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TRUSTED BY ALLYN, WA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon47
    Verified structural engineering services reviews

Find Structural engineers in Allyn

Avatar for Groundworks

Groundworks

4.44(
162
)
Approved Pro

Groundworks

4.44(
162
)
Approved Pro
Customers say: Super punctual
42 local quotes requested
28 years of experience

Groundworks, formerly, Matvey Foundation Repair is the leading structural and concrete repair firm in Western Washington. We specialize in repairing residential and commercial foundations, concrete slabs, bowing/cracked basement walls, sinking floors, concrete porches, settling/cracked foundations, and other structural issues. We raise and level concrete pavements, driveways, and sidewalks. We also offer basement waterproofing. Our expert design technicians provide professional services for commercial, residential, industrial, government, and municipal applications with award-winning products and superior customer service. CALL US TODAY FOR A FREE ESTIMATE! GROUN**76305

"Very informative. Clear and concise. Gave us many options. Daniel is a wonderful and honest person and was so helpful with our questions. The crew lead by Anthony, with Jordan, Uriel, and Richard did professional work. The finished product is wonderful and can already feel the results in the house. Would 1000% recommend. Just keep in mind it is a very messy job. These guys do the best they can to keep it clean"

Charles W on May 2025

Groundworks, formerly, Matvey Foundation Repair is the leading structural and concrete repair firm in Western Washington. We specialize in repairing residential and commercial foundations, concrete slabs, bowing/cracked basement walls, sinking floors, concrete porches, settling/cracked foundations, and other structural issues. We raise and level concrete pavements, driveways, and sidewalks. We also offer basement waterproofing. Our expert design technicians provide professional services for commercial, residential, industrial, government, and municipal applications with award-winning products and superior customer service. CALL US TODAY FOR A FREE ESTIMATE! GROUN**76305

"Very informative. Clear and concise. Gave us many options. Daniel is a wonderful and honest person and was so helpful with our questions. The crew lead by Anthony, with Jordan, Uriel, and Richard did professional work. The finished product is wonderful and can already feel the results in the house. Would 1000% recommend. Just keep in mind it is a very messy job. These guys do the best they can to keep it clean"

Charles W on May 2025


Washington Engineering

4.07(
29
)
Approved Pro

Washington Engineering

4.07(
29
)
Approved Pro
38 local quotes requested
18 years of experience

Washington Engineering has been serving the greater western Washington area since 1996. We specialize in residential engineering, building design and home energy evaluations. There is no project too big or too small.

"job not done yet"

Andrea H on November 2025

Washington Engineering has been serving the greater western Washington area since 1996. We specialize in residential engineering, building design and home energy evaluations. There is no project too big or too small.

"job not done yet"

Andrea H on November 2025



Cascadian Structural Engineering llc

No reviews yet

Cascadian Structural Engineering llc

No reviews yet
4 years of experience

Cascadian Structural Engineering LLC offers structural engineering design and evaluation services. We specialize in residential and light commercial projects including new construction, alterations/additions, and evaluation of existing structures. We work directly with architects, building owners, homeowners, developers, and contractors to provide practical project specific solutions. Our service area includes the Puget Sound region and beyond.

Cascadian Structural Engineering LLC offers structural engineering design and evaluation services. We specialize in residential and light commercial projects including new construction, alterations/additions, and evaluation of existing structures. We work directly with architects, building owners, homeowners, developers, and contractors to provide practical project specific solutions. Our service area includes the Puget Sound region and beyond.




JP Jones Engineering

5.00(
2
)

JP Jones Engineering

5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

JP Jones Engineering is a small structural engineering firm located out of Tacoma, WA providing structural design for homeowners, contractors, and architects. Structural services provided are for residential remodels, bearing wall determination/removal, additions, new residences, and light commercial design. Jordan Jones is a fully licensed Professional Engineer (P.E.) in Washington state specializing in structures. He has been a Tacoma local his entire life and enjoys gardening and spending time with his wife and two toddlers in his free time.

"Fast and efficient."

David S on January 2021

JP Jones Engineering is a small structural engineering firm located out of Tacoma, WA providing structural design for homeowners, contractors, and architects. Structural services provided are for residential remodels, bearing wall determination/removal, additions, new residences, and light commercial design. Jordan Jones is a fully licensed Professional Engineer (P.E.) in Washington state specializing in structures. He has been a Tacoma local his entire life and enjoys gardening and spending time with his wife and two toddlers in his free time.

"Fast and efficient."

David S on January 2021


MagnaDrive Corporation

No reviews yet

MagnaDrive Corporation

No reviews yet

MagnaDrive couplings and Adjustable Speed Drives replace the physical connection between motor and load with a gap of air. This air gap eliminates harmful vibration, wear and tear, enhances energy efficiency, increases motor life and protects equipment from overload damage.

MagnaDrive couplings and Adjustable Speed Drives replace the physical connection between motor and load with a gap of air. This air gap eliminates harmful vibration, wear and tear, enhances energy efficiency, increases motor life and protects equipment from overload damage.


IBSC Inc dba USA Realty

No reviews yet

IBSC Inc dba USA Realty

No reviews yet
50 years of experience

IBSC Inc dba USA Realty has been in business for 40+ years helping individuals with their Residential / Commercial real estate needs. Steve & Melo Hogan are a few of our top notch real estate brokers who always go the extra mile to complete the task at hand.

IBSC Inc dba USA Realty has been in business for 40+ years helping individuals with their Residential / Commercial real estate needs. Steve & Melo Hogan are a few of our top notch real estate brokers who always go the extra mile to complete the task at hand.


Wolf Design & Consultin

No reviews yet

Wolf Design & Consultin

No reviews yet
38 years of experience

We are a full service from remodel and restoration, to new construction design and build. We have a variety of contractors and tradesmen we work with to satisfy any needs. We are experienced in Residential, Commercial, and Industrial design and construction.

We are a full service from remodel and restoration, to new construction design and build. We have a variety of contractors and tradesmen we work with to satisfy any needs. We are experienced in Residential, Commercial, and Industrial design and construction.

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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.

Yes, unresolved damage can decrease property integrity and market value.

Provides expert analysis, ensuring safety and compliance with building codes.

Structural engineers typically conduct inspections during a home sale or renovation, looking for signs of structural damage in various structures throughout the building, such as load-bearing walls, joists, beams, roofing trusses, foundations, and chimneys. Some of the warning signs that structural engineers check for include:

  • Dry rot

  • Infestation

  • Shifting or cracking foundations

  • Erosion

  • Water damage

  • Sagging, shifting, or damaged walls, ceilings, or roofing support

Costs depend on furniture type, size, complexity, and whether additional modifications are needed.

The Allyn, WA homeowners’ guide to structural engineering services

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