New Construction Plumbers in Baltimore, MD

"F. H. Furr did the tasks I requested. Two tasks required the lighting be replaced."

"Saved by Ehrhardt Brothers Quality Plumbing (a.k.a ColumbiaPlumber)! (West of Baltimore) Our gas water-heater failed! It’s 30° outside! (Mar 2026). It was leaking, so we shut off the gas, the pilot, and the water inlet, to lessen damage if it burst. Ehrhardt offered a price based on our descriptions and photos, of course with caveats for anything unexpected. A water-heater costs a pretty-penny, but less than we expected. A fair price. They came the next morning, and had the water heater replaced in 90min. Impressive. But the manufacturer sent a unit with a bad pilot! Ehrhardt returned immediately and in 30min, they figured it out. They had a replacement part over-nighted. The next morning, in 30min, done. Hot water. AAAAAHHH :-) The problem was the manufacturer’s fault, and Ehrhardt handled it flawlessly: Excellent communication by Ehrhardt, priority attention to our problem, no excuses, just fast resolution. Great service staff. Perfect!"

"Efficient and out to me same day."

"The crew came quickly and on time. They draped my stairway and protected my carpets carefully and put coverings on their shoes from the moment they walked in the door. What started as a seemingly simple project became a lengthy one as they realized that the backup originated close to where the house clean out joined the city sewer. Despite the extra hours, there were no add-ons to the original quoted price (which has happened in the past with other plumbers.) They left my bathroom, shower and floors cleaner than when they found them and the clog (a huge nightmare of excrement, roots and whatever) was cleared so my drains now run quickly without backup. I have used their service now for years and have found that Honest Abe lives up to his name every time."

"Dereck was excellent. Did the job quick and was very professional"

"Great service for a reasonable cost. They did the plumbing repair in one day and took care of the drywall repair, including painting. Will hire again. Thanks!"

"Excellent, efficient, and affordable!"

"Inside and outside repairs were handled efficiently and with extra care. House rules followed because of pets. Costs were presented, reviewed and approved prior to repairs. I would rate this project 5 stars"

About us: "Welcome to Mahon Plumbing Inc. We proudly serve the Baltimore/Annapolis region as your local plumber since 1994. We are a full service company offering quality plumbing, gas installation and services for residential, commercial and new construction. We have fully stocked vehicles that are ready to handle even the toughest jobs. License Information/Numbers: A202144, 11839, MP9438, 836 & 70650."