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Find Structural engineers in Seatac

Avatar for Consulting Structural Engineering Services, Inc. (CSES)

Consulting Structural Engineering Services, Inc. (CSES)

4.41(
75
)
Approved Pro

Consulting Structural Engineering Services, Inc. (CSES)

4.41(
75
)
Approved Pro
Customers say: True professional
33 years of experience
Free onsite estimate

John S. Apolis, P.E., President of C, offers over 30+ years of experience in Structural Engineering Design for almost every type of construction project. We have provided design many types of structures. Our design costs are often lower because as a smaller firm, we have lower overhead costs. In addition, our turn-around times often are faster, because of the way we organize our work schedule. We typically provide full structural design for additions and remodel projects for 100 or more satisfied architects and homeowners each year, as well as a similar number of smaller "one day" or even "two hour" projects. We try whenever possible to give you what you need, when you need it. No project is too large or too small. If you are looking for a structural design firm which will stand behind their work, and provide you with timely and cost-effective structural design for your remodel, look no further.

"They were quick and got back to me right away."

Jim D on September 2025

John S. Apolis, P.E., President of C, offers over 30+ years of experience in Structural Engineering Design for almost every type of construction project. We have provided design many types of structures. Our design costs are often lower because as a smaller firm, we have lower overhead costs. In addition, our turn-around times often are faster, because of the way we organize our work schedule. We typically provide full structural design for additions and remodel projects for 100 or more satisfied architects and homeowners each year, as well as a similar number of smaller "one day" or even "two hour" projects. We try whenever possible to give you what you need, when you need it. No project is too large or too small. If you are looking for a structural design firm which will stand behind their work, and provide you with timely and cost-effective structural design for your remodel, look no further.

"They were quick and got back to me right away."

Jim D on September 2025


Avatar for Engineered Structures Global Design, PLLC

Engineered Structures Global Design, PLLC

5.00(
8
)
Approved Pro

Engineered Structures Global Design, PLLC

5.00(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

ESG DESIGN IS YOUR SOURCE FOR LICENSED PROFESSIONAL STRUCTURAL ENGINEERING SERVICES. At ESG Design, our goal is to provide our clients with a suite of design tools and construction advice that brings true value to the project owner. We are a small local business with low overhead and efficient design systems, which allows us to keep our rates low and our focus on the needs of our customer. Whether you are looking for preliminary design feasibility advice, standard construction plans engineering, or detailed structural performance analysis, ESG Design is at your service. Email us at: [email protected]

"Good engineer and very responsive."

Cliff B on September 2020

ESG DESIGN IS YOUR SOURCE FOR LICENSED PROFESSIONAL STRUCTURAL ENGINEERING SERVICES. At ESG Design, our goal is to provide our clients with a suite of design tools and construction advice that brings true value to the project owner. We are a small local business with low overhead and efficient design systems, which allows us to keep our rates low and our focus on the needs of our customer. Whether you are looking for preliminary design feasibility advice, standard construction plans engineering, or detailed structural performance analysis, ESG Design is at your service. Email us at: [email protected]

"Good engineer and very responsive."

Cliff B on September 2020


Avatar for Beyler Consulting, LLC

Beyler Consulting, LLC

4.27(
59
)
Approved Pro

Beyler Consulting, LLC

4.27(
59
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
19 years of experience

Beyler Consulting, LLC, brings an unmatched commitment to excellence to your engineering, surveying, and design project needs. We deliver unsurpassed professionalism and expertise. Our services include civil engineering, land surveying, land planning, permitting, project management, building design and plan preparation. We are a small company but we have developed our company such that we can provide the same level of service as a large company without the large company price tag. No project too small or too big. Call us today to see how our exceptional services will help you!

"Stay away. Got a bid from this company for $13k. So far I have been billed over $52k. Everytime they submitted something to the City it is never correct/complete, and they bill me for their incompetence/mistakes."

Cuong T on May 2022

Beyler Consulting, LLC, brings an unmatched commitment to excellence to your engineering, surveying, and design project needs. We deliver unsurpassed professionalism and expertise. Our services include civil engineering, land surveying, land planning, permitting, project management, building design and plan preparation. We are a small company but we have developed our company such that we can provide the same level of service as a large company without the large company price tag. No project too small or too big. Call us today to see how our exceptional services will help you!

"Stay away. Got a bid from this company for $13k. So far I have been billed over $52k. Everytime they submitted something to the City it is never correct/complete, and they bill me for their incompetence/mistakes."

Cuong T on May 2022


Avatar for McCann Structural Solutions

McCann Structural Solutions

5.00(
4
)
Approved Pro

McCann Structural Solutions

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
39 years of experience

At McCann Structural Solutions, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all the work we perform. We are experts and will always keep you educated about the work process. We do have the ability to work electronically. General Engineering Process: 1. Initial phone interview. 2. Exchange of any relevant information. 3. A possible preliminary site visit to gather further information necessary to provide a proposal. There is a separate fee for site visit, payable on site. Depending on the location of the project, the amount for the site visit will vary - minimum is $600.00. The actual amount will be quoted prior to any initial site visit. 4. McCann Structural Solutions will write and send a proposal via email. 4. Homeowner sign and return proposal with retainer fee. 5. In process coordination as needed during design. 6. Preparation of calculations and any needed drawings.

"Great experience"

Vinod M on November 2023

At McCann Structural Solutions, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all the work we perform. We are experts and will always keep you educated about the work process. We do have the ability to work electronically. General Engineering Process: 1. Initial phone interview. 2. Exchange of any relevant information. 3. A possible preliminary site visit to gather further information necessary to provide a proposal. There is a separate fee for site visit, payable on site. Depending on the location of the project, the amount for the site visit will vary - minimum is $600.00. The actual amount will be quoted prior to any initial site visit. 4. McCann Structural Solutions will write and send a proposal via email. 4. Homeowner sign and return proposal with retainer fee. 5. In process coordination as needed during design. 6. Preparation of calculations and any needed drawings.

"Great experience"

Vinod M on November 2023


Triple V Consultants & Associates

4.00(
18
)
Approved Pro

Triple V Consultants & Associates

4.00(
18
)
Approved Pro
22 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Very professional "

Sabrina S on December 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Very professional "

Sabrina S on December 2025


Avatar for BT Engineers LLC

BT Engineers LLC

5.00(
3
)
Approved Pro

BT Engineers LLC

5.00(
3
)
Approved Pro
Free onsite estimate

We're a locally owned and operated company that values honesty and integrity and treats your individual projects with attention to detail. We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We are a licensed professional engineering firm here to provide structural plans and calculations to obtain permits for specific projects. We have worked on projects related to new construction, remodeling, additions, fire damage, water intrusion damage, and tree strike damage. We can also provide building envelope/waterproofing consultation services. We can provide structural and building envelope assessments as well. We look forward to earning your business!

"This new house project was very complicated. Large house on a designated steep slope lot with lower soil baring capacity. City of Seattle reviewers get very detailed on ECA projects. Pin piles were required by Geo Teck etc…. Ben handled it well and very professionally. Responded several times to city’s demands. He did not try to nickel and dime me for every little extra, and there were many extras, all projects have extras. His pricing was very competitive, which is also very important. I highly recommend Ben. "

Vedad M on December 2025

We're a locally owned and operated company that values honesty and integrity and treats your individual projects with attention to detail. We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We are a licensed professional engineering firm here to provide structural plans and calculations to obtain permits for specific projects. We have worked on projects related to new construction, remodeling, additions, fire damage, water intrusion damage, and tree strike damage. We can also provide building envelope/waterproofing consultation services. We can provide structural and building envelope assessments as well. We look forward to earning your business!

"This new house project was very complicated. Large house on a designated steep slope lot with lower soil baring capacity. City of Seattle reviewers get very detailed on ECA projects. Pin piles were required by Geo Teck etc…. Ben handled it well and very professionally. Responded several times to city’s demands. He did not try to nickel and dime me for every little extra, and there were many extras, all projects have extras. His pricing was very competitive, which is also very important. I highly recommend Ben. "

Vedad M on December 2025


Avatar for Kim & Tech

Kim & Tech

5.00(
3
)
Approved Pro

Kim & Tech

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 years of experience

Kim Eui (Elliot), recently worked as Structural Engineer for the City of LA for over 10 years and working at various structural firms in California and Washington State with licensed Civil and Structural Engineer in State of Washington and California, extra architect license of S Korea. Worked in Los Angeles, Sacramento in California, and Seattle, Lacey in Washington. Specializes in residential addition, new construction of residence to get Building permit by Civil and Structural Engineering. Can take on residential projects to large commercial projects. Call Kim Eui, today with any questions or projects you have.

"Very responsive and extremely professional"

Marvin C on October 2020

Kim Eui (Elliot), recently worked as Structural Engineer for the City of LA for over 10 years and working at various structural firms in California and Washington State with licensed Civil and Structural Engineer in State of Washington and California, extra architect license of S Korea. Worked in Los Angeles, Sacramento in California, and Seattle, Lacey in Washington. Specializes in residential addition, new construction of residence to get Building permit by Civil and Structural Engineering. Can take on residential projects to large commercial projects. Call Kim Eui, today with any questions or projects you have.

"Very responsive and extremely professional"

Marvin C on October 2020


Avatar for ESG Design

ESG Design

4.89(
75
)

ESG Design

4.89(
75
)
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

ESG Design is your source for licensed professional structural engineering services. At ESG Design, our goal is to provide our clients with expert advise, professional service, and the highest quality Engineering and Architectural design work. We are a local small business focused on the unique needs of each customer and your specific project. Whether you are looking for preliminary design feasibility advice, standard construction plans engineering, or detailed structural performance analysis, ESG Design is here to support you. Email us at: [email protected]

"The communication was excellent! I really felt comfortable working with Eli and ESG. He went the extra mile to ensure my questions were answered. I would definitely hire ESG again."

Seth G on January 2022

ESG Design is your source for licensed professional structural engineering services. At ESG Design, our goal is to provide our clients with expert advise, professional service, and the highest quality Engineering and Architectural design work. We are a local small business focused on the unique needs of each customer and your specific project. Whether you are looking for preliminary design feasibility advice, standard construction plans engineering, or detailed structural performance analysis, ESG Design is here to support you. Email us at: [email protected]

"The communication was excellent! I really felt comfortable working with Eli and ESG. He went the extra mile to ensure my questions were answered. I would definitely hire ESG again."

Seth G on January 2022


Avatar for Robbins & Co

Robbins & Co

4.78(
54
)

Robbins & Co

4.78(
54
)
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

30 employees. Cost is determined by the job. Travel charges apply. Additional DBAs - Robbins & Company Inc, Robbins and Company Foundation Systems, Robbins Foundation Systems, Robbins House Moving. Additional phones - (206) 244-7475, (206) 244-8518, (206) 762-2467. Additional e-mail - [email protected].

"If I could give this company a negative star rating, I would. This is by far the worst company I’ve ever dealt with, of any type, in my entire life. I had a settling garage and in November 2019 I contacted Robbins to see if they could fix it . After looking at the project, they told me that they could not consider proceeding or giving me an estimate without my obtaining an engineers report. They referred me to an engineer who prepared a report (for $4000) and then provided a copy to me and to Robbins. In January 2020, I contacted Robbins to see if they could give me an estimate based on the report. They said they would get back to me. At minimum, over the next six months, I had at least 10 communications with Robbins (not an exaggeration), either over the telephone or in writing trying to determine the status of my project. During that time, when I contacted them, they either didn’t respond to my communication or told me that they were still “working on it.“ Finally, frustrated after six months, I asked to speak with a supervisor. I explained the situation, he apologized profusely, and told me that he would look into the situation, and get back to me the next day. A week went by and I heard nothing back from the supervisor, as promised. So, I ended up calling the supervisor and asked him what he found out. He told me that based upon the engineering proposal, “this was not a project that they would do.“ I asked him why, if he had the engineering plans for six months, I wasn’t advised sooner that they weren’t going to proceed on the project. He simply said that he thought it had been communicated to me. So, eight months after contacting this company, I have incurred over $4000 in engineering fees and have to start searching for a foundation repair company all over, after wasting my time with Robbins. Obviously, from other reviews, other people have had different experiences with this company. For me personally, I have never been treated so poorly with customer service or had such a horrible experience."

John E on June 2020

30 employees. Cost is determined by the job. Travel charges apply. Additional DBAs - Robbins & Company Inc, Robbins and Company Foundation Systems, Robbins Foundation Systems, Robbins House Moving. Additional phones - (206) 244-7475, (206) 244-8518, (206) 762-2467. Additional e-mail - [email protected].

"If I could give this company a negative star rating, I would. This is by far the worst company I’ve ever dealt with, of any type, in my entire life. I had a settling garage and in November 2019 I contacted Robbins to see if they could fix it . After looking at the project, they told me that they could not consider proceeding or giving me an estimate without my obtaining an engineers report. They referred me to an engineer who prepared a report (for $4000) and then provided a copy to me and to Robbins. In January 2020, I contacted Robbins to see if they could give me an estimate based on the report. They said they would get back to me. At minimum, over the next six months, I had at least 10 communications with Robbins (not an exaggeration), either over the telephone or in writing trying to determine the status of my project. During that time, when I contacted them, they either didn’t respond to my communication or told me that they were still “working on it.“ Finally, frustrated after six months, I asked to speak with a supervisor. I explained the situation, he apologized profusely, and told me that he would look into the situation, and get back to me the next day. A week went by and I heard nothing back from the supervisor, as promised. So, I ended up calling the supervisor and asked him what he found out. He told me that based upon the engineering proposal, “this was not a project that they would do.“ I asked him why, if he had the engineering plans for six months, I wasn’t advised sooner that they weren’t going to proceed on the project. He simply said that he thought it had been communicated to me. So, eight months after contacting this company, I have incurred over $4000 in engineering fees and have to start searching for a foundation repair company all over, after wasting my time with Robbins. Obviously, from other reviews, other people have had different experiences with this company. For me personally, I have never been treated so poorly with customer service or had such a horrible experience."

John E on June 2020


Avatar for Bogman Construction Services

Bogman Construction Services

5.00(
16
)

Bogman Construction Services

5.00(
16
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

40 years of experience. We have the ability and the flexibility to integrate new technologies into our clients’ homes. Efficiently bringing quality & class, with an understanding of constant communication.We believe that teams, not individuals, are the essential unit of this organization for achieving high performance and accelerating personal growth.We pride ourselves on having people who complement their construction knowledge and technical capabilities with a strong commitment to safety, quality and schedule. Additional DBA - Bogman Company LLC.

40 years of experience. We have the ability and the flexibility to integrate new technologies into our clients’ homes. Efficiently bringing quality & class, with an understanding of constant communication.We believe that teams, not individuals, are the essential unit of this organization for achieving high performance and accelerating personal growth.We pride ourselves on having people who complement their construction knowledge and technical capabilities with a strong commitment to safety, quality and schedule. Additional DBA - Bogman Company LLC.

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Structural Engineering questions, answered by experts

The standard thickness for an LVL beam is between 1.75 inches and 7 inches. However, you can order LVL beams in non-standard sizes as well. When you work with a contractor, they can source beams that are the appropriate size for your project for you after assessing your blueprints.

Whether you’re building a new home or building an extension on your existing property, you will likely need both a structural engineer and an architect. A structural engineer will determine what loads your foundation and framing can safely handle, and an architect will draw plans according to those structural calculations to simplify the building process. You can start by contacting a structural engineer near you, as many work alongside architects and can get all of the prep work done at once.

The costs depend on the type of wood, labor, roofing material, permits, and whether additional storage or enclosed walls are included.

Yes, they offer plans for repairs or reinforcements to address issues.

A construction manager is particularly useful in the case of a large-scale build with custom design elements, so it’s usually worth it to hire one. They can help manage your budget, maintain quality control, oversee timelines, and navigate unexpected hurdles. While construction managers are pricey, they can actually save money in the long run by identifying cost-saving opportunities and ensuring the project stays within budget.

The Seatac, WA homeowners’ guide to structural engineering services

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