"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."

"Demolition, of our shed was completed without wrecking our landscaping or fence to gain access.  Campbell Services is extremely careful and has the perfect science and engineering when it comes to safety and efficiently tearing down buildings and other artificial structures. Because of the way the Demolition was performed the deconstruction of the shed/building carefully preserved valuable elements surrounding our house made it easy for us to repurpose the area and upgrade our backyard. We now are enjoying and indoor/outdoor living space."

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

"They made our property looking amazing now! We are very pleased!"

"We bought a 'fixer-upper' and of all the contractors (and we have worked with A LOT on this house) he is the top. He is prompt, he always follows through, his team works hard and gets the job done fast and well. If there are any concerns he comes out personally and takes care of them immediately. He is flexible and thinks on his feet. His pricing is very reasonable. There wasn't a thing that we didn't like about working with Nato and team. He is our official go to guy for landscaping and other projects. We trust Nato, his work and recommendations to us We would definitely recommend him to our friends. My husband found him on Angie's list and it was one of the best finds we have had in the 3 years we owned the house."

"Excellent. Flawless. Finished the project on time . Very pleasant to work with. Efficient crew . Program manager handled all the permits and logistics of of construction in a very difficult area on the Berkeley Hills. We have had many repair and new construction projects done on my two houses in the Berkeley hills. This project was handled more professionally than any other in the past. Thank you."

"When we purchased the house, it was a 30 year old home. Almost everybody in the period of five years to seven years wanted to convert to copper plumbing. So what they offered at that time was anyone you referred to if they chose to use their service, you have $500 cash payment which was really nice because half of our neighbors and our family members used them. I do not know what they do now, but it is a really nice service because they are a very good company. They did a great job."

"Went well.  They were prompt, efficient and courteous.
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"Paul Stanley is my hands down person to go to for any concrete or asphalt work! He has such a wonderful team and fulfilled what needed to be done above and beyond. Got the job done in a very nice timely matter. Was very clean with his work, also moved things for me that I couldn’t move. 5/5"