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TRUSTED BY MERCER ISLAND, WA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon46
    Verified structural engineering services reviews

Find Structural engineers in Mercer Island

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

Serving Mercer Island, 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
)
Draftsperson/CADDArchitect

Serving Mercer Island, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"It was a pleasure working with Johnson Custom Builders. Ryan was very professional, honest, and transparent. He studied the plans and specifications crafted by my architect in great depth and provided a detailed cost estimate. He also took the time to walk me through how the custom house build process will work and the expectations I should have. Overall a great experience for me working with Ryan."
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project

+75

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

Serving Mercer Island, 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
22 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for DesignWorks NW
DesignWorks NW
4.7(
12
)
ArchitectArchitect - For BusinessDraftsperson/CADD

Serving Mercer Island, 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

Recommended by90%of homeowners
Avatar for Revival Architecture and Design, LLC
Revival Architecture and Design, LLC
5.0(
10
)
ArchitectArchitect - For Business

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2018

Credit card accepted

Offers commercial services

"Josh has always been prompt and communicative with every interaction we've had. I initially got in touch with him about new construction design questions, and when we discovered that our current home porch posts had rotted through due to faulty design by the original home designer, Josh jumped into action. He had his engineer and construction crew to our door within 24 hours to take a look and put together a plan. He took my design ideas and brought them to life. He was transparent about all parts of the cost (to include his profit), and gave us to option to lower the cost by hauling away debris and painting the porch (which we were more than willing to do). Any delays with the work were met with a phone call and followup email if he didn't get through to either my husband or I immediately, and the construction crew did very high quality work. We were beyond pleased with his customer service! We will definitely use Revival Home Designs in the future when we decide to build our forever home."
Apartments - Chehalis, WA
Front
Rear
Cashmere Mixed Use
Exterior Option 2 Alternate Design

+1

Response time2 days
12 neighbors recently requested a quote
Recommended by22%of homeowners
Avatar for BT Engineers LLC
BT Engineers LLC
5.0(
3
)
Engineer - StructuralDraftsperson/CADD

Serving Mercer Island, 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%
7 neighbors recently requested a quote
Avatar for Outdraft, LLC
Outdraft, LLC
5.0(
4
)
Draftsperson/CADDEngineer - Structural

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"We hired OutDraft to design a set of plans for us for a deck project. OutDraft did a fantastic job! The plans were professionally drawn and passed through the city without any issues."
Response time10 hrs
Response rate100%
10 neighbors recently requested a quote
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Structural Engineering questions, answered by experts

Although the two terms are closely related and often used interchangeably, pier and beam foundations and crawl spaces are different things. A pier and beam foundation is made up of concrete piers and wooden beams and creates a space under the home known as a crawl space. There are several types of foundations that create crawl spaces, often collectively known as “crawl space foundations,” but the crawl space itself is separate from the foundation. 

A split-level home is one that has several staggered floors connected by short staircases, while a split floor plan separates the primary bedroom from the rest of the bedrooms. Split floor plans are most often found in single-story homes, while split-level homes are always at least two stories.

First, most contractors will have a structural engineer create a report and plan for your project to ensure it’s safe to cut into the load-bearing wall. The contractor will then excavate around the wall, if necessary, measure the opening—allowing for additional space to fit and level the door, and then cut the doorway out. They will likely install a steel lintel as a header over the door for support. Once the doorway is cut out, they’ll demolish the concrete using sledge hammers and masonry chisels, clean up the surrounding concrete, and seal around the door with masonry mortar. 

A 4-inch-thick concrete slab can support around 4,000 pounds per square foot if a contractor reinforces the slab with rebar, while that same slab without reinforcements will support closer to 1,000 pounds. For the purposes of a patio, 4 inches in thickness without reinforcement should suffice unless you’re installing heavy kitchen equipment or a hot tub on it. In those cases, reinforcing your slab and sticking with 4 inches of thickness should provide plenty of strength.

Most structural engineers offer free quotes, regardless of the size of the job. For simple inspections when buying or selling a home, engineers typically charge a flat fee that may be based solely on your home’s foundation type and square footage. For larger projects, like new construction and major home renovations, an engineer will either perform an analysis of your project and site and provide you with a formal estimate, or they will do a more in-depth assessment and in-person site inspection before coming up with a per-hour or per-project cost estimate. In most cases, the estimate is free.

The Mercer Island, WA homeowners’ guide to structural engineering services

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