Mills Health Center
Hospital (General Medical & Surgical) in California, CA · 50 South San Mateo Drive, San Mateo · 94401
At a glance
Mills Health Center is a 74,800-square-foot hospital (general medical & surgical) at 50 South San Mateo Drive, San Mateo in San Mateo, California, built in 1900. In its 2018 California benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 99.8 kBtu/ft² and 452 tCO₂e of greenhouse-gas emissions. That score is higher than 86% of the 300 scored hospital (general medical & surgical) buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2018
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 99.8 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 452 tCO₂e |
| GHG intensity | 6.0 kgCO₂e/ft² |
| Electricity | 933,049 kWh |
| Natural gas | 42,825 therms |
| Gross floor area | 74,800 sq ft |
| Source record | california:5817757:2018 |
Compliance context
AB 802 (Public Resources Code §25402.10)
AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 50 South San Mateo Drive, San Mateo
- City
- California
- State
- California
- ZIP
- 94401
- Coordinates
- 37.56611, -122.32640
Within ~1 km
Nearby benchmarked buildings
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- Avery Mills Square L.P.score —
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- 400 South El Camino Realscore 56
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See also: most efficient in California · biggest emitters
How does Mills Health Center compare with other hospital (general medical & surgical) buildings in California?
The latest disclosures cover 329 hospital (general medical & surgical) buildings in California, out of 40,029 buildings citywide. Mills Health Center's ENERGY STAR score of 100 compares with an average of 59 across the 300 that report a score; it scores higher than 86% of them. Its site EUI of 99.8 kBtu/ft² is about 58% below the average of 238.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 6.0 kgCO₂e/ft² is about 57% below the group average of 14.1 kgCO₂e/ft².
At 74,800 sq ft, it is about 83% below the average floor area of 432,386 sq ft for those buildings. It was built in 1900, 77 years earlier than the group's average year built (1978). Across all 24 jurisdictions BuildingCensus covers, the 748 hospital (general medical & surgical) buildings average an ENERGY STAR score of 59 and a site EUI of 238.7 kBtu/ft².
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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 California, 65% 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. Mills Health Center's 99.8 kBtu/ft² across 74,800 sq ft works out to about 7.5 billion Btu (2,188 MWh-equivalent) in 2018. The disclosure also reports 933,049 kWh of electricity and 42,825 therms of natural gas for the year.
Which law requires Mills Health Center to report its energy use?
Mills Health Center reports under AB 802 (Public Resources Code §25402.10), the legal basis of California's Building Energy Benchmarking Program (statewide), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2018 disclosure (source record california:5817757:2018). AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
More hospital (general medical & surgical) buildings in California
- Adventist-Ahhm-1 Marcela Dr· 74,000 sq ft · score 13 (D)
- Lbracc 201 Alabama· 72,400 sq ft · score 100 (A)
- Montclair Hospital Medical Center· 71,000 sq ft · score 3 (D)
- Adventist-Ahrd-372 W. Cypress Ave· 68,520 sq ft · score 72 (B)
- Adventist-Ahdl-1401 Garces Hwy· 68,485 sq ft · score 81 (B)
- Ridgecrest Regional Hospital· 67,026 sq ft · score 77 (B)
- Hospital (General Medical & Surgical) buildings in California· 329 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
- Most efficient large buildings in California
- Least efficient large buildings in California
- Biggest emitters in California
Frequently asked questions
What is Mills Health Center's energy grade?
Mills Health Center scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2018 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Mills Health Center use?
Its 2018 site energy-use intensity was 99.8 kBtu/ft² across 74,800 sq ft, including 933,049 kWh of electricity and 42,825 therms of natural gas.
What are Mills Health Center's carbon emissions?
Mills Health Center reported 452 tCO₂e of greenhouse-gas emissions (6.0 kgCO₂e/ft²) for 2018.
Where is Mills Health Center?
Mills Health Center is at 50 South San Mateo Drive, San Mateo, in San Mateo, California 94401. Its coordinates are 37.56611, -122.32640 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Mills Health Center and when was it built?
Mills Health Center has 74,800 sq ft of gross floor area, as reported in its 2018 disclosure. The disclosure lists 1900 as its year built. It is classed as hospital (general medical & surgical).
Is Mills Health Center covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2018 Building Energy Benchmarking Program (statewide) disclosure, which lists the buildings reporting under AB 802 (Public Resources Code §25402.10).
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About this data
Source: Building Energy Benchmarking Program (statewide) (AB 802 (Public Resources Code §25402.10)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Mills Health Center, San Mateo, California — 2018 benchmarking disclosure”, https://buildingcensus.com/buildings/california/mills-health-center-ba877664 (data as of July 9, 2026).