We had two projects and Alan completed both of them. Our upstairs bathroom had a soft floor near the shower which turned out to be due to water damage. However, the source of the water was not clear. One contractor suggested we demo the entire bathroom and remodel it for $35k-$50k. Another suggested that he could spray something to slow the dry rot. Only Alan suggested starting by identifying the source of the leak. After eliminating several possibilities, I made a couple of suggestions which Alan rejected as "too expensive". Finally, he opened the outside wall to expose the plumbing and there found the source of the leak. He made the repair and when the wall was closed up, the stucco repair was flawless. Our downstairs exterior door from the laundry room gets heavy weather during storms. Over the years water had come in and the floor was damaged with dry rot. The original contractor made several attempts to make the door water tight but was unable to do so. A specialist in weather stripping declined the job as impossible. I suggested to Alan that we might need a new door but he rejected that option as "too expensive". With a new threshold, and by making the door close more tightly, he solved the problem at minimum cost. Alan and his workers were very responsive, prompt, and professional. Highest marks. "},"url":"https://www.angi.com/companylist/us/ca/redwood-city/a-b-mour-development-reviews-7486923.htm"},"position":4},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Cabrillo Plumbing","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Cedric C."},"reviewBody":"No leak, works great. "},"url":"https://www.angi.com/companylist/us/ca/san-francisco/cabrillo-plumbing-reviews-206042.htm"},"position":5},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"COCHRAN'S APPLIANCE REPAIR","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Genevieve B."},"reviewBody":"When my refrigerator leaked, I first called the mfgr and they scheduled an appt w/ their national service co. That appt ran beyond the promised time so I cancelled. The repairman arrived that evening at 7:00 pm and did not seem surprised that the appt had been cancelled. Called my local repair co. and was immediately given a convenient service time by Roberta with the advice that if I experienced any problems I should call them and Darrell would squeeze me in as necessary. Darrell arrived earlier than booked and immediately diagnosed the problem and had the necessary materal to complete the repair. An easy, pleasant repair experience, and a chance to get acquainted with my local repair resource. Family owned and operated. "},"url":"https://www.angi.com/companylist/us/ca/sonoma/cochran%27s-appliance-repair-reviews-3926173.htm"},"position":6},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Grant Plumbing","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"ELAINE M."},"reviewBody":"They called in advance to let us know they were running behind schedule. The pipe was causing some leaking into some woodwork and trim so they had to cut away some of the wood to get to the pipe. Once they were able to get to the pipe they had to replace it with a newer pipe to stop the leaking. After installing the new pipe the leaks was gone. We were pleased with their work. Their pricing seemed a little high but they did provide us with an Angie's List discount."},"url":"https://www.angi.com/companylist/us/ca/foster-city/grant-plumbing-reviews-258892.htm"},"position":7},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Safeguard Waterproofing - Ram Jack Illinois","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Stewart S."},"reviewBody":"basement"},"url":"https://www.angi.com/companylist/us/il/franklin-park/safeguard-waterproofing--ram-jack-illinois-reviews-78819.htm"},"position":8},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Mr. Roofing Inc","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Robert M."},"reviewBody":"I contacted Mr. Roofing in response to repairing a leaky roof. Instead of repairing the section of roof that was leaking, they recommended replacing the whole roof. The roofers were punctual and cleaned up after themselves each day, and they completed the job a week later than originally estimated due to manufacturer's delays with the shingles. The roofers performed the job very well, and I would recommend Mr. Roofing to anybody who wants a new roof."},"url":"https://www.angi.com/companylist/us/ca/south-san-francisco/mr-roofing-inc-reviews-336551.htm"},"position":9},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Benicia Plumbing Inc","address":{"@type":"PostalAddress","addressRegion":"CA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Laveille V."},"reviewBody":"This was a rental unit. The first time they came didn't fix the problem. I wasn't on site either. They spoke with the tenant directly. The original repair cost somewhere between $100-200. Don't recall. This visit was under warranty. I showed up and worked with the technician directly. He seem knowledgeable and the repair was fine. It seemed that you need to be there and communicate with technician. I am not sure if there are technician with different level of expertise. I have had other plumbing repair issues, usually complex leaks and it usually takes them at least two visit to diagnose and fix. I am not happy with the multiple visits but I am not sure that other people will necessarily do any better under those circumstance. "},"url":"https://www.angi.com/companylist/us/ca/benicia/benicia-plumbing-inc-reviews-481829.htm"},"position":10}]}
Basement Leak Repair reviews from real Angi homeowners in Sonoma, CA
Last update on October 14, 2025
Elaine G.
5.0
09/2016
I had such a disastrous leak! I even tried to turn off the house water and it still leaked. I'm so glad I could get Dale Plumbing to come out over the weekend. He was very efficient, he knew how to do it and he made it really simple. I would definitely use them again!
I called the company to come out and check a leak. The owner said they were a small company so it would be $350 up front for them to come out and if they are out longer than 4 hours it would be more. That was fine for me and I appreciated that they came out that same day. Two men came out and...
Deanna B.
5.0
10/2013
Alan gets our highest rating for diagnostics, problem solving, and professionalism. His work was methodical, the end result was excellent, and we very much appreciated his considerable efforts to keep the costs down. We will absolutely use his services again and highly recommend him and his...
Cedric C.
5.0
09/2013
No leak, works great.
Genevieve B.
5.0
07/2013
When my refrigerator leaked, I first called the mfgr and they scheduled an appt w/ their national service co. That appt ran beyond the promised time so I cancelled. The repairman arrived that evening at 7:00 pm and did not seem surprised that the appt had been cancelled. Called my...
Elaine M.
5.0
01/2013
They called in advance to let us know they were running behind schedule. The pipe was causing some leaking into some woodwork and trim so they had to cut away some of the wood to get to the pipe. Once they were able to get to the pipe they had to replace it with a newer pipe to stop the...
Stewart S.
2.0
12/2012
basement
Robert M.
5.0
11/2012
I contacted Mr. Roofing in response to repairing a leaky roof. Instead of repairing the section of roof that was leaking, they recommended replacing the whole roof. The roofers were punctual and cleaned up after themselves each day, and they completed the job a week later than originally...
Laveille V.
4.0
11/2012
This was a rental unit. The first time they came didn't fix the problem. I wasn't on site either. They spoke with the tenant directly. The original repair cost somewhere between $100-200. Don't recall. This visit was under warranty. I showed up and worked with the technician directly. ...
Next Generation Builders (N G Builder Company) has decades of experience. We are 3rd generation strong in the industry and are going on our 4th generation. We have experienced many different angles in the industry. With our years of experience, our problem-solving skills are excellent. N G Builder Company aspires to be a community-based business where giving back to the community will be at the forefront of our mission. We are establishing a system of giving back to kids or non-profit organizations. Currently, we integrate kids into the work field and help them build lifelong skills needed in any job. This introduces the importance of working into their culture and understanding responsibility and safety. We hold a California Contractors State License and are bonded and insured. We have a portfolio, and we provide schedules for each job. For more information about our services, contact N G Builder Company today!
"I had a fantastic experience with NGB Construction and I highly recommend their services. From the start, their team has been communicative and reliable, which made the entire process smooth and enjoyable. Every person I interacted with was kind and eager to collaborate on my ideas, which I truly appreciated. NGB Construction was not only courteous but also completed the job with great attention to detail. I am incredibly grateful for the services they provided, as it gave me peace of mind knowing I was in such good hands. Thank you, NGB Construction, for your excellent work!"
Dezaree H on October 2025
Next Generation Builders (N G Builder Company) has decades of experience. We are 3rd generation strong in the industry and are going on our 4th generation. We have experienced many different angles in the industry. With our years of experience, our problem-solving skills are excellent. N G Builder Company aspires to be a community-based business where giving back to the community will be at the forefront of our mission. We are establishing a system of giving back to kids or non-profit organizations. Currently, we integrate kids into the work field and help them build lifelong skills needed in any job. This introduces the importance of working into their culture and understanding responsibility and safety. We hold a California Contractors State License and are bonded and insured. We have a portfolio, and we provide schedules for each job. For more information about our services, contact N G Builder Company today!
"I had a fantastic experience with NGB Construction and I highly recommend their services. From the start, their team has been communicative and reliable, which made the entire process smooth and enjoyable. Every person I interacted with was kind and eager to collaborate on my ideas, which I truly appreciated. NGB Construction was not only courteous but also completed the job with great attention to detail. I am incredibly grateful for the services they provided, as it gave me peace of mind knowing I was in such good hands. Thank you, NGB Construction, for your excellent work!"
America's Dream HomeWorks Is A Family-Owned Full Service Home Improvement Contractor In California Offering Complete Home Remodeling Services. We Help Homeowners And Property Owners With All Of Their Home Improvement Needs. With The Professional Knowledge And Vast Resources, We Are Able To Provide Our Customers With The Best Products, Unmatched Customer Service And Affordable Prices. Secondary Phone: Secondary 916.739.0996
"They didn't do what they said that they're gonna do. The paint job was spotty and it was unfinished cabinet work. I tried to call them to let know and they never even know who I am."
LeslieAnn G on August 2021
America's Dream HomeWorks Is A Family-Owned Full Service Home Improvement Contractor In California Offering Complete Home Remodeling Services. We Help Homeowners And Property Owners With All Of Their Home Improvement Needs. With The Professional Knowledge And Vast Resources, We Are Able To Provide Our Customers With The Best Products, Unmatched Customer Service And Affordable Prices. Secondary Phone: Secondary 916.739.0996
"They didn't do what they said that they're gonna do. The paint job was spotty and it was unfinished cabinet work. I tried to call them to let know and they never even know who I am."
Look no further. Here at Coastal View Builder we specialize in Residential and Commercial Remodeling. additions, decks, doors, windows, and so much more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!
"Really terrific contractor, no stuff and has a great network of subs to get the job done. Friendly, responsive, shows up when he says he’s going to show up, I don’t think you could ask for more from a contractor! Good work, attention to detail, and I’m very happy with the project."
Lorie L on July 2024
Look no further. Here at Coastal View Builder we specialize in Residential and Commercial Remodeling. additions, decks, doors, windows, and so much more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!
"Really terrific contractor, no stuff and has a great network of subs to get the job done. Friendly, responsive, shows up when he says he’s going to show up, I don’t think you could ask for more from a contractor! Good work, attention to detail, and I’m very happy with the project."
Groundworks, formerly Bay Area Underpinning, specializes in helping homeowners with their residential and commercial foundation repair and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across the Sacramento and San Jose areas. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation. Schedule your FREE inspection today! 1116054
"We hired Groundworks CA (fka Bay Area Underpinning) for what we understood was a full foundation repair. We paid $42K. They only worked on the rear and never informed us that the front wasn’t included. Months later, while selling our home, a third-party engineer found $189K in unaddressed issues at the front. We were blindsided, lost our buyer, and suffered major financial and emotional stress. Groundworks later admitted they hadn’t measured the front. Their rushed “final inspection” months later felt reactive, not professional. When asked for a partial refund, they refused. We feel misled and abandoned. Avoid."
Dominick M on June 2025
Groundworks, formerly Bay Area Underpinning, specializes in helping homeowners with their residential and commercial foundation repair and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across the Sacramento and San Jose areas. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation. Schedule your FREE inspection today! 1116054
"We hired Groundworks CA (fka Bay Area Underpinning) for what we understood was a full foundation repair. We paid $42K. They only worked on the rear and never informed us that the front wasn’t included. Months later, while selling our home, a third-party engineer found $189K in unaddressed issues at the front. We were blindsided, lost our buyer, and suffered major financial and emotional stress. Groundworks later admitted they hadn’t measured the front. Their rushed “final inspection” months later felt reactive, not professional. When asked for a partial refund, they refused. We feel misled and abandoned. Avoid."
Groundworks specializes in helping homeowners with their residential and commercial foundation repair and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across the Sacramento area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.
"Juanpablo H. & Alex C. provided excellent service. Their knowledge and transparency gave me all the confidence that they?re the best persons for the job. Transparency is a major trust driver for me, and their ability to have frank and informative discussion earned my loyalty. Thank you both! "
Sam _ on May 2025
Groundworks specializes in helping homeowners with their residential and commercial foundation repair and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across the Sacramento area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.
"Juanpablo H. & Alex C. provided excellent service. Their knowledge and transparency gave me all the confidence that they?re the best persons for the job. Transparency is a major trust driver for me, and their ability to have frank and informative discussion earned my loyalty. Thank you both! "
We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.
"The team was amazing! We had an old deck in our backyard and we hired Palm Construction to replace and extend it and they did a great work! The job was done in less than 2 weeks, Communication was great, they cared about the backyard and plants and we are so happy itâ s all ready just before summer. Highly recommended!!"
Yael H on May 2024
We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.
"The team was amazing! We had an old deck in our backyard and we hired Palm Construction to replace and extend it and they did a great work! The job was done in less than 2 weeks, Communication was great, they cared about the backyard and plants and we are so happy itâ s all ready just before summer. Highly recommended!!"
We are a Construction company that can do remodels and new construction. The company does several kitchens and bathroom remodels each year and reconstruct buildings regularly for our clients changing needs.
We are a Construction company that can do remodels and new construction. The company does several kitchens and bathroom remodels each year and reconstruct buildings regularly for our clients changing needs.
Welcome to C. Watkins Construction, your premier partner in bringing new life to your home. Specializing in comprehensive remodeling services, we are dedicated to turning your vision into reality. Whether you're looking to update your kitchen, transform your bathroom, or undertake a full home renovation, our team has the expertise and passion to deliver exceptional results.
Welcome to C. Watkins Construction, your premier partner in bringing new life to your home. Specializing in comprehensive remodeling services, we are dedicated to turning your vision into reality. Whether you're looking to update your kitchen, transform your bathroom, or undertake a full home renovation, our team has the expertise and passion to deliver exceptional results.
-Have been in business for 5+ years. -Care about delivering quality every time as that is what keeps ua in business. -No job is to big or to small and will treat all jobs with same importance no matter what the size. -Specialize in interior renovations and new construction/ Residential and commercial. -Will save you your building head aches. So you just get to enjoy the results of the work.
-Have been in business for 5+ years. -Care about delivering quality every time as that is what keeps ua in business. -No job is to big or to small and will treat all jobs with same importance no matter what the size. -Specialize in interior renovations and new construction/ Residential and commercial. -Will save you your building head aches. So you just get to enjoy the results of the work.
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FAQs for basement leak repair projects in Sonoma, CA
The cost to finish a basement is $18,400 for the average homeowner. However, this cost could be as little as $2,800 or as much as $34,500, depending on the basement size and the materials needed. If your basement is already outfitted with electrical and plumbing, expect the cost to fall on the lower end.
For example, the drywall cost for this project averages around $1,750, but other features, like hiring a plumber, cost between $45 and $200 per hour.
The cost to remodel a basement is between $12,100 and $33,400 for the average homeowner. The price you pay can be as little as $3,500 or as much as $50,200, depending on the size and condition of your basement and the type of remodel you're doing.
If you're doing a simple project like adding a home office to your basement, you can expect to pay anywhere from $500 to $3,000. However, if you're adding a bathroom, which is an extensive project, you can expect to pay between $6,600 to $16,500.
Damp proofing and waterproofing are both methods to help keep your basement dry. Damp proofing keeps soil moisture from entering your basement, which is helpful since your basement is underground. Waterproofing, however, keeps both soil moisture and liquid water out of the basement, which is essential, especially if you live in a wet environment. Because it’s more protective, waterproofing typically costs more than damp proofing.
Although homeowners often use the terms basement remodeling and basement finishing interchangeably, they are quite different terms.
Finishing a basement is the process of taking a basement space that is not habitable and adding elements to make it usable. This includes adding plumbing, flooring, and insulation.
Remodeling a basement means taking an already existing finished basement and changing it, often by adding or removing walls, adding plumbing, or changing the existing flooring.
The cost of basement waterproofing is $4,950 for the average homeowner. However, you could end up paying between $600 and $14,000, depending on factors like basement size, waterproofing method, and the region you live in.
If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between $2,500and $5,000 to waterproof, but that price rises significantly for a larger basement.
The Sonoma, CA homeowners’ guide to basement leak repair services
From average costs to expert advice, get all the answers you need to get your job done.
Sump pump replacement costs depend on the type of unit you have and the cost of labor, which varies by region. Read on to find out more about what to expect.
When it comes to creating a downstairs oasis, knowing who to hire to finish your basement is key. Here's how to find the best professional for the job.
Foundation draining issues can cause a lot of problems for your house Learn how to spot these drainage problems so you can figure out how best to repair them.