Sawyer Flats (Sw008)
Multifamily Housing in Montgomery County, MD · 9806 Mahogany Dr · 20878
At a glance
Sawyer Flats (Sw008) is a 649,894-square-foot multifamily housing building at 9806 Mahogany Dr in Montgomery County, Maryland, built in 1989. In its 2024 Montgomery County benchmarking disclosure it reported an ENERGY STAR score of 89 out of 100 (grade A), a site energy-use intensity of 31.6 kBtu/ft² and 1,802 tCO₂e of greenhouse-gas emissions. That score is higher than 51% of the 514 scored multifamily housing buildings in Montgomery County.
Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 89 (band A) |
| Site EUI | 31.6 kBtu/ft² |
| Source EUI | 88.5 kBtu/ft² |
| GHG emissions | 1,802 tCO₂e |
| GHG intensity | — |
| Electricity | 6,018,181 kWh |
| Natural gas | 0 therms |
| Gross floor area | 649,894 sq ft |
| Source record | montgomery_county:22887002:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 89 | +2 | 31.6 kBtu/ft² | 1,802 tCO₂e |
| 2023 | 87 | 30.8 kBtu/ft² | 1,799 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
- 9806 Mahogany Dr
- State
- Maryland
- ZIP
- 20878
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 Sawyer Flats (Sw008) compare with other multifamily housing buildings in Montgomery County?
The latest disclosures cover 553 multifamily housing buildings in Montgomery County, out of 1,766 buildings citywide. Sawyer Flats (Sw008)'s ENERGY STAR score of 89 compares with an average of 80 across the 514 that report a score; it scores higher than 51% of them and lower than 46%. Its site EUI of 31.6 kBtu/ft² is about 27% below the average of 43.2 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 649,894 sq ft, it is about 227% above the average floor area of 198,668 sq ft for those buildings. Its 1989 construction date is close to the group's average year built (1989). 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 Sawyer Flats (Sw008)'s energy performance changed over time?
BuildingCensus holds 2 Montgomery County disclosures for Sawyer Flats (Sw008), covering report years 2023–2024. Its ENERGY STAR score went from 87 in 2023 to 89 in 2024 (+2 points). Site EUI moved from 30.8 kBtu/ft² (2023) to 31.6 kBtu/ft² (2024), an 3% increase. Reported emissions went from 1,799 tCO₂e to 1,802 tCO₂e over the same span (up 0%).
What does an ENERGY STAR score of 89 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 89 means the building performs better than about 89% of its national peers. BuildingCensus bands the score into report-card grades; 89 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 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. Sawyer Flats (Sw008)'s 31.6 kBtu/ft² across 649,894 sq ft works out to about 20.5 billion Btu (6,019 MWh-equivalent) in 2024. Its source EUI of 88.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 6,018,181 kWh of electricity and 0 therms of natural gas for the year.
Which law requires Sawyer Flats (Sw008) to report its energy use?
Sawyer Flats (Sw008) 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:22887002:2024). 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 multifamily housing buildings in Montgomery County
- The Grand· 640,203 sq ft · score 84 (B)
- Md015_Avalon At Grosvenor Station (Mv41)· 626,132 sq ft · score 93 (A)
- Potomac Oaks Condominium· 602,796 sq ft · score 25 (D)
- Heron'S Cove Condominium· 578,318 sq ft · score 69 (C)
- The Elizabeth Condominium· 526,084 sq ft · score 65 (C)
- Veridian - 19234· 524,148 sq ft · score 97 (A)
- Multifamily Housing buildings in Montgomery County· 553 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 Sawyer Flats (Sw008)'s energy grade?
Sawyer Flats (Sw008) scores 89 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 Montgomery County disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Sawyer Flats (Sw008) use?
Its 2024 site energy-use intensity was 31.6 kBtu/ft² (88.5 kBtu/ft² source) across 649,894 sq ft, including 6,018,181 kWh of electricity and 0 therms of natural gas.
What are Sawyer Flats (Sw008)'s carbon emissions?
Sawyer Flats (Sw008) reported 1,802 tCO₂e of greenhouse-gas emissions for 2024.
Where is Sawyer Flats (Sw008)?
Sawyer Flats (Sw008) is at 9806 Mahogany Dr, in Montgomery County, Maryland 20878.
How big is Sawyer Flats (Sw008) and when was it built?
Sawyer Flats (Sw008) has 649,894 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1989 as its year built. It is classed as multifamily housing.
Is Sawyer Flats (Sw008) 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, “Sawyer Flats (Sw008), Montgomery County, Maryland — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/montgomery-county/sawyer-flats-sw008-5cf35a5e (data as of October 2, 2026).