St Mary Parish School
K-12 School in Montgomery County, MD · 520 Veirs Mill Rd · 20852
At a glance
St Mary Parish School is a 47,821-square-foot K-12 school at 520 Veirs Mill Rd in Montgomery County, Maryland, built in 1951. In its 2024 Montgomery County benchmarking disclosure it reported an ENERGY STAR score of 52 out of 100 (grade D), a site energy-use intensity of 54.6 kBtu/ft² and 182 tCO₂e of greenhouse-gas emissions. That score is higher than 39% of the 51 scored K-12 school buildings in Montgomery County.
Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 52 (band D) |
| Site EUI | 54.6 kBtu/ft² |
| Source EUI | 103.5 kBtu/ft² |
| GHG emissions | 182 tCO₂e |
| GHG intensity | — |
| Electricity | 369,256 kWh |
| Natural gas | 13,531 therms |
| Gross floor area | 47,821 sq ft |
| Source record | montgomery_county:5722123:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 52 | -1 | 54.6 kBtu/ft² | 182 tCO₂e |
| 2023 | 53 | 52.0 kBtu/ft² | 176 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
- 520 Veirs Mill Rd
- State
- Maryland
- ZIP
- 20852
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 St Mary Parish School compare with other K-12 school buildings in Montgomery County?
The latest disclosures cover 56 K-12 school buildings in Montgomery County, out of 1,766 buildings citywide. St Mary Parish School's ENERGY STAR score of 52 compares with an average of 56 across the 51 that report a score; it scores higher than 39% of them and lower than 57%. Its site EUI of 54.6 kBtu/ft² is roughly in line with the average of 50.5 kBtu/ft².
At 47,821 sq ft, it is about 36% below the average floor area of 74,897 sq ft for those buildings. It was built in 1951, 25 years earlier than the group's average year built (1976). Across all 24 jurisdictions BuildingCensus covers, the 6,548 K-12 school buildings average an ENERGY STAR score of 64 and a site EUI of 52.7 kBtu/ft².
How has St Mary Parish School's energy performance changed over time?
BuildingCensus holds 2 Montgomery County disclosures for St Mary Parish School, covering report years 2023–2024. Its ENERGY STAR score went from 53 in 2023 to 52 in 2024 (-1 points); its best year on file was 2023, at 53. Site EUI moved from 52.0 kBtu/ft² (2023) to 54.6 kBtu/ft² (2024), an 5% increase. Reported emissions went from 176 tCO₂e to 182 tCO₂e over the same span (up 4%).
What does an ENERGY STAR score of 52 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 52 means the building performs better than about 52% of its national peers. BuildingCensus bands the score into report-card grades; 52 falls in band D — lowest band (1–54). It sits 23 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. St Mary Parish School's 54.6 kBtu/ft² across 47,821 sq ft works out to about 2.6 billion Btu (765 MWh-equivalent) in 2024. Its source EUI of 103.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 369,256 kWh of electricity and 13,531 therms of natural gas for the year.
Which law requires St Mary Parish School to report its energy use?
St Mary Parish School 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:5722123:2024). 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 K-12 school buildings in Montgomery County
- St. Elizabeth Catholic Church· 47,382 sq ft · score 30 (D)
- Sc 03426398· 43,343 sq ft · score 14 (D)
- Ssfs - Pen Y Bryn Upper School· 42,200 sq ft · score 80 (B)
- Boehly Upper School· 42,022 sq ft · EUI 39.4 kBtu/ft²
- Montgomery Umc· 41,540 sq ft · score 99 (A)
- Freeman Lower School· 35,426 sq ft · score 64 (C)
- K-12 School buildings in Montgomery County· 56 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 St Mary Parish School's energy grade?
St Mary Parish School scores 52 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 Montgomery County disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does St Mary Parish School use?
Its 2024 site energy-use intensity was 54.6 kBtu/ft² (103.5 kBtu/ft² source) across 47,821 sq ft, including 369,256 kWh of electricity and 13,531 therms of natural gas.
What are St Mary Parish School's carbon emissions?
St Mary Parish School reported 182 tCO₂e of greenhouse-gas emissions for 2024.
Where is St Mary Parish School?
St Mary Parish School is at 520 Veirs Mill Rd, in Montgomery County, Maryland 20852.
How big is St Mary Parish School and when was it built?
St Mary Parish School has 47,821 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1951 as its year built. It is classed as K-12 school.
Is St Mary Parish School 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, “St Mary Parish School, Montgomery County, Maryland — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/montgomery-county/st-mary-parish-school-2472b125 (data as of October 2, 2026).