Executive Summary

The HERS® industry is scaling. In 2024, RESNET professionals rated 436,798 homes, continuing the industry’s record growth, and the organization’s stated goal is one million ratings annually by the end of 2028.¹ Reaching that goal requires a workforce that is growing, not shrinking. It requires raters who can sustain their businesses, invest in their equipment, and stay in the profession long enough to train the next generation.

New RESNET standards, addenda, and program revisions can add operational time and cost to the field professional’s workload. These additions may be necessary for building science. But they are not consistently measured, and because they are unmeasured, they can be invisible to the market, difficult to recover in rater fees, and unaccounted for in the standards development process itself.

This white paper proposes the Rater Overhead Impact Index (ROII): a standardized metric to be published alongside each significant RESNET standard change. The ROII quantifies the operational delta, the additional time and direct expense, so that the work required for implementation is accounted for in the industry’s value chain.

The ROII does not slow progress. It professionalizes it. When stakeholders understand the resources required for implementation, they can plan staffing, training, schedules, budgets, and effective dates with fewer surprises.

The Transparency Gap in Technical Evolution

Building science does not happen in a vacuum. It happens in the field, on ladders, and behind keyboards. When a new standard is introduced, implementation-cost discussions often focus on the builder’s materials, such as moving from fiberglass to spray foam or adding a ventilation system. The operational delta on the other side of the transaction also deserves to be calculated:

• Additional field time for new testing protocols and verification procedures
• Expanded administrative requirements for photo documentation, QA submissions, and record keeping
• Capital investment in new or upgraded equipment, software, and calibration
• Heightened QAD auditing time driven by evolving compliance requirements

A single change may appear modest. But the cumulative effect of HVAC 310 grading, enhanced quality-control protocols, expanded photo requirements, and new ventilation addenda can create a compounding operational delta that goes unmeasured. Without a metric, raters lack a consistent professional language for communicating this value to builder clients. The ROII closes that gap.

The ROII Scorecard

We propose that each significant RESNET amendment, standard update, or major program change include a published ROII Scorecard with the following components:

Swipe to view the complete table.

The Formula

Result: Estimated implementation impact per affected rating. L includes only incremental, change-specific expenses that are not already captured in the company’s loaded labor rate.

The time and resource inputs are the proposed public output. The dollar calculation below is only an illustrative planning example. Each company would apply its own confidential costs independently; company-specific calculations would not be collected, compared, recommended, or published.

ΔTf

Added field time per home

ΔTa

Added administrative and QA time per home

Rate

The rating company’s own loaded labor rate

L

Per-home share of added equipment, software, calibration, training, and consumable costs

The loaded labor rate reflects the rater’s true cost of doing business: vehicle, insurance, software subscriptions, benefits, and professional development. For the worked example below, an illustrative $80-per-hour assumption is used. It is not a fee, pricing recommendation, or market benchmark.

Why the ROII Strengthens RESNET

1. It Protects the HERS® Brand

RESNET does not set rater fees, but it does set the scope of work. If scope increases without market clarity on the cost of that scope, rating companies may face pressure on staffing, scheduling, and quality control. The ROII gives RESNET a way to demonstrate that it measures the cost of maintaining its standards and builds that transparency into the process.

2. It Supports the Path to One Million Ratings

RESNET’s goal of one million annual ratings by the end of 2028 requires a workforce that is growing. That means new raters entering the profession and experienced raters staying in it. The ROII helps raters build sustainable businesses by giving them a professional framework to communicate the value of their work, not as a complaint, but as market data.

3. It Creates Market Clarity

The ROII is not a price mandate. It is a transparency instrument. It does not tell anyone what to charge. It tells stakeholders the resources a change may require for professional delivery. Builders deserve to understand the implementation demands behind the certifications they are purchasing. Raters deserve to understand the implementation demands behind the standards they are implementing. The ROII provides both.

4. It Supports Better Implementation Planning

Documenting implementation resources gives rating firms, builders, providers, and RESNET a shared planning reference. Each organization would remain responsible for its own staffing, budgeting, purchasing, and pricing decisions.

How the ROII Would Work in Practice

RESNET could establish a balanced ROII working group that includes field raters, QADs, rating providers, builders, program representatives, and RESNET standards staff across multiple climates and market types.

Beta Testing: Before a significant standard or addendum is finalized, ROII committee members could perform field tests to estimate the time and cost requirements of the proposed change.

Publication: The ROII Scorecard could be published alongside the standard itself, on the same page and in the same announcement. It would not be buried in an appendix or released after the fact.

Annual Cumulative Report: RESNET could publish an annual ROII Summary showing the cumulative operational delta of changes issued in that calendar year. This would give raters, providers, builders, and RESNET leadership a shared picture of the year’s impact.

Frequently Asked Questions