Construction Company reviews in Portland, Oregon

What a great group. They were a refreshing breath of air for most of the contractors I have dealt with in Portland. On time, on budget and quality was excellent; even following up.

Our realtor recommended Ubaldo and Sierra Excavation for the sewer line we needed to replace on the 111 year old home we were buying. They were SO easy to work with. Ubaldo is extremely responsive and the guys that came to do the work were really nice, did an amazing job in only a day, and left the front yard in great shape considering they had to dig so much up. I hope we never need help with a sewer line in the future, but I know who to call if we do! My realtor was super impressed with the price, too, and said it was cheapest sewer replacement she had ever seen. I know price is surely determined by the circumstances of where the sewer line is, but the fact that even our realtor was impressed with the price says a lot!

These guys were so friendly, responsive and quick. They took care of everything and the price was definitely fair for the work they performed (decommissioned 2 cesspools and made new city sewer line connection). Would recommend them to anyone needing similar work in Portland

Ubaldo was super responsive, came in with a strong bid, and with the option to hand dig, which simplified the project a lot. His team was punctual, worked extremely hard, and even brought a third person to finish the work quickly. The sewer line repair was top notch.

A great price. Good communication. Respectfully and quickly addresses any concerns. Respectful employees and work done in a timely fashion. I'd hire again.

Great team, reasonable price!! They replaced our sewer line very quickly and it passed the inspection! Thank you for all your help :)

Ubaldo & team were very responsive and helpful. They responded to my call over the weekend and dropped by for a consultation on President's Day (holiday for some). Ubaldo provided some options to fix the problem and his crew came by the next day to make the repair. Everyone was great to work with; I would recommend working with them.

Sierra came to the rescue in time to disconnect me from my neighbor's sewer and install a new line to the main sewer which was 12' deep. Timeliness was very important given my house sale was pending and City of Portland no longer allows "party" sewers. Ubaldo Sierra, the owner, was conscientious and his employees did an awesome job. They arrived timely and took great care to make the least minimal impact to the yard and plants with the digging. . I was very nervous about getting the job done right the first time and without any problems. Sierra exceeded my expectations and I highly recommend them.

The entire team was great to work with from the owner to admin to the work crew. All around professional outfit -and im thrilled to have gotten the aging sewer connection updated with minimal fuss.

I have engaged Ubaldo and his crew on several jobs over the past few years, and in every case I have been exceptionally happy with the results. The work gets done on time, on budget, and his crew cleans up thoroughly.

Ideally you never need to deal with your sewer line but when you do, I’d call these guys at Sierra excavation. They handled it quickly and explained the entire process. My sewer line was reconnected with the new pipe the same day they started and the hole in my driveway was also fixed. Everyone I dealt with within the company was friendly and professional.

I feel this short review will not do justice so I'll say this up front: Sierra sets the bar high for any contractors who may follow.

We had several water mitigation issues to sort out and while we had another company here to look them over and provide estimates, it was determined also that our main sewer line was blocked by roots and would require remediation. We got that first estimate to fix the sewer line, repair and reroute a bellied rain drain, and install a new rain drain. It was a hefty sum that we almost agreed to move forward with but then recalled we had worked with Sierra 11 years earlier to have a house connected to the city sewer lines before it could be sold. I remembered a very positive experience with Ubaldo and his team then, so I called for a second opinion and I'm so grateful that I did.

Not only was the bid *significantly* lower (57% less), but the work plan was less intrusive and included more creative solutions to handle our water problems. It was a challenging job on a cul-de-sac in an older neighborhood, with densely packed driveways and complexly placed utility lines. They came with the amazing horizontal boring machine to handle creation of new rain drain lines, which vastly reduced the amount of concrete removal and replacement. Where they had to cut concrete, they replaced it with skill and consideration for our home's environment. Where they had to dig a trench (new rain drain) through our front yard, they put everything back in place like they had never been there.

I wish that I had taken photos which would have demonstrated how Sierra's amazing team, led by the friendly and informative Diego, not only put our property right back to where it started, but left it in better shape than it was (eg, installed conduit for the internet provider to use to rerun fiber, removed moss build up on our driveway). The project has been done for only 9 days, but we have already referred others to Sierra, including other contractors, and have no doubts that we will use their services again, should a need arise that would even remotely be serviceable by them. Thank you, Sierra, for the work you did for us, for the peace of mind we have knowing that we have our water and sewer concerns remediated, and for restoring our faith in good contractors.

I'm so happy we hired Sierra Excavation & Construction! Ubaldo and his brother are both very experienced at their work. We hired them to install a new sewer line and decommission a cesspool for a house we purchased. They were able to coordinate with the city to use their hole from work done just past the curb line. They are punctual, responsive, and tidy for doing such an expansive job. Our cesspool was 16' deep and took two gravel truck loads to fill! Decently priced too, they were the middle bid. Would highly recommend hiring this company.

Sierra Excavation & Construction has done two plumbing related jobs for us. One to replace a sewer line running under our basement floor to the sewer line outside of the house. (All amazingly done without digging up the yard outside of the house or the wall of the basement!) The second was to replace the cleanout and pipe from under our kitchen sink that again ran under the basement floor. Our house was built in 1941 and all of the old cast iron pipes have given way, creating major blockages. Sierra diagnosed the problems quickly, provided reasonable bids for our jobs and completed the work very quickly. They understood we were in situations both times that required us to not use our water or sewer pipes. Their employees are very thorough, hard working, and knowledgable. In addition, they were all a pleasure to work with. I highly recommend them for any plumbing and excavation services!

The whole Sierra Excavation team is awesome! I had to get a new sewer line and new connection to the city line. Mr. Sierra walked me through all of the steps, gave me a fair estimate, and worked directly with the city on permits and the inspections. After the city approved the work proposal, it only took todays to complete this entire project, and I was only without water for an hour. I highly recommend them!

I am very happy with the service from Sierra Excavation. Sierra had replaced our sewer line and our water intake line. Everything went quickly, passed inspection and we were up and running the next day. They were affordable, friendly, easy to work with and professional! I would recommend them to anyone and use them again, if needed.

This was the best contractor of any kind that I've ever done business with. Their bid was the lowest but the quality provided was top of the line. The owner and all of the employees were very friendly and down to earth, and explained every question that we had. They were so good at what they do that someone on our block hired them too. I can't recommend them highly enough!

I had an ADU built in my son's backyard so I could be closer to family and my grandson. They worked with me every step of the way from design, to permitting and building.The result is an ADU that fits my space and needs. I love my ADU! I am so happy with the results. It's perfect and I loved working with Derrick on my project. And after the project was finished and a minor problem came up, Derrick was right back here and took care of it immediately. I highly recommend them for any project you have.

Great people, greater service. Couldn’t be happier!

One of the most reliable and dedicated companies I’ve worked with

This is a phenomenal team. Excellent communication and follow through. Very organized and attentive.