The flight of wooden steps leading to the front door of my Victorian house had been incorrectly rebuilt by a previous contractor, leaving pools of water at the back of all the treads whenever it rained. I hired Mike O'Donnell to create the proper slope on the stair treads with a polymer-cement coating to drain water and he did a very nice job with this, leaving me with stairs that not only drain correctly but are also waterproof, non-slip, and good-looking. Mike patiently worked around rainy weather and was unfailingly knowledgeable, patient, and polite. I would hire him again without hesitation for any such work. read more

Mike was great. I called him due to improper installation of a foundation retaining wall from a concrete contractor and Mike knew exactly what to do. He was fast, knowledgeable and friendly. The wall was leaking bad and it rained at the end of his work and no water came in after. He saved my project from big delays. read more

Mike is extremely friendly and a perfectionist. We hired him to waterproof our concrete patio and steps. He gave very a very detailed quote, covering each phase of the project and materials to be used. The price he gave was also extremely competitive. Even though there were a few delays due to the weather, Mike made sure everything was done perfectly and would even re-do a layer of coating that was ruined by the rain. Highly recommend! read more

Mike is an expert and generous tradesman. Not only did he help assess a number of water issues at our home; not only did he make durable repairs; but he took the time to teach me techniques to make further repairs myself. -- On top of all this, we spent less than 10% of what a plumbing contractor had quoted to address the same problems. read more

The New Years' Eve storm revealed a previously-unknown crack in our foundation that was letting water into our ground-level bedroom during heavy rains. Mike came over on short notice, patched it up with epoxy, and we were able to stay dry through the remaining weeks of the wet weather. read more

I work with a lot of contractors and Mike is at the very top. First and foremost, he is a  craftsman that looks after every detail to make sure the job is done right. Besides his high quality work, Mike is a total professional. He communicates clearly, thoroughly discusses your options,  shows up as promised, and delivers a great product. I highly recommend Mike. read more

Cal Coast Waterproofing - Beautiful resin coating that is 100% waterproof and will last 25+ years with no maintenance. Looks great too! - Waterproofing Near Me - San Francisco, California

Mike O'Donnell is extremely throrough, knolwedgeable, responsive, kind and helpful. Professional too. And he has so much experience. We had major flooding on the ground floor of our house during the January 2023 storms in Northern California. He was able to quickly analyze the problem and outline a step-wise approach to fixing it. He responded to all my questions and explained everything that need to be done clearly. An amazing resource. We'll definitely call him anytime we need help with waterproofing or repairs from water damage, although thanks to him, we're well protected. read more

Mike is very responsive and a perfectionist at diagnosing and addressing waterproofing issues. Good person with a strong work ethic.

Can't say enough about how thorough, responsive, respectful and helpful Mike has been in my dealing with him. If you need waterproofing done this is the place to start. Thanks Mike! read more

We moved into our house recently and noticed a leak at the corner of the garage every time it rained. It was obviously bad after that new year eve storm. We are glad to have found Mike and he came out to check it out on that very day when it was pouring down hard. He worked diligently on fixing the problem and improving the drainage to divert water away. We are very happy with the result and have not noticed any leak since the work. We would not hesitate to call Mike again for similar issues. read more

Such a nice guy! Down to earth, no jargon. Came out and gave great advice for no charge. For sure call him!

I'd put over 5 stars if I could. Mike is an expert in his craft(s). He recently helped my wife and I address a major flooding issue in our garage. He is thorough, hard working, and will not stop until the job is done right and to satisfaction. His knowledge and experience with San Francisco homes allowed him to easily understand the root cause of our problem. I'd highly recommend Mike for your waterproofing needs, and personally, I will be calling him back for additional jobs in the future. read more

I've struggled with a water issue in a downstairs closet for years. Mike was super knowledgeable of the issue and what would need to be done. He was very reasonable on the budget to get the job done. He remained very communicative throughout the job, making time to walk through the progress at each step. I'm pleased with how it turned out and feeling confident his work will be a permanent solution. Thanks! read more

Mike did a good job at my place some 15 years ago so it was nice to do business again. He kept me current with his schedule via txt and completed the job on time despite rainy days. read more

I hate to write a negative review of anyone. Unfortunately, I have to say I am very disappointed that these people are poor communicators. I have left at least 4 polite messages and they simply won't return the call. Maybe they are very busy, maybe they are out of business, but without a return call I am not sure which. I am moving on to other waterproofing companies who have the integrity and consideration to communicate with clients. Here's hoping they can work things out. read more

Several weeks ago, I noticed that water was somehow coming into my downstairs bedroom. Having lived here for 17 years, this was a new one for me. To prevent mode, I actually had to have a team come and dry the room, carpet and floor out, which included running large fans for several days. After that, I had several plumbers over to determine where the water was coming from. The American Leak specialists determined that I did "not" have a leaking pipe. However, we did find a puddle of water resting on the opposite side of the interior wall...just outside. I was told to hire a water-proofer. This is where it got tricky. Although there are several water-proofing companies out there, they mostly specialize in commercial properties and everyone said that my project was too small. That is - everyone except for "CAL COAST WATERPROOFING". Honestly, I didn't know what I was going to do, but Mike came to our rescue. Not only is Mike experienced and capable, he is kind and very through in is work product. He had me send him pic's to get a better idea of what was going on, and we simply scheduled an appointment. Once at my property, I found him to be very personable, and caring....he wanted to resolve this matter for me and my family. And, that is exactly what the did! Mike devised a plan, made the necessary corrections, and he also determined why (after 17 years) water was coming inside. Basically, it appeared that the house had shifted. That simple. After waterproofing the interior, Mike also created a way for the water to be re-directed to the appropriate drain outside and not just locate in the wrong spot. It's been several weeks now - and there is no water indoors or lingering outdoors. Mike connected with me several times during this process to ensure that the repair was thorough and complete. Mike is our hero and after several good rain storms without issues, I now feel comfortable enough to repair the downstairs bedroom wall and carpet! Thanks Mike, you took a very serious matter and made it look like a very easy repair! If I could give Cal Coast Waterproofing 10 Stars, that would be my rating! read more

Mike is meticulous in his process and does a superb job. He's like the leak whisperer, somehow can understand where they originate, and if he can't figure it out, he goes step by step until the leak is found. We had him waterproof our inner courtyard, it leaked for decades, it was the second time we've had it done (first time by another guy), and it's fixed, we no longer have a river pouring in to our garage when it rains, thanks to Mike! I've had 8 men look for those leaks over the years, all claiming it was this or that, blah, blah, blah, egos flying everywhere. All I can say is that I highly recommend Cal Coast Waterproofing. Just realize he only does the waterproofing, you'll need a contractor or handymen to remove existing materials and haul them away. He also fixed the bathroom light well leaks after decades!! It's time to head up to the roof now... God, I love when it rains. read more

Mike O'Donnell did a waterproofing job for us on March 2010, and it worked out fine. We have the same problem leak again, and he came over to look at it. It looks like it may take a while to manifest itself again.in the rain, but he said to call immediately and he'd come by. I had another leak and he's recommended we find an exterior guy to fix it. So far so good. read more

Mike is outstanding in problem solving and implementing the best solution. Dealing with him is smooth and seamless. He is a very caring person and I totally recommend him! He's a gem! read more