Building Code
Indiana Building Code (675 IAC 13) based on the 2012 IBC with amendments
Indiana · Licensed Professional Engineering
Apex Grid Engineering provides civil and site engineering for commercial projects in Indiana, IN — grading, drainage, stormwater, and utility design by licensed PEs, sealed for permit through the applicable Indiana permitting authority. A veteran-owned firm licensed in 49 states, with 10+ licensed PEs on a 20+ engineer team — quotes within 12–24 hours on qualifying scopes.
Permit stuck waiting on a seal? Apex Grid's licensed engineers provide fast Civil review-and-seal for drawings in Indiana and across the state — reviewed under responsible charge and sealed for submittal to the applicable Indiana permitting authority. Typical turnaround is 3–5 business days once we have a complete package.
Site engineering in Indiana is dominated by stormwater rule 327 IAC 15-5 (Rule 5), the state's construction stormwater program, which requires a permit and stormwater pollution prevention plan for sites disturbing an acre or more. Post-construction water-quality and detention requirements are enforced through local MS4 communities and county drainage boards, so we design detention basins and water-quality practices to satisfy both Rule 5 and local criteria. Indiana's flat terrain and clay soils create drainage challenges, and county surveyors and drainage boards hold authority over regulated drains and legal outlets — resolving the legal drain outlet early is essential. For the large warehouse and distribution sites that define Indiana's market, we plan grading, truck-court drainage, and detention to move big impervious areas efficiently while meeting state and local water-quality volumes.
Code adoptions change on multi-year cycles and many states allow local amendments. The researched source verification date is 2026-07-28; we verify the governing edition with your permitting jurisdiction at project kickoff.
Indiana operates a statewide Plan Review through the Department of Homeland Security for many commercial projects, issuing a Construction Design Release before local permits proceed. Local building departments then handle inspections; Indianapolis and other larger cities run their own commercial review, so both the state release and local permitting must be sequenced.
Indiana grants licensure by endorsement/comity for NCEES-record engineers; electronic seals and digital signatures are accepted for plan submittals under board rules.
Indiana's central location makes it a national logistics and warehouse hub, with heavy distribution and e-commerce fulfillment construction around Indianapolis and along the interstate corridors. Advanced manufacturing, EV-supply-chain investment, life sciences, and pharmaceutical facilities add strong industrial demand statewide.
Key markets: Indianapolis, Fort Wayne, Evansville, South Bend, Carmel, Bloomington.
Our highest-demand markets for civil engineering in Indiana.
For projects whose jurisdiction, discipline, and scope pass review, an available licensed PE and coordinated team can be identified. Send us your scope for a proposal; timing and fee depend on the project.
Request a ProposalReviewed and sealed by licensed PEs. “Solid engineering and clear communication from start to finish.” — Jason Mitchell, Principal Architect
Tell us what you need and where the project is — quotes back within 12–24 hours on qualifying scopes.