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Send us your plans
Upload the house plans you bought or had designed. We review them and reply with a firm quote and timeline - no surprises.
You bought the plans. Now you need an engineer.
That's normal — and it's good news. We engineer your house plans into a permit-ready structural design, right-sizing every beam and footing so your home costs less to build and is built to last, without the cracks, squeaks, and sagging floors that show up years down the road.
★★★★★ 110 Google reviews · 3,500+ sealed engineering documents · Licensed in 7 states · Permit Guarantee
"Wait — I need an engineer?"
Yes — and it's a good thing. A house plan shows what your home looks like. Structural engineering makes sure it stands up to gravity, wind, and time — and gets it through permitting. And a quality engineer sharpens their pencil to reduce the cost to construct your home: we have a great track record of saving more on construction than our fee costs, making us an effectively free service. Here's how it works:
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We engineer your home
Foundation, framing, beams, and load paths - designed for your lot, your soil, and your local code, then sealed by a licensed PE. Typical turnaround: about two weeks.
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You build with confidence
Permit-ready drawings your builder can actually follow - engineered efficiently, so you don’t pay for lumber and concrete you don’t need. If the county has comments on our work, we revise them free under our Permit Guarantee.
How we can help
New home structural design
The heart of what we do. We take the plans you bought — stock, designer, or custom — and produce complete structural drawings from foundation through roof, engineered for your lot and your local code. Homeowners and builders welcome.
Free plan review →Remodels, additions & ADUs
Removing a wall? Adding a room or an ADU? We design the structure that makes it safe and permittable — sized for your actual house, not a worst-case guess.
Learn more →Structural inspections
Cracks, slopes, storm damage, or something that just doesn't look right — get a forensic evaluation from an engineer with courtroom expert-witness experience. Serving the Raleigh area.
Request an inspection →
Our Permit Guarantee
If the county has comments on our work, we fix them. Free. Until they clear.
Plan review may take more than one round. When it does, your engineer should still be there, and it should not cost you more. Unlimited structural revisions, direct contact with the reviewer, and one PE from start to finish — written into every Oakline agreement.
Read the guarantee →What homeowners say
★★★★★ 5.0 on Google · 110 reviews
Building or fixing a house is stressful enough. Our clients consistently say the same things: fast answers, plain English, and an engineer who treats your house like it matters — because it does.
Read our Google reviews
★★★★★
Excellent engineering services! Cody was professional, reliable, and extremely responsive throughout the entire process. He provided a quick turnaround, communicated clearly, and made everything simple and stress-free. His attention to detail and professionalism were outstanding. I highly recommend Cody to anyone looking for a dependable and knowledgeable engineer!
Eber Cobos· in the last week · via Google
★★★★★
I needed a structural engineer for a major residential renovation. After submitting an online inquiry with Oakline, I got a really quick response back from Cody. He was able to set up a consultation with me and walk me through every step of the process to make sure we had a safe, structurally sound project! He was very patient with me as we had to make some adjustments on the fly to the original plan. He was able to shift gears quickly on the design and provide an alternative that would still produce an amazing end result. The report provided was everything needed down to the size of nails to use. Extremely thorough and would highly recommend for anyone that needs structural engineering services!
Chris Fleming· 3 months ago · via Google
★★★★★
If you're thinking about calling Oakline, just do it. You won't be disappointed. I had the pleasure of working with Mr. Johnston for my backyard tiny home-style home office, and frankly if he wasn't involved, the project wouldn't have happened at all. As a tech worker with minimal experience in the architectural design and construction industry, his advice and feedback on the structural and architectural plans drastically reduced the overall cost while increasing the buildings structural integrity. In addition to providing modified stamped-and-sealed plans which were accepted by the county without issue, he also assisted with additional guidance and documentation for my GC and the concrete subcontractors to ensure inspections passed. Cody Johnston offers a premium, white-glove service at a price that the larger firms in the area can't compete with. He also actually picks up the phone, which the dozen or so other firms I called were apparently incapable of doing. He possesses a great deal of experience, phenomenal communication skills, and a friendly disposition that absolves any doubt that the project will be seen to completion. My GC has had a great experience working with him, and will likely use him in the future as well. 10/10 all around. Thank you, Cody!
James L· 2 months ago · via Google
★★★★★
Cody was awesome. We did a virtual consult, and I was initially skeptical, but my project was straightforward enough to forego an in-person visit. After sending my reno plans and sharing some pictures of the area being renovated, Cody was able to outline the necessary specs to ensure proper beam and header needs for safe load bearing of the new structure. Had no issues getting my permit after sharing Cody's specs with the city. Smooth and easy process. Highly recommend!
Duane Smith· 4 months ago · via Google
★★★★★
An awesome experience with Cody at Oakline Structural Engineering; I phoned for an informal consultation on concerns about our new home build, and Cody took the time to listen, assess, and advise… delivering peace of mind and putting our concerns to rest. His willingness to spend his valuable time on a complimentary consultation with me was totally unexpected. Finding such helpful, honest folks can be a challenge these days, and so I wholeheartedly recommend Cody and Oakline Structural Engineering for such professionalism and attentiveness. Thanks Cody!
Phillip Chudoba· 4 months ago · via Google
★★★★★
Excellent engineering services! Cody was professional, reliable, and extremely responsive throughout the entire process. He provided a quick turnaround, communicated clearly, and made everything simple and stress-free. His attention to detail and professionalism were outstanding. I highly recommend Cody to anyone looking for a dependable and knowledgeable engineer!
Eber Cobos· in the last week · via Google
★★★★★
I needed a structural engineer for a major residential renovation. After submitting an online inquiry with Oakline, I got a really quick response back from Cody. He was able to set up a consultation with me and walk me through every step of the process to make sure we had a safe, structurally sound project! He was very patient with me as we had to make some adjustments on the fly to the original plan. He was able to shift gears quickly on the design and provide an alternative that would still produce an amazing end result. The report provided was everything needed down to the size of nails to use. Extremely thorough and would highly recommend for anyone that needs structural engineering services!
Chris Fleming· 3 months ago · via Google
★★★★★
If you're thinking about calling Oakline, just do it. You won't be disappointed. I had the pleasure of working with Mr. Johnston for my backyard tiny home-style home office, and frankly if he wasn't involved, the project wouldn't have happened at all. As a tech worker with minimal experience in the architectural design and construction industry, his advice and feedback on the structural and architectural plans drastically reduced the overall cost while increasing the buildings structural integrity. In addition to providing modified stamped-and-sealed plans which were accepted by the county without issue, he also assisted with additional guidance and documentation for my GC and the concrete subcontractors to ensure inspections passed. Cody Johnston offers a premium, white-glove service at a price that the larger firms in the area can't compete with. He also actually picks up the phone, which the dozen or so other firms I called were apparently incapable of doing. He possesses a great deal of experience, phenomenal communication skills, and a friendly disposition that absolves any doubt that the project will be seen to completion. My GC has had a great experience working with him, and will likely use him in the future as well. 10/10 all around. Thank you, Cody!
James L· 2 months ago · via Google
★★★★★
Cody was awesome. We did a virtual consult, and I was initially skeptical, but my project was straightforward enough to forego an in-person visit. After sending my reno plans and sharing some pictures of the area being renovated, Cody was able to outline the necessary specs to ensure proper beam and header needs for safe load bearing of the new structure. Had no issues getting my permit after sharing Cody's specs with the city. Smooth and easy process. Highly recommend!
Duane Smith· 4 months ago · via Google
★★★★★
An awesome experience with Cody at Oakline Structural Engineering; I phoned for an informal consultation on concerns about our new home build, and Cody took the time to listen, assess, and advise… delivering peace of mind and putting our concerns to rest. His willingness to spend his valuable time on a complimentary consultation with me was totally unexpected. Finding such helpful, honest folks can be a challenge these days, and so I wholeheartedly recommend Cody and Oakline Structural Engineering for such professionalism and attentiveness. Thanks Cody!
Phillip Chudoba· 4 months ago · via Google
Licensed in seven states
Headquartered in Raleigh, North Carolina — serving homeowners and builders in every major metro across our licensed states. Building from plans you bought? Each state asks something different of them.
North Carolina
Raleigh · Charlotte · Durham · Wilmington · Greensboro · Cary · Fayetteville
House plans in North Carolina →Ready to turn your plans into a home?
Cody personally reviews your plans — flagging structural issues, finding ways to save on your build, and giving straight advice for the right foundation and framing choices specific for your lot. Free, no obligation, and he can also give you a firm engineering price in a day or two.