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TRUSTED BY LONGMONT, CO HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon456
    Verified structural engineering services reviews

Top-Rated Structural engineers in Longmont - Updated Nov 2026

TAS Engineering, LLC
4.7(
50
)
Engineer - Structural

Serving Longmont, CO and surrounding areas

Approved

In business since 2011

Emergency services offered

Customers say: True professional

"Tom at TAS Engineering was professional, friendly, helpful, patient and highly competent and efficient. He did the assessment of my attic structural issue and identified the simplest and most cost-effective solution. He ensured that my contractor did the work to his specifications and provided the certified engineering letter that all had been addressed properly. This was exactly what I needed. I would highly recommend him and would hire him again."
Response time2 hrs
Recommended by97%of homeowners
Innovative Structural Services
4.6(
50
)
Engineer - Structural

Serving Longmont, CO and surrounding areas

Approved

In business since 2007

Credit card accepted

Customers say: Quick response

"They came out to assess any recent changes to the structural integrity of our home. They were timely, knowledgeable and thorough. They were also very helpful in communicating their initial thoughts throughout the inspection. (written report is still pending)"
New Floor Plan Level 1
New Floor Plan Level 2
Org. Floor Plan Level 1
Org. Floor Plan Level 2
Garage Addition Plan

+1

Response time1 day
Response rate87%
2 neighbors recently requested a quote
Avatar for ISTA Engineers
ISTA Engineers
4.7(
31
)
Engineer - Structural

Serving Longmont, CO and surrounding areas

Approved

In business since 2008

Free estimates

Offers commercial services

"Pedram provided us with great service at an exceptional value. He completed the necessary drawings for our structural wall removal, and we were able to get a permit with no comments from the city. I would recommend to anyone looking for a structural engineer."
Remodeling Project
Dumfries Project
Removing Bar Walls
Response time9 hrs
Response rate88%
Recommended by96%of homeowners
Medeiros Architectural Group, Inc.
4.9(
17
)
Draftsperson/CADDArchitectArchitect - For Business

Serving Longmont, CO and surrounding areas

Approved

In business since 2004

Free estimates

Customers say: True professional

"We got what we paid for but it was going to cost too much to proceed to get actual cost estimates and proceed with design and blueprints and construction.  We were disappointed that we could not get actual cost estimates and design for a reasonable price so we could decide whether to pursue the addition.
"
Response time1 day
1 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Straight Edge Construction Services LLC
Straight Edge Construction Services LLC
5.0(
4
)
Engineer - Structural

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"From the start I knew Ryan was the right person, because he called me, the only one of the engineers that actually called me. He communicated regularly, let me know straight up the results and explained it all to me. Is also willing to answer questions from my contractor."
Response time1 day
8 neighbors recently requested a quote
Avatar for Evolution Drafting
Evolution Drafting
3.7(
127
)
Draftsperson/CADDArchitectArchitect - For Business

Serving Longmont, CO and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"They were excellent. They quickly made a draft that only needed 3 minor adjustments. The final product was exactly what I needed. They referred me to a structural engineer for review. The whole process took half of the time that they initially estimated. I would definitely use them again."
Zeal Floor Plan
Charcoal
Palm Floor Plan
Charcoal Floor 2
Charcoal Floor 1

+23

Response time1 day
Response rate100%
66 neighbors recently requested a quote
Avatar for Vital Architecture, LLC
Vital Architecture, LLC
4.3(
7
)
Architect - For Business

Serving Longmont, CO and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"We had a great experience working with Vital Architecture and highly recommend her. For Little Village Childcare, she helped us save money by confirming certain landlord requests were not required by code and securing a waiver that saved space and costs. She also reduced civil engineering expenses by preparing the playground drainage plan herself. During construction, she provided extra support at no cost and helped us handle contractor changes wisely. For another church childcare project, she identified zoning issues early so everyone understood the risks. In Colorado Springs, she warned a tenant about higher plumbing costs required by childcare regulations, helping them avoid a bad lease. For an adult care project, she reviewed the food area and explained new kitchen and ventilation requirements. Carmen is knowledgeable, thorough, and truly looks out for her clients’ best interests."
Star light Subdivision
Fairview Littleton Co.
Hazel ADU
New Beach SFH
New Mixed use Mason Square

+22

Response time4 hrs
Response rate96%
2 neighbors recently requested a quote
Avatar for Maliakai Architectural Design
Maliakai Architectural Design
5.0(
6
)
Architect

Serving Longmont, CO and surrounding areas

Approved

In business since 2005

Free estimates

Offers commercial services

"Marc was attentive, understanding and really a good point of contact through our build process giving us the information we needed to accomplish our goals in our pre build process. He remains a point of contact for all future questions and concerns!"
Bright Tanks
Livign Room
Bar Seating
Cocktail Bar and Dining
New Exterior

+48

Response time12 hrs
Response rate96%
5 neighbors recently requested a quote
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Structural Engineering FAQs, answered by experts

Structural engineers typically conduct inspections during a home sale or renovation, looking for signs of structural damage in various structures throughout the building, such as load-bearing walls, joists, beams, roofing trusses, foundations, and chimneys. Some of the warning signs that structural engineers check for include:

  • Dry rot

  • Infestation

  • Shifting or cracking foundations

  • Erosion

  • Water damage

  • Sagging, shifting, or damaged walls, ceilings, or roofing support

According to the Earthquake Country Alliance—a public and private alliance in California that works to improve earthquake and tsunami readiness—reports that unreinforced masonry, such as stone, bricks, and hollow clay tiles, is more susceptible to earthquake damage. The mortar between bricks isn’t as stable as other building materials and methods.

Structural engineers specialize in all aspects of a building’s structural integrity, including the foundation. Foundation engineering is a critical part of structural engineering, so structural engineers are experts in foundation design. Many foundation repair companies either have a structural engineer on staff or one they work closely with, so be sure you look for that when deciding who to hire for foundation repair.

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.

You should pick steel for your new support beam for a few reasons. While steel is more expensive than other materials, such as laminated veneer lumber or glulam, it offers the following benefits:

  • Fire-resistant

  • Unaffected by pests

  • Longer-lasting

  • Stronger against water damage (when galvanized against rust)

The Longmont, CO homeowners’ guide to structural engineering services

From average costs to expert advice, get all the answers you need to get your job done.