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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
)

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
)

Serving Mercer Island, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"This project went very smoothly and we were extremely impressed with Ryan and his crews. He was always great at communicating with us about the schedule and answering all our questions. I was greatly impressed with his attention to detail and the level of quality with everything from the tile installation to the lighting and electrical work. I would highly recommend Johnson Custom Building for their remodel/home upgrade needs. We definitely plan on using their services again for our next remodeling project."
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project

+75

Response time11 hrs
4 neighbors recently requested a quote
Recommended by92%of homeowners
Design Build NW, LLC
5.0(
5
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

At Design Build - Home Plans NW service is our number number one priority. We offer a complete process from Plans to Paint, end-to-end design, planning, and if desired construction of your home addition, custom or remodel. Do you just need plans drawn up to meet permitting standards? We can help in whole or in part.\n\nThere are two phases to a project, Soft Cost and Hard Cost. \n\nSoft Cost is the design process. Everything required to obtain a Building Permit, Survey, Engineering Inspection & Civil Engineering, As-Built, Design & Architectural, Permit coordination, etc. \n\nHard Cost is construction. Construction is made up of labor and materials. This includes, Demolition, Excavation, Foundation, Framing, Windows, Siding, Roofing, Electrical, Plumbing, HVAC, Insulation, and all the finish work. \n\nCall us to bring your dream into reality.

Construction
Framing Materials
Rear of Home
Master Bedroom
Rear of Home

+40

Response time1 day
Response rate97%
13 neighbors recently requested a quote
Avatar for McCann Structural Solutions
McCann Structural Solutions
4.8(
5
)

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
16 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for DesignWorks NW
DesignWorks NW
4.7(
12
)

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(
9
)

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
14 neighbors recently requested a quote
Recommended by25%of homeowners
Avatar for Refine Design Architecture
Refine Design Architecture
5.0(
8
)

Serving Mercer Island, 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
Response rate100%
14 neighbors recently requested a quote
Avatar for Evolution Drafting
Evolution Drafting
3.6(
116
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Evolution Drafting did a great job modifying my existing plans and updating for Arizona codes and took care of the structural engineering as well."
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
Avatar for BT Engineers LLC
BT Engineers LLC
5.0(
3
)

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%
3 neighbors recently requested a quote
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Structural Engineering questions, answered by experts

Yes, all states require structural engineers to carry the proper license, with specifics determined by each state. You can use Angi’s state licensing tool to confirm that the structural engineer you’re considering holds the required licensing to tackle your job. Hiring an unlicensed structural engineer will not only cause issues with permits but it could also lead to an unsafe building. The cost of a professional, licensed, and experienced engineer is well worth the investment.

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.

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)

Structural engineers draw structural plans, which include detailed drawings of the structural components of a home only. Complete house plans will require additional work from an architect or draftsperson, whose drawings will take the structural drawings into account. They’ll also include more details about the finishing materials and layout of a home, including everything from roofing and flooring materials to the position of furniture, light fixtures, switches, and plumbing fixtures.

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.