Columbus Architecture & Engineering Under One Contract
TCG delivers architectural design through 3rd Act Architecture, MEP engineering through 9BA Engineering, and in-house structural engineering, all integrated with construction under a single design-build contract across Central Ohio.
Columbus Project Cost Estimator
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Your Columbus Construction Cost Estimate
Architecture and Engineering Built for Construction
Terrapin Construction Group delivers commercial architecture and engineering across the Columbus metro from 875 N High St, 3rd Floor #300, Columbus, OH 43215, through an integrated model: architectural design by 3rd Act Architecture, MEP engineering by 9BA Engineering, and structural engineering in-house, all under the same design-build contract as construction. The people drawing your building and the people pricing and building it are one team, which is why our documents are constructible, our budgets hold, and our change order logs stay short.
Central Ohio punishes design shortcuts. Clay and glacial till soils demand geotechnical investigation before anyone sizes a footing; the 32-inch frost depth and 20-25 psf ground snow loads govern foundations and roof framing; and the Ohio Building Code, administered by the Ohio Board of Building Standards, layers state amendments over the IBC baseline covered in our IBC 2024 changes guide. Our teams design to these conditions daily, and our preconstruction group prices every design milestone so the budget never drifts silently.
For owners comparing delivery methods, read our breakdowns of design-build vs CM-at-risk vs design-bid-build and cost-plus vs GMP contract structures. And if you already have drawings or bids in hand, our free bid review service will pressure-test them, no strings attached.
Columbus A&E Capabilities
Full-service design integrated with preconstruction and construction delivery.
Architectural Design
Programming, schematic design, design development, and permit documents through 3rd Act Architecture. See what architectural services cost.
MEP Engineering
Mechanical, electrical, and plumbing design by 9BA Engineering, from restaurant hoods to data center critical power. See MEP services.
Structural Engineering
Foundations for Ohio soils and frost, PEMB reaction coordination, snow drift analysis, and crane structures. See structural services.
Preconstruction & Budgeting
Milestone pricing, value engineering, and constructability review at every design phase through preconstruction services.
Permit Management
Full submission and comment-response management through City of Columbus and suburban jurisdictions, 4-10 week typical review.
Adaptive Reuse Documentation
Existing-building assessment and conversion documents for Columbus's older stock. See adaptive reuse services.
What Design Costs in Columbus (2026)
Commercial A&E fees in the Columbus market run 6-12% of construction cost: PEMB warehouses at the low end, healthcare, labs, and food facilities at the high end. Soft costs beyond design (permits, geotechnical investigation, survey, special inspections, testing) add roughly 3-6% more. On a design-build contract these fees are integrated with construction pricing, so owners see one number and one accountability line instead of a fee stack.
Plan with the A&E fees and soft costs guide, the master Commercial Construction Costs Guide, the process & project delivery guide, and the finance & owner advisory guide.
More TCG Services in Columbus
Explore TCG's full Columbus service cluster, or return to the Columbus commercial general contractor hub.
Related TCG Services Nationwide
Design flows straight into delivery: design-build, construction management, and every self-performed specialty trade.
Columbus Architecture & Engineering FAQ
Common questions about commercial design and engineering services in the Columbus metro. Visit our full FAQ page for 70+ questions, or see the Columbus commercial general contractor page for market-wide answers.
A&E fees typically run 6-12% of construction cost: warehouses and PEMBs at the low end, healthcare and laboratory facilities at the high end. Soft costs beyond design (permits, geotech, survey, testing) add another 3-6%. Our architectural services cost guide and A&E fees and soft costs guide break down every line.
Under design-build, the designer and builder share one contract and one accountability line, which eliminates the coordination gaps, finger-pointing, and change orders of design-bid-build. Projects typically deliver 15-30% faster and with fewer surprises. Our comparison of design-build vs CM-at-risk vs design-bid-build and our explainer on what a design-build contractor does cover the tradeoffs honestly.
Architecture runs through 3rd Act Architecture and MEP engineering through 9BA Engineering, TCG's integrated design partners, with structural engineering in-house. The person designing your building and the person pricing it sit on the same team, which is why our documents are constructible and our budgets hold. See architectural design services, MEP engineering, and structural engineering.
Three big ones: clay and glacial till soils with variable bearing capacity (geotechnical investigation is essential before foundation design), a 32-inch frost depth requiring frost-protected foundations, and 20-25 psf ground snow loads with drift analysis. The Ohio Building Code is administered through the Ohio Board of Building Standards; recent code cycles are covered in our IBC 2024 changes guide.
Commercial plan review through the City of Columbus Department of Building and Zoning Services typically runs 4-10 weeks, with suburban jurisdictions (Dublin, Westerville, New Albany, Grove City) varying. TCG manages the full submission and comment-response cycle. See the permitting timeline guide and our state-by-state permitting article.
Yes. We regularly complete or adapt partial documents, run constructability reviews on outside drawings, and price from existing plan sets as a general contractor. Our free bid review service is a low-risk way to pressure-test documents and pricing you already have in hand.
Yes. Ohio's commercial energy code follows IECC provisions, and envelope requirements are tightening; see our IECC 2024 envelope guide. For owners pursuing carbon accounting or lifecycle analysis, our whole-building LCA workflow guide and embodied carbon guide cover the current landscape.
Design and Build It With One Team
Architecture, MEP, structural, and construction under one Columbus contract. Start with a preconstruction conversation and a real budget before you spend a dollar on documents.
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