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Allstar Plumbing

Plumbing & Gas Line Installation & Repair
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Alameda  San Mateo  Santa Clara Counties
Diamond Certified Company Report
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Allstar Plumbing
191 SURVEYS
  • star image
  • star image
  • star image
  • star image
  • star image
  • Rating
6 CONSECUTIVE YEARS
SINCE FEBRUARY 2020
CERT 2591

Diamond Certified Ratings Dashboard

191

Verified Customers

Surveyed

Customer Loyalty

Customer Satisfaction

Helpful Expertise

READ ALL 191 SURVEY RESPONSES

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

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  • Researched Articles & Profile
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Diamond Certified Company Report SUMMARY UPDATE February 2025

Company summary image
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Allstar Plumbing

Rated Highest in Quality and Helpful Expertise for 6 Consecutive Years.

Quick Summary

  • Diamond Certified since 2020
  • Provides plumbing installation, maintenance, and repair services for residential and commercial clients in Santa Clara, San Mateo, and Alameda Counties
  • Available 24/7 for plumbing emergencies
  • Offers a flat-rate pricing menu for plumbing work

Top News Updated

INDUSTRY PARTNERSHIPS

Allstar Plumbing has teamed up with Carbon Zero Buildings in an effort to reduce carbon emissions in the Bay Area.

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TRENDING PROJECTS

Allstar Plumbing recently began a project to remove 348 gas-fired water heaters and replace them with electric, hybrid, and heat pump water heaters. This is the company’s first project with Carbon Zero Buildings.

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Top Survey Responses

From a recent Diamond Certified Survey Response: “We’ve been using Allstar Plumbing since we moved into [our] house. They’re very professional, they always find a way to squeeze us in on the same day and they make sure everything is done correctly.”

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From a recent Diamond Certified Survey Response: “I loved their responsiveness. Steve came out in the afternoon and stayed here after hours to fix [the issue]. I was so satisfied.”

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All-Star Employees

Allstar Plumbing recently hired a new technician who is so dedicated to customer service that during his first month, he received 5-star Google and Yelp reviews from 62% of his customers.

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Allstar Plumbing
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Diamond Certified Researched Articles on Allstar Plumbing

researched article

A look at Allstar Plumbing’s fleet of service trucks

Allstar Plumbing provides a complete range of plumbing services for residential and commercial clients in Santa Clara, San Mateo, and Alameda Counties. In addition to installing, maintaining and repairing all types of plumbing fixtures, the company has the training and equipment to work on sewer lines, repair and replace water heaters, install copper piping, and more.

Manager Steve Schafer says much of Allstar Plumbing’s success can be attributed to its “customer first” business approach. “We strive to give our customers the best possible value, and that includes keeping their homes clean and bringing certain issues to their attention so they can avoid costly repairs in the future. We put our clients’ needs before our own and draw upon our years of experience to ensure their satisfaction.”

Allstar Plumbing sends a fully stocked box truck to every jobsite, which Mr. Schafer says is important for ensuring quick, efficient work. “Our trucks carry more than 400 different parts, which saves our customers time and money because we don’t have to run to the store if we need something. Ultimately, we want them to think of us as a one-stop solution for all their plumbing needs.”

“Our goal on each job is to create a customer for life, and the best way to accomplish that is to provide excellent work and top-notch customer service at a great value. From the first phone call to our comprehensive follow-up, we adhere to the highest levels of professionalism and workmanship in everything we do.”

To find value in a plumbing company, make sure you synchronize its abilities with your needs.
Homeowners often struggle with choosing the right contractors to work on their homes. Prices, specialties, services and personalities differ, and it can be stressful to determine which company can best meet your needs. Steve Schafer, manager of Allstar Plumbing in San Jose, sheds some light on why pricing varies among plumbing companies. “Larger companies often have higher rates than small companies because they have more overhead,” he explains. “Those companies aren’t able to compete with the prices of plumbers who are barely more than handymen or who have small shops.”

Contractors with brick-and-mortar offices may have to charge more for their services to maintain their facilities and employ office staff, but some customers feel more comfortable dealing with a company that has a physical location. Additionally, plumbers who are licensed, insured, bonded and enrolled in continuing education have to charge higher prices than unlicensed contractors or those that only maintain the bare minimum to legally stay in business. Likewise, companies with more than one plumber on staff may be able to offer faster service, more appointment availability and plumbers who specialize in certain aspects of the trade.

Still, Mr. Schafer warns that homeowners need to check the qualifications of any plumbing company they hire. “Just because a plumber works for someone who has a contractor’s license doesn’t mean that person knows what they’re doing,” he says. In fact, companies can hire anyone and allow them to work under the company license, regardless of whether that individual is licensed. That means the onus is on homeowners to vet each company’s business history, employee training and licensing protocol.

When hiring a plumber or other contractor, it’s important to consider your needs and expectations and interview candidates with those details in mind. This will help you coordinate your needs and their offerings of value, professional qualifications, scheduling, and overall service.

Maintaining customer satisfaction is a crucial aspect of any business, but it’s even more important for plumbing companies that have earned the prestigious Diamond Certified award. For Allstar Plumbing, keeping clients happy comes down to a three-tiered approach: using top-grade materials, offering long warranties, and employing a team of expert plumbers who show up on time and take care of customers’ homes. “Our goal on every job is to create a happy, satisfied customer for life,” says Manager Steve Schafer. “At the end of the day, we want our clients to think of us as a one-stop solution for their plumbing needs.”

Allstar Plumbing has been providing plumbing services for residential and commercial clients in Santa Clara, San Mateo, and Alameda Counties since 1996. In addition to installing, maintaining and repairing plumbing fixtures, the company has the in-house capabilities to work on sewer lines, install copper piping, repair and replace water heaters, and more.

Unlike less experienced plumbing companies that take on too many projects and provide their clients with unrealistic service windows as a result, Allstar Plumbing works with its customers’ schedules whenever possible and stays in contact with them so they know what to expect. “When we set an appointment within a one- to two-hour window, we’ll call right before we come over, and if someone needs us to come out right away, we can usually get a plumber to them within 60 minutes,” explains Mr. Schafer. “We want to be available for our customers at times and prices that work for their lives, even if it’s a weekend or holiday.”

Ultimately, Mr. Schafer sees Allstar Plumbing’s dedication to providing the best possible value as its most important attribute. “The fact that we only use top-grade plumbing products means we’re not the cheapest company out there, but we give long warranties and do every job correctly the first time, so our customers get a great value. We’re consistent and fair, and we follow up after every job to make sure the client is completely satisfied with our work.”

Diamond Certified Researched Capabilities on Allstar Plumbing

Service Area

Santa Clara County
San Mateo County
Alameda County
Serving Santa Clara, San Mateo and Alameda Counties

Main Services

Plumbing
  • Commercial Plumbing
  • Drain Cleaning
  • Emergency Plumber
  • Gas Pipe Repair
  • Leak Detection
  • Plumbing Services
  • Sewer Pipe
  • Toilet Repair
  • Water Heater Installation
  • Water Heater Repair
  • Water Heater Replacement
  • Water Lines
Gas Line Installation & Repair
  • Copper Gas Lines
  • Gas Dryer Connectors
  • Gas Line Repair
  • Gas Lines For Stoves
  • Gas Pipe Fitting
  • Gas Pipes
  • Natural Gas Pipe Lines
  • Pex Fittings

Additional Services

Plumbing Installation, Maintenance & Repair
Sewer Line Installation & Repair
Water Heater Repair & Replacement
Copper Repiping

Company Info

Hours
Mon
07:00 am - 10:00 pm
Tue
07:00 am - 10:00 pm
Wed
07:00 am - 10:00 pm
Thu
07:00 am - 10:00 pm
Fri
07:00 am - 10:00 pm
Sat
07:00 am - 10:00 pm
Sun
07:00 am - 10:00 pm
Open Now
Mon – Sun: 7am – 10pm
24/7 Emergency Service Available
Website
Contact
Allstar Plumbing

Capabilities Table

Company Name
Allstar Plumbing
Phone Number
DCID Number
DCID4082827020
Managers
Sergio Alvarez, Manager
# of Employees
15
License
732611
Memberships
Better Business Bureau, HomeAdvisor
Insurance
Liability Insurance,
Workers’ Compensation
Founded
1996
Customer Type
Residential, Commercial
Warranties & Guarantees
Warranties Vary Depending on Job
Payment Accepted
american express,
discover,
mastercard,
visa

Certifications & Awards

diamond certified logo

Brands

capabilities award
capabilities award
capabilities award

Key Factors

Allstar Plumbing Established in 1996
Established in 1996
Allstar Plumbing Emergency 24/7
Emergency 24/7
Allstar Plumbing Special Discount
Special Discount
Allstar Plumbing Residential & Commercial
Residential & Commercial
Allstar Plumbing Free Quotes & Consultations
Free Quotes & Consultations
Allstar Plumbing Weekend Hours
Weekend Hours
Allstar Plumbing Appointments Available
Appointments Available
Allstar Plumbing Fixed Pricing
Fixed Pricing
Allstar Plumbing Diamond Certified Expert Contributor
Diamond Certified Expert Contributor
Allstar Plumbing Worksmanship Guaranteed
Worksmanship Guaranteed

Select Photos From Allstar Plumbing

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Allstar Plumbing
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Picture of Allstar Plumbing - Allstar Plumbing
Picture of Allstar Plumbing - Allstar Plumbing
Picture of Allstar Plumbing - Allstar Plumbing
Picture of Allstar Plumbing - Allstar Plumbing

Diamond Certified Expert Contributor Advice & Tips

Steve Schafer is a manager at Allstar Plumbing, a Diamond Certified company. He can be reached at (408) 290-9870 or by email.

Steve Schafer is a manager at Allstar Plumbing, a Diamond Certified company. He can be reached at (408) 290-9870 or by email.

Steve Schafer: A Helping Heart

By James Florence, Diamond Certified Resource Reporter

When Steve Schafer first got into plumbing, he was merely looking for a steady paycheck, but in the end, his career turned out to be more rewarding than he’d ever expected. “After being in construction for several years, I suddenly found myself out of work,” he remembers. “I heard that plumbers made pretty good money, so I applied for a job. After I got started, I found that I really enjoyed it. I especially liked the fact...

Read Full Article - Steve Schafer: A Helping Heart

Allstar Plumbing Website and External Feeds

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FAQs

By Allstar Plumbing

How much will it cost to fix my plumbing issue?

How quickly can you get to my job?

Will you have to leave my job to get parts or tools?

Do you recommend copper or PEX for repiping?

Will you have to tear up my yard for a sewer line replacement?

Do you offer emergency services?

Do you offer any discounts?

Allstar Plumbing Ratings and Survey Responses

diamondcertified logo
Allstar Plumbing
191 SURVEYS
  • star image
  • star image
  • star image
  • star image
  • star image
  • Rating
6 CONSECUTIVE YEARS
SINCE FEBRUARY 2020
CERT 2591

Diamond Certified Ratings Dashboard

Customer Satisfaction

Customer Loyalty

Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

Phone Survey Responsesfrom 191 Verified Customers

Rebecca R.

They came almost as soon as I called and they resolved what they could and they did something diagnostic that they had to come back for, but at least they got our plumbing working and when they came back, they applied the cost of the emergency response to the work that needed to be done, which ultimately saved us a few hundred dollars. I worked with a plumber named Larry who was really informative and told us what needed to be done and it was just quality service. Their prices were reasonable and they came when we really had a need.

Quality service and responsive

Verified Customer of Allstar Plumbing, 1 of 191

10 Quality
Yes Loyalty
Craig H.

They will do a second job for me on Saturday and when we had the first job done, they were absolutely fantastic. They were johnny on the spot and the same guy is going to come for the second job. I requested that he bring his buddy as well, so we are very pleased with them.

Mainly because we had one of their competitors out and we have now found out that they didn't do what they were supposed to do. Sergio found it all out and pointed it all out and took time to explain it to us and things like that. When he gave us a quote, it was very fair and you can't say enough good things about him.

Verified Customer of Allstar Plumbing, 2 of 191

10 Quality
Yes Loyalty
Linda B.

They were punctual for the appointment and really responsive to the call. I had gotten a new stove and hooked it up to the gas line but didn't realize I had to have someone hook it up for me, so they came right out.

Trustworthy, I would feel comfortable if they came when I wasn't home.

Verified Customer of Allstar Plumbing, 3 of 191

10 Quality
Yes Loyalty
Bill L.

We have been using Allstar since we moved to this house. They are very professional, they always find a way to squeeze us in the same day, and they make sure everything is done correctly.

They care about their customers.

Verified Customer of Allstar Plumbing, 4 of 191

10 Quality
Yes Loyalty
Queen Q.

I appreciate how they came to look at the issue and it was a teaching moment for them as well. They had other plumbers there and they were teaching them and we were there as well.

Just the customer service overall, they were friendly, helpful, and informative.

Verified Customer of Allstar Plumbing, 5 of 191

10 Quality
Yes Loyalty
Jayden T.

They are good people and do a good job. They are just way too expensive. If you can afford it, go with them, but if you can't, you should go with someone else.

Good quality work, nothing wrong with the work, fantastic people, and they know what they are doing .They fix it the way it should be done, but it is just the cost that is the concern.

Verified Customer of Allstar Plumbing, 6 of 191

10 Quality
Yes Loyalty
Candy C.

I loved the responsiveness. Steve came out in the afternoon and stayed here after hours to fix what had to be fixed immediately. I was so satisfied.

The technician came out and found the issue immediately. He said what it was and what needed to be fixed. He fixed my issue the same day. Within two hours, the plumbers were out here. I just want to say thank you very much.

Verified Customer of Allstar Plumbing, 7 of 191

10 Quality
Yes Loyalty
Monica G.

That they were quick, efficient, they knew what they were talking about, and they explained what the problem was really well.

They did the job quickly.

Verified Customer of Allstar Plumbing, 8 of 191

10 Quality
Yes Loyalty
Bill R.

The man who came out was fantastic and he was really professional. He fixed the problem and he was as nice as can be.

They did a good job and they were fabulous.

Verified Customer of Allstar Plumbing, 9 of 191

10 Quality
Yes Loyalty
Bruce C.

I don't know. I guess I would tell someone that they are a professional company and that they are priced fairly.

I think the price and the guy who came out, he was very informative.

Verified Customer of Allstar Plumbing, 10 of 191

10 Quality
Yes Loyalty
Ron C.

They were very prompt, they did a very professional job, and it was over and beyond our original expectations.

Just their attention to detail

Verified Customer of Allstar Plumbing, 11 of 191

10 Quality
Yes Loyalty
Cal G.

They were very professional. I trusted them and I felt confident about the way they explained things to me.

For one, I felt that I could trust them. He didn't seem like someone I couldn't trust. He was very nice.

Verified Customer of Allstar Plumbing, 12 of 191

10 Quality
Yes Loyalty
Gil V.

The young guy, I think his name was George, he was pretty good, fast and explained everything he was doing.

Just that he did good work and I'm satisfied.

Verified Customer of Allstar Plumbing, 13 of 191

10 Quality
Yes Loyalty
Grace S.

I have told my family that they were reliable and helpful. He was affirmative about what he was doing.

The overall customer service

Verified Customer of Allstar Plumbing, 14 of 191

10 Quality
Yes Loyalty
Colette K.

They were thorough, very responsive and very good. It was the city of Palo Alto that was the problem.

Steve was very good and really responsive. I was not feeling great and they did an amazing job quickly. We had been without water for 7 days.

Verified Customer of Allstar Plumbing, 15 of 191

10 Quality
Yes Loyalty
Roger S.

I would say that you don't have to worry about anything. He will take care of all of your problems.

They were on time and it didn't take them long to figure out the problem and complete the job.

Verified Customer of Allstar Plumbing, 16 of 191

10 Quality
Yes Loyalty
Rita

They have good knowledge about plumbing and they show up and fix our problem whenever we call them.

The good customer service, and they are prompt on their time.

Verified Customer of Allstar Plumbing, 17 of 191

10 Quality
Yes Loyalty
Kaitlin A.

They were quick, communicative and gave great suggestions about what kind of toilet we should buy.

They were personable and I appreciated the direct and quick communication.

Verified Customer of Allstar Plumbing, 18 of 191

10 Quality
Yes Loyalty
Frank S.

They were prompt and they did their work really well. They didn't spend any time sitting down.

They were neat and they covered the floor with protection paper. They wore booties over their shoes and they were friendly and courteous. They solved the problem.

Verified Customer of Allstar Plumbing, 19 of 191

10 Quality
Yes Loyalty
Jess L.

The first technician they sent out did a terrible job, but the second guy, Giovanni was great.

He explained everything. There was a leak so he came back and fixed it right away. He was personable and informative.

Verified Customer of Allstar Plumbing, 20 of 191

10 Quality
Yes Loyalty
Josephine O.

The gentlemen I had at the house did their job right like they were supposed to.

They knew what they were doing.

Verified Customer of Allstar Plumbing, 21 of 191

10 Quality
Yes Loyalty
Alex S.

They are very professional, prompt and they cleaned up the mess pretty well.

I didn't have to worry. They just did the job.

Verified Customer of Allstar Plumbing, 22 of 191

10 Quality
Yes Loyalty
Christa W.

If you need someone same day, they can usually show up within an hour or so.

They do good professional work.

Verified Customer of Allstar Plumbing, 23 of 191

10 Quality
Yes Loyalty
Audrey B.

I would tell them to use them because they are really good and they care.

They did my kitchen sink. They fixed it and it looks so nice. It works so well and it is so neat. Also, my dishwasher was leaking and they took care of that at the same time.

Verified Customer of Allstar Plumbing, 24 of 191

10 Quality
Yes Loyalty
Dave M.

I would recommend them. They showed up and figured out what was going on.

They were professional and courteous.

Verified Customer of Allstar Plumbing, 25 of 191

10 Quality
Yes Loyalty
Linda W.

They are hardworking, honest and there when they tell you they will be.

The way they answered all my questions and showed me what they were doing

Verified Customer of Allstar Plumbing, 26 of 191

10 Quality
Yes Loyalty
John R.

Very clean, showed up every time and the quoted price was what it was.

There was a small leak but he had no problem coming back, and he certainly looked at it before he left.

Verified Customer of Allstar Plumbing, 27 of 191

10 Quality
Yes Loyalty
Lettecia R.

They are highly responsive, competent, and they have great expertise.

They arrived when they said they would and did the job they said they would do all in a single visit. I had no troubles afterwards.

Verified Customer of Allstar Plumbing, 28 of 191

10 Quality
Yes Loyalty
Mark K.

They came over, got the work done, and that was that, no problems.

It was simple.

Verified Customer of Allstar Plumbing, 29 of 191

10 Quality
Yes Loyalty
Laurel A.

Jesse was the plumber that did the work. I highly recommend Jesse.

He was polite, cleaned up afterwards, and the work done was excellent.

Verified Customer of Allstar Plumbing, 30 of 191

10 Quality
Yes Loyalty
Louise G.

They are pretty on time and they do what they are supposed to do.

They are easy to talk to.

Verified Customer of Allstar Plumbing, 31 of 191

10 Quality
Yes Loyalty
Lisa W.

I would gladly say to use them. They have done good jobs for us.

I guess their professionalism.

Verified Customer of Allstar Plumbing, 32 of 191

10 Quality
Yes Loyalty
Suzanne G.

I am perfectly happy with them. The guy was pleasant and great.

After having done other sewer work with another company, I was relieved to have someone fix it as it was the day after Christmas.

Verified Customer of Allstar Plumbing, 33 of 191

10 Quality
Yes Loyalty
Savannah R.

They were very professional and they arrived really quickly.

I liked that they got everything done the same day.

Verified Customer of Allstar Plumbing, 34 of 191

10 Quality
Yes Loyalty
Dawn M.

Use them. They actually show up and get the work done right.

They do it right the first time.

Verified Customer of Allstar Plumbing, 35 of 191

10 Quality
Yes Loyalty
Melony R.

They are reasonable, honest, and have good customer service.

They were very knowledgeable.

Verified Customer of Allstar Plumbing, 36 of 191

10 Quality
Yes Loyalty
George L.

It was a fast response. They answered all of the questions.

They didn't take much time and did a good job.

Verified Customer of Allstar Plumbing, 37 of 191

10 Quality
Yes Loyalty
Chris K.

It was very efficient and they did a very good, clean job.

They were prompt.

Verified Customer of Allstar Plumbing, 38 of 191

10 Quality
Yes Loyalty
Jayne S.

That they solved the problem of whatever I had at the time

They have usually have been able to be there when I needed to, when I needed them in an emergency.

Verified Customer of Allstar Plumbing, 39 of 191

10 Quality
Yes Loyalty
Melisa M.

They were on time, on budget, and did and excellent job.

He knew what he was doing.

Verified Customer of Allstar Plumbing, 40 of 191

10 Quality
Yes Loyalty
Bryan P.

I would recommend them. They had good customer service.

The guy who came out had a lot of integrity.

Verified Customer of Allstar Plumbing, 41 of 191

10 Quality
Yes Loyalty
John M.

I guess just that we had a good experience. That's all.

They were really efficient for the most part.

Verified Customer of Allstar Plumbing, 42 of 191

10 Quality
Yes Loyalty
Mimi H.

They were timely, efficient and they did a good job.

The worker was really friendly, personal and very efficient.

Verified Customer of Allstar Plumbing, 43 of 191

10 Quality
Yes Loyalty
Dennis B.

Use them even though they are a bit more expensive.

They are friendly and seem to know what they are doing.

Verified Customer of Allstar Plumbing, 44 of 191

10 Quality
Yes Loyalty
Joseph S.

They were knowledgeable and priced competitively.

They were knowledgeable.

Verified Customer of Allstar Plumbing, 45 of 191

10 Quality
Yes Loyalty
Ceila M.

They were reliable, prompt and they did the job.

Like I said, they were reliable, prompt and they did the job.

Verified Customer of Allstar Plumbing, 46 of 191

10 Quality
Yes Loyalty
Raul G.

They seemed pretty knowledgeable and efficient.

Quick response time

Verified Customer of Allstar Plumbing, 47 of 191

10 Quality
Yes Loyalty
Bill W.

The guy who came out is cool, but shop around.

The guy's personality

Verified Customer of Allstar Plumbing, 48 of 191

10 Quality
Yes Loyalty
Ken K.

I would just recommend them if someone asked.

They did the job efficiently.

Verified Customer of Allstar Plumbing, 49 of 191

10 Quality
Yes Loyalty
David K.

If you need help, they are the ones to call.

The gentleman who came over that day was very kind, nice and positive. He wasn't pressured for time.

Verified Customer of Allstar Plumbing, 50 of 191

10 Quality
Yes Loyalty