"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."

"With our rather old cabin-style home, the plumbing from the kitchen sink had a plug of hardened grease over 30 years old. We discovered this the first day when they drilled through it with a snake; we had them return a couple of days later with a hydrojet unit to clean it out. Our house is located in the mountains, and may not be particularly easy to get the equipment out here, but they had very little difficulty. They used a lengthy hose to go around the back of the house, then sent the nozzle through the pipe behind the trap to clear it out. I was originally concerned about navigating past the elbow joints in the pipe, and the fact that we have a septic tank that I didn't want to fill up; but neither was a problem, and the job was done in about an hour. The sound of the drain flowing never sounded so sweet."

"Best job I have has done. Very knowledgeable About trees"

"CJR is all about quality, they treat you like a real customer. The team is extremely professional, they clean the site daily before leaving for the day. You and your neighbors will not even notice its a site under construction. The quality of work is far and beyond your expectations. I will continue to use CJR for upcoming projects and referrals to all my friends and family."

"Gio and the entire Ultra Construction Group team are amazing. They showed up on time and were incredibly organized and their attention to detail made the project even better then I imagined. I would highly recommend this company for any concrete project big or small."

Here at Raya Engineering, we sustain our company on the principal that our customers come first. We offer services that are tailored to your needs and we're ready to show you what our experience can bring to your project! Call us today!

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability, is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business

"The job went great I highly recommend them All of their Employees Are very nice and hard workers no slackers Kept our property clean when they left every day They even laid big tarps underneath their trucks to keep the streets clean Marco would come by every day to check on things Louis the man that laid the pavers He did a great job He didn’t just throw down any paver he made sure the shapes and colors were just right like an artist he takes pride in his work We are very happy with our new backyard would highly recommend them."

"He was available by phone, and was flexible in scheduling meetings which is great. He was professional, and seemed quite knowledgable. In the end, I didn't use Nato's services because his quote was twice as much as the other contractor I was considering. Perhaps his prices may be more competitive in other services he offers. Either way, working with this company was a pleasant experience."

"Excellently and professionally. Definitely would recommend and use again. He even cleaned up!!;)"