 
Why NYC Buildings With Poor LL84 Data Often Receive Low LL95 Grades
For many New York City property owners, receiving a disappointing Local Law 95 grade comes as an unpleasant surprise. In many cases, the issue is not the building itself—it is the quality of the benchmarking data submitted under Local Law 84.
Every year, thousands of commercial and multifamily buildings report their annual energy consumption through the Local Law 84 benchmarking program. That information becomes one of the key inputs used to determine the Building Energy Efficiency Rating displayed under Local Law 95.
If the benchmarking data is incomplete, inaccurate, or poorly managed, the resulting efficiency score may not reflect the building’s true performance. This can lead to lower public grades, unnecessary compliance concerns, and a negative perception among tenants, investors, and prospective buyers.
Understanding the connection between Local Law 84 and Local Law 95 is essential for building owners, property managers, and facility teams looking to maintain strong energy performance and remain compliant with New York City’s sustainability regulations.
Understanding the Relationship Between LL84 and LL95
Although Local Law 84 and Local Law 95 are separate regulations, they work together.
Local Law 84 requires covered buildings to benchmark and report their annual energy and water consumption using ENERGY STAR Portfolio Manager.
Local Law 95 uses that benchmarking information to assign a public Building Energy Efficiency Rating, typically ranging from A to D, or N when a score cannot be assigned.
Simply put:
- LL84 collects the data.
- LL95 displays the building’s performance to the public.
This means the quality of your LL84 submission directly affects your LL95 grade.
Even if a building has upgraded equipment or invested in energy-saving improvements, inaccurate benchmarking can prevent those improvements from being reflected in its public rating.
How LL84 Data Affects Your LL95 Grade
The Department of Buildings relies on benchmarking information to calculate a building’s ENERGY STAR score or determine its Building Energy Efficiency Rating.
Several pieces of information reported through LL84 influence the final result, including:
- Electricity consumption
- Natural gas usage
- Steam usage
- Fuel oil consumption
- Water usage
- Building occupancy
- Gross floor area
- Property use types
- Operating hours
- Number of occupants
- Data center or parking space information
If any of these values are incorrect, the building’s calculated performance may also become inaccurate.
As a result, the LL95 grade may not represent the building’s actual efficiency.
Common LL84 Data Problems That Lower LL95 Grades
Many buildings receive poor grades because of avoidable benchmarking mistakes rather than poor energy performance.
Incorrect Building Size
Gross floor area is one of the most important benchmarking inputs.
If a building reports more square footage than it actually uses, its energy intensity appears worse than reality.
Similarly, excluding occupied spaces can artificially distort performance calculations.
Regular verification of building dimensions helps ensure accurate benchmarking.
Missing Utility Data
Incomplete utility information is one of the most common compliance issues.
Examples include:
- Missing electric bills
- Unreported natural gas accounts
- Missing steam consumption
- Incomplete fuel oil records
Even a single missing month can reduce the accuracy of benchmarking results.
Portfolio Manager expects complete annual utility data for reliable scoring.
Incorrect Property Type
Many mixed-use buildings are incorrectly categorized.
For example, office buildings with retail space, residential towers with commercial areas, or healthcare facilities with administrative offices often require multiple property use entries.
Improper classification affects ENERGY STAR calculations and may lower overall scores.
Occupancy Errors
Benchmarking calculations consider how buildings are used.
Incorrect reporting of:
- Number of workers
- Resident count
- Weekly operating hours
- Vacancy rates
can significantly influence benchmarking outcomes.
Buildings operating below normal occupancy should ensure those conditions are accurately documented.
Meter Configuration Problems
Large NYC buildings frequently have multiple electric or gas meters.
Common issues include:
- Duplicate meters
- Missing meters
- Incorrect meter connections
- Shared utility accounts
If utility meters are not configured correctly within Portfolio Manager, total energy consumption may be overreported or underreported.
Data Entry Mistakes
Simple human errors continue to create major compliance problems.
Examples include:
- Decimal point mistakes
- Swapped utility values
- Incorrect billing periods
- Wrong units of measurement
These errors may appear minor but can dramatically affect benchmarking scores.
Why Poor LL95 Grades Matter
Some owners assume the LL95 grade is merely informational.
In reality, the grade has become an important indicator of building performance.
A lower public grade can influence:
Tenant Perception
Businesses increasingly consider sustainability when selecting office space.
Residential tenants also prefer buildings demonstrating strong environmental performance.
A visible low grade may create concerns before prospective tenants even enter the building.
Property Value
Institutional investors and lenders are placing greater emphasis on Environmental, Social, and Governance (ESG) performance.
Buildings with stronger energy performance often appear more attractive during acquisitions and refinancing.
Market Reputation
The LL95 grade is displayed publicly.
Owners, property managers, and developers increasingly view these grades as part of their brand reputation.
Poor public ratings may encourage additional questions from investors and stakeholders.
Future Compliance Planning
Poor benchmarking data may also create challenges when planning compliance with:
- Local Law 97
- Capital improvement projects
- Energy audits
- Carbon reduction strategies
Reliable benchmarking provides a stronger foundation for long-term sustainability planning.
Signs Your Building May Have Benchmarking Issues
Several warning signs indicate your LL84 submission should be reviewed.
These include:
- Unexpected drop in ENERGY STAR score
- Sudden change in energy use intensity (EUI)
- Large differences from previous years
- Missing utility accounts
- Significant occupancy changes
- Recently renovated spaces not updated
- Mixed-use areas reported incorrectly
- Multiple utility providers without proper tracking
If any of these situations apply, your LL95 grade may not accurately represent your building’s performance.
Best Practices for Improving LL84 Data Quality
Improving benchmarking accuracy does not always require expensive building upgrades.
Often, the first step is improving data management.
Verify Building Information Annually
Review:
- Gross floor area
- Occupancy levels
- Property use types
- Operating schedules
Buildings change over time, and benchmarking records should reflect those changes.
Reconcile Utility Bills
Compare every utility bill against Portfolio Manager records.
Ensure:
- All months are included
- No duplicate entries exist
- Meter readings match invoices
Complete annual utility records produce more reliable benchmarking results.
Review Meter Configuration
Confirm every utility meter is:
- Connected correctly
- Assigned to the proper building
- Active throughout the reporting period
Accurate meter configuration prevents reporting errors.
Conduct Internal Quality Checks
Before submitting annual benchmarking reports, perform a complete review of all inputs.
Many organizations use standardized validation procedures to identify anomalies before submission.
Work With Experienced Benchmarking Professionals
Experienced sustainability consultants understand common benchmarking issues and regulatory requirements.
Professional reviews can identify inconsistencies that internal teams may overlook.
Accurate reporting today can improve future Building Energy Efficiency Ratings.
How Better LL84 Data Supports Long-Term Compliance
Accurate benchmarking offers benefits that extend beyond receiving a better LL95 grade.
Reliable data supports:
- Better energy management decisions
- More accurate capital planning
- Identification of efficiency opportunities
- Stronger Local Law 97 compliance strategies
- Improved ESG reporting
- Better financial forecasting
- Reduced compliance risks
High-quality data allows building owners to make informed investment decisions instead of relying on incomplete or inaccurate information.
The Role of Benchmarking in NYC’s Sustainability Goals
New York City continues to strengthen its climate initiatives by encouraging greater transparency in building performance.
Benchmarking serves as one of the city’s most valuable tools for measuring energy efficiency across thousands of buildings.
When building owners submit accurate LL84 data, city agencies, investors, tenants, and owners all benefit from reliable information that supports smarter energy decisions.
As regulations continue to evolve, data quality will become even more important.
Buildings with well-managed benchmarking records are generally better positioned to meet future energy performance standards and carbon reduction requirements.
Conclusion
Poor Local Law 84 data is one of the leading reasons many New York City buildings receive lower-than-expected Local Law 95 grades. In many situations, the issue is not excessive energy use but inaccurate benchmarking, incomplete utility records, incorrect property information, or preventable reporting mistakes.
By verifying building information, maintaining complete utility records, reviewing Portfolio Manager data carefully, and working with experienced compliance professionals, property owners can improve the accuracy of their benchmarking submissions and achieve Building Energy Efficiency Ratings that more accurately reflect their buildings’ actual performance.
For organizations managing multiple properties or preparing for future compliance requirements, accurate LL84 reporting is more than an annual filing—it is a critical step toward stronger operational performance, better public transparency, and long-term compliance with New York City’s evolving sustainability regulations.
Frequently Asked Questions
Does inaccurate LL84 data always result in a poor LL95 grade?
Not always, but inaccurate benchmarking data can significantly affect the ENERGY STAR score and Building Energy Efficiency Rating used for Local Law 95.
Can correcting LL84 data improve future LL95 grades?
Yes. If benchmarking information is accurate and reflects actual building performance, future LL95 grades are more likely to represent the building’s true energy efficiency.
What is the most common LL84 reporting mistake?
Missing utility data, incorrect gross floor area, improper property use classification, and occupancy errors are among the most common issues.
Does LL95 measure actual building efficiency?
LL95 reflects efficiency based on benchmarking information submitted through LL84. The accuracy of the grade depends heavily on the quality of that reported data.
Should building owners review benchmarking data before submission?
Absolutely. Annual quality checks help identify reporting errors before they affect public energy grades and future compliance planning.
