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TRUSTED BY SAMMAMISH, WA HOMEOWNERS

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    Average homeowner rating
  • Verified reviews icon49
    Verified structural engineering services reviews

Find Structural engineers in Sammamish

Avatar for Engineered Structures Global Design, PLLC
Engineered Structures Global Design, PLLC
4.6(
11
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2006

Customers say: Quick response

"ESG Design was great to work with. I contacted them through Home Advisor for an impartial assessment of the cause of cracks in my ceiling, plus a few other issues. Eli, the engineer, did a thorough inspection and developed a solid plan for repairs. ESG also offered two levels of fees, which was extremely helpful for my budget. Thank you ESG for the service and peace of mind!"
Finished
Finished
Vaulted hallway ceiling
Construction
Vaulted roof beam

+17

Response time4 days
Recommended by100%of homeowners
Avatar for Johnson Custom Builders
Johnson Custom Builders
4.9(
102
)

Serving Sammamish, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"Ryan and team did a fantastic job of helping us with a project to repair a beam that was structurally unsound. We were kept very well informed of all key events and as usual (we’ve worked with Ryan several times) everything went without a hitch. Ryan and team do an outstanding job, and we would not hesitate to work with them again."
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project

+75

Response time11 hrs
9 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for McCann Structural Solutions
McCann Structural Solutions
4.8(
5
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 1986

Emergency services offered

Small jobs welcome

"I've been fortunate to work with him for 20 years.He is an extremely qualified structural engineer and a competent individual! You can trust Mike to do a great job!!!"
Wall Removal Investigations
Snohomish Barn
Fire Damage repair
Structural Column Removal
Structural Column Removal

+7

Response time1 day
3 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for DesignWorks NW
DesignWorks NW
4.7(
12
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"The process working with Char to develop a set of design plans for my master suite addition has been fantastic. She has worked with me step by step, explaining the process at each point and what I can expect. She also listened to what I was looking for, drew up various designs, and then worked with me on modifications. She was a partner in the process the entire time, not only treating me with respect and professionalism, but talking through options and pros and cons with me so I ended up with the design I really wanted. Throughout the entire process I felt like I was in good and trustworthy hands. So much so that I will continue to use Char's assistance as I move forward on next steps with this project."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

1 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for KB Pro Design
KB Pro Design
4.9(
7
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Recently I had the opportunity to work with the guys from 3D Designs and Floorplans. My project was something very unusual, because I needed to build a clothes hanger rack in my new van for my mobile Dry Cleaning and alteration business. I draw myself some sketches and I explained what I want and they took over my project right away. Besides that I received the plan with all the measurements and details exact to a 1/16 in, Vasile , the drafter and 3D modeler created a full 3D image of the inside of the van with the rack mounted. When we decided with the welding company what material we are going to use and sizes, I sent Mr. Vasile all that and he adjusted everything for no extra charge. When the plan was done I received all the files with all the images and plans broken down to each section and precise sizes and measurements. One thing, the welding company thought was a joke and when I gave them the drafts and plans they just ignored the dimensions and rounded up some numbers so the frame of the rack came almost 1/2 in short. Guess what ? It did not match and fit where it supposed to be mounted, so they had to re do all over again to the exact sizes we had on the drafts. The welding technician and his supervisor said:" we never thought that 1/4 in can make such a difference" The experience I had with this company exceeded my expectations and the job was done 150%, top notch. Best affordable prices, no extra charges and great family like customer services. Now I rehired them again to work on my house plan and couple remodels we are planning to start soon, like ad two pergolas over front entrance and in the back over my deck, kitchen remodeling, and a plan for a new storage / working area shed. Amazing work, excellent prices and great ideas. I recommend this company to all my friends, and fellow veterans, since the company is managed by a veteran as well. Plus they do a great job on all VA plans to adjust your home to the disability needs."
Honda Dealership
Honda Dealership
Honda Dealership
Honda Dealership
Filson

+16

Response time7 hrs
Response rate89%
Recommended by100%of homeowners
Avatar for Refine Design Architecture
Refine Design Architecture
5.0(
8
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

Refine Design is a residential architecture firm specializing in custom homes, additions, and major renovations throughout the Seattle, Bellevue, Redmond, and Snohomish areas. We believe great homes begin with understanding the people who live in them. Our collaborative process keeps homeowners involved from the earliest concepts through permitting and construction-ready plans.\n\nEvery project is shaped by the client's lifestyle, goals, budget, and the unique opportunities of the site. We focus on creating meaningful spaces that capture views, bring people together, and enhance daily living. Through thoughtful planning and design, we help clients maximize the value of their investment while creating architecture that feels timeless, functional, and uniquely their own.

Exterior Perspective
Exterior Perspective
Floor Plan
Exterior Perspective
Entry Perspective

+56

Response time2 days
8 neighbors recently requested a quote
Recommended by14%of homeowners
Avatar for BT Engineers LLC
BT Engineers LLC
5.0(
3
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"BT Engineers LLC did the tenant improvement design for our new space, and they did an amazing job. Our permits were approved very quickly. They were responsive and helpful throughout the whole process! I would highly recommend them!"
Elevation
Structural Plan
V Elevation
Tree Strike
Response time7 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for Evolution Drafting
Evolution Drafting
3.4(
96
)

Serving Sammamish, WA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I hired them to create plans for an apartment building. The process was quick and painless. Cost was good. The plans are full complete abd ready to take to builders for quotes. I will definitly use them again."
Zeal Floor Plan
Charcoal
Palm Floor Plan
Charcoal Floor 2
Charcoal Floor 1

+23

Response time1 day
Response rate100%
56 neighbors recently requested a quote
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Structural Engineering questions, answered by experts

A structural engineer evaluates any structural components, like floors, foundations, walls, and roofs, to ensure they can support the structure. They also consider the soil quality in your area, potentially extreme weather conditions, and proximity to bodies of water and groundwater to ensure your building can withstand any stresses placed on it by the surrounding environment. Structural engineers work on both new and existing buildings.

On average, 6 inches of concrete can hold around 150 pounds per square foot, but the exact weight that 6 inches of concrete can hold depends on factors such as the type of concrete, the reinforcement method, soil conditions below, and structural design. If you’re concerned about the longevity of your concrete patio, walkway, or driveway, hire a professional to help you choose an appropriate concrete thickness and reinforcement method for your needs.

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.

Through detailed analysis of load paths, materials, and existing damages.

No, it’s not legal for unlicensed individuals to conduct structural calculations for buildings or building repairs. Not only do licensing requirements prevent DIYers from tackling this project, but mistakes can also be extremely dangerous and put your property and anyone inside or near it at risk of severe injury or even death. You should always hire a licensed and certified local structural engineer to make structural calculations.

The Sammamish, WA homeowners’ guide to structural engineering services

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