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Find Sump pump or interior foundation drains installers in Mill Valley

Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
4.63(
622
)

Angi Approved

In business since 1981

Warranties offered

Customers say: Super punctual

"The crew from Albert Nahman did a great job from start to finish. The project was to replace the original ductwork in our 60 year old house. Tom provided excellent advice for the estimate then Bryan’s crew did the job, 2 days, within a week of my acceptance of the proposal. Great work."
34 neighbors recently requested a quote
Recommended by88%of homeowners
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Avatar for Same Day Plumbing, Heating, Cooling
Same Day Plumbing, Heating, Cooling
New to Angi

Angi Approved

In business since 2023

Free estimates

Emergency services offered

Family-owned Same Day Heating, Cooling, Plumbing operates out of Windsor, just north of Santa Rosa. We offer fast, reliable AC repair and installation services, heater repair & installation, and plumbing services, in the North Bay area of California. Our promise to you is always that if we do not fix your system the SAME DAY we arrive… you DON’T pay the service fee. Our home service experts are licensed and insured with more than 100 years of leadership experience. Additionally, we back all of our installation and replacement services with a 24-month, 100% satisfaction guarantee.

111 neighbors recently requested a quote
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Avatar for Moore Home Services
Moore Home Services
4.80(
356
)

Angi Approved

In business since 2009

Free estimates

Customers say: Super punctual

"Orion C. Arrived on time with a friendly smile to perform my annual Fall checkup. He provided outstanding service - professional, knowledgeable, and always courteous throughout! My system runs perfectly and I would highly recommend their excellent service as represented by Orion! They are clearly committed to customer satisfaction."
58 neighbors recently requested a quote
Recommended by92%of homeowners
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Avatar for Amesos Plumbing Inc
Amesos Plumbing Inc
5.00(
1
)

Angi Approved

In business since 1977

Free estimates

Warranties offered

"So far so good. Snaking of kitchen sink with very old pipes. Hopefully snake did not poke pipes. Only time will tell. Keeping fingers crossed. They did a good job explaining and triple checked for leaks before they left. Of course they tried to upsell and gave us a metal trap they did not quote us upfront for. We would have chosen it over plastic, but price difference would need to be cleared upfront. That's the only negative. Otherwise, thus far we are very happy with the result. Thank you for coming on such short notice and on time! Super appreciated. 4.5-5 stars."
Recommended by100%of homeowners
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Avatar for Peter Levi Plumbing, Heating, Cooling, Drains
Peter Levi Plumbing, Heating, Cooling, Drains
3.60(
10
)

Angi Approved

In business since 1990

Free estimates

Warranties offered

"It went very well; the thorough HVAC system checkup revealed some questionable component that were best suggested to be replace with new ones. I am not confident that my HVAC system is set for more that good performance going forward. I appreciated the non-pressured advice and suggestions in coming to my decisions. Thank you, Joaquin Ortiz."
7 neighbors recently requested a quote
Recommended by70%of homeowners
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TH Adams Construction
5.00(
1
)

In business since 1992

General Building Contractor, New residential and commercial construction. Remodeling and T.I.work for offices.

Recommended by100%of homeowners
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Showing 1-10 of 1009
FAQs for sump pump or interior foundation drains installation projects in Mill Valley, CA

Most residential pumps draw approximately 1,300 to 2,900 watts when they first start, then settle at roughly 800 to 1,050 watts during normal operation. The exact number depends on the motor’s horsepower and how often the float switch tells the pump to run. Even at the high end, the electricity cost is minor compared with the expense of cleaning up a flooded basement.

Grab a ruler and an empty 18‑inch‑wide pit. During a steady rain, time how much the water rises in one minute. Multiply that depth (in inches) by 60 to calculate gallons per hour, then add 50% for safety. If the result tops 2,100 gallons per hour—about 35 gallons a minute—you’ll need a 3/4‑horsepower unit. Anything lower, and a 1/3- or 1/2-horsepower pump should do the trick.

Loud rattling, constant cycling, or shuddering vibrations are the pump’s way of telling you it’s on its last legs. Musty smells, higher electric bills, and visible rust are other red flags. If the unit is 10 years old or older and exhibits any of these symptoms, replace it before the next heavy rain turns your basement into a wading pool.

You don’t have to hire a licensed plumber, but you should still bring in someone who installs sump pumps for a living—whether that’s a plumber, basement‑waterproofing specialist, or experienced handyman. They know the local codes, can wire the pump safely, and will test the system before they leave. Skipping professional help might void the warranty and could leave you with a pump that fails when you need it most.

Not every basement needs a pump, but if your home sits in a floodplain, has a high water table, or has ever taken on water during a storm, a sump pump is inexpensive insurance. For basements that only struggle with condensation or the occasional damp spot, sealing cracks and improving drainage may be all that is needed.

The Mill Valley, CA homeowners’ guide to sump pump or interior foundation drains installations

From average costs to expert advice, get all the answers you need to get your job done.

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