For Developers & Investors
Turn-Key Construction.
Total Transparency.
Cost-plus owner's representation from market analysis to ribbon cutting. A percentage on actual labor, equipment, and material costs. No change orders. No hidden fees. We answer the questions everyone else is afraid to.
Talk to Justin DirectlyThe Problem
Traditional GCs Are Broken.
Fixed-bid contracts with hidden markups
Cost-plus on actual costs — you see every dollar
Change orders that blow up your budget
No change orders. Period.
GCs who dodge hard questions
We answer what everyone else is afraid to
Multiple contractors, zero accountability
One team, one point of contact, full ownership
Opaque pricing you can't verify
Full transparency — open books, real receipts
Scope creep with no warning
Proactive communication before issues become problems
How It Works
From Dirt to Done.
We manage every phase of your development — not just the build. Here's what turn-key actually means with Onyx & Iron.
Market Analysis
We study the numbers before you spend a dollar. Demand, comps, absorption rates, and feasibility — so you invest with confidence, not hope.
Acquisitions Support
Due diligence on land and existing structures. We identify what a site really needs before you close, so there are no surprises after.
Value Engineering
We optimize your design for cost efficiency without sacrificing quality. Better materials, smarter methods, lower spend — same result.
Land Development
From raw dirt to pad-ready lots. Grading, utilities, roads, drainage, and permitting — we handle the entire site development process.
Vertical Construction
Commercial builds, data centers, warehouses, retail, housing developments — we build it all. Ground-up, turn-key, on your timeline.
Project Closeout
Punch lists, inspections, CO, and handoff. We stay until every detail is done and you have keys in hand.
Our Model
Cost-Plus.
Open Books.
Here's how it works: you pay actual costs for labor, equipment, and materials — plus our management percentage. That's it. No inflated line items. No mystery markups. No change orders that magically appear mid-project.
You get full visibility into every invoice, every receipt, every cost. We open our books because we have nothing to hide. Most GCs won't do this because their margins depend on you not asking questions.
We answer the questions everyone else is afraid to.
Project Types
We Build It All.
Your Next Development. Our Full Commitment.
Whether it's a 10-lot subdivision or a $30M data center — we manage the entire project from market analysis to keys. One call to get started.
Schedule a Developer Consultation