance, providing peace of mind that everything is functioning correctly.

Install 1'' Moen Smart Water Monitor Sensor.

Install 1'' Moen Smart Water Monitor Sensor.

To enhance water monitoring, we installed a 1-inch Moen Smart Water Monitor Sensor. After installation, we thoroughly tested and flushed the water system to ensure optimal performance and reliability. This process guarantees that the customer has accurate real-time data on water usage and potential leaks.

Upgraded an outdated faucet and installed an air-gap soap dispenser, enhancing both functionality and style in the kitchen.

Install Kitchen Faucet, Air-gap Soap Dispenser

Replacing an outdated faucet can greatly enhance a kitchen's functionality. We installed a new kitchen faucet along with an air-gap soap dispenser, ensuring a seamless integration into the existing setup. This upgrade not only improved usability but also added a modern touch to the customer's space.

Replace Sink-Basket Strainer

Replace Sink-Basket Strainer

A worn-out kitchen sink basket strainer can lead to leaks and poor drainage. We removed the old strainer and installed a new one, ensuring a secure fit to prevent any future water issues. This upgrade enhances both functionality and longevity of the sink.

Efficiently drained and prepped a residential hot tub for maintenance, ensuring optimal enjoyment for owners.

Drain Hot Tub With Pump

A hot tub filled to capacity can lead to water stagnation and potential maintenance issues. We drained the hot tub using a powerful pump, ensuring all the water was efficiently removed. This process prepared the hot tub for cleaning and maintenance, allowing for an optimal spa experience for future use.

When the old 50-gallon water heater began leaking, we replaced it with a new unit, restoring comfort and hot water flow.

Remove And Replace 50 Gallon Water Heater

When the old 50-gallon water heater began leaking, we quickly assessed the situation and determined a replacement was necessary. We efficiently removed the faulty unit and installed a new, reliable water heater, restoring hot water flow and ensuring the home’s comfort. The entire process was completed with precision and care, leaving the plumbing system fully operational.

We optimized the water system at a residential property, ensuring consistent pressure and safe supply.

Install Pressure Reducing Valve; Ball Valve And Back-flow Device

Water pressure fluctuations can cause significant issues, so we installed a pressure reducing valve to ensure consistent flow. Additionally, we fitted a ball valve for easy shut-off and a backflow device to prevent contamination, ensuring a reliable and safe water supply.

Remove And Replace 50 Gallon Water Heater

Remove And Replace 50 Gallon Water Heater

A malfunctioning 50-gallon water heater can disrupt daily routines, leading to cold showers and inconvenience. We removed the old unit and expertly installed a new 50-gallon water heater, ensuring a reliable supply of hot water for all household needs. This replacement enhances comfort and efficiency in the home.

Hydro Jet Upper Ejector Pump Discharge Pipe

Hydro Jet Upper Ejector Pump Discharge Pipe

A malfunctioning upper ejector pump posed a challenge for effective water disposal, necessitating swift action. We utilized a hydro jet to clear the discharge pipe, ensuring optimal flow and performance. By addressing the blockage efficiently, we restored the pump's functionality, providing a reliable solution for the customer's needs.

A leaking, outdated kitchen faucet was replaced with a modern fixture, enhancing functionality and protecting against future leaks.

Remove And Replace Kitchen Faucet

The old kitchen faucet was severely outdated and leaking, causing inconvenience and potential water damage. We promptly removed the old fixture and installed a modern, efficient faucet, ensuring proper connections were made to prevent future leaks and enhance functionality in the kitchen.

Laundry Remodel

Laundry Remodel

In need of a functional upgrade, we installed a new laundry box and a utility sink to enhance the customer's laundry space. This improved setup now ensures better water management and convenience for daily tasks. The installation was completed efficiently, leading to a significant improvement in the overall functionality of the area.

Replace Toilet Fill Valve

The old toilet fill valve was causing continuous water flow issues, leading to inconvenience and potential water waste. To resolve this, we removed the faulty fill valve and installed a new, efficient valve, restoring proper function to the toilet and ensuring reliable operation. The problem is now fully addressed.

Install 1-1/4'' Gas Seismic Shut-off Valve

To enhance safety measures, we installed an 1-1/4" gas seismic shut-off valve test and purge system. This system ensures prompt gas shut-off during seismic events, providing an essential layer of security for residential gas lines. We meticulously executed the installation, ensuring all components are functioning optimally and meet industry standards.

Building Sewer Drain Partial Repipe

Building Sewer Drain Partial Repipe

An outdated sewer drain line prompted the need for a partial repipe to enhance functionality. We removed sections of the old pipe and installed new, durable materials to ensure efficient waste removal and prevent future issues. The reinforced connections guarantee reliability and longevity for the plumbing system.

Corroded copper pipes and oxidized ball valves were replaced, ensuring a reliable plumbing system and peace of mind.

Remove & Replace Corroded Copper Pipe And Oxidized Ball Valves

Corroded copper pipes and oxidized ball valves can lead to serious plumbing issues. We removed the damaged sections and replaced them with high-quality materials, ensuring a robust and reliable plumbing system for improved water flow and performance. This necessary upgrade prevents potential leaks and system failures, providing peace of mind for years to come.

Remove And Replace Toilet Flush Gasket

Remove And Replace Toilet Flush Gasket

A malfunctioning flush system in a Kohler toilet required our attention due to a leaky O ring gasket. We promptly replaced the damaged gasket to restore proper function and eliminate unwanted leaks, ensuring the toilet operates efficiently once again. This essential repair enhances the overall performance of the bathroom fixture.

Drain Cleaning.

Drain Cleaning.

A clogged kitchen drain was causing inconvenience for the homeowner, disrupting daily activities. We tackled the issue by performing thorough drain cleaning on the kitchen line, effectively clearing the blockage and ensuring a smooth flow. Our prompt and efficient service restored proper drainage, allowing the homeowner to comfortably resume their routines.

Remove & Replace Ball Valve, PRV And Add Expansion Tank

Remove & Replace Ball Valve, PRV And Add Expansion Tank

There was a need to improve the plumbing system's efficiency due to issues with the existing ball valve and pressure reducing valve (PRV). We successfully removed and replaced both components, and added an expansion tank to enhance performance and reduce water pressure fluctuations. This upgrade ensures a more reliable and efficient water delivery system for the residential property.

Toilet Flange/Closet Bend And Angle Valves Replacement

Toilet Flange/Closet Bend And Angle Valves Replacement

When complications arose with the toilet installation, we promptly replaced the toilet flange, closet bend, and angle valves to ensure a secure and efficient connection. Our meticulous work restored functionality, preventing any leaks and enhancing overall plumbing performance. This thorough service guarantees peace of mind for the homeowner.

Bath-tub And Lavatory Drain Repipe

Bath-tub And Lavatory Drain Repipe

A persistent leak in the bath-tub and lavatory drains prompted us to undertake a comprehensive repipe. We carefully removed the old piping, identifying sections that had degraded over time, and replaced them with high-quality, durable materials to ensure optimal performance and longevity. The job was completed with precision, restoring the system's functionality and providing peace of mind.

Garbage Disposal Replacement

Garbage Disposal Replacement

A persistent leak from the garbage disposal prompted immediate action. We efficiently replaced the old unit, ensuring a secure installation that safeguards against future leaks while enhancing the kitchen's functionality. The replacement was completed with care and precision, leaving the customer with a dependable garbage disposal system.

Sewer Lateral Camera Inspection

Sewer Lateral Camera Inspection

To ensure a thorough evaluation of the property's plumbing, we conducted a sewer lateral camera inspection prior to the home purchase. This high-tech examination allowed us to identify any potential issues within the sewer line, providing critical insights for informed decision-making. By capturing real-time footage, we ensured the prospective buyer had the necessary information regarding the property's drainage system.

Remove And Replace Lavatory Faucet

Remove And Replace Lavatory Faucet

A worn-out lavatory faucet was causing leaks and inconvenience. We efficiently removed the old fixture and carefully replaced it with a new, high-quality faucet, ensuring proper installation and functionality. This upgrade improved water flow and enhanced the bathroom’s overall aesthetics.

Remove & Replace Shower Cartridge

Remove & Replace Shower Cartridge

A malfunctioning shower cartridge can lead to poor water flow and inconsistent temperature control. We addressed these issues by removing the old cartridge and replacing it with a new, high-quality unit. This ensured smooth operation and a comfortable shower experience once again. The installation was completed efficiently, restoring the customer's satisfaction with their shower.

Bathroom Remodel

Bathroom Remodel

The outdated fixtures in the bathroom called for a fresh update. We replaced the old toilet with a modern, efficient model, installed a stylish new vanity, and transformed the shower area to enhance both functionality and aesthetics. The result is a beautifully remodeled space that meets contemporary standards while offering comfort and style.

Install New Moen Smart Monitor

Install New Moen Smart Monitor

The existing shower system required an upgrade, so we installed a new Moen Smart Monitor for enhanced temperature control and safety. This advanced fixture ensures a more comfortable and efficient showering experience, while providing seamless integration with smart home systems. Overall, the installation improved both functionality and user experience.

Make Water Stub Outs Higher For Laundry Machine.

Make Water Stub Outs Higher For Laundry Machine.

To ensure proper installation of the laundry machine, we raised the water stub outs to the appropriate height. This adjustment provides better functionality and accessibility for the appliance, making it easier for the customer to connect their laundry equipment securely. The modification ensures an optimal setup for hassle-free use.

Remove And Rebuild Kitchen Sanitary Tee With Clean-out Access.

Remove And Rebuild Kitchen Sanitary Tee With Clean-out Access.

The existing kitchen sanitary tee was causing drainage issues and required urgent attention. We removed the damaged tee and expertly rebuilt it, ensuring to include clean-out access for future maintenance. This strategic upgrade enhances the kitchen's plumbing efficiency and accessibility, providing long-lasting reliability for the homeowner.

What Mill Valley homeowners are saying

A 5★ average rating from 8 verified reviews.

Josh House
Aug 8, 2026

Have worked with Tai and Big Island several times and am super happy with the work…always on time, professional and the work is done perfectly at a fair price.

filaberg
May 11, 2026

Formally luxurious faucet couldn’t be repaired at first, but Big Island and Tai made things right in the end. A new faucet that works! and no additional costs. Thank you for your efforts and quick resolution. I’d highly recommend them.

J Feigal
Apr 25, 2026

Tai did a fantastic job with our laundry room remodel. He replaced and moved the ancient washing machine valves and plumbed a new sink. We would definitely use him again!

Stefanie Etow
Apr 21, 2026

Big Island Plumbing has been our go-to for years. I can always rely on Tai to not only fix our plumbing problems, but to also educate and show me what might be happening. Glenn is always responsive and communicative in coordinating fast and efficient service, so I always feel like we’re in good hands. They are the absolute best and I highly recommend their services.

Alex Stadtner
Feb 27, 2026

Big Island Plumbing was professional, on-time, friendly, knowledgeable, and got the job done!

Diane Bloch
Oct 8, 2025

Big Island Plumbing has done a couple jobs for my mom who lives in Marin, two hours from where I live. They are super communicators with both of us —easy to reach and schedule with, they send text and email confirmations, arrive promptly and explain different options clearly. Since I am coordinating a lot of different maintenance projects from afar, I really appreciate that I can communicate with them so easily and trust them. My mom says they are friendly, knowledgeable and tidy. We’re grateful to have them on our maintainable team!

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