Residential & Commercial
Licensed & Bonded
Family Owned & Operated
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Full House Remodels and Re-pipes.
All plumbing repairs. All fixture installations. toilets, sinks, garbage disposals, showers, tubs, ADA compliant when needed. Whole house water filtration systems. All leak repairs. Water heater installations. Tankless water heater installations, maintenance, and descaling. Rooter. Trouble Shooting. Diagn
Full House Remodels and Re-pipes.
All plumbing repairs. All fixture installations. toilets, sinks, garbage disposals, showers, tubs, ADA compliant when needed. Whole house water filtration systems. All leak repairs. Water heater installations. Tankless water heater installations, maintenance, and descaling. Rooter. Trouble Shooting. Diagnosis. Outdoor kitchens, fire pits, BBQ's, fireplace installation. Sewer lines and mains. Camera inspections. Home Inspections.
Everything done right and done to code.
Over 35 years of experience. We know how to do the job right. There is no commission here; we don't up-sell. Ever.
Newbury Park, California
Monday-Friday: 8am - 6pm
Saturday: By appointment only.
Sunday: By appointment only.
Mark Dowis is the best plumber we’ve ever had. He genuinely cares about his customers and is a wonderful person, a capable problem solver and has 35 years of experience. He is incredibly responsive and reliable. If he can’t come out right away, he’ll try to help over the phone.
We recently remodeled our kitchen and the kitchen contractor’s so-called plumber botched up the dishwasher installation and left us with leaks under the sink. Mark came to the rescue and quickly figured out what was wrong and fixed everything.
Mark is a reasonably priced plumber who you will get to know and love as we have. Don’t hesitate to call when you need a plumber Nancy A
5 Stars - " You judge skilled workers on the completion of their work. Mark Dowis was highly recommend to us and he exceeded our expectations. Mr. Dowis did exactly what he said he was going to do. Was always on time, very well organized and was extremely clean in his work method. We were very comfortable with Mark in our home. His problem solving skills were impressive and his plumbing skills exact. Without hesitation we recommend Mark Dowis 100 percent." Ken R
5 Stars - "My usual plumber was not available when I noticed that my water heater was leaking, so I called my Heating and Air Conditioning man for a referral. He referred Mark and told me that Mark is the only plumber he would let into his own house. I was told that Mark was honest, reliable and always did the job the right way the first time. Perfect! Just what I needed. Mark came out 2 hours after I called him and stayed until 8:00 pm that evening. He had me pay the plumbing supply directly so that I only paid the wholesale discounted price (no mark-up), and then charged me an hourly fee to install. He ended up staying later than his original estimated time but did not charge me more for the extra time. In fact, he returned the next day to install another part and again did not charge me. Mark was fantastic! I can not recommend him highly enough. TEN STARS!!!!!!"
"Mark Dowis for the win. If you want it done right, with attention to detail, with quality parts – this is your GO TO. Job site cleanliness, flooring & property protection are established from the get go and finalized with a thorough cleaning following job completion. We feel fortunate to have found such a solid contractor." Richard L
10 out of 5 stars. Mark did a superb job for us, was super-efficient and gave me free instruction on how to fix toilets and what to look for. As a former Seabee, he knows how to do anything! Friendly and very personable. Highest recommendation. Harry S.
We're a small company that had a large sewage emergency; all three commodes would not flush!! We found Mark Dowis Plumbing and many others from a quick "plumbers near me" google search. Mark actually answered his phone and was able to squeeze us in despite other service calls on his schedule for THAT day; all other companies that we called couldn't get to us until the next day at the earliest, which is understandable, but Mark just did it!! He arrived at our facility within 30 minutes and had us flushing in just under an hour. He was honest, had very reasonable rates (especially compared to the others that we called), a good guy who got the job done!! He is also a Navy veteran, which is a HUGE plus to me!! Thank you, Mark, for a job well done. Dan C
" Mark Dowis is terrific! He replaced all of our kitchen sink faucet combo including new lines which had corroded leading to our hot spot outside. Very friendly, precise, and professional. His right-hand gal wife Debra handles the phone work and appointments with spot-on diligence." Marion R
" Found our forever plumber. Mark is honest and works hard to make sure the job gets done safely and the right way. We had a water heater replaced that turned out to have rotted the drywall beneath. He went above and beyond to make sure our family was safe. Thanks Mark." Bryan F
"Mark has helped us with a bunch of plumbing issues- all during the holidays when tradesmen are hard to come by. I am so thankful that we finally have a good plumber to call when the need arises. His prices are fair and he stands by his work. Mark and his wife are genuinely nice people and I'm happy to give them our business." Jen M
" Mark Dowis 805-573-5773. He just helped us and we would use him again. Was on time, efficient and focused." Linda P
" Great local plumber. Timely, friendly,reliably and knows his trade. If you need a plumber please consider Mark. " Allen D
" My kitchen sink decide to back up, of course at the end of the day. Haven't had to call a plumber in years, so I wasn't sure who to call. Decide to use this site, figured my neighbors would be a good source, I am so glad I did. Found Mark Dowis Plumbing 805-573-5773. Called to set a time, he was at job but said he would come over right after. I was so impressed with his willingness to get here right away but thought I could manage until morning. I went ahead and set a time. his wife Debra followed up with a courtesy appointment confirmation (great customer service). Mark arrived the next morning on time and presented a professional and friendly demeanor. He got to work and tackled the job. got it done within the hour. Yeah! Everything was cleaned up and ready to go. Wow! So glad I read the reviews. Everyone had great things to say about Mark Dowis Plumbling and they were all true. Amazing local company. A husband and wife team that work together to bring the best quality and friendly service. If you ever need a plumber, I recommend Mark" Hannah V
" Our water heater sprung a leak late Sunday night so I called Mark (recommended by many people on Next Door!) Monday morning and was able to come by the same day, gave me a very reasonable estimate and had a new water heater installed within a few hours. He cleaned up and dried out the area with a wet vac before leaving as well. Extremely happy with his work and will use him for all future plumbing fiascos!" Lily G
Thanks for recommending this guy!!! I felt like I was being hustled by my first bid so I brought this guy in and from the minute he set foot on my property I knew I made the right decision. He worked tirelessly until the job was done for a fraction of the cost and then cleaned up meticulously. Very impressed . Marion W.
Mark did a great job installing our water heater up to code.He was prompt and reliable and had a great personality to boot. He's the man you want to call to do the job.
If you need a Plumber, call Mark Dowis! Fixed our gas fire pit, knowledgeable and a great guy. Deborah, was not sure if Mark, would be able to get to us that day- she kept me updated. He was able to get to us the same day👍🏻 Great customer service! Really appreciate Deborah, and her follow-up...felt like I was talking with a dear friend.
Mark Dowis just did ours a couple weeks ago. Called him late Friday afternoon and he stayed late to get it done that day. Highly recommend him. Jeff M.