From Bruce Bonine: AIA & ACHAAs

As an architect and contractor with more than 45 years of experience, I’ve worked with many sub-contractors and I can be very demanding. When I employ sub-contractors, I look for 5 key qualifications: o Fair price o Responsiveness – quick to respond to unusual construction needs o Timeliness – adheres to the construction schedule. o Collaborative — ability to provide creative input and solve unusual construction problems o Quality Outcomes – the end product exceeds expectations Covington Plumbing provides all of these qualities. John has worked with me for more than 8 years on a wide variety of plumbing projects, including 3 major remodels and one new house. John has never disappointed me. He always responds quickly; his work is always on time; he is a great problem solver; the end result is always of the highest quality for a very fair price.

Kim Rosman - Seattle


I have used Covington Plumbing for many years for repairs and both major and minor remodeling in two houses. I feel confident that the work is being done right because John Dennison’s standards are so high. Even other trades people have commented at the excellence of his work. Although some homeowners refuse to share the names of their best contractors, I know how important it is to get a referral to a company you can trust to do the job right. Covington Plumbing is that company and I highly recommend it.

Ross Gooding Bellevue WA


John did high-quality work at a fair price, in helping us with both a bathroom and kitchen remodel. As I managed both projects, I relied heavily on John’s expertise, which was invaluable in both design and execution of each. Furthermore, his advice on fixtures, faucets, etc, was very helpful given the plethora of choices. I am happy to refer John to all my friends. Thanks John!

Charlene Curtiss & Dick Roth Home Owners


We spent 10 years building and remodeling our home and for all of our plumbing work, we hired Covington Plumbing. This included re-piping of the entire house using copper lines; adding a “circ” line and related plumbing, restacking of basement piping to the sewer and replacing it with ABS plastic, 2 full bathrooms, a kitchen and kitchenette, outdoor faucets and watering systems, re-laying lines for storm and kitchen drainage water and connecting it to the city sewer lines 12 feet below grade. John Dennison, the owner of Covington Plumbing, is an honest and considerate man and would never take advantage of a customer in an emergency situation just because he could. We would never use anyone else when it comes to our plumbing needs both for maintenance as well as remodeling.

Jim Taherzadeh, Mercer Island, WA


Hi John, Thanks very much for providing plumbing service to my family. You are honest, even though it could take less work, work efficient, work at anytime to get the problem resolved, professional. Replacing the galvanized pipes, replacing the pressure reducer, diagnosing the leakage in basement and providing resolution for it, replacing leaky pipes in bathroom, recommending toilet manufacturer, and replacing it has all working perfectly. Thank you for your great service.

John and Anna


John was professional and thorough, shimmying into the crawl space under our house to update our 1950′s plumbing. He was honest and straight-forward with us, explaining the work he had done at the end of each day. That was over a year ago and not one problem since. If we need work done again, we would call him first and definitely recommend his services!

Jackie Specht


We recently had occasion to use the services of Covington Plumbing during a bathroom remodel. John Dennison was an excellent plumber. He came in on a Saturday(unheard of) just to make sure that we would have a bathroom with running water. John is methodical and careful in his work and takes the time to make sure that everything is in fine working order. Our bathroom looks beautiful as a result and I am spending entirely too much time in the new Jacuzzi tub!!!!

Nancy Price William Collier Design Business Manager


John, of Covington Plumbing, visited our salon today to look over several issues we are having with our plumbing. We were very pleased with his work and would definitely recommend him to others needing any type of plumbing service.

Steve Dougherty Seattle, Wa


John did the plumbing for our bathroom remodel in 2012. We moved our only bathroom 15 feet in order to have a larger space. With John’s masterful work and willingness to be flexible with his schedule, we were not without a shower or toilet for even one day of the project John’s attention to the smallest detail was matched by his ability to listen to what we wanted and needed in our new bathroom. John was communicative and available at every step, from drainage and venting, to fixtures and hardware. My wife and I bring up John and how happy we are with our bathroom at least once a week. It is not an understatement to say that we are very lucky to have been able to work with John. We look forward to working with Covington Plumbing in the very near future. I highly recommend Covington Plumbing and have already done so to several friends and family members.