Your auditors, twice as fast. Then we leave.

Petrium Alpha builds the tools, Microsoft 365 Copilot agents and team training that let lease-audit firms, tenants and property managers check a reconciliation against the lease in less time, then hands everything over so you own it.

Book a free Audit Speed Review
Try the tools
Stacked reconciliation documents: a billing statement, a general ledger and a spreadsheet, with a magnifier over one flagged figure.

What we build

Audit tools

Browser tools that tie out a reconciliation, test the caps and flag where it departs from the lease: capital expensed in one year instead of amortized, charges above the cap, controllable costs classed as non-controllable. They run on your machine and nothing is uploaded.

Microsoft 365 Copilot agents

For Microsoft shops: Microsoft Copilot Studio agents that read a lease, pull the audit clauses and flag what’s ambiguous, inside your own Microsoft 365 tenant.

Team training

Hands-on sessions that teach your auditors to use AI where it helps and to distrust it where it doesn’t.

How it works

1. Audit Speed Review (free, 30 minutes). Walk us through one step of your recon process. We show you what it looks like automated.

2. Fixed-scope build (2–4 weeks). One tool, one agent, or one training program, at a fixed price quoted within 24 hours.

3. Handoff. Your team is trained, the documentation is written, and the work is yours. Then we leave.

AI reads the lease. A deterministic check computes the number.

A language model is good at finding the clause and bad at arithmetic you can stand behind. So in everything we build, AI never produces a dollar figure that ends up in a finding. Every number comes from a check that gives the same answer every time and shows its working. You can see this in our five free tools.

The Red-Flag Scanner's summary for a synthetic reconciliation: an estimated tenant impact of $7,509 and the findings per check.
The Red-Flag Scanner, run on a synthetic reconciliation.

A tenant with a real-estate team?

Contingency auditors keep a quarter to a third of what they recover. We help you build the capability in-house and keep all of it.

For tenants

Issuing reconciliations?

Check them against the lease, line by line, before they go out.

For property managers

Founding clients: our first two engagements get founding-client terms in exchange for an anonymized case study. Ask about it in your Audit Speed Review.

See what your recon process looks like automated.

30 minutes. No slides. We’ll sign your NDA before you share anything.

Book a free Audit Speed Review