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TRUSTED BY DES MOINES, WA HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon24
    Verified structural engineering services reviews

Verified Reviews for Structural Engineering pros in Des Moines, WA

*The Angi rating for Structural Engineering companies in Des Moines, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.

*The HomeAdvisor rating for Structural Engineering companies in Des Moines, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.

Last update on February 21, 2026

Find Structural engineers in Des Moines

Avatar for Consulting Structural Engineering Services, Inc. (CSES)
Consulting Structural Engineering Services, Inc. (CSES)
4.1(
86
)

Serving Des Moines, WA and surrounding areas

Approved

In business since 1992

Free estimates

Small jobs welcome

"John came out and looked at several issues, determined them to be cosmetic not structural and wrote a certified letter to that effect. We got great peace of mind from his visit."
broken deck
Structural assessment
Structural assessment
Structural assessment
Structural assessment

+8

Response time1 day
45 neighbors recently requested a quote
Recommended by89%of homeowners
Request Quote
Avatar for McCann Structural Solutions
McCann Structural Solutions
4.8(
5
)

Serving Des Moines, WA and surrounding areas

Approved

In business since 1986

Emergency services offered

Small jobs welcome

"Mr. McCann came out to assess the water and carpenter ant damage to a wall and foundation sill plate of our home. He was able to quickly evaluate the problem area and provide the structural engineering report and repair task list we needed to get contractor bids on the reconstruction project. Highly recommended."
Wall Removal Investigations
Snohomish Barn
Fire Damage repair
Structural Column Removal
Structural Column Removal

+7

Response time1 day
1 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Refine Design Architecture
Refine Design Architecture
5.0(
8
)

Serving Des Moines, 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
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Avatar for Evolution Drafting
Evolution Drafting
3.4(
94
)

Serving Des Moines, 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
Request Quote
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Structural Engineering questions, answered by experts

Building codes for spiral staircases will vary by your location. Most local codes will specify minimum tread width, riser height, handrail requirements, and headroom. These standards help ensure safety and accessibility for all users. Always check local codes before you begin the installation to ensure compliance and avoid costly modifications or fines.

Precast concrete can be reinforced with rebar, wire mesh, or other materials to improve its strength and add stability. Precast concrete for large construction projects is often pre-stressed as well for greater structural strength. Reinforced concrete is durable and strong, making it an ideal choice for many construction projects.

The depth of any foundation style depends on your climate and how deep the frost line is, as building code requires that the footers of a foundation—which are built into a monolithic slab—sit at least a foot below the frost line. At the southern tip of Florida, for example, a monolithic slab foundation would only need to sit 12 inches under the soil at the widest parts. On some parts of the Canadian border, the frost line is 100 inches, which would mean a minimum of 112 inches, which is prohibitively deep for a monolithic slab.

Structural engineers can perform various inspections on different structures in your home. These inspections usually include a report detailing the engineer’s findings and recommendations for repairs so you can determine your next course of action for repairs, replacements, or new builds. Some of the most common structural engineering reports include:

  • Full home inspection: $350–$1,000

  • Foundation: $300–$800

  • Load-bearing walls: $300–$1,000

  • Roof: $150–$600

  • Chimney: $200–$500

You need to hire a structural engineer when building or modifying any component with a structural load in your home. Common situations where you would need a structural engineer include home inspections when buying or selling a home, investigating possible issues with your foundation, beams, load-bearing walls, or chimneys, breaking ground on a new home or structure on your property, and renovating an old part of your home that could threaten any structural integrity. Home additions and bump-outs also require an engineer.

The Des Moines, WA homeowners’ guide to structural engineering services

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