Avenel Business Park Building 209
Office in Montgomery County, MD · 209 Perry Parkway · 20877
At a glance
Avenel Business Park Building 209 is a 42,212-square-foot office building at 209 Perry Parkway in Montgomery County, Maryland, built in 1984. In its 2024 Montgomery County benchmarking disclosure it reported an ENERGY STAR score of 65 out of 100 (grade C), a site energy-use intensity of 40.6 kBtu/ft² and 150 tCO₂e of greenhouse-gas emissions. That score is higher than 43% of the 325 scored office buildings in Montgomery County.
Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 65 (band C) |
| Site EUI | 40.6 kBtu/ft² |
| Source EUI | 113.6 kBtu/ft² |
| GHG emissions | 150 tCO₂e |
| GHG intensity | — |
| Electricity | 502,116 kWh |
| Natural gas | 0 therms |
| Gross floor area | 42,212 sq ft |
| Source record | montgomery_county:4959443:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 65 | -5 | 40.6 kBtu/ft² | 150 tCO₂e |
| 2023 | 70 | 36.9 kBtu/ft² | 140 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.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 209 Perry Parkway
- State
- Maryland
- ZIP
- 20877
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 Avenel Business Park Building 209 compare with other office buildings in Montgomery County?
The latest disclosures cover 414 office buildings in Montgomery County, out of 1,766 buildings citywide. Avenel Business Park Building 209's ENERGY STAR score of 65 compares with an average of 63 across the 325 that report a score; it scores higher than 43% of them and lower than 55%. Its site EUI of 40.6 kBtu/ft² is about 39% below the average of 66.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 42,212 sq ft, it is about 68% below the average floor area of 132,356 sq ft for those buildings. It was built in 1984, 3 years earlier than the group's average year built (1987). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has Avenel Business Park Building 209's energy performance changed over time?
BuildingCensus holds 2 Montgomery County disclosures for Avenel Business Park Building 209, covering report years 2023–2024. Its ENERGY STAR score went from 70 in 2023 to 65 in 2024 (-5 points); its best year on file was 2023, at 70. Site EUI moved from 36.9 kBtu/ft² (2023) to 40.6 kBtu/ft² (2024), an 10% increase. Reported emissions went from 140 tCO₂e to 150 tCO₂e over the same span (up 7%).
What does an ENERGY STAR score of 65 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 65 means the building performs better than about 65% of its national peers. BuildingCensus bands the score into report-card grades; 65 falls in band C — below median (55–69). It sits 10 points below 75, the threshold for ENERGY STAR certification. 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. Avenel Business Park Building 209's 40.6 kBtu/ft² across 42,212 sq ft works out to about 1.7 billion Btu (502 MWh-equivalent) in 2024. Its source EUI of 113.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 502,116 kWh of electricity and 0 therms of natural gas for the year.
Which law requires Avenel Business Park Building 209 to report its energy use?
Avenel Business Park Building 209 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:4959443:2024). 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 office buildings in Montgomery County
- Msc· 42,076 sq ft · score 53 (D)
- Takoma Park Community Center· 41,892 sq ft · EUI 104.6 kBtu/ft²
- 7220 Wisconsin Avenue· 41,245 sq ft · score 86 (A)
- Jewish Social Service Agency· 41,090 sq ft · score 59 (C)
- Avenel Business Park Building 201& 203· 41,043 sq ft · score 91 (A)
- Bradley Arlington, Llc· 40,887 sq ft
- Office buildings in Montgomery County· 414 benchmarked
- All Montgomery County benchmarked buildings· Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21)
- Most efficient large buildings in Montgomery County
- Least efficient large buildings in Montgomery County
- Biggest emitters in Montgomery County
Frequently asked questions
What is Avenel Business Park Building 209's energy grade?
Avenel Business Park Building 209 scores 65 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 Montgomery County disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Avenel Business Park Building 209 use?
Its 2024 site energy-use intensity was 40.6 kBtu/ft² (113.6 kBtu/ft² source) across 42,212 sq ft, including 502,116 kWh of electricity and 0 therms of natural gas.
What are Avenel Business Park Building 209's carbon emissions?
Avenel Business Park Building 209 reported 150 tCO₂e of greenhouse-gas emissions for 2024.
Where is Avenel Business Park Building 209?
Avenel Business Park Building 209 is at 209 Perry Parkway, in Montgomery County, Maryland 20877.
How big is Avenel Business Park Building 209 and when was it built?
Avenel Business Park Building 209 has 42,212 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1984 as its year built. It is classed as office.
Is Avenel Business Park Building 209 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, “Avenel Business Park Building 209, Montgomery County, Maryland — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/montgomery-county/avenel-business-park-building-209-f6cfaac0 (data as of October 2, 2026).