Your auto-supplier ERP runs Delta Township, but the state contract side still lives in three spreadsheets
A custom ERP (Enterprise Resource Planning) build for a Lansing auto supplier or state contractor runs $90,000 to $260,000 over 5 to 9 months. You go custom when your operation spans two worlds NetSuite and SAP were never priced to bridge at once: just-in-sequence delivery into GM Lansing Grand River, and the cost-accounting rigor a State of Michigan contract demands. Off-the-shelf forces you to pick one. Lansing operations live in both.
You run a tier-two supplier feeding the GM Lansing Grand River plant on a JIS schedule, and you also hold a few State of Michigan supply contracts that need defensible cost allocation. SAP Business One handles the manufacturing side cleanly until a state auditor asks how overhead got distributed across a government line item, and Odoo's accounting can answer that but stalls when the EDI 862 release comes in at 4am demanding sequenced delivery by 7am. So your controller keeps a parallel set of books, and your plant scheduler keeps another, and nobody trusts the dashboard.
NetSuite and Microsoft Dynamics will sell you both modules. What they won't do is make the sequencing engine and the state cost-accounting ledger share one version of a part number, one inventory truth, one labor figure. You end up paying enterprise license fees for two systems pretending to be one, with a person in the middle reconciling them.
Where the off-the-shelf tools fall short
- EDI 862 releases from GM arrive overnight and your ERP can't translate them into a sequenced pick list without a manual step
- State of Michigan contracts demand cost-allocation detail SAP Business One won't produce without bolt-on consultants
- Two sets of books: one your plant scheduler trusts, one your controller trusts, neither reconciled in real time
- Annual SAP and Dynamics license renewals climb every year while you use maybe a third of the modules
Custom erp: what Lansing teams actually get
A custom ERP lets the same part record carry both a JIS sequence position and a government cost-allocation code, so the number your scheduler sees and the number your auditor sees come from one source. You stop paying for modules you don't use and start owning the one workflow off-the-shelf vendors treat as an edge case: a Lansing shop that serves both an automaker and the state in the same week.
- You serve both an automaker and the State of Michigan and reconcile them by hand
- Your EDI releases require a manual translation step before they hit the floor
- Annual SAP or Dynamics renewals now exceed what a senior developer costs you for a year
- You only serve automotive and a standard manufacturing ERP covers your EDI needs
- You have no government contracts requiring special cost allocation
- You can't staff or contract anyone to maintain a system after launch
- One part record carries JIS sequence data and state cost codes, killing the parallel-books problem
- EDI 862 releases parse straight into a sequenced pick list with no overnight manual rekey
- Cost-allocation reports come out audit-ready for State of Michigan contract reviews
- You stop paying enterprise license tiers for modules a 40-person shop never touches
- The system speaks your actual plant cadence instead of a generic manufacturing template
- You own maintenance forever; when GM changes its EDI spec, your team fixes it, not a vendor hotline
- Initial build runs longer than a NetSuite implementation that already has the modules built
- If your auto and state lines diverge sharply, you may end up maintaining two domains inside one codebase anyway
- No marketplace of pre-built integrations; every connector to a bank or carrier is your project
Feature priorities for Lansing teams
ERP services we deliver in Lansing
Everything an ERP build here can cover: ERP integration, NetSuite customization, SAP integration, Odoo development and Microsoft Dynamics 365.
The honest cost picture for Lansing
| Project scope | Typical cost | Timeline |
|---|---|---|
| Single-plant ERP with EDI and JIS picking | $90k to $150k | 5 to 6 months |
| Dual-ledger build for auto plus state contracts | $150k to $220k | 6 to 8 months |
| Multi-site supplier with carrier and bank integrations | $200k to $260k | 8 to 9 months |
Timeline: what happens, and when
Exactly what you get
A single ERP where a part feeding GM Lansing Grand River and a part on a State of Michigan contract share one inventory record, one cost truth, and one audit trail. EDI releases flow into sequenced picking automatically. Your controller and your scheduler stop keeping rival spreadsheets. Pair it with a warehouse management system for the dock side, business intelligence dashboards for the capitol-facing reporting, and inventory management software if your raw-material buffers need their own logic.
How to choose a developer in Lansing
Hire someone who has shipped automotive EDI and can explain cost allocation for a government contract in plain English. Ask to see a release-spec integration they built, not a slide. Ask how they'd handle a 4am EDI 862 that demands a 7am sequenced delivery. A developer who talks only about modules, not about your actual JIS cadence and your state audit exposure, is selling you a configuration job dressed as custom work.
- !They've never integrated automotive EDI; ask which OEM release specs they've shipped against
- !They quote a fixed price before seeing your GM release cadence; ask what they'd do if the spec changes mid-build
- !They assume one set of books; ask how they'd model state cost allocation alongside standard costing
- !They want to rebuild your floor process to fit their template; ask how they adapt to JIS instead
- !No plan for who maintains the EDI connector after launch; ask for a support model in writing
Teams investing in erp in Lansing usually scope it next to internal tools, shopify, inventory management, since these systems share data and budgets.
Rohan advises mid-market and enterprise teams on ERP, CRM and custom software, and has led delivery on dozens of business-software builds.
Writes for Digital Heroes, shipping business software for 2,000+ brands across 55+ countries since 2017.
Frequently asked questions
How long does a custom ERP take for a Lansing auto supplier?
Plan on 5 to 9 months. A single-plant build with EDI and JIS picking lands around 5 to 6 months; adding a dual ledger for State of Michigan contract costing pushes it to 6 to 8.
Can custom ERP handle GM's EDI requirements?
Yes, if your developer has shipped against OEM release specs before. The system parses EDI 850, 862, and 856 and turns overnight releases into a sequenced pick list without a manual rekey.
Why not just add modules to SAP or NetSuite?
You can, but you pay enterprise license tiers for both the manufacturing and the cost-accounting sides, and they still don't share one part record. Custom puts both worlds on one inventory truth.