The California Standard
Every Charge Traceable.
Every Dollar Provable.
Utility billing compliance for California manufactured housing operators. Full-service billing backed by certified rates, automated compliance checks, and a complete audit trail — from tariff document to resident bill.
Why Compliance Can't Be a Black Box
California's Mobilehome Residency Law requires precise utility billing — correct rates, proper disclosures, CARE and FERA discount passthrough, and no charges above the utility's published tariff. Violations expose operators to private litigation with attorney fee provisions that incentivize enforcement.
Most operators either handle billing themselves — and carry the compliance risk — or hand it to a provider who can't show how charges are calculated.
Neither is good enough.
What Sentinel Delivers
Every Rate Certified to Source
Every billing rate traces to a published utility tariff document. Sentinel monitors tariff filings from SCE, SoCalGas, PG&E, Cal Water, EMWD, and more — and certifies rates before they're used in any bill. No manual rate lookups. No stale data.
5+ Utilities Monitored
8 California Rules, Every Bill
Every bill is validated against 8 California MRL compliance rules at issuance — including CARE/FERA discount passthrough, no-markup verification, required disclosures, and meter reading documentation. Each check cites the specific statute.
8 MRL Rules · Every Bill
We Handle Everything
From meter reading to Rent Manager posting, Sentinel operates your utility billing end to end. You see proof of every charge — without doing any of the work. Residents get a self-service portal with their billing history, usage data, and rate schedules.
End-to-End Operations
The Hidden Cost
Stale Rates Don't Just Create Risk — They Cost You Money
When utility rates change and your billing provider doesn't catch it, you're not just exposed to compliance violations — you're under-billing every resident on the property. Month after month.
Sentinel's automated rate certification detects tariff changes as they're published, so you're always billing at the correct rate. Not last quarter's rate. Not last year's rate. The rate that's in effect right now.
The Audit Trail
Every Charge Has a Paper Trail
When a regulator, attorney, or resident asks “where did this charge come from?” — the answer is immediate and complete. Every line item on every bill connects to a documented chain of evidence.
Published Tariff Document
Original PDF from utility website, SHA-256 hash verified and archived
Document Verified & Archived
Stored with cryptographic hash, timestamp, and source URL for reproducibility
Rate Data Extracted
AI-assisted extraction with confidence scoring and human review when needed
Rate Schedule Certified
Versioned, effective-dated, linked to source document with full provenance
Compliant Bill Generated
Deterministic calculation with 8 MRL rules validated at issuance
Delivered to Residents & Property Management
Bills posted to resident portal and property management system, itemized by utility type
Flexible Service Levels
Choose Your Level of Involvement
Platform
Run billing through Sentinel with full tooling.
- Automated rate certification
- Compliance validation
- Bill generation with full provenance
- Resident portal
- Property management integration
You handle meter reads and resident disputes.
Full Service
Sentinel operates billing end to end.
Everything in Platform, plus:
- Licensed, insured field partners handle meter reads
- Resident support handled by Sentinel
- Liability coverage via E&O insurance
You see the proof. We do the work.
Both tiers run on the same technology. Start with Platform and upgrade when you're ready to go fully hands-off.
Let's Talk About Your Properties
We work with California manufactured housing operators who want accurate, defensible utility billing without the operational burden. If that sounds like you, we'd welcome the conversation.