Submeter vs RUBS: Which Utility Billing Method Is Right for Your Multifamily Property?

Utility billing in multifamily properties comes down to two primary approaches: submetering, which measures actual consumption per unit, and RUBS (Ratio Utility Billing System), which allocates costs based on formulas. Each has distinct advantages, and the right choice depends on your property's age, market, regulatory environment, and operational priorities.

Understanding Submetering

Submetering installs individual meters for each unit, measuring actual water, gas, or electric consumption. Residents receive bills based on their real usage—what they consume is what they pay.

How it works:

• Individual meters track consumption per unit
• Bills reflect actual usage plus applicable fees
• Common area consumption is tracked separately
• Data flows into billing systems automatically

Key advantages:

• Accuracy: Residents pay only for what they use
• Conservation incentive: Usage-based billing reduces waste by 15-25%
• Fairness: No subsidizing neighbors' consumption
• Compliance: Meets requirements in jurisdictions restricting allocation methods
• ESG data: Granular consumption data for sustainability reporting

Considerations:

• Upfront cost: $150-$500 per meter installed
• Infrastructure requirements: Some older buildings lack submeter-ready plumbing/electrical
• Ongoing maintenance: Meters require periodic calibration and replacement

Understanding RUBS

RUBS allocates total utility costs across occupied units using formulas based on factors like square footage, occupancy count, or a combination. No individual meters are required.

How it works:

• Property receives a single master utility bill
• Total cost is divided using a predetermined formula
• Each unit receives a charge based on their allocation factor
• Calculations typically occur monthly with rent billing

Common allocation factors:

• Square footage (most common)
• Occupancy count
• Number of bedrooms/bathrooms
• Combination methods

Key advantages:

• Low implementation cost: No meter installation required
• Simple administration: Formula-based calculations
• Quick deployment: Can implement within billing cycles
• Works for any building age: No infrastructure modifications needed

Considerations:

• Perception of unfairness: Residents may feel overcharged
• No conservation incentive: No behavioral feedback on usage
• Regulatory risk: Some jurisdictions restrict or prohibit RUBS
• Dispute potential: Residents may challenge allocations

Regulatory Landscape

The regulatory environment increasingly favors submetering over RUBS, particularly for water billing.

States with significant RUBS restrictions:

• California: Requires submeters for new construction; limits RUBS for water
• Texas: Mandates specific disclosure requirements
• Georgia: Requires submetering for water in new construction
• Arizona: Restricts water allocation methodologies

Before implementing either system, verify local and state regulations. Compliance violations can result in penalties and forced refunds to residents.

Cost-Benefit Analysis

Submetering ROI calculation:

For a 200-unit property with $150,000 annual water costs:

• Submeter installation: $60,000 (at $300/unit)
• Annual conservation savings: 20% = $30,000
• Improved recovery rate: Additional $15,000
• Payback period: ~18 months
• 5-year ROI: 275%

RUBS ROI calculation:

For the same 200-unit property:

• Implementation cost: ~$2,000 (billing system setup)
• Typical recovery rate: 70-85% of costs
• Annual recovery: $105,000-$127,500
• Immediate positive cash flow

Making the Decision

Choose submetering when:

• Building new or undergoing major renovation
• Operating in regulatory environments favoring submetering
• ESG reporting is a priority
• Long-term hold strategy
• Resident demographic expects usage-based billing
• Competitive market where fairness is a differentiator

Choose RUBS when:

• Operating older buildings without submeter infrastructure
• Short-term hold or repositioning strategy
• Regulatory environment permits allocation
• Budget constraints prevent meter installation
• Properties with consistent unit sizes and occupancy

Hybrid approach:

Many operators use both methods across portfolios:

• Submeter new acquisitions and renovations
• Maintain RUBS on legacy properties
• Transition properties during capital improvement cycles

Implementation Best Practices

Regardless of method chosen:

SOLV's utility management platform supports both submetering and RUBS methodologies, allowing portfolio-wide visibility and unified reporting regardless of property-level billing approach.

Frequently Asked Questions

Can I switch from RUBS to submetering mid-lease?

Yes, but it requires proper notice and typically takes effect at lease renewal. Most jurisdictions require 30-60 days written notice before changing billing methodology. Include provisions in your lease that allow for billing method changes with appropriate notice.

Which method results in higher cost recovery?

Submetering typically achieves 90-98% recovery rates versus 70-85% for RUBS. The difference comes from reduced disputes, increased accuracy, and better documentation. However, submetering has higher upfront costs that must be factored into ROI calculations.

How do I handle common area utilities with submetering?

Common area consumption (lobbies, amenities, landscaping) is typically retained as a property expense or allocated via a separate, disclosed common area fee. Most submetering implementations track and report these costs separately from resident billing.