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Send us your plans
Upload the plans you bought, plus your lot address. Cody reviews them personally and replies with a firm price and timeline - usually within a day or two, free and with no obligation.
Do your house plans need an engineer's seal in Kentucky?
Usually yes - and Kentucky at least removes the biggest variable, because one code applies statewide and local jurisdictions cannot adopt something different.
That leaves the ground. Across central Kentucky the limestone under your lot is the reason a generic foundation detail from a plan catalog is not good enough.
Cody Johnston, PE, MBA — Kentucky license #40738. Verify with the Kentucky Board of Licensure for Professional Engineers and Land Surveyors.
What you're actually buying
A seal is not a service. It is a signature at the end of one.
When a professional engineer seals a drawing, they are taking personal and legal responsibility for a structural design performed under their responsible charge. Which means the design has to exist first: a foundation sized for your soil, beams sized for your spans, a lateral system that resolves the wind and seismic loads at your address, and connections detailed through a continuous load path from roof sheathing to foundation anchor. The seal documents that work. It cannot substitute for it.
There are services that will put a stamp on plans they did not engineer. We are not one of them — a stamp applied to work nobody performed will not survive a serious plan review, and it is not something a licensed engineer can ethically provide. What you get from Oakline is the engineering. The seal comes with it.
How it works in Kentucky
Kentucky enforces the 2018 Kentucky Residential Code, based on the 2015 IRC with state amendments. Because Kentucky is a mini/maxi state, that code is both the minimum and the maximum - Louisville, Lexington, Bowling Green, and the smallest county all review against the identical edition. In most of our other states the first question is always which code your city uses. Here it is settled.
Predictable code does not mean prescriptive framing always works. Purchased house plans still arrive without lateral bracing design, without foundations matched to the site, and specifying engineered lumber the span tables do not cover. Kentucky just removes the guesswork about which rulebook you are being measured against.
What a purchased plan is missing in Kentucky
A house plan shows what your home looks like. These are the structural items it almost never carries — and the ones that generate correction letters:
- Foundation design matched to the actual site, which in central Kentucky means accounting for what may be underneath it.
- Lateral bracing for open plans - catalog plans do not include it, here or anywhere.
- Tall foundation walls and walkout basements on rolling terrain, the norm across much of the state.
- Engineered lumber specifications outside the prescriptive tables.
- Seismic detailing in far western Kentucky, near the New Madrid zone.
What Kentucky ground does to foundations
Central Kentucky - Lexington, Frankfort, the Bluegrass - sits on karst: limestone bedrock that dissolves into caves, voids, and sinkholes. Karst is a foundation engineering problem first and foremost. Footing layouts and slab designs need to respect what may or may not be under them.
Far western Kentucky adds the New Madrid seismic zone - Paducah and the Purchase region carry real earthquake design requirements that shape bracing and connections.
And across the state, walkout basements on rolling terrain keep retaining design and tall foundation walls in regular rotation. Our Kentucky practice is fully remote: structural design for new builds around Louisville, Lexington, and the Bowling Green growth corridor, plus beam design and structural letters for renovations.
What you get back
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We engineer your home
Foundation, floor and roof framing, beams, bracing, and connections - designed for your lot, your soil, and the code Kentucky actually enforces, then sealed under license #40738.
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You pull your permit
Permit-ready drawings your reviewer accepts and your builder can actually build from. Typical turnaround is about two weeks.
Good engineering usually pays for itself. Right-sizing beams and footings to your actual loads — instead of the worst-case assumptions baked into a catalog plan — regularly saves more in lumber and concrete than the engineering fee costs.
Common questions — Kentucky
Which building code does my Kentucky county use?
The same one as every other Kentucky county: the 2018 Kentucky Residential Code, based on the 2015 IRC. Kentucky is a mini/maxi state, so local jurisdictions cannot adopt a different edition - a rare bit of predictability.
What is karst and why does it matter for my foundation?
Much of central Kentucky sits on limestone that dissolves into voids and sinkholes. Foundations there deserve engineered design that accounts for the site rather than a generic detail. It is one of the most common reasons Kentucky plan reviewers and builders bring in a structural engineer.
Do you visit sites in Kentucky?
Kentucky work is handled remotely - structural design, foundation and framing design, and structural letters, delivered as sealed PDFs your local building department accepts. For issues needing eyes on site, we coordinate with local inspectors or your contractor's photos and documentation.
More on how we work across the state: structural engineering in Kentucky · all service areas · general FAQ
Send Cody your plans. He'll tell you what they need.
A free review, a straight answer about what your Kentucky project actually requires, and a firm price in a day or two. If your plans don't need engineering, he'll tell you that too.