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    Verified structural engineering services reviews

Find Structural engineers in Castle Rock

TAS Engineering, LLC

4.92(
44
)
Approved Pro

TAS Engineering, LLC

4.92(
44
)
Approved Pro
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
14 years of experience

At TAS Engineering, LLC, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer�s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order 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.

"Tom came on time and was through with the inspection and gave me some good recommendations for tearing down a wall that we were not sure if it was load bearing."

Rick L on April 2024

At TAS Engineering, LLC, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer�s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order 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.

"Tom came on time and was through with the inspection and gave me some good recommendations for tearing down a wall that we were not sure if it was load bearing."

Rick L on April 2024


Avatar for Level Engineering CO (South)

Level Engineering CO (South)

4.61(
284
)
Approved Pro

Level Engineering CO (South)

4.61(
284
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
10 years of experience

At LEVEL Engineering, we are committed to common sense, real-world engineering solutions. We started LEVEL because, after years in the building industry (Civil, Structural, Home Building, etc) we continued to see something missing in our industry that cost homeowners untold stress and frustration, contractors lost time and money and realtors and lenders left unable to satisfy their client's needs. We decided to do something about it, and then - LEVEL Engineering was founded. We serve your interests and provide knowledgeable, expert inspection, analysis, recommendation, and reporting. So whether your need is for permitting, forensics, foundation problems, new or repair engineering designs; or just for your peace of mind - let us help you navigate your structural engineering projects.

"N/A"

Jay J on December 2023

At LEVEL Engineering, we are committed to common sense, real-world engineering solutions. We started LEVEL because, after years in the building industry (Civil, Structural, Home Building, etc) we continued to see something missing in our industry that cost homeowners untold stress and frustration, contractors lost time and money and realtors and lenders left unable to satisfy their client's needs. We decided to do something about it, and then - LEVEL Engineering was founded. We serve your interests and provide knowledgeable, expert inspection, analysis, recommendation, and reporting. So whether your need is for permitting, forensics, foundation problems, new or repair engineering designs; or just for your peace of mind - let us help you navigate your structural engineering projects.

"N/A"

Jay J on December 2023


Avatar for ISTA Engineers

ISTA Engineers

4.79(
28
)
Approved Pro

ISTA Engineers

4.79(
28
)
Approved Pro
Customers say: Terrific value
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
17 years of experience

We are Colorado Certified Professional Engineers. We have been in business for 10 years: We are trustworthy. Our special skills are structural design for remodeling projects, prepare structural drawings for getting remodeling permits and inspection of building structure and foundation.

"Worst customer experience possible. Incompetence surpassed by arrogance. Took over 2.5 years to have plans that could be built on a 100 sq ft addition. Multiple reviews due to incorrect assumptions or lack of detail. Catastrophic flaw designed into the first attempted "plans". Was forced to bring in a 3rd party engineer to resolve flagrant issues with the design. Complete lack of understanding of residential roof design. Causing massive delay and over design. Would not recommend them to build an outhouse."

Erick R on October 2023

We are Colorado Certified Professional Engineers. We have been in business for 10 years: We are trustworthy. Our special skills are structural design for remodeling projects, prepare structural drawings for getting remodeling permits and inspection of building structure and foundation.

"Worst customer experience possible. Incompetence surpassed by arrogance. Took over 2.5 years to have plans that could be built on a 100 sq ft addition. Multiple reviews due to incorrect assumptions or lack of detail. Catastrophic flaw designed into the first attempted "plans". Was forced to bring in a 3rd party engineer to resolve flagrant issues with the design. Complete lack of understanding of residential roof design. Causing massive delay and over design. Would not recommend them to build an outhouse."

Erick R on October 2023


Innovative Structural Services

4.72(
46
)
Approved Pro

Innovative Structural Services

4.72(
46
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 years of experience

Innovative Structural Services provides the most professional structural engineering and CAD drafted designs in the Rocky Mountain Region. We're backed by 12 years of experience. Give us a call today!

"He was very good"

Jesse A on September 2022

Innovative Structural Services provides the most professional structural engineering and CAD drafted designs in the Rocky Mountain Region. We're backed by 12 years of experience. Give us a call today!

"He was very good"

Jesse A on September 2022


Advanced Structural Engineering, LLC

5.00(
9
)
Approved Pro

Advanced Structural Engineering, LLC

5.00(
9
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
11 years of experience

Advanced Structural Engineering LLC, is 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.

"Very prompt and professional. Would highly recommend."

Eric B on January 2021

Advanced Structural Engineering LLC, is 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.

"Very prompt and professional. Would highly recommend."

Eric B on January 2021


Avatar for J2.26, LLC

J2.26, LLC

4.69(
13
)
Approved Pro

J2.26, LLC

4.69(
13
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
8 years of experience

Daniel is 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. Due to the nature of this service and the liability involved, there is a consultation fee associated with scheduling an appointment.

"Our building hired J2.26 to conduct an engineering report, and the experience was incredibly frustrating and disappointing. Dan, the engineer, visited our property on July 17, 2024, and we paid promptly for the service. Despite that, and after at least six emails and phone calls from our property manager over the following months, we never received the report. Over a year later, on July 28, 2025, I went to their office in person to get answers. Dan was rude, dismissive, and offered no apology. His only excuse was that the job had ?fallen through the cracks.? That level of disregard for a paid service is unacceptable. He agreed to return to our property and conduct a new scan at no additional charge, which he did the next day. While we finally received a report on August 19, 2025, it still did not include the original report we had paid for in 2024. The lack of communication, professionalism, and accountability from J2.26 is baffling. I would not recommend this company to anyone."

Madison C on September 2025

Daniel is 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. Due to the nature of this service and the liability involved, there is a consultation fee associated with scheduling an appointment.

"Our building hired J2.26 to conduct an engineering report, and the experience was incredibly frustrating and disappointing. Dan, the engineer, visited our property on July 17, 2024, and we paid promptly for the service. Despite that, and after at least six emails and phone calls from our property manager over the following months, we never received the report. Over a year later, on July 28, 2025, I went to their office in person to get answers. Dan was rude, dismissive, and offered no apology. His only excuse was that the job had ?fallen through the cracks.? That level of disregard for a paid service is unacceptable. He agreed to return to our property and conduct a new scan at no additional charge, which he did the next day. While we finally received a report on August 19, 2025, it still did not include the original report we had paid for in 2024. The lack of communication, professionalism, and accountability from J2.26 is baffling. I would not recommend this company to anyone."

Madison C on September 2025


Avatar for J2.26 Engineering, LLC

J2.26 Engineering, LLC

4.33(
6
)
Approved Pro

J2.26 Engineering, LLC

4.33(
6
)
Approved Pro
Customers say: Terrific value

J2.26 Engineering provides structural engineering inspection, design, and advice. We pride ourselves in providing these services with a personal manner for a reasonable cost. J2.26 can provide consultations in new build construction projects, remodels to homes, and Real Estate transactions.

"Unfortunately, our experience with Dan was about as bad as it could be. We were given a timeline of 5 weeks in mid February and, after months of ignored emails, finally received drawings in mid-June, 17 weeks later. Once submitted for permitting, the county realized that the snow load information was incorrect and rejected the plans. Frustrating to say the least. In discussing the requisite changes over the phone, Dan seemed unaware of fairly standard industry terms in residential construction (rake wall, difference between ceiling joist and roof rafter, cut roof vs truss, etc) which made us uncomfortable, to say the least. Keep in mind, this is after months of radio silence and considering we'd have to start from scratch with another engineer. Things were discussed three, four times and necessary changes still not made. Fortunately we work with our building department a lot, and these can be addressed in the field. I understand that delays happen. I understand that things can get complicated, often quickly. That said, I expect a level of professionalism, communication, and competence when paying someone for their service. You're a smart consumer and will do as you wish, but we will never, under any circumstance, be using Dan and J2.26 Engineering ever again."

Corbin C on September 2020

J2.26 Engineering provides structural engineering inspection, design, and advice. We pride ourselves in providing these services with a personal manner for a reasonable cost. J2.26 can provide consultations in new build construction projects, remodels to homes, and Real Estate transactions.

"Unfortunately, our experience with Dan was about as bad as it could be. We were given a timeline of 5 weeks in mid February and, after months of ignored emails, finally received drawings in mid-June, 17 weeks later. Once submitted for permitting, the county realized that the snow load information was incorrect and rejected the plans. Frustrating to say the least. In discussing the requisite changes over the phone, Dan seemed unaware of fairly standard industry terms in residential construction (rake wall, difference between ceiling joist and roof rafter, cut roof vs truss, etc) which made us uncomfortable, to say the least. Keep in mind, this is after months of radio silence and considering we'd have to start from scratch with another engineer. Things were discussed three, four times and necessary changes still not made. Fortunately we work with our building department a lot, and these can be addressed in the field. I understand that delays happen. I understand that things can get complicated, often quickly. That said, I expect a level of professionalism, communication, and competence when paying someone for their service. You're a smart consumer and will do as you wish, but we will never, under any circumstance, be using Dan and J2.26 Engineering ever again."

Corbin C on September 2020


Bowman Architecture & Engineering

5.00(
1
)
Approved Pro

Bowman Architecture & Engineering

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

As a licensed Professional Engineer specializing in structural design for over 40 years (the last 15 years primarily in the residential sector) I am offering my services to the residential community. My experience in the residential area has ranged from interior modifications and additions (including decks and basement improvements) to large scale custom homes. I am also a licensed Architect. As such I am able to serve clients needs for the architectural components of their projects. I strive to be a good listener to the client's requests. I attempt to find the most economical solutions while meeting the client's goals, ultimately producing the necessary documents in a timely manner.

"This engineer got me out of a bind when my contractor did not build to plan. Excellent attention to detail, completed the design on time and on budget. Highly recommend this engineer for any level of project."

James A on August 2022

As a licensed Professional Engineer specializing in structural design for over 40 years (the last 15 years primarily in the residential sector) I am offering my services to the residential community. My experience in the residential area has ranged from interior modifications and additions (including decks and basement improvements) to large scale custom homes. I am also a licensed Architect. As such I am able to serve clients needs for the architectural components of their projects. I strive to be a good listener to the client's requests. I attempt to find the most economical solutions while meeting the client's goals, ultimately producing the necessary documents in a timely manner.

"This engineer got me out of a bind when my contractor did not build to plan. Excellent attention to detail, completed the design on time and on budget. Highly recommend this engineer for any level of project."

James A on August 2022


"Greg was absolutely great----arrived early, incredibly professional, and found several things I suspect a lot of other competitors would have missed which were very much appreciated. The inspection went fast, but nothing was missed. This guy obviously knows his stuff, and we've already recommended him to a neighbor considering selling and buying a new house too. Again, great guy, highly professional and knowledgeable, and reasonably priced. A+++ Scott Hoffman"

Scott H on April 2019

We have closed in Colorado as of 2018

"Greg was absolutely great----arrived early, incredibly professional, and found several things I suspect a lot of other competitors would have missed which were very much appreciated. The inspection went fast, but nothing was missed. This guy obviously knows his stuff, and we've already recommended him to a neighbor considering selling and buying a new house too. Again, great guy, highly professional and knowledgeable, and reasonably priced. A+++ Scott Hoffman"

Scott H on April 2019


Avatar for Kellar & Associates LLC

Kellar & Associates LLC

4.14(
50
)

Kellar & Associates LLC

4.14(
50
)
Customers say: Super punctual
24 years of experience

Welcome! Kellar Associates is an innovator in residential construction we are changing how business gets done. As a General Contractor we are the organizer and leader of a great team. Successful projects are measured on a macro level and a micro level with pre-planning and managing details to ensure a clear path. Our commitment to give our customers a good experience is our most valuable asset. Each house gets our special brand of two guarantees 1( We commit to treat your house the way we would treat our own home giving the same pride of craftsmanship 2( We will do our best work every time. Yes! You will find it written into our contract. In every project there are only three essential elements schedule, cost, and quality. Typically the owner has determined what priority these elements are to be considered by competing General contractors when bidding a project usually with quality as the unintended third consideration. Kellar Associates has changed the way residential construction gets done. We have formed relationships with subcontractors that share our beliefs of doing our best work every time and living inside of budgets. It is ok to not look at the individual profitability of a project when you know that it varies, but because the subs work together on all of our projects everything balances throughout the year. By working with these type of personnel it is easy to say that the price doesn’t matter if the quality isn’t there and that is how we start all of our relationships. We don’t believe in change orders unless the owner requested a change. Sometimes it is unavoidable to change your mind as your dreamy project gets closer to being a reality. We take a great interest in our customers to protect you from unforeseen circumstances when possible and to give information of unintended consequences when making your owners typical decisions such as finishes or changes.

Welcome! Kellar Associates is an innovator in residential construction we are changing how business gets done. As a General Contractor we are the organizer and leader of a great team. Successful projects are measured on a macro level and a micro level with pre-planning and managing details to ensure a clear path. Our commitment to give our customers a good experience is our most valuable asset. Each house gets our special brand of two guarantees 1( We commit to treat your house the way we would treat our own home giving the same pride of craftsmanship 2( We will do our best work every time. Yes! You will find it written into our contract. In every project there are only three essential elements schedule, cost, and quality. Typically the owner has determined what priority these elements are to be considered by competing General contractors when bidding a project usually with quality as the unintended third consideration. Kellar Associates has changed the way residential construction gets done. We have formed relationships with subcontractors that share our beliefs of doing our best work every time and living inside of budgets. It is ok to not look at the individual profitability of a project when you know that it varies, but because the subs work together on all of our projects everything balances throughout the year. By working with these type of personnel it is easy to say that the price doesn’t matter if the quality isn’t there and that is how we start all of our relationships. We don’t believe in change orders unless the owner requested a change. Sometimes it is unavoidable to change your mind as your dreamy project gets closer to being a reality. We take a great interest in our customers to protect you from unforeseen circumstances when possible and to give information of unintended consequences when making your owners typical decisions such as finishes or changes.

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Structural Engineering questions, answered by experts

Yes, walls on the top floor can be load-bearing if stacked on the floor’s foundation.

While concrete walls do not need to "breathe" in the traditional sense of the word, they do require waterproofing and dehumidifying methods, particularly in basements below the water table. Concrete both contains moisture from its initial installation and can absorb water when exposed. Ensuring proper basement ventilation , installing a vapor barrier, and controlling water exposure are all important tasks.

In framing, studs are placed at 16-inch intervals to coincide with the typical spacing of wall materials such as drywall or plywood. This spacing is called "on-center" and is necessary for maintaining structural stability and efficient use of materials. The 16-inch spacing also helps to distribute the weight evenly across the building's structure. For those looking to cut material costs and improve energy efficiency, 24-inch stud spacing can be employed through a method called "advanced framing". This requires careful planning and adherence to local building codes to ensure structural integrity.

Structural engineers are necessary for projects involving alterations to load-bearing structures, foundation work, and compliance with safety standards. This includes home expansions, retaining walls, and significant repairs that impact a property's integrity.

Through proper drainage solutions and compacting the foundation soil.

The Castle Rock, CO homeowners’ guide to structural engineering services

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