BuildingCensus
B

9850 Key West

Medical Office in Montgomery County, MD · 9850 Key West Ave · 20842

At a glance

9850 Key West is a 72,000-square-foot medical office at 9850 Key West Ave in Montgomery County, Maryland, built in 1999. In its 2024 Montgomery County benchmarking disclosure it reported an ENERGY STAR score of 82 out of 100 (grade B), a site energy-use intensity of 119.9 kBtu/ft² and 758 tCO₂e of greenhouse-gas emissions. That score is higher than 49% of the 45 scored medical office buildings in Montgomery County.

ENERGY STAR score
82
band B · 2024
Site EUI
119.9
kBtu/ft²
GHG emissions
758
tCO₂e
GHG intensity
—
kgCO₂e/ft²
Floor area
72,000
sq ft
Year built
1999
vintage

Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21) · reporting year 2024

Benchmarking record

FieldValue
ENERGY STAR score82 (band B)
Site EUI119.9 kBtu/ft²
Source EUI335.7 kBtu/ft²
GHG emissions758 tCO₂e
GHG intensity—
Electricity2,530,052 kWh
Natural gas0 therms
Gross floor area72,000 sq ft
Source recordmontgomery_county:34394044:2024

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2024latest82±0119.9 kBtu/ft²758 tCO₂e
202382119.4 kBtu/ft²773 tCO₂e

Compliance context

Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21)

Montgomery County's BEPS (Bill 16-21; regulations approved in 2025) sets declining site-EUI standards for buildings of 25,000+ sq ft, with interim and then final standards later this decade and into the 2030s depending on building type.

Program details →

Ownership

No owning organisation shown. Names of private individuals in the disclosure are not published here.

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Location

Address
9850 Key West Ave
State
Maryland
ZIP
20842

Within ~1 km

Nearby benchmarked buildings

This source publishes no coordinates, so nearby buildings can't be resolved yet.

See also: most efficient in Montgomery County · biggest emitters

How does 9850 Key West compare with other medical office buildings in Montgomery County?

The latest disclosures cover 52 medical office buildings in Montgomery County, out of 1,766 buildings citywide. 9850 Key West's ENERGY STAR score of 82 compares with an average of 70 across the 45 that report a score; it scores higher than 49% of them and lower than 42%. Its site EUI of 119.9 kBtu/ft² is about 53% above the average of 78.5 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 72,000 sq ft, it is roughly in line with the average floor area of 79,998 sq ft for those buildings. It was built in 1999, 13 years later than the group's average year built (1986). Across all 24 jurisdictions BuildingCensus covers, the 1,266 medical office buildings average an ENERGY STAR score of 64 and a site EUI of 92.2 kBtu/ft².

How has 9850 Key West's energy performance changed over time?

BuildingCensus holds 2 Montgomery County disclosures for 9850 Key West, covering report years 2023–2024. Its ENERGY STAR score was 82 in both 2023 and 2024. Site EUI moved from 119.4 kBtu/ft² (2023) to 119.9 kBtu/ft² (2024), an 0% increase. Reported emissions went from 773 tCO₂e to 758 tCO₂e over the same span (down 2%).

What does an ENERGY STAR score of 82 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 82 means the building performs better than about 82% of its national peers. BuildingCensus bands the score into report-card grades; 82 falls in band B — above median (70–84). 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 Montgomery County, 53% 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. 9850 Key West's 119.9 kBtu/ft² across 72,000 sq ft works out to about 8.6 billion Btu (2,530 MWh-equivalent) in 2024. Its source EUI of 335.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,530,052 kWh of electricity and 0 therms of natural gas for the year.

Which law requires 9850 Key West to report its energy use?

9850 Key West reports under the Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21), the legal basis of Montgomery County's Commercial Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record montgomery_county:34394044:2024). Montgomery County's BEPS (Bill 16-21; regulations approved in 2025) sets declining site-EUI standards for buildings of 25,000+ sq ft, with interim and then final standards later this decade and into the 2030s depending on building type.

More medical office buildings in Montgomery County

Frequently asked questions

What is 9850 Key West's energy grade?

9850 Key West scores 82 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 Montgomery County disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.

How much energy does 9850 Key West use?

Its 2024 site energy-use intensity was 119.9 kBtu/ft² (335.7 kBtu/ft² source) across 72,000 sq ft, including 2,530,052 kWh of electricity and 0 therms of natural gas.

What are 9850 Key West's carbon emissions?

9850 Key West reported 758 tCO₂e of greenhouse-gas emissions for 2024.

Where is 9850 Key West?

9850 Key West is at 9850 Key West Ave, in Montgomery County, Maryland 20842.

How big is 9850 Key West and when was it built?

9850 Key West has 72,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1999 as its year built. It is classed as medical office.

Is 9850 Key West covered by the Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21)?

Yes — it appears in the 2024 Commercial Building Energy Benchmarking disclosure, which lists the buildings reporting under the Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21).

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About this data

Source: Commercial Building Energy Benchmarking (Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.

Cite as: BuildingCensus, “9850 Key West, Montgomery County, Maryland — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/montgomery-county/9850-key-west-f9f60075 (data as of October 2, 2026).