The Compliance Rules
Behind Every Bill
Every bill Sentinel generates is validated against fourteen California compliance rules — the Mobilehome Residency Law plus the Public Utilities Code. Every statutory rule is tied to the specific code section it enforces.
For the full regulatory breakdown of each rule, see our compliance guide.
Meter Readings on Bill
Residents can verify every charge themselves — which eliminates disputes before they reach your office.
CARE Discount Passthrough
Eligible residents receive the full utility discount, removing a common source of complaints and attorney-fee litigation.
FERA Discount Passthrough
Families between 200–250% of federal poverty guidelines get the full electric discount — catching a gap that often slips through when only CARE is tracked.
Cal. Pub. Util. Code § 739.12(b)No Markup Above Utility Rates
CriticalThe single most litigated utility billing requirement in California manufactured housing. Gas and electric charges are capped at direct-service rates; water at the property's actual purveyor bill.
Cal. Pub. Util. Code § 739.5(a) · Cal. Civ. Code § 798.40(c)Separate Itemization
Electric, gas, water, and sewer appear as distinct line items — making disputes quick to resolve and rate parity simple to demonstrate.
Cal. Civ. Code § 798.41(a)Billing Agent Disclosure
When Sentinel generates bills on behalf of management, the agency relationship is disclosed on every bill. No hidden third-party surprises.
Cal. Civ. Code § 798.40(b)Common Area Metering Disclosure
Clubhouse, pool, and lighting consumption is transparently disclosed — or clearly excluded from resident bills.
Cal. Civ. Code § 798.43Tier-by-Tier Rate Parity
Every usage tier is checked against the direct-service tariff rate for the same schedule and period — not just the bill's total.
Cal. Pub. Util. Code § 739.5(a)Income-Graded Fixed Charges
CARE- and FERA-enrolled residents are billed the fixed monthly charge at their program's income-graded tier — never the standard tier.
CPUC Decision 24-05-028Master-Bill Ceiling
Divided master-bill charges can never sum to more than the property's own utility bill, and common-area usage is never silently spread across residents.
Cal. Pub. Util. Code § 739.5(a) · Cal. Civ. Code § 798.40(c)Water Billed From the Purveyor Bill
CriticalSince 2022, submetered water can only be billed from the property's actual water bill — never a posted tariff schedule — with the administrative fee capped by statute.
Cal. Civ. Code § 798.40(c) (AB 1061 / AB 604)Utility Conversion Rent Offset
Converting a bundled utility to separate billing requires a simultaneous rent reduction equal to the trailing twelve-month average cost.
Cal. Civ. Code § 798.41(a)–(b)Flat Pass-Through Traceability
Flat lines like trash trace to a documented amount actually assessed — separately stated, never exceeded, prorated only downward.
Cal. Civ. Code §§ 798.41(a), (d), 798.31Rate Schedule Reference
Every line item cites the certified rate schedule used, so any charge can be independently verified in seconds.
Internal audit standardWant the rule-by-rule deep dive with statute citations and compliant vs. non-compliant bill examples? Read the 14 rules in detail →
Go Deeper, Statute by Statute
Civil Code § 798.40
Separate statement, meter readings, billing-agent disclosure — and the water-service billing limits, including the (c)(3) fee cap.
Civil Code § 798.41
Converting bundled utilities to separate billing, the mandatory simultaneous rent reduction, and flat pass-through limits.
Civil Code § 798.43.1
The CARE discount in master-metered communities — the annual notice, application assistance, and the 100% passthrough.
Public Utilities Code § 739.5
The same-rate rule for submetered gas and electric — tier parity, the master-meter discount, and rebate passthrough.
And for the § 798.40(c)(3) administrative fee, compute the maximum lawful amount with the water fee cap calculator →
The Compliance Landscape
California's manufactured housing utility billing regulations are among the most detailed in the country. The Mobilehome Residency Law (Cal. Civ. Code §§ 798–799.11) and the Public Utilities Code (§§ 739.5, 739.12) establish specific requirements for how utility charges are calculated, disclosed, and billed to residents.
Violations carry real consequences. Cal. Civ. Code § 798.86 provides for attorney fees to the prevailing party in MRL enforcement actions — creating a financial incentive for litigation. Overbilling, even unintentionally, can become a liability event.
Sentinel doesn't make compliance an afterthought. Every bill is checked before it's issued, with the result documented and traceable.
One Charge, Complete Provenance
Electric usage charge: $47.82
Rate schedule: SCE DMS-2, effective 2026-01-01
Source: SCE Tariff Book, Schedule DMS-2 (PDF, SHA-256 verified)
Source document: SCE Tariff Book, Schedule DMS-2 (PDF, SHA-256: a3f8...c912, archived 2025-12-15)
Extraction confidence: 0.94 (auto-certified)
Meter reading: 487 kWh (Space 101, read 2026-03-15)
Baseline allocation: Zone 10, Summer, All-Electric
CARE discount applied: -$14.35
Compliance: 8/8 rules passed
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