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Sierra Engineering Services

Member | 370 inquiries |
Engineers

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3158 Red Hill Avenue, Suite 140
Costa Mesa, CA 92626 | Get Directions

(714) 852-3855

https://sierraengsvc.com/

9:00 AM to 5:00 PM Mon. - Fri.

Company Rating

AAA

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Customer Reviews

based on 3 reviews.

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Complaint Experience

N/A

Complaint Resolution Index (CRI)

Complaint Resolution Index (CRI) Explained The Complaint Resolution Index (CRI) is an indicator on how responsive a company is in addressing and resolving customer complaints brought to their attention by BCA. If they are considering doing business with the company, consumers can use this indicator to forecast the likelihood of having their issues addressed if a problem arises. CRI measures the company's customer satisfaction abilities through BCA’s complaint mediation process.

A variety of factors are considered when calculating CRI. This includes how quickly a company responds to complaints, the number of complaints against a company, whether the company addressed complaint allegations, and the outcome of the complaints. CRI is just a subset of the overall rating for the company. Consumers are encouraged to take into consideration the company's CRI, their overall BCA letter rating and other relevant information about the company so they can make a well-informed purchasing decision.

Membership Information

Proud member since 06/22/2018
This company is a Member of Business Consumer Alliance.

Recent Review

Posted on 5/28/2026 Martin N.

From start to finish, their team demonstrates an exceptional level of technical expertise, professionalism and dedication

We've been partnering with Sierra Engineering Services for many years for environmental consulting support, and I cannot recommend them highly enough. From start to finish, their team demonstrates an exceptional level of technical expertise, professionalism, and dedication to our project(s). Environmental compliance can be a complex and fast-moving landscape, but Sierra Engineering has made the entire process seamless. They provide clear, actionable guidance, meet every tight deadline, and ensure that our operations are fully aligned with regulatory standards. What impresses me most is their proactive communication and ability to break down intricate requirements into practical solutions for our team. If you are looking for a reliable, knowledgeable, and highly professional environmental consulting partner, Sierra Engineering is top tier. We are incredibly satisfied with their work and look forward to partnering with them on future projects

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Complaints and Resolutions

Complaint Experience

N/A

Complaint Resolution Index (CRI)

BCA's Summary and Analysis:

We have received no complaints against this company.

Our complaint services are free and our team of expert mediators will assist in resolving complaints with businesses.

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Complaint Closing Statistics

0 complaints against Sierra Engineering Services closed in last 3 years.

Complaints	Type of response
0	Making a full refund, as the consumer requested
0	Making a partial refund
0	Agreed to make an adjustment
0	Refusing to make an adjustment
0	Refuse to adjust, relying on terms of agreement
0	Unanswered

Other Information

Company Info

Sierra Engineering has been providing technical & regulatory for over the past two decades to various types of industrial, commercial & agricultural operations through out the state of California.

Primary Contact:	Saeed Ahdout (President)
Business Started:	5/31/2001
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About Sierra Engineering Services

Sierra Engineering is an environmental engineering & consulting company engaged in assisting, industrial, commercial, public & agricultural operations to comply with the various regulatory requirements throughout the State of California.

Scope of Environmental Engineering Services:

Air Quality Compliance Services
Water Quality Compliance Services
Engineering Reports & Environmental Studies

Interested in Sierra Engineering Services?
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Licensing

We know of no licensing or registration requirement for companies engaged in this company's stated type of business.

Government Actions

BCA has no information regarding government actions at this time.

Comments and Analysis

We have no further comment about this company's business practices or analysis of its offer that may assist you in your consideration of this company.

Other Considerations

We know of no other matter or practice relating to this company that may assist you in your consideration of this company.

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Additional Info

DBAs:
There are no additional DBAs.

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Customer Service

Photo Gallery

Sierra Engineering Services

Compliance Requirements

Engineering & Environmental Studies

Water Quality Compliance

Air Quality Compliance

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