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TRUSTED BY MANASSAS, VA HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon36
    Verified structural engineering services reviews

Find Structural engineers in Manassas

Kamran Ohi P E
4.8(
177
)

Serving Manassas, VA and surrounding areas

Approved

In business since 1978

Emergency services offered

Small jobs welcome

"Kamran dd a fantastic job. He reached out to me quickly and had his associate come by to look at the walls I was removing. I received an estimate for the work. Kamran worked extra long on the project to help me utilize the beams that I had pre purchased. I would recommend anyone who need a professional engineer recommendation to use OHI engineering"
2 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Structurist Consulting Engineers
Structurist Consulting Engineers
4.7(
22
)

Serving Manassas, VA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"I would highly recommend working with Structurist Consulting. They were responsive, readily available, gave more time than anticipated on a complicated structural examination and most importantly, really nice."
Stair and foundations
Deck Plan
Segmented Retaining wall with Geogrids
Custom Build home
Response time4 hrs
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Willoughby Design, LLC
Willoughby Design, LLC
5.0(
14
)

Serving Manassas, VA and surrounding areas

Approved

In business since 2013

Free estimates

Offers commercial services

"We have been working with Todd Willoughby since early in 2018. We had purchased a piece of land along the Chesapeake Bay and wanted to build a small but thoughtfully designed contemporary garden cottage for our retirement. After speaking with a number of architects we chose Todd and we have been very happy with that decision. Over several months, we worked have closely with him through the several design phases, culminating in a very complete set of construction documents, that we are now using for bidding. Throughout the process, we have found Todd to be personable, smart, perceptive and creative. He has been able to translate our ideas into working drawings that one of the contractors noted was called the most detailed he has ever seen. Todd has captured our vision for an environmentally friendly house with solar and rainwater harvesting. We have met with him many times talk through the many details, choices, and constraints you inevitably face. He has done all the coordination needed with the other specialties the engineers, surveyor, and solar energy firm. Having enjoyed this first part of the collaboration, we are hiring Todd to help us through the bid evaluations and construction admin phases. The best recommendation would be our actual house, but until we get there we can say Todd has done an excellent and professional job getting us this far, and we look forward to working with him through to a completed project."
Eagle's Nest
Eagle's Nest
Eagle's Nest
Eagle's Nest
Eagle's Nest

+12

Response time2 days
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Evolution Drafting
Evolution Drafting
3.6(
116
)

Serving Manassas, VA 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
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Structural Engineering questions, answered by experts

In Manassas, address structural engineering projects right away if you notice foundation cracks, shifting walls, water intrusion, or sagging floors—these can worsen quickly, especially with the region’s clay soil and seasonal storms. Less urgent projects, such as routine assessments or minor deck reinforcement, can typically wait up to a year. Always consider local weather patterns, as freeze-thaw cycles may accelerate existing foundation issues.

Helpful?

In Manassas, consider scheduling a structural engineering assessment every 15–25 years, or sooner if your home is older, you’re planning renovations, or you’ve experienced severe weather. Spring is ideal for checking foundations due to moisture changes, while fall works well for larger renovations. If you’re buying, selling, or filing an insurance claim, a timely professional evaluation is highly recommended.

Helpful?

Structural engineering work in Manassas often impacts HVAC, plumbing, and electrical systems. Foundation repairs can shift plumbing lines, while new supports may require rerouting ductwork or wiring. Homes with septic or well systems might need additional adjustments. Before starting, consult with local professionals to ensure all systems—especially those behind walls or under floors—remain safe and fully functional after the project.

Helpful?

After finishing structural engineering work in Manassas, schedule a final inspection and keep all project documentation. Notify your insurance provider about the completed repairs. Over the next six months, monitor for new cracks, uneven settling, or water issues. Confirm that HVAC, plumbing, and electrical systems are operating correctly. Maintain drainage and waterproofing, and plan for annual inspections to catch potential problems early.

Helpful?

In Manassas, if you spot new cracks, sticking doors or windows, or uneven floors within a year or two of past repairs, it may signal that previous structural engineering work was insufficient. Recurring water intrusion, missing inspection records, or work completed without a licensed VA professional are also warning signs. Any new vibrations or shifting after recent projects should prompt a professional evaluation.

Helpful?

The Manassas, VA homeowners’ guide to structural engineering services

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