The deal operating system that gets smarter with every deal you close.
AI-Native · Built for Business Brokers · Powered by CAIBVS™ Methodology
Stop spending 60% of your time on documents and analysis.
MainStreetOS™ automates the work — so you can focus on closing deals.
MainStreetOS™ automates the work — so you can focus on closing deals.
Autonomous AI agents · Semantic deal memory · Full document generation · Secure client portal
5x
Faster valuation reports vs. manual process
$1M–5M
Main Street & mid-market deal sweet spot
5
Autonomous AI agents working every deal
Free
First valuation — no credit card required
The Platform
Everything a broker needs. One system.
MainStreetOS™ is the first full-stack AI operating system built specifically for business brokers and M&A intermediaries — not a generic CRM with AI bolted on. Built by a practicing broker with 45+ years of CRE and M&A transaction experience.
AI Valuation Engine5-agent CAIBVS™ pipeline — SDE, EBITDA, asset, DCF & market approaches in one USPAP-style report with multi-year weighted SDE and auto add-back normalization.
AI Document GenerationOffering Memorandums, CIMs, BVRs, lease abstracts, and LOIs generated from your deal data — not fill-in templates. Professional output in minutes, not days.
Semantic Deal MemoryOpen Brain memory layer — every deal, comp, and outcome becomes searchable institutional knowledge. Your agents get smarter with every transaction.
Deal Pipeline ManagementLead intake through closing — NDA workflows, buyer scoring, stage-based automation, and a secure client portal replacing Assembly.com.
BizBuySell™ Lead ProcessingAutomated lead intake, classification, and personalized response drafting wired directly to your LEADS database and deal pipeline.
Secure Client PortalPermission-controlled data rooms for buyers and sellers — confidential financials shared securely without emailing sensitive documents.
Why MainStreetOS™
vs. the two leading platforms.
| Feature | MSOS | Deal Studio® | DealRelations© |
|---|---|---|---|
| AI Valuations (USPAP) | ✓ Full | ✗ | ✗ |
| 5-Method SDE/EBITDA | ✓ | ✗ | ✗ |
| Agentic AI Pipeline | ✓ | ✗ | ✗ |
| OM + CIM + BVR Gen | ✓ All | CIM only | ✗ |
| Semantic Deal Memory | ✓ | ✗ | ✗ |
| CRM + Pipeline Mgmt | ✓ | ✓ | ✓ |
| NDA + Doc Management | ✓ | ✓ | ✓ |
| Built by a Broker | ✓ CAIBVS™ | ✗ | ✓ |
| Pricing | $49–$499/mo | $6,500 setup + $497/mo |
$99/user/mo |
"I evaluated every platform on the market. None did what brokers actually need. So I built it — by a practicing broker, for practicing brokers."
— Mark S. Mueller, CAIBVS™ · Founder, MainStreetOS™
Pricing
Start free. Scale as you grow.
Free
$0
- 1 valuation/mo
- Summary report
- Market multiple
- Lead capture
Starter
$49/mo
- 5 valuations/mo
- PDF export
- 3 AI methods
- Document gen
Pro
$149/mo
- 25 valuations/mo
- DOCX + PDF
- All 5 methods
- Open Brain
- Client portal
Enterprise
$499/mo
- Unlimited
- White-label
- Custom methods
- API access
- Team seats
All plans include Supabase-backed secure storage, SSL encryption, and row-level data isolation. No setup fees. Cancel anytime.
Coming soon to MainStreetOS™.biz
✓ Deal pipeline automation
✓ Buyer matching engine
✓ NDA workflow builder
✓ Co-brokerage management
✓ BizBuySell™ auto-publish
✓ MCP cross-tool memory
Managing Broker & M&A Intermediary · Titusville, NJ · 45+ Years CRE & Business Transaction Experience · Main Street & Mid-Market M&A · $1M–$5M
© 2026 CRE Resources, LLC · MainStreetOS™ · All Rights Reserved · mainstreetos.biz · markm@creresources.biz · Titusville, NJ