Introduction
Hiring a Structural Engineer in Seattle is rarely a “nice-to-have.” In a city with seismic risk, varied soil conditions, steep sites, and a steady stream of remodels and multi-family construction, structural decisions directly affect safety, permitting, timelines, and cost.
This guide is built for homeowners, architects, developers, and property managers who want a practical shortlist of reputable options—plus a clear way to compare services, pricing expectations, and next steps.
We evaluated firms using publicly available signals when known (such as established presence, visible project portfolios, and clear service offerings). Where ratings, years, or review summaries weren’t confidently verifiable from public sources, we mark them as Not publicly stated rather than guessing.
About Structural Engineer
A Structural Engineer designs and evaluates the “bones” of a structure—how loads move through beams, columns, slabs, walls, and foundations down into the ground. They help ensure buildings and other structures can safely resist gravity loads, wind, and (especially in Seattle) earthquake forces.
You may need a Structural Engineer when you’re altering load-bearing components, adding square footage, changing roof lines, cutting new openings, noticing foundation movement, or pursuing permits that require stamped structural calculations and drawings.
Average cost in Seattle: Varies widely by project size and complexity. For many residential needs (site visit + letter or basic calculations), budgets often start in the high hundreds to a few thousand dollars, while full design for additions/ADUs/retrofits can run several thousand to five figures. Commercial work is typically quoted per scope and can be significantly higher. Exact pricing is Varies / depends.
Licensing/certifications: In Washington State, structural engineering work is typically performed under a Professional Engineer (PE) license (and in some cases an SE credential may be relevant). Requirements depend on the project, jurisdiction, and code triggers. Always confirm the engineer signing/sealing documents is properly licensed for Washington.
Key takeaways
- Structural engineers handle safety-critical design and evaluation for buildings and major structural elements.
- You’ll commonly need one for permits, remodels affecting load-bearing walls, foundation concerns, or seismic retrofit work.
- Costs are highly scope-driven; clear drawings, site access, and existing plans can reduce fees.
- Confirm Washington licensure and ask what deliverables you’ll receive (letter, calculations, stamped plans, construction support).
How We Selected the Best Structural Engineer in Seattle
We used a practical, consumer-focused set of criteria:
- Years of experience (when publicly stated)
- Verified customer review signals (publicly available only, when confidently known)
- Service range (residential, commercial, retrofit, existing building evaluation, etc.)
- Pricing transparency (clear scope language, typical fee structures, willingness to explain options)
- Local reputation (known presence in the Seattle market, visible portfolio, community/industry recognition)
This list relies on information that is publicly available and confidently attributable to each firm. If a detail (like a direct phone number for a specific office or a review summary) could not be verified with confidence, it’s marked Not publicly stated.
About Seattle
Seattle is a dense, fast-growing city with a mix of historic homes, hillside neighborhoods, waterfront conditions, and major commercial development. Structural engineering demand is consistently high due to remodel activity, ADUs/DADUs, tenant improvements, seismic considerations, and the region’s complex geotechnical conditions.
Many projects also require coordination with local permitting and inspection workflows (often through the City of Seattle’s construction and land-use processes), making local experience valuable.
Key neighborhoods commonly served
- Ballard
- Fremont
- Green Lake
- Capitol Hill
- Queen Anne
- Magnolia
- West Seattle
- Beacon Hill
- Rainier Valley
- University District
- Downtown / South Lake Union
- Northgate
Top 5 Best Structural Engineer in Seattle
#1 — Magnusson Klemencic Associates (MKA)
- Rating: Not publicly stated
- Years of Experience: Not publicly stated
- Services Offered: Structural engineering for buildings and complex structures; design and analysis for new construction and existing building work (scope varies / depends)
- Price Range: Varies / depends (project-based)
- Contact Phone: Not publicly stated
- Contact Email (if available): Not publicly stated
- Website (if available): https://www.mka.com
- Google Map or ProfessNow or Yelp Link:
- Google Reviews Summary: Not publicly stated
- Best For (Budget / Emergency / Premium / Family-Friendly / etc.): Premium / Complex commercial projects
#2 — KPFF Consulting Engineers (Seattle)
- Rating: Not publicly stated
- Years of Experience: Not publicly stated
- Services Offered: Structural engineering services for a range of building types; coordination with multidisciplinary teams (scope varies / depends)
- Price Range: Varies / depends (project-based)
- Contact Phone: Not publicly stated
- Contact Email (if available): Not publicly stated
- Website (if available): https://www.kpff.com
- Google Map or ProfessNow or Yelp Link:
- Google Reviews Summary: Not publicly stated
- Best For (Budget / Emergency / Premium / Family-Friendly / etc.): Commercial + larger residential/mixed-use teams needing depth
#3 — DCI Engineers
- Rating: Not publicly stated
- Years of Experience: Not publicly stated
- Services Offered: Structural design and consulting for buildings; support for new construction and existing structures (scope varies / depends)
- Price Range: Varies / depends (project-based)
- Contact Phone: Not publicly stated
- Contact Email (if available): Not publicly stated
- Website (if available): https://www.dciengineers.com
- Google Map or ProfessNow or Yelp Link:
- Google Reviews Summary: Not publicly stated
- Best For (Budget / Emergency / Premium / Family-Friendly / etc.): Mid-to-large projects needing an established regional firm
#4 — Coughlin Porter Lundeen (CPL)
- Rating: Not publicly stated
- Years of Experience: Not publicly stated
- Services Offered: Structural engineering for buildings; design and consulting for a wide range of project types (scope varies / depends)
- Price Range: Varies / depends (project-based)
- Contact Phone: Not publicly stated
- Contact Email (if available): Not publicly stated
- Website (if available): https://www.cplinc.com
- Google Map or ProfessNow or Yelp Link:
- Google Reviews Summary: Not publicly stated
- Best For (Budget / Emergency / Premium / Family-Friendly / etc.): Full-service project teams (architect/GC/developer coordination)
#5 — SWA Structural Engineers
- Rating: Not publicly stated
- Years of Experience: Not publicly stated
- Services Offered: Structural engineering design and consulting for buildings (scope varies / depends)
- Price Range: Varies / depends (project-based)
- Contact Phone: Not publicly stated
- Contact Email (if available): Not publicly stated
- Website (if available): https://www.swastructural.com
- Google Map or ProfessNow or Yelp Link:
- Google Reviews Summary: Not publicly stated
- Best For (Budget / Emergency / Premium / Family-Friendly / etc.): Design-forward projects and collaborative teams (varies / depends)
Comparison Table
| Professional | Rating | Experience | Price Range | Best For |
|---|---|---|---|---|
| Magnusson Klemencic Associates (MKA) | Not publicly stated | Not publicly stated | Varies / depends | Premium / Complex commercial projects |
| KPFF Consulting Engineers (Seattle) | Not publicly stated | Not publicly stated | Varies / depends | Commercial + larger residential/mixed-use teams |
| DCI Engineers | Not publicly stated | Not publicly stated | Varies / depends | Established regional firm for mid-to-large projects |
| Coughlin Porter Lundeen (CPL) | Not publicly stated | Not publicly stated | Varies / depends | Full-service coordination with project stakeholders |
| SWA Structural Engineers | Not publicly stated | Not publicly stated | Varies / depends | Collaborative, design-forward project teams |
Cost of Hiring a Structural Engineer in Seattle
Structural engineering fees in Seattle typically fall into two common models: a fixed fee tied to a defined deliverable (site visit + letter, or a stamped drawing set), or an hourly/billing rate arrangement when scope is uncertain (investigations, phased remodels, construction support).
Average price range (typical scenarios)
- Basic site visit + written findings/letter: often high hundreds to a few thousand dollars (Varies / depends)
- Single-beam/load-bearing wall removal design: often a few thousand dollars (Varies / depends)
- Addition/ADU structural design + permit set support: commonly several thousand to five figures (Varies / depends)
- Commercial tenant improvements or new buildings: frequently five figures and up, depending on size and complexity (Varies / depends)
Emergency pricing (if applicable): Some firms may offer expedited turnaround for an added fee, but 24/7 emergency response is Not publicly stated for the firms listed above. For urgent safety concerns (e.g., sudden structural movement), response time and fees depend on availability.
What affects cost
- Project complexity (multi-story, irregular layouts, large openings, long spans)
- Seismic design requirements and risk category
- Site conditions (slopes, poor soils, waterfront proximity) and coordination with geotechnical findings
- Availability/quality of existing drawings and prior permit history
- Number of revisions due to changing architectural plans
- Construction-phase services (RFIs, site visits, contractor coordination, special details)
If you want a faster, cleaner quote, prepare a short package: address, photos, sketches, goals, timeline, and any existing plans or inspection notes.
Frequently Asked Questions (FAQ)
How much does a Structural Engineer cost in Seattle?
Most Seattle projects are quoted by scope, not a flat menu price. Small evaluations can start in the high hundreds to a few thousand dollars, while remodel designs and additions often run several thousand to five figures. Exact cost varies by complexity and deliverables.
How to choose the best Structural Engineer in Seattle?
Start with fit: residential remodel vs. commercial new build vs. retrofit. Ask what deliverables you’ll receive (letter, calculations, stamped plans), confirm Washington licensure, and request a clear scope with assumptions and revision limits.
Are licenses required in Seattle?
For most structural design and stamped documents, the responsible engineer must be licensed in Washington State (typically PE; SE may apply for certain structures). Requirements can depend on the building type and jurisdiction.
Do I need a Structural Engineer for a load-bearing wall removal?
Often, yes. If a wall is load-bearing (or you’re not sure), a structural engineer typically designs the replacement beam/post sizing, connections, and any foundation upgrades needed for permit and safety.
Can a Structural Engineer help with foundation cracks or settling?
Yes. Many engineers evaluate cracking patterns, movement indicators, and contributing factors (drainage, soils, loads) and then recommend repairs or monitoring steps. If geotechnical input is needed, they may coordinate or recommend a soils professional.
Who offers 24/7 service in Seattle?
Not publicly stated. Many structural engineering firms operate during business hours and may offer expedited scheduling for urgent situations depending on workload. If safety is an immediate concern, secure the site and contact local emergency services as appropriate.
How long does it take to get structural drawings for a Seattle permit?
Timelines vary by firm availability and project complexity. Simple beam designs may be quicker; full remodel/addition sets take longer—especially with multiple design iterations. Expect scheduling lead times during peak building season.
What should I prepare before calling a Structural Engineer?
Have the property address, project goals, photos, rough dimensions, and any existing plans or inspection reports. If you have an architect’s drawings, share the latest version to reduce redesign and cost.
Will the Structural Engineer coordinate with my architect and contractor?
Often, yes—especially on permitted remodels and new construction. Clarify whether construction support (RFIs, site visits, revisions) is included in the fee or billed separately.
What’s the difference between a structural inspection and a full design?
An inspection/evaluation usually results in findings and recommendations (sometimes a letter). Full design includes calculations and stamped drawings/details suitable for permitting and construction, plus potential construction-phase support.
Final Recommendation
If you’re planning a commercial building, high-rise, or complex structural scope, start with firms known for deep technical resources and large-project coordination, such as Magnusson Klemencic Associates (MKA) or KPFF Consulting Engineers (fit depends on your project type and team).
For mid-to-large projects where you want an established regional presence and broad building experience, DCI Engineers and Coughlin Porter Lundeen (CPL) are strong options to evaluate.
If your project is design-forward and collaboration-heavy (architect-led, detail-sensitive), SWA Structural Engineers may be a good fit to discuss—confirm scope, scheduling, and deliverables early.
For budget-sensitive residential work, the best path is usually to request a tightly defined scope (site visit + letter vs. full stamped plans) and ask what information you can provide to reduce billable back-and-forth.
Get Your Business Listed
If you’re a Structural Engineer in Seattle and want your details added or updated in this guide, email contact@professnow.com. You can also registe & Update yourself at https://professnow.com/.