Get matched with top excavation pros in Saint Helena, CA

"Humberto is a very creative problem solver! Personable and definitely interested in customer satisfaction, so spends time understanding the full scope of the problem. The problem was the subterranean north wall of the sanctuary of First Presbyterian Church in Vallejo that was far from being waterproof, especially with the rains last winter. Castaneda dug out the soil next to the wall, pressure washed it and applied two coats of DryLok and then a layer of Henryâ s waterproofing. Then Humberto installed a French drain and then a big pipe to route the water off of five downspouts. To get the correct drainage slope, more excavating needed to be done than anticipated. Removed five landscaped trees and lots of concrete that was in the way of the drains which were to be routed under city sidewalks."

"I am incredibly pleased with this company. The entire crew were 100% professional. The owner of the company took time to answer my homeowner questions as they came up. He was very patient and thorough. All the men on the job worked incredibly hard and stayed on task throughout the project. They installed the French drain, installed a washout and removed an old deck all in a weekend. I would most certainly recommend them."

"I cannot say enough about how good this experience with John Mountain/Mountain Engineering has been. They said it would be 3 weeks; anti was. The work was painstakingly done, including a French drain behind the wall. And they replaced the plants that were destroyed during the process, which was an unexpected bonus."

"Rafael did an excellent job repairing my fence. I will highly recommend him for any project based on how he completed this one so thoroughly. Thank you again for a job well done. It was a pleasure meeting you."

"They did an amazing job, and I would hire them again for sure."

"I couldn't be happier with the concrete work that was done in my backyard. From start to finish, the team was quick, professional, and incredibly efficient. They showed up on time, communicated clearly throughout the process, and completed the project faster than I expected without sacrificing quality. What impressed me most was how they went above and beyond to make sure everything was done right. They paid attention to the details, kept the work area clean, and made sure I was completely satisfied with the final result. The finished concrete looks fantastic and has completely transformed my backyard. I highly recommend this company to anyone looking for reliable, high-quality concrete work. Excellent service, great workmanship, and a team that truly cares about their customers!"

"I hired Juan to redo my front yard. He removed the old lawn, updated the irrigation, and designed the new landscape. He did an amazing job and I am extremely happy with the finished project. He was on time and always communicated any changes. Juan and his team where friendly and professional throughout the entire project."

"Edgar and his employees were amazing. Their bid was the best. Other guys said they would have to rip up pavement that this crew could do no problem minimally. The guys were so well groomed and polite. Not that that matters but it was an extra bonus. Lovely crew and incredible job in a few days. I will for sure use them again."

Demar Inc. proudly serves its customers with pride, integrity, and attention to the details that matter most to you. This is one of the many things, that set us apart from the rest. We are locally owned and operated. Give us a call today!

"Julian and crew are fantastic and are perfectionists. They do the job right and more which is rare. I had them install a colored cement pad and a 12 x 14 gazebo on the pad. .All was done to perfection. Normally I am nervous when I have contract work done however this company made me so relaxed. They delivered better than high quality work as well as total communication. I am so happy to have found this company and will use them for future projects."