Independently Rated Highest in Quality
F o u r t h
Consecutive Year
Originally Earned:
October 2013
We declare that Devengenzo Landscaping & General Engineering Inc. HAS QUALIFIED for and continues to meet the Ongoing Research and Rating Requirements for Diamond Certified® status.
Certificate #2069
(925) 405-6912

Robert Devengenzo, President

Devengenzo Landscaping & General Engineering Inc. provides a complete range of construction, engineering, and landscaping services for residential and commercial clients in Contra Costa, Solano and Alameda Counties. The company is well-known for its expertise in surface and subsurface drainage, but it also has the in-house capabilities to install automated irrigation systems, repair damage caused by landslides, work on sewer systems, renovate kitchens and bathrooms, and much more.

President Robert Devengenzo says Devengenzo Landscaping & General Engineering’s small size and hands-on business approach have allowed it to develop and maintain a loyal clientele base. “We’ve been in business a long time, but we still hand-manage everything and give each client our full attention. Our customers know we’re going to be there throughout every step of their projects, and they really appreciate that.”

Devengenzo Landscaping & General Engineering utilizes its in-house team to take a full-service approach to its clients’ projects, handling everything from the initial planning and permitting to the finishing touches. “Our experience in all phases of residential construction allows us to offer total project management from inception to completion,” adds Mr. Devengenzo.

Company Philosophy

“Our goal is to complete every project on time and on budget. Even if we discover something that causes a delay, we’ll communicate with the client and clearly explain the situation. We strive for perfection in all phases of our work, and we welcome the opportunity to serve each customer.”

Serving Contra Costa, Solano and Alameda Counties

Drainage
Automated Irrigation Systems
Landslide Repair
Erosion Control
Grading
Kitchen & Bathroom Remodeling
New Construction & Home Renovations

Comparative Summary

Maintaining customer satisfaction is a crucial aspect of any business, but it’s even more important for drainage contractors that have earned the prestigious Diamond Certified award. For Devengenzo Landscaping & General Engineering Inc., the key to achieving and maintaining high levels of customer satisfaction is simple: focus on exceeding expectations at every level of its service,...

Frequently Asked Questions

Q: Do you have experience with my type of project?
A: "We’ve been in the landscaping, drainage and general engineering business for more than 40 years, so we have a lot of experience with almost every type of project. "
Q: How soon can you start my job?
A: "We try to schedule every job in a timely manner. Some times of the year are busier than others, but we do our best to keep our scheduling as convenient as possible. We also don’t overload our schedule, so we’re usually able to qu...
Q: Are you on time for appointments?
A: "Yes, timeliness is very important to us. Most service companies give their clients windows for appointment times, but we always set a time that works best for each customer and stick to that. "

Industry Info

Take simple steps to ensure your home drainage system lasts as long as possible.
First, confirm that your home builder or drainage contractor installed high-quality products in your drainage system. Some companies will use corrugated piping, which collects debris and causes system backups. It’s important to request a...
Findings based on statistically reliable research from 96 surveys

Customer Satisfaction

Survey Question: On a scale of 1 to 10 how satisfied were you with the quality you received?
Chart.

Company Credentials

Workers Compensation
Liability Insurance
License Verification
Business Practices
Current Complaint File

Customer Loyalty

Survey Question: If you needed this product or service in the future, would you use this company again?
Chart.
95%
n = 96

Diamond Certified Qualification

Based on 96 customer surveys, we declare
Devengenzo Landscaping & General Engineering Inc.
has passed all rating steps and has earned
The Diamond Certified Award
No. 2069
Continuously qualified since October 2013.
David Pak
Director of Ratings Research
American Ratings Corporation

Verbatim Survey Responses From Only Verified Customers

Mike R. Verified Customer Name
"They are great in every aspect. They had a good, competitive price and they were the only ones within our price range."
Research conducted by American Ratings Corporation. Ratings Methodology

Diamond Certified® Video Profile

Company Capabilities Table

Devengenzo Landscaping & General Engineering Inc.
(925) 405-6912
DCID9259307186

Mon – Fri: 8am – 5pm

Serving Contra Costa, Solano and Alameda Counties

Marilyn Devengenzo, Secretary; Robert Devengenzo, President
47
8
566986
Liability Insurance, Workers' Compensation
Contra Costa Builders Exchange
Drainage, Automated Irrigation Systems, Landslide Repair, Erosion Control, Grading, Kitchen & Bathroom Remodeling, New Construction & Home Renovations
60
Commercial, Residential
1-Year Warranty on General Contracting Work
Contra Costa Drainage

Photo & Video Gallery

Survey Responses For

Devengenzo Landscaping & General Engineering Inc.

Devengenzo Landscaping & General Engineering Inc.: Average 9.4 out of 10 based on 96 unique customer surveys of customer satisfaction.
Mike R. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They were very punctual, they did a very good job, and they cleaned up after they did the job. They were very communicative and I would highly recommend them."

"They are great in every aspect. They had a good, competitive price and they were the only ones within our price range."

Holly G. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are a great company and I fully trust them."

"Very knowledgeable, high integrity, and dependable"

Cody M. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are straight shooters, awesome, and I just love working with them and I have worked with them multiple times."

"They are a family business and they have been working with my family for years."

Bill B. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"If you are doing any remodeling or landscaping, you would be smart to use Bob and his team."

"I guess he provides an 'A+' quality job and his company is just the type of company that you would want to do your project."

Matt M. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They did what they said they were going to do and they got done ahead of schedule."

"They do quality work."

Marcelo C. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"You can trust them completely."

"You can trust them completely."

Milton S. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"I would tell them that he is somebody with experience and he is very fair and he does what he says he is going to do."

"He was efficient and his price was right."

Linda S. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"I don't know off the top of my head."

"The quality"

Michael H. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"I would tell them not to look any further. Bob is a standup man who speaks from the heart and his word is gold."

"They know what they are doing, they tell you what they say they are going to do, and they don't make excuses. They do the job and they do it well."

Daniel D. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"I would absolutely recommend them and would work with them time and time again. They have been very solid and a pleasure to work with. They have quality workmen."

"Straightforward, professional, and they follow through."

Ed L. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are very professional, and they know their business. They are very clean, and they respect your property. They do a very good job."

"The quality of their work"

Ernest S. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"Do not worry about Mr. Devengenzo, because he is top-notch. He pays all of his employees well. He has great service and if you need him to come back to do anything, they come right back. I have never had to call them on that."

"Their expertise"

Matt S. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They do wonderful, quality work. They are very thorough, and they never cut corners. They see when things might or might not work."

"Customer service, they are always available. They do a great, thorough job on a project."

Nancy M. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are a local family who are running their company and working in the area to support the community as well as their family. It is a family business."

"The dad, the son, their workers, as well as the mom, I like that they are easy to get a hold of and to communicate with. They are very responsive from start to finish. They did everything they said they would do, and they even took my requests and did that as well. I want to put a smiley face with my comment."

Roberto G. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"Very accessible, clear, and they always showed up when they said they were going to. I was very impressed."

"I would give them a '20'. I liked that I could trust them."

Sherry M. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They are awesome. They came in, they did the work, and they were nice gentlemen. They worked hard, and they cleaned up after themselves every day. When they said they were going to be here, they were here."

"If I could go higher than a '10', I would. I had a lot of trust in them, and they were awesome. I didn't feel at any time that they were taking advantage of me. I felt that they were overly generous."

G.G.M.S. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They have been around forever, and they are a family-owned business. I would recommend them."

"Quick response"

Q.M.P.V. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"He is honest, and he never has to come back. If he has any advertisements or change orders, he gives you a price, and that is the price."

"Everything, the fact that he is just a very honest person"

Betty D. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"They're very considerate, and they work with you on pricing. "

"They arrived on time, they cleaned up after themselves, and they take care of you."

Bruce T. Verified Devengenzo Landscaping & General Engineering Inc. Customer Name
Q1:10 out of 10
Q2:Yes
Q3 & Q4:

"I don't know how to answer that question. They do a really good job, they are competent, and they are capable. They had a great team. They were fast, efficient, and very polite."

"They did a really good job, and they were capable. They were efficient and very polite."