Foundation type
Slab, crawl space, or basement — the single biggest structural cost decision on most lots, and the one most often made by default instead of by analysis.
Structural Engineering for Custom Homes
You don’t need an architect to build a custom home — you need a design you love and engineering that makes it safe, permitted, and affordable to build. The best time to bring in the engineer is before your design is final, while the money-saving decisions are still on the table.
★★★★★ 5.0 on Google · 96 verified reviews · Cody Johnston, PE, MBA · Licensed in NC, SC, GA, TN, TX, KY & AL
Architect? Designer? Engineer? Here’s the honest answer.
In every state we’re licensed in, a single-family home doesn’t require an architect. What the permit office requires is a plan set that demonstrates code compliance — and in much of our territory, PE-sealed structural drawings. That’s why most custom homes around here are designed by a home designer (layout, look, livability) and engineered by a structural PE (foundation, framing, bracing, connections). Same permit, same quality of home, many thousands less in professional fees than full architectural service.
Architects earn their fee on genuinely hard design problems — steep lots, ambitious modern designs, full project management. If that’s your build, hire one; we work with architects all the time. For everyone else: designer + engineer is the team. Architect vs. structural engineer, explained →
The decisions that save money are made before plans are final
Quality engineering saves you money — and it saves the most when it has a seat at the table early. These are the calls we help you make while they’re still cheap to make:
Framing approach
Stick vs. trusses, span layout, and bearing locations. Chosen early, these decide how much lumber your house needs — and how fast it goes up.
Roof complexity
Every extra ridge and dormer is beautiful — and structural. Knowing the cost of each while the design is still moving lets you spend where it shows.
Right-sized structure
Beams and footings sized to your actual loads instead of worst-case guesses. This is where engineering routinely pays for itself.
The track record: we routinely save clients more on construction than our fee costs — right-sized structure, fewer field changes, no permit rework. That’s what “quality engineering saves you money” means in practice.
From your designer’s drawings to permit-ready plans
- 1.
Talk to Cody early. Share your design direction, your lot, and your budget priorities — even a sketch or a Pinterest board. You’ll get straight advice on foundation and framing choices for your lot, free and with no obligation.
- 2.
We engineer the whole structure. Foundation, floor framing, wall bracing, roof framing, and every connection — designed for your soil, your wind zone, and your state’s code, coordinated directly with your designer and builder.
- 3.
You get sealed drawings — and an engineer who answers. Permit-ready PDFs, typically within about two weeks of final architectural plans, with fast answers for your reviewer and framing crew all the way through the build.
Custom Home Questions, Answered
Do I need an architect to build a custom home?
In every state we’re licensed in, a single-family home does not require an architect — that’s written into each state’s architectural practice act. What your permit office requires is a code-compliant plan set, and in much of our territory that means PE-sealed structural drawings. Most custom homes here are designed by a home designer and engineered by a structural PE, at a fraction of full architectural fees. An architect earns their fee on genuinely complex design problems; for most homes, designer + engineer is the right team.
When should the structural engineer get involved?
Before the design is final. Once plans are finished, the structural choices are mostly locked. While the design is still moving, the right foundation for your lot, a framing approach that suits your spans, and a roof that doesn’t fight physics are all still on the table — and those are the decisions where real construction money is saved or wasted.
What does full structural design for a custom home include?
The complete engineered structure: foundation designed for your soil, floor framing for every level, the wall bracing system that resists wind, roof framing (rafters or truss coordination), and every connection in the load path — delivered as a sealed set your permit office accepts and your builder can build from. Most projects finish within about two weeks of receiving the architectural design.
How much does structural engineering cost for a custom home?
It depends on size and complexity — a simple single-story costs less than a multi-level home with complex roof lines or a walkout basement. Tell us about your project and you’ll have a firm price within 1 business day, free. And quality engineering routinely saves more in construction cost than it charges, by right-sizing beams, footings, and framing instead of overbuilding “to be safe.”
Do you work with owner-builders?
Yes — happily. Owner-builders don’t have a GC feeding them answers, so we end up being the technical partner in your corner: engineering the structure, explaining decisions in plain language, and answering your permit office’s questions quickly.
Already have finished plans? Head straight to the free plan review · Building from a purchased plan? See structural design services · all seven license states
Designing Your Custom 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.
Talk to Cody Before You Finalize Your Design