Free California Shared Utility Disclosure

How Can a California Landlord Bill for Utilities? Three Arrangements, Three Rule Sets

Almost every California utility dispute starts with a question of plumbing and wiring rather than law: how the building is metered. Three arrangements are common, and each is governed by a different body of rules. Getting the arrangement wrong is what creates the disclosure problem this page’s form exists to solve.

Direct metering is the simplest. Each unit has its own meter, the tenant opens their own account with the utility, and the landlord is not in the billing chain at all. There is nothing to disclose under Civil Code § 1940.9 because nothing is shared — provided that is genuinely true of the wiring, which is precisely the assumption that turns out to be wrong in older buildings.

Master metering with submeters means the utility bills the building through one master meter, and the landlord measures each unit with a submeter and bills the tenant for their measured share. Here the landlord becomes, in the Public Utilities Code’s language, a master-meter customer, and Public Utilities Code § 739.5 governs what may be charged. Submetered water has its own separate chapter in the Civil Code.

Ratio allocation, usually called RUBS, has no meter behind it at all: a single bill is divided among units by a formula — square footage, occupancy, fixture count, or some combination. It is the arrangement with the least statutory scaffolding in California, and the one that most often produces a dispute.

Civil Code § 1940.9 addresses a fourth situation that cuts across all three: a unit that has its own meter, where that meter also serves something outside the unit. That is not a billing method so much as a wiring defect with legal consequences, and it is the subject of the disclosure form on this page.

When a Tenant’s Meter Serves Someone Else: § 1940.9 in Practice

The classic case is a hallway light, a laundry room, a garage door opener, a landscape irrigation controller, or a neighbouring unit’s outlet wired into one tenant’s meter. The tenant pays for it without knowing, and often without any way of knowing.

Civil Code § 1940.9 gives a landlord who knows of that arrangement two routes, and only two. The first is to execute a mutual written agreement with the tenant for the tenant’s payment of the cost of the gas or electric service that their meter supplies to areas outside their unit. The second is to make other arrangements, as mutually agreed in writing, for payment of that service. In practice the second route most often means the landlord becomes the customer of record on that meter and takes the bill themselves, then handles the tenant’s own usage separately.

Both routes are written and both are mutual. A rent increase said to cover the difference, an oral understanding at the viewing, or a line buried in a lease that the tenant never had explained are none of them what the statute describes.

The remedy is what gives the section teeth. Where the landlord has not complied, a tenant may bring an action, and the court may order the landlord to become the registered customer for that meter and to reimburse the tenant for payments the tenant made to the utility for service to areas outside their dwelling unit — running back to the point at which the obligation to disclose arose. That last clause is the expensive part. The exposure is not measured from the tenant’s complaint; it is measured from when the landlord should have spoken up, which in a long tenancy can be years of somebody else’s electricity.

Because the duty attaches on discovery as well as before the tenancy begins, a landlord who learns mid-tenancy that a meter is cross-wired does not get to wait until renewal. The disclosure and the written arrangement are due then.

Master-Metered Buildings: the Same-Rate Rule in Public Utilities Code § 739.5

If the building runs on a master meter and the landlord submeters the units, the landlord is reselling utility service, and the Public Utilities Code sets the price. Section 739.5 requires that the master-meter customer “shall charge each user of the service at the same rate that would be applicable if the user were receiving gas or electricity, or both, directly from the gas corporation or load-serving entity.”

The practical meaning is that a submetered tenant should end up paying what they would have paid as a direct residential customer of the utility — including the benefit of the residential rate structure, rather than a commercial rate the building might be billed at, and rather than a rate the landlord has chosen.

The section also caps cost recovery: such costs “shall not exceed the average cost that the gas or electrical corporation would have incurred in providing comparable services directly to the users.” Read together, these two limits leave no room for a margin. Submetered utility service in a master-metered California building is a pass-through, not a revenue line.

This is the single most common place landlords get into trouble without meaning to. Adding a per-unit “administration” charge to a submetered gas or electric bill, rounding usage up, or applying a flat monthly figure that exceeds actual metered cost all run against the same-rate and cost-cap language. If the arithmetic on a submetered gas or electric bill produces more money than the utility charged for that consumption, the arrangement needs review.

Submetered Water: What the SB 7 Chapter Actually Requires

Water submetering is governed separately, by its own chapter of the Civil Code beginning at § 1954.201. The chapter’s stated purposes are to encourage water conservation in multifamily rental buildings “through means either within the landlord’s or the tenant’s control,” and to establish that submetering practices “are just and reasonable, and include appropriate safeguards for both tenants and landlords.” Conservation and fairness are both on the face of the statute, which matters when a billing practice is challenged as unreasonable.

One point of correction is worth making, because several widely-read guides get it wrong: § 1954.202 is the definitions section. It defines terms such as billing agent, landlord, submeter and water service. It is not itself the submetering requirement, and citing it as though it were will not help a landlord who needs to know what is actually required.

The equipment rules are in § 1954.203. A submeter must be inspected, tested and verified for commercial purposes pursuant to law — that is, it must be a properly certified measuring device rather than any convenient gauge. It must also be capable of being read by the tenant, and capable of being read by the landlord without entering the dwelling unit. A submeter a tenant cannot check, or one that requires entry to read, does not meet the section.

What may actually be billed is in § 1954.204, and it is a closed list of four things: payment for the amount of usage as measured by the submeter and charged at allowable rates; payment of a portion of the fixed fee charged by the water purveyor for water service; a fee for the landlord’s or billing agent’s costs as specified in § 1954.205; and any late fee, in the amounts and at the times permitted by § 1954.213. Because the statute enumerates what may be billed, a charge that does not fall into one of those categories has no obvious basis.

The administrative fee is capped, and the cap moves. Section 1954.205 permits a billing, administrative or other fee for the landlord’s and billing agent’s costs, set at the lesser of two figures: a dollar amount the statute prints as four dollars and seventy-five cents, as adjusted under the section, or 25 per cent of the amount billed for measured usage. The printed figure is adjusted annually for increases in the Consumer Price Index, with adjustment running from 1 January 2018 — so the number in the statute is not the number that governs today. Before relying on any specific dollar cap, confirm the current adjusted figure rather than quoting the printed one, and remember that the 25 per cent alternative can be the lower of the two on a small bill and will then be the one that applies.

The chapter is detailed and this is a summary of the provisions landlords ask about most; the full chapter runs beyond these sections, and a building with an unusual configuration is worth checking against the chapter itself.

RUBS: Allocating a Bill With No Meter Behind It

Ratio utility billing divides a single master bill among units by a formula rather than by measurement. Its appeal is obvious: no submeters to install, certify or read. Its legal position in California is the weakest of the three arrangements, and landlords should understand why before adopting it.

No California statute squarely authorises or regulates ratio allocation in residential rentals. That is not the same as saying it is prohibited — it means the specific protections and permissions that exist elsewhere do not obviously reach it. The Civil Code water chapter is built around a submeter as that term is defined in § 1954.202, and a formula is not a measuring device. Public Utilities Code § 739.5 addresses the rate a master-meter customer charges users of submetered service. An allocation formula sits outside the clear centre of both.

What follows practically is that a RUBS arrangement is governed largely by the lease, by general principles of contract and fair dealing, and by any local ordinance — and several California cities regulate utility pass-throughs more tightly than state law does, particularly where rent stabilisation applies. A landlord using RUBS should check the local ordinance before anything else, because that is where the binding constraint is most likely to be found.

Two practical cautions. A formula that produces more revenue in total than the underlying bill is very hard to defend under any theory. And a formula disclosed only as a line item on a monthly statement, rather than explained in the lease before signing, invites exactly the argument that the tenant never agreed to it.

What Should the Written Shared-Utility Agreement Actually Say?

Section 1940.9 requires a written, mutual arrangement but does not supply a form of words. A workable agreement answers five questions, and a dispute usually turns on whichever one it left out.

What is shared, specifically. Not “common areas” but the actual load: the hallway lighting on the second floor, the laundry room, the exterior receptacle on the north wall. A tenant cannot agree to something the agreement does not identify.

How the shared portion is quantified. A fixed monthly credit, a percentage, or a measured figure — and the basis for whichever is chosen. A number with no derivation is the hardest term to defend later.

Who pays whom, and how. Whether the tenant pays the utility and receives a rent credit, or the landlord takes the account and bills the tenant for their own usage, or some other route. State the mechanics, not the intention.

When it is reviewed. Shared loads change when a fixture is added or a common area is re-lamped. An agreement with no review point drifts out of accuracy and, with it, out of fairness.

What happens at renewal and on assignment. The arrangement should survive a renewal explicitly rather than by assumption, and a new tenant needs their own disclosure and their own agreement — the duty runs to each tenant, not to the unit.

How Do You Audit Your Own Utility Billing for Compliance?

Most non-compliance found in this area is inherited rather than intended — a building bought with an arrangement already running, or a practice set up before the current rules. A short audit finds it.

Start with the meters, not the paperwork. Establish what each meter physically serves. For older buildings this often means an electrician tracing circuits, because the panel schedule is frequently wrong. Until this is known, nothing downstream can be verified — and this step is what surfaces § 1940.9 exposure that nobody knew existed.

Name the arrangement. Direct, master-metered with submeters, ratio allocation, or a mixture. Buildings converted over time often run more than one, which means more than one rule set applies at once.

Check the arithmetic against the rule for that arrangement. For submetered gas or electric, compare what tenants were charged against what the utility charged for the same consumption; under § 739.5 the first should not exceed the second. For submetered water, test each line item against the four categories in § 1954.204 and confirm the administrative fee against the current adjusted cap in § 1954.205. For ratio allocation, total the allocations and compare them to the bill.

Read the leases against the practice. The commonest defect is a building billing correctly under a lease that describes something else, or a lease that is silent while the practice assumes agreement.

Fix the disclosure before the billing. Where a cross-metered load turns up, the § 1940.9 disclosure and written arrangement come first. Adjusting the charge without documenting the arrangement leaves the reimbursement exposure running.

Which Billing Arrangement Should a California Landlord Use?

There is no universally correct answer — the building usually decides. But the trade-offs are consistent, and seeing them together makes the choice clearer.

Arrangement	Who is billed by the utility	Governing rules	Main exposure
Direct metering	The tenant, on their own account	Little utility-specific law; § 1940.9 still applies if a meter is cross-wired	Assuming units are separately metered when they are not
Master meter + submeters	The landlord, as master-meter customer	Pub. Util. Code § 739.5 for gas/electric; Civ. Code § 1954.201 et seq. for water	Charging more than the pass-through the rate rules allow
Ratio allocation (RUBS)	The landlord	Largely the lease, general contract principles, and local ordinance	An allocation the tenant never clearly agreed to

Direct metering is the lowest-risk arrangement wherever the building supports it, because it takes the landlord out of the billing relationship altogether. Submetering is the right answer where a master meter already exists and the landlord wants usage-based fairness, but it brings real compliance obligations — certified equipment, a closed list of billable items, and a capped administrative fee. Ratio allocation is the cheapest to set up and the hardest to defend; where it is used, the lease has to carry the weight the statute does not.

One rule cuts across all three: whatever the arrangement, the tenant should be able to understand from their lease what they are paying for and how the figure is produced. Most disputes reaching a hearing are not really about the method — they are about a charge that was never explained.

Can a Landlord Ever Shut Off a Tenant’s Utilities?

No — and this is one of the sharpest penalty provisions in California landlord-tenant law. Civil Code § 789.3(a) provides that a landlord “shall not with intent to terminate the occupancy… willfully cause, directly or indirectly, the interruption or termination of any utility service furnished the tenant.”

Two words in that sentence do most of the work. Indirectly matters in a master-metered building: a landlord who simply stops paying the master bill, with the result that service to the units is cut, has not touched a switch but may still have caused the interruption. And intent to terminate the occupancy is an element of the offence — the section targets utility interruption used as a means of removing a tenant, rather than every outage. A genuine emergency repair or a utility-side failure is a different situation.

The damages are why this section is worth knowing before a rent dispute escalates. Under § 789.3(c) a landlord in violation is liable for the tenant’s actual damages, plus an amount not exceeding one hundred dollars for each day or part of a day the landlord remains in violation — with an award of no less than two hundred and fifty dollars for each separate cause of action — plus reasonable attorney’s fees to the prevailing party. Section 789.3(d) also allows a tenant to seek injunctive relief while the case is pending. A per-day penalty combined with a fee-shifting provision turns a short lapse into a disproportionate liability.

The related trap is retaliation. Civil Code § 1942.5 bars a lessor from recovering possession, causing the lessee to quit involuntarily, increasing the rent, or decreasing any services within 180 days of protected tenant activity — which includes complaining to the landlord about tenantability and complaining to a public agency. A tenant who has just challenged a utility charge as unlawful may well be inside that window, so a change to their service or rent that follows the complaint needs to be able to stand on its own footing.

What Happens to Utility Billing at Turnover?

Turnover is where documented arrangements quietly lapse, because the paperwork follows the unit while the duty follows the tenant.

A new tenant needs their own disclosure and their own written arrangement. A § 1940.9 agreement signed by the previous occupant does nothing for the incoming one. If the meter still serves a shared load, the disclosure is due again, before the new tenancy begins.

Take a dated closing read. On a submetered building, record the submeter reading at move-out and again at move-in, with the date and ideally a photograph. Without it, the first bill of the new tenancy is a disagreement waiting to happen, and the departing tenant’s final charge cannot be substantiated either.

Close the account cleanly where the tenant held it. Where the tenant was the customer of record, confirm the account transfer date rather than assuming it. A gap in which the landlord is the customer is normal; a gap in which nobody is, and service continues, produces a bill somebody will dispute.

Re-check what the meter serves. Turnover is the practical moment to verify the wiring, because the unit is empty and accessible. If a shared load has been added since the last tenancy — a new exterior light, an added appliance in a common area — the disclosure position has changed and the incoming tenant’s paperwork should reflect it.

Common Mistakes That Create Liability

Assuming the building is separately metered. In pre-1980 buildings especially, panel schedules are frequently wrong. This single assumption is the origin of most § 1940.9 exposure, and it is only ever resolved by tracing the circuits.

Treating a rent adjustment as the disclosure. Reducing rent to account for a shared load may be fair, but it is not the written, mutual arrangement the statute describes, and it does not stop the reimbursement remedy running.

Adding a margin to a submetered gas or electric bill. Public Utilities Code § 739.5 sets the tenant’s rate at what they would pay as a direct customer and caps recovery at the corporation’s own average cost. There is no room in that structure for a markup.

Billing items outside the § 1954.204 list on submetered water. The section enumerates what may be charged; anything else lacks an obvious basis.

Quoting the printed administrative-fee cap. The § 1954.205 figure is CPI-adjusted annually. Using the number as printed, without checking the current adjustment, produces a charge that is wrong in one direction or the other.

Leaving the arrangement undocumented at renewal. An arrangement that was properly agreed once but never carried into a renewal or a new tenancy is, as to that tenancy, no arrangement at all.

What Utility Records Should a Landlord Keep, and for How Long?

The § 1940.9 reimbursement remedy runs back to when the duty to disclose arose, not to when the tenant complained. That single feature decides the retention policy: records need to cover the whole period the arrangement was in place, not the last billing cycle.

Five things are worth holding. The signed disclosure and written arrangement for every tenant of every affected unit, each with its own date. The underlying utility bills for the master or shared meter, which are the only proof that a submetered charge was a genuine pass-through rather than a markup. The submeter readings, with dates — including the move-in and move-out reads that bracket each tenancy. The calculation behind each tenant charge, in whatever form it was actually produced, because a figure without a derivation cannot be defended two years later. And any wiring or circuit-tracing report, which is the document establishing what the landlord knew about the shared load and when.

Keep them for at least four years after the tenancy ends, which covers the ordinary limitation period for an action on a written agreement, and longer where the arrangement ran for many years or where a tenant may not have discovered the shared load until late.

Does This Apply to a Duplex or a Single-Family Rental?

The duty in Civil Code § 1940.9 is framed around the service supplied through “a tenant’s meter” to an area outside “the tenant’s dwelling unit” — it is not written around a building of any particular size or unit count. Small properties are therefore not obviously outside it, and in practice they produce the commonest version of the problem: a duplex where the shared porch light, the garage door opener, or the front irrigation timer was wired into whichever unit was closest.

Owners of one or two rental units are also the least likely to have had the wiring traced, because there is no building manager and no scheduled electrical work to surface it. If you own a duplex, a converted garage unit, or a house with an accessory dwelling unit, the shared-load question is worth answering deliberately rather than assuming a small property is a simple one.

What Should a Landlord Do When a Tenant Disputes a Utility Charge?

Answer with the arithmetic, promptly and in writing. Most utility disputes are resolved or lost on whether the landlord can show how the number was produced.

Send the underlying bill, the reading or allocation applied, and the calculation, rather than a restatement of the total. Where the charge turns out to be wrong, correct it and say so — a corrected charge is a far smaller problem than a defended one that later fails. And keep the response separate from any other decision about the tenancy: under Civil Code § 1942.5 a rent increase or a reduction in services within 180 days of a protected complaint invites a retaliation argument, whatever the landlord’s actual reason was.

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