Oregon Utility Billing Disclosure & RUB Rules — Landlord Compliance Guide (2026)

Oregon Utility Billing Disclosure & RUB: What Landlords Must Know in 2026

You lease a duplex in Portland. The electrical meter serves both units, but one tenant uses significantly more power. You propose splitting the bill proportionally based on square footage—a practice known as ratio utility billing (RUB). Before you draft that lease addendum, stop.

Oregon law doesn’t ban RUB. But it imposes strict disclosure, calculation, and documentation requirements that many self-managing landlords overlook. Violate them, and you face statutory damages, attorney fees, and tenant lawsuits under ORS 90.315 and the RUB statutes (ORS 90.532-90.539).

This guide walks you through exactly what Oregon requires, when you must disclose, how to calculate charges legally, and what happens if you don’t comply.

What Is Ratio Utility Billing (RUB) Under Oregon Law?

Ratio utility billing is a method of allocating utility costs among tenants in a multi-unit property when individual meters don’t exist or aren’t practical. Instead of each tenant paying their proportional share based on actual consumption, RUB divides shared utility bills according to a fixed allocation method—usually square footage, number of occupants, or a combination.

Example: A four-unit building has one water meter. Total monthly water bill: $200. Unit A (800 sq ft): 32% of bill = $64. Unit B (1,000 sq ft): 40% of bill = $80. Unit C (600 sq ft): 24% of bill = $48. Unit D (600 sq ft): 24% of bill = $48.

RUB is legal in Oregon, but only under strict conditions. The statute recognizes that some properties genuinely cannot install individual meters, and RUB provides a transparent alternative to landlords absorbing all utility costs.

Oregon’s Utility Billing Disclosure Requirements (ORS 90.315)

ORS 90.315 is the foundational disclosure statute. It requires landlords to disclose to tenants—in writing, before or at lease signing—specific information about utilities.

What You Must Disclose Under ORS 90.315

You must provide written disclosure that includes:

• Which utilities are included in rent: Explicitly state whether water, sewer, gas, electric, garbage, internet, or other services are paid by the landlord or tenant.
• Utility billing method: If you use RUB or any allocation method other than individual metering, you must name it and describe how it works.
• The allocation formula: Provide the specific percentage or calculation method each tenant pays (e.g., “proportional to square footage,” “per occupant,” or a fixed percentage).
• Historical utility costs (if available): Oregon courts and the Oregon Bureau of Labor and Industries (BOLI) expect you to provide estimated monthly costs or recent billing history so tenants understand their financial exposure.
• Meter readings at move-in and move-out: If applicable, disclose that you will document starting and ending meter readings to calculate actual consumption during tenancy.

Critical timing: This disclosure must occur before the lease is signed or at lease signing. Providing it after the tenant moves in violates the statute, even if you later claim the tenant agreed.

Format requirement: The disclosure must be in writing. An oral explanation or email does not satisfy the statute. Landlords should use a separate, dated disclosure document or include the information clearly in the lease itself, initialed by both parties.

Penalty for Non-Compliance with ORS 90.315

Failure to disclose utility billing information is a violation of Oregon’s Residential Tenancies Act. Tenants can file a complaint with the Oregon Bureau of Labor and Industries (BOLI) or sue in small claims or civil court. Courts may award:

• Damages (actual costs incurred by tenant due to lack of disclosure)
• Statutory damages (often $50–$500+ depending on court discretion)
• Attorney fees and court costs
• Rent abatement if tenant can prove uninhabitable conditions resulted from undisclosed utilities

While Oregon law does not specify a fixed penalty amount in ORS 90.315 itself, BOLI and civil courts treat disclosure violations seriously, especially if landlords deliberately conceal billing methods.

Ratio Utility Billing Rules Under ORS 90.532–90.539

Oregon’s RUB statutes (ORS 90.532 through ORS 90.539) set out detailed requirements for when and how you can charge tenants for utilities using an allocation method.

Core Requirements for Legal RUB Implementation

1. Written Lease Amendment or Agreement (ORS 90.532)

You cannot impose RUB charges retroactively or surprise tenants mid-lease. You must:

• Include RUB terms in the lease before signing, OR
• Obtain written consent from the tenant to add RUB to an existing lease (this counts as an amendment)
• Make clear which utilities are subject to RUB allocation
• Include the allocation formula explicitly

2. Permissible Allocation Methods (ORS 90.533)

You may allocate utilities using one or more of these methods:

• Square footage of the rental unit: Most common method. Unit size as a percentage of total building size.
• Number of occupants: Per-person allocation (e.g., 2 occupants in a 4-occupant building = 50% of bill).
• Combination methods: For example, 60% by square footage and 40% by occupancy, if clearly disclosed.
• Submetering: If you install individual meters or devices after the property was built, you may charge tenants their actual measured consumption plus a reasonable service fee to cover equipment and billing costs.
• Other reasonable methods: You may propose alternative allocation methods if they are transparent, documented, and agreed to in writing by the tenant.

You cannot use arbitrary or undisclosed methods, nor can you use allocation formulas that punish tenants for occupancy choices (e.g., charging higher per-person rates if a tenant rents a unit and later has a child move in, if the lease limits occupants).

3. Service Charges and Administrative Fees (ORS 90.534)

If you use submetering or allocation, you may charge a reasonable service fee to cover:

• Cost of acquiring and installing submeters or billing equipment
• Cost of billing administration (printing, postage, processing)
• Cost of reading meters or calculating allocations

The statute does not specify a maximum service fee percentage, but fees must be documented, disclosed in advance, and reasonable. Oregon courts interpret “reasonable” narrowly. Charging a 25% administrative fee on a $50 utility bill ($12.50 fee) has been challenged successfully by tenants. Courts generally accept administrative fees of 5–10% of the utility bill.

4. Utility Cost Limits (ORS 90.535)

Oregon law includes a key protection: tenants’ utility bills allocated under RUB cannot exceed the tenant’s proportional share of the actual total utility cost for the building.

This means if you allocate utilities, you must verify that the sum of all tenants’ allocated charges equals (or does not exceed) the actual utility bill paid by you or billed by the utility company. If you overcharge one tenant to subsidize another, you violate ORS 90.535.

Example of a violation: Total building water bill = $200. You allocate: Unit A $70, Unit B $80, Unit C $60, Unit D $70. Total = $280. You’ve overallocated by $80. This is illegal under ORS 90.535, and you must refund the excess to tenants.

Documentation and Record-Keeping (ORS 90.536–90.539)

Oregon requires landlords to maintain detailed records of utility billing:

• Utility bills: Keep copies of all utility bills received (electric, gas, water, sewer, garbage) for at least 12 months.
• Allocation calculations: Document the method used to allocate each bill, including:
• Square footage of each unit (if using square footage method)
• Number of occupants in each unit (if using occupancy method)
• Dates the method applies (in case you change methods)
• Meter readings: If submetering, record meter readings at least monthly and retain records for 12 months.
• Correspondence: Keep copies of any written communication with tenants about utility billing, allocation methods, or disputes.
• Calculation worksheets: Document the math: Show the total bill, the allocation method, and each tenant’s calculated charge.

You must provide tenants with copies of allocation calculations upon request. If a tenant disputes a charge and you cannot produce documentation showing the calculation, Oregon courts will often rule in favor of the tenant.

Timing: When Utility Charges Must Be Billed

Under Oregon law, utility charges allocated under RUB must be billed separately from rent or clearly itemized if included in rent. Tenants have a right to know how much of their monthly payment goes to utilities versus base rent.

Bills should be provided:

• At the same time as the utility company bills you (if utilities are paid by the landlord and allocated to tenants), OR
• Monthly, on a regular schedule if you use submetering or calculated allocations
• In writing, with itemization showing the allocation method and the tenant’s calculated share

Delays of more than 30 days in billing tenants for their allocated utility share may be viewed as a waiver or as evidence that the charge is not reasonable.

Compliance Checklist: RUB Setup & Ongoing Management

Before Lease Signing or Amendment:

• ☐ Measure square footage of each unit and document.
• ☐ Decide allocation method (square footage, occupancy, combination, or submeter).
• ☐ Calculate what the average monthly utility cost will be per unit using the method.
• ☐ Write a clear, separate utility disclosure document or lease addendum that includes:
  • Which utilities are subject to RUB
  • The allocation method (e.g., “proportional to square footage”)
  • Each unit’s percentage or allocation
  • Estimated monthly charges based on historical data
  • When billing occurs and how charges are paid
  • Service fees (if any) and what they cover
• ☐ Obtain tenant’s signature and date on the disclosure.
• ☐ Provide tenant with a copy (keep one for your records).

Monthly/Ongoing:

• ☐ Collect utility bills from utility companies.
• ☐ Calculate each tenant’s allocated share using the documented method.
• ☐ Create an itemized bill showing:
  • Total utility bill amount
  • Allocation method used
  • Tenant’s percentage or per-unit share
  • Tenant’s calculated charge
  • Any service fees
• ☐ Bill tenant by a set date each month (same date as rent, if possible).
• ☐ Keep copies of all bills, calculations, and tenant records for 12 months minimum.

At Move-Out:

• ☐ Calculate final utility charges for the month of move-out, allocating only the portion of days the tenant occupied the unit (if applicable).
• ☐ Provide tenant with a final utility bill and documentation of the calculation.
• ☐ Issue a credit or collect additional payment if the proration results in a difference.
• ☐ Retain records for 12 months in case of disputes or tenant inquiries.

Common Compliance Mistakes & How to Avoid Them

Mistake #1: Failing to Disclose RUB Before Lease Signing

What happens: You include RUB language in the lease, tenant signs, then you start charging. Tenant later claims they didn’t understand the allocation method or never agreed.

Why it’s a problem: Oregon courts enforce the plain language of leases, but if the RUB method is unclear or buried in fine print, tenants can argue lack of informed consent. Moreover, if disclosure timing is improper, you’re in direct violation of ORS 90.315.

How to avoid: Use a separate, prominent disclosure document. Have the tenant initial each section (utilities, allocation method, estimated charges). Provide a copy to the tenant at signing and keep the signed original.

Mistake #2: Overcharging Through Vague or Changing Allocation Methods

What happens: You use a “reasonable allocation” without defining it, then adjust the percentages based on which tenants are easiest to collect from.

Why it’s a problem: ORS 90.533 requires a specific, documented allocation method disclosed in advance. Vague or changing methods give the appearance of arbitrariness and invite tenant disputes and BOLI complaints.

How to avoid: Choose one method and stick to it for the lease term. If you need to change methods (e.g., because a unit’s square footage was measured incorrectly), document the change in writing and obtain tenant consent.

Mistake #3: Including Service Fees Without Disclosure or Reasonable Justification

What happens: You add a 15% administrative fee to utility bills without mentioning it in the lease.

Why it’s a problem: ORS 90.534 allows service fees, but only if reasonable and disclosed. Tenants can file complaints claiming hidden fees or unfair charges.

How to avoid: If you charge a service fee, disclose it in the lease or utility disclosure document. Limit fees to 5–10% and tie them to actual costs (e.g., cost of meter reading or billing software). Document what the fee covers.

Mistake #4: Not Tracking Utility Bills or Calculations

What happens: A tenant disputes a charge, claiming it’s too high. You don’t have the utility bill or calculation documentation to back it up.

Why it’s a problem: Under ORS 90.536–90.539, you must maintain records. If you can’t produce them, Oregon courts often rule in favor of the tenant, and you may be forced to refund charges.

How to avoid: Create a spreadsheet or document file for each property. Record:

• Date utility bill received
• Total utility company bill amount
• Allocation method used
• Each tenant’s calculated share
• Date billed to tenant
• Date payment received (if any)

Retain for 12 months minimum.

Mistake #5: Mixing Utilities and Rent Without Clear Separation

What happens: You include utilities in the rent charge without itemizing them, making it impossible for tenants to know how much they’re paying for utilities.

Why it’s a problem: Transparency is core to Oregon law. Tenants have a statutory right to know what they’re paying and why. Bundling without itemization obscures the allocation and invites disputes.

How to avoid: Always bill utilities separately from rent, or itemize them clearly on the rent invoice. Example: “Rent: $1,200 | Allocated Utilities: $75 (water, sewer, garbage) | Total Due: $1,275.”

What Happens If You Violate Utility Billing Rules

Tenant Complaints to BOLI (Oregon Bureau of Labor and Industries)

Tenants can file complaints with BOLI regarding utility billing violations. BOLI investigates and may:

• Issue a citation ordering refunds and corrective action
• Assess administrative penalties (up to $5,000–$10,000 for serious or repeated violations)
• Require you to implement corrected billing practices
• Make the complaint a matter of public record, damaging your reputation

Tenant Lawsuits

Tenants can sue in small claims court (limit: $10,000 in Oregon) or circuit court. Possible damages include:

• Refunds of overcharged utility amounts
• Damages (often $100–$1,000+ per violation, depending on severity and duration)
• Attorney fees (tenants can recover attorney fees in Oregon landlord-tenant cases if they prevail)
• Court costs

Rent Abatement or Withholding

If tenants believe undisclosed or improper utility billing constitutes a breach of the habitability warranty or is retaliatory, they may have grounds to withhold rent or abate rent under ORS 90.360–90.365. This complicates collection and can damage your record.

Eviction Defenses

If you attempt to evict a tenant for non-payment of utility charges, the tenant can raise non-compliance with disclosure or RUB rules as an affirmative defense, potentially defeating the eviction.

Recent Updates: Oregon Utility Billing Law 2024–2026

As of July 2026, Oregon has not significantly amended ORS 90.532–90.539 in recent years. However, the following trends are relevant:

• BOLI enforcement has increased: The Oregon Bureau of Labor and Industries has prioritized utility billing complaints as part of broader housing compliance audits. Landlords with multiple violations face cumulative penalties.
• Submetering expansion: More landlords are installing smart submeters to provide tenant-level data. Oregon law permits this, but equipment costs and billing administration must be clearly disclosed and reasonable.
• Climate-focused utility programs: Some utility companies offer rebates for conservation. Landlords should verify that allocated utility bills don’t prevent tenants from accessing these programs (e.g., by excluding low-income assistance discounts).
• Interaction with local rent control: In Portland and other areas with rent increase limits, utility billing increases are sometimes treated separately from base rent increases. Clarify this in your lease and disclosure.

Using Technology to Stay Compliant

Managing RUB allocations manually leaves room for error and compliance gaps. LeaseBase’s compliance engine can help by:

• Storing and organizing utility disclosure templates specific to Oregon law
• Tracking utility bills and calculating allocations automatically based on your lease terms
• Generating itemized tenant bills with allocation documentation
• Maintaining 12-month records for audit or dispute purposes
• Flagging potential overcharge scenarios before billing tenants

Self-managing 2–75 units without dedicated utility tracking tools is error-prone. LeaseBase’s platform provides the structure and documentation you need to comply with ORS 90.315 and 90.532–90.539 without a property manager’s overhead.

FAQ: Oregon Utility Billing and RUB

Q1: Can I charge tenants for utilities if there’s only one meter for the whole building?

A: Yes, under Oregon law. If a shared meter exists, you can use ratio utility billing (RUB) to allocate costs to tenants. However, you must:

• Disclose the allocation method in writing before lease signing
• Use a permissible method (square footage, occupancy, or combination)
• Calculate and bill correctly so the sum of tenant charges doesn’t exceed the actual utility bill
• Keep records of calculations for 12 months

If you don’t want to use RUB, you can absorb the utility cost in rent or negotiate a flat utility fee separate from rent.

Q2: What’s the difference between charging a flat utility fee and using RUB?

A: A flat utility fee is a fixed amount charged to each tenant (e.g., “$50/month for utilities”) and doesn’t require allocation calculations. RUB divides the actual utility bill proportionally based on an allocation method.

Flat fee pros: Simple, predictable, fewer disputes.

Flat fee cons: If the actual bill is higher, you lose money; if lower, you overcharge tenants.

RUB pros: Aligns charges with actual costs; reflects usage fairly.

RUB cons: More complex, requires documentation, invites disputes if calculations are unclear.

Either method is legal as long as disclosed in advance in writing.

Q3: Can I install submeters and charge tenants for the equipment cost?

A: Yes. Under ORS 90.534, you can charge reasonable administrative or service fees to recover the cost of submetering equipment, installation, and ongoing meter reading. However:

• Disclose the fee amount and what it covers in the lease before charging
• Keep the fee reasonable (typically 5–10% of the utility bill; higher fees have been challenged successfully by tenants)
• Only recover actual equipment and administrative costs, not a profit margin
• Spread the equipment cost over multiple years; don’t recoup the full amount in month one

Q4: What happens if I forget to provide a utility disclosure before a tenant moves in?

A: You’ve violated ORS 90.315. The tenant can:

• Refuse to pay utility charges until proper disclosure is provided
• File a complaint with BOLI
• Sue for damages and attorney fees
• Withhold or abate rent if they claim the lack of disclosure affected habitability or fair dealing

What to do immediately: Provide written disclosure to the tenant right away, along with a sincere acknowledgment of the oversight. Refund any utility charges billed prior to disclosure. Document everything.

Q5: Can I change my allocation method mid-lease?

A: Not without the tenant’s written consent. If you want to change from square footage to per-occupant allocation, for example, you must:

• Provide written notice explaining the new method
• Show the tenant calculations proving the change is fair
• Obtain the tenant’s signature agreeing to the change
• Provide the modified allocation going forward

If the tenant refuses, you cannot change the method until lease renewal. Forcing a change without consent violates ORS 90.532 and can be grounds for a tenant complaint or lawsuit.

Conclusion: Compliance Is the Foundation of Utility Billing

Oregon’s utility billing disclosure and RUB rules aren’t obstacles—they’re protections that exist because tenant-landlord disputes over hidden charges are costly and contentious. Compliance costs you time upfront but saves you money and stress later.

The key steps are simple:

1. Disclose in writing before lease signing. Be specific about allocation method, charges, and how they’re calculated.
2. Use a permissible allocation method (square footage, occupancy, or combination).
3. Calculate accurately. Ensure tenant charges don’t exceed their proportional share of actual bills.
4. Bill clearly and separately. Itemize utilities so tenants know exactly what they’re paying.
5. Keep records. Document utility bills and calculations for 12 months.

If you manage 2–75 units and are currently tracking utility bills and allocations in spreadsheets, you’re vulnerable to errors that invite disputes. LeaseBase’s lease operations tools and compliance engine automate the documentation and calculation process, reducing risk and freeing you to focus on property management rather than utility accounting.

The cost of a compliance error—refunds, attorney fees, BOLI fines, and time—far exceeds the cost of getting it right the first time.

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Disclaimer: This article is for informational purposes only and does not constitute legal advice. Consult a qualified attorney for guidance specific to your situation. Oregon landlord-tenant law is complex and subject to updates. This article reflects the law as of July 2026 and may not account for recent amendments or case law. BOLI and the courts ultimately interpret and enforce the statutes.