Mt. Sinai - 50 E 98th St
Multifamily Housing in New York City, NY · 42 EAST 98 STREET · 10029
At a glance
Mt. Sinai - 50 E 98th St is a 250,000-square-foot multifamily housing building at 42 EAST 98 STREET in New York City, New York, built in 1984. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 93 out of 100 (grade A), a site energy-use intensity of 75.6 kBtu/ft² and 1,274 tCO₂e of greenhouse-gas emissions. That score is higher than 80% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 93 (band A) |
| Site EUI | 75.6 kBtu/ft² |
| Source EUI | 109.9 kBtu/ft² |
| GHG emissions | 1,274 tCO₂e |
| GHG intensity | 5.1 kgCO₂e/ft² |
| Electricity | 1,281,688 kWh |
| Natural gas | 145,159 therms |
| Gross floor area | 250,000 sq ft |
| Source record | nyc:2794412:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 93 | -6 | 75.6 kBtu/ft² | 1,274 tCO₂e |
| 2023 | 99 | +3 | 56.5 kBtu/ft² | 978 tCO₂e |
| 2022 | 96 | 76.2 kBtu/ft² | 1,134 tCO₂e |
Compliance context
Local Law 84 (LL84)
Under Local Law 97, buildings over 25,000 sq ft face carbon caps with fines of $268 per metric ton of CO₂e over the limit, phasing in from 2024.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 42 EAST 98 STREET
- City
- New York City
- State
- New York
- ZIP
- 10029
- Coordinates
- 40.78847, -73.95307
Within ~1 km
Nearby benchmarked buildings
- WASHINGTON Bldgs 1-4, 15score —
Multifamily Housing · 3,094,106 sq ft
- WASHINGTONscore 30
Multifamily Housing · 1,404,388 sq ft
- WASHINGTON Bldgs 5-10score —
Multifamily Housing · 1,404,388 sq ft
Multifamily Housing · 1,384,883 sq ft
- CARVER Bldgs 1-6score 12
Multifamily Housing · 1,164,050 sq ft
- Annenbergscore —
Laboratory · 1,119,997 sq ft
See also: most efficient in New York City · biggest emitters
How does Mt. Sinai - 50 E 98th St compare with other multifamily housing buildings in New York City?
The latest disclosures cover 33,022 multifamily housing buildings in New York City, out of 48,310 buildings citywide. Mt. Sinai - 50 E 98th St's ENERGY STAR score of 93 compares with an average of 63 across the 22,829 that report a score; it scores higher than 80% of them and lower than 18%. Its site EUI of 75.6 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft². Its emissions intensity of 5.1 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 250,000 sq ft, it is about 148% above the average floor area of 100,951 sq ft for those buildings. It was built in 1984, 32 years later than the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Mt. Sinai - 50 E 98th St's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Mt. Sinai - 50 E 98th St, covering report years 2022–2024. Its ENERGY STAR score went from 96 in 2022 to 93 in 2024 (-3 points); its best year on file was 2023, at 99. Site EUI moved from 76.2 kBtu/ft² (2022) to 75.6 kBtu/ft² (2024), a 1% decrease. Reported emissions went from 1,134 tCO₂e to 1,274 tCO₂e over the same span (up 12%).
What does an ENERGY STAR score of 93 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 93 means the building performs better than about 93% of its national peers. BuildingCensus bands the score into report-card grades; 93 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In New York City, 43% of scored buildings are at 75 or above.
Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. Mt. Sinai - 50 E 98th St's 75.6 kBtu/ft² across 250,000 sq ft works out to about 18.9 billion Btu (5,539 MWh-equivalent) in 2024. Its source EUI of 109.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,281,688 kWh of electricity and 145,159 therms of natural gas for the year.
Which law requires Mt. Sinai - 50 E 98th St to report its energy use?
Mt. Sinai - 50 E 98th St reports under Local Law 84 (LL84), the legal basis of New York City's Energy and Water Data Disclosure program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record nyc:2794412:2024). Under Local Law 97, buildings over 25,000 sq ft face carbon caps with fines of $268 per metric ton of CO₂e over the limit, phasing in from 2024.
More multifamily housing buildings in New York City
- Stanley Commons· 249,992 sq ft · score 100 (A)
- 101 West 24th Street· 249,981 sq ft · score 7 (D)
- 420 Kent Avenue, LLC (416 Kent Ave)· 249,862 sq ft · score 64 (C)
- 225 West 106· 249,756 sq ft · score 70 (B)
- Tower Gardens· 249,600 sq ft · score 35 (D)
- 1930-1970 Bergen Ave - Parkmore Development LLC· 249,591 sq ft · score 100 (A)
- Multifamily Housing buildings in New York City· 33,022 benchmarked
- All New York City benchmarked buildings· Local Law 84 (LL84)
- Most efficient large buildings in New York City
- Least efficient large buildings in New York City
- Biggest emitters in New York City
Frequently asked questions
What is Mt. Sinai - 50 E 98th St's energy grade?
Mt. Sinai - 50 E 98th St scores 93 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Mt. Sinai - 50 E 98th St use?
Its 2024 site energy-use intensity was 75.6 kBtu/ft² (109.9 kBtu/ft² source) across 250,000 sq ft, including 1,281,688 kWh of electricity and 145,159 therms of natural gas.
What are Mt. Sinai - 50 E 98th St's carbon emissions?
Mt. Sinai - 50 E 98th St reported 1,274 tCO₂e of greenhouse-gas emissions (5.1 kgCO₂e/ft²) for 2024.
Where is Mt. Sinai - 50 E 98th St?
Mt. Sinai - 50 E 98th St is at 42 EAST 98 STREET, in New York City, New York 10029. Its coordinates are 40.78847, -73.95307 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Mt. Sinai - 50 E 98th St and when was it built?
Mt. Sinai - 50 E 98th St has 250,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1984 as its year built. It is classed as multifamily housing.
Is Mt. Sinai - 50 E 98th St covered by Local Law 84 (LL84)?
Yes — it appears in the 2024 Energy and Water Data Disclosure disclosure, which lists the buildings reporting under Local Law 84 (LL84).
Working with New York City building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
About this data
Source: Energy and Water Data Disclosure (Local Law 84 (LL84)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Mt. Sinai - 50 E 98th St, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/mt-sinai-50-e-98th-st-c1654e31 (data as of October 2, 2026).