Every utility bill issued to a manufactured housing resident in California must comply with specific requirements under the Mobilehome Residency Law (MRL). These are not guidelines or best practices — they are statutory obligations codified in the California Civil Code. Violations are enforceable through private litigation, and Cal. Civ. Code § 798.86 provides for attorney fees to the prevailing party, creating a financial incentive for residents to pursue enforcement.
The following 8 rules represent the core compliance requirements for utility billing in California manufactured housing communities. Seven are direct statutory mandates under the MRL. The eighth is an audit best practice that strengthens defensibility. For a broader view of how these rules fit into the full regulatory framework, see our complete compliance guide.
1. Meter Readings Must Be Shown
Cal. Civ. Code § 798.43(a) requires that every utility bill include the opening and closing meter readings and the total consumption for the billing period.
Why it matters: Meter readings allow residents to independently verify that the billed consumption matches the actual metered usage. Without readings on the bill, residents have no way to confirm the accuracy of the charges — and neither does the operator in the event of a dispute.
Compliant: The bill shows the prior meter reading, the current meter reading, and the calculated consumption for each utility type. For example: “Electric — Prior: 4,512 kWh | Current: 4,999 kWh | Usage: 487 kWh.”
Non-compliant: The bill shows only a dollar amount (e.g., “Electric: $62.47”) without the underlying meter readings. Also non-compliant: showing consumption without the opening and closing reads (e.g., “487 kWh used” without showing where the number came from).
2. CARE Discount Must Be Passed Through at 100%
Cal. Civ. Code § 798.43.1(c) requires that the California Alternate Rates for Energy (CARE) discount be passed through to eligible residents at the full discount rate — 100%, with no portion retained by management.
Why it matters: CARE provides a discount on electric and gas service for qualifying low-income households. In master-metered communities, the utility applies the CARE discount to the master meter account. The operator is required to pass that discount through to each enrolled resident. For a detailed breakdown, see our CARE and FERA passthrough guide.
Compliant: The enrolled resident's bill shows the full pre-discount charge, a separate CARE discount line item reflecting the utility's published discount rate, and the net charge after the discount.
Non-compliant: CARE-enrolled residents receive no discount on their bill, receive a reduced discount (less than the utility's published rate), or the discount is applied but not shown as a separate line item.
3. FERA Discount Must Be Passed Through at 100%
Cal. Civ. Code § 798.43.1(c) applies equally to the Family Electric Rate Assistance (FERA) program. FERA discounts must be passed through to eligible residents at the full discount rate.
Why it matters: FERA provides a discount on electric bills for households of three or more persons with income between 200% and 250% of the federal poverty guidelines. Unlike CARE, FERA applies only to electric service — there is no gas FERA discount. The passthrough obligation is identical to CARE: 100%, with no portion retained.
Compliant: The enrolled resident's electric bill shows the FERA discount as a separate line item at the utility's published FERA discount rate.
Non-compliant: FERA-enrolled residents receive no discount, the wrong discount percentage is applied, or FERA is confused with CARE and the wrong rate is used (FERA and CARE discount percentages differ).
4. Charges Cannot Exceed Direct Utility Rates
Cal. Civ. Code § 798.40(a) prohibits operators from charging residents more for utilities than the amount the serving utility charges for the same service. This is the “no-markup rule” — the most litigated utility billing provision in the MRL.
Why it matters: This provision means operators cannot profit from utility billing. The rate applied to each resident's consumption must match or be less than the applicable rate from the utility's published tariff schedule. Any amount charged above the published rate — including administrative fees, billing surcharges, or service charges added by the operator — violates this section.
Compliant: The operator applies the current published tariff rate for the applicable schedule (e.g., SCE Schedule D, SoCalGas Schedule GR) to each resident's metered consumption. When the utility publishes new rates, the operator updates billing rates to match on or before the effective date.
Non-compliant: The operator adds any fee on top of the utility's published rate. The operator continues billing at a previous rate after the utility has published a lower rate. The operator uses a flat rate per space instead of the metered tariff rate.
Consequences: Because Cal. Civ. Code § 798.86 provides for attorney fee recovery, rate parity violations create disproportionate litigation risk. Even a small per-resident overcharge, multiplied across a property and accumulated over months, can justify the cost of litigation for plaintiff's counsel. For a deeper analysis, see the rate parity section of the complete compliance guide.
5. Utility Charges Must Be Separately Itemized
Cal. Civ. Code § 798.41(a) requires that utility charges be separately stated from rent. Each utility type must be itemized individually.
Why it matters: Separate itemization serves two purposes. First, it allows residents to understand what they are paying for each utility and verify that the rates are correct. Second, it establishes that utility charges are distinct from rent — which matters for rent stabilization ordinances and for the operator's own accounting.
Compliant: The bill shows separate line items for each utility type (electric, gas, water, sewer), each with its own rate, consumption, and total. Rent appears as a separate charge.
Non-compliant: Utility charges are bundled into a single “Utilities” line, utilities are included in the rent amount, or different utility types are combined (e.g., “Electric & Gas: $87.20”).
6. Billing Agent Must Be Disclosed
Cal. Civ. Code § 798.40(b) requires that if a third-party billing agent generates utility bills on behalf of management, that relationship must be disclosed to residents.
When this applies: Any time management engages an outside company to calculate utility charges, generate bills, or handle utility billing operations, that company is a “billing agent” under this section. This includes full-service billing providers, software platforms that generate bills, and outsourced billing operations.
Compliant: Each bill includes a clear disclosure such as: “Utility billing services provided by [Company Name] on behalf of [Property Management].” The disclosure is on the bill itself — not buried in a lease addendum or community rules document.
Non-compliant: A third party generates and sends bills with no disclosure of the agency relationship. The billing agent presents itself as the billing authority rather than identifying itself as acting on behalf of management.
7. Common Area Metering Must Be Disclosed
Cal. Civ. Code § 798.43 requires that if common area utilities are metered separately or allocated across resident bills, the metering arrangement must be disclosed.
Why it matters: Common areas — clubhouses, pools, laundry facilities, landscape lighting, community offices — consume utilities. How that consumption is metered and billed affects residents. If common area usage flows through the master meter and is effectively distributed across resident bills, that must be transparent.
Compliant: The operator provides a disclosure (on the bill or in an accompanying notice) identifying how common area utility consumption is metered, whether any common area costs are allocated to resident bills, and if so, the method of allocation.
Non-compliant: Common area consumption is silently allocated across resident bills — residents pay for common area usage without knowing it. Or common areas are separately metered but the arrangement is not disclosed, leaving residents unable to confirm that their bills do not include common area costs.
8. Rate Schedule Must Be Referenced
Unlike the preceding seven rules, this is not a direct statutory mandate under the MRL. It is an audit best practice that materially strengthens the defensibility of every bill.
What it means: Every bill should reference the specific rate schedule used to calculate each charge — by name, version, and effective date. For example: “Rate schedule: SCE Schedule D, effective January 1, 2026.” This creates a verifiable link between the charge on the bill and the published tariff it was calculated from.
Why it matters: In a billing dispute, the operator must demonstrate that the rate used was the correct published rate in effect during the billing period. A rate schedule reference on the bill is the first link in that chain of evidence. Without it, the operator must reconstruct which rate was in effect, which version was used, and whether it was applied correctly — a significantly harder task months or years after the fact.
Best practice: Include the rate schedule name, effective date, and source utility on every bill. Maintain archived copies of every rate schedule used, with the source tariff document retained for reference. This creates an audit trail that runs from the published tariff to the rate to the bill — the foundation of defensible billing. For a complete view of the compliance framework these rules support, see the compliance page.