Waterfront At Harbor Bay 1751
Office in California, CA · 1751 Harbor Bay Parkway, Alameda · 94502
At a glance
Waterfront At Harbor Bay 1751 is a 76,486-square-foot office building at 1751 Harbor Bay Parkway, Alameda in Alameda, California, built in 1997. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 84 out of 100 (grade B), a site energy-use intensity of 44.9 kBtu/ft² and 191 tCO₂e of greenhouse-gas emissions. That score is higher than 50% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 84 (band B) |
| Site EUI | 44.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 191 tCO₂e |
| GHG intensity | 2.5 kgCO₂e/ft² |
| Electricity | 612,269 kWh |
| Natural gas | 13,468 therms |
| Gross floor area | 76,486 sq ft |
| Source record | california:1429822:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 84 | +3 | 44.9 kBtu/ft² | 191 tCO₂e |
| 2021 | 81 | 47.6 kBtu/ft² | 209 tCO₂e |
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
- 1751 Harbor Bay Parkway, Alameda
- City
- California
- State
- California
- ZIP
- 94502
- Coordinates
- 37.72673, -122.24195
Within ~1 km
Nearby benchmarked buildings
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- 1310 Harbor Bay (Penumbra)score 92
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- 1650 Harbor Bay Parkwayscore 55
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- 1320 Harbor Bayscore 50
Office · 124,061 sq ft
- 1420 South Loop Llcscore 99
Office · 121,216 sq ft
Office · 118,125 sq ft
See also: most efficient in California · biggest emitters
How does Waterfront At Harbor Bay 1751 compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. Waterfront At Harbor Bay 1751's ENERGY STAR score of 84 compares with an average of 75 across the 4,912 that report a score; it scores higher than 50% of them and lower than 48%. Its site EUI of 44.9 kBtu/ft² is about 20% below the average of 56.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 2.5 kgCO₂e/ft² is about 31% below the group average of 3.6 kgCO₂e/ft².
At 76,486 sq ft, it is about half of the average floor area of 151,937 sq ft for those buildings. It was built in 1997, 12 years later than the group's average year built (1985). 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 Waterfront At Harbor Bay 1751's energy performance changed over time?
BuildingCensus holds 2 California disclosures for Waterfront At Harbor Bay 1751, covering report years 2021, 2024. Its ENERGY STAR score went from 81 in 2021 to 84 in 2024 (+3 points). Site EUI moved from 47.6 kBtu/ft² (2021) to 44.9 kBtu/ft² (2024), a 6% decrease. Reported emissions went from 209 tCO₂e to 191 tCO₂e over the same span (down 9%).
What does an ENERGY STAR score of 84 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 84 means the building performs better than about 84% of its national peers. BuildingCensus bands the score into report-card grades; 84 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 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. Waterfront At Harbor Bay 1751's 44.9 kBtu/ft² across 76,486 sq ft works out to about 3.4 billion Btu (1,006 MWh-equivalent) in 2024. The disclosure also reports 612,269 kWh of electricity and 13,468 therms of natural gas for the year.
Which law requires Waterfront At Harbor Bay 1751 to report its energy use?
Waterfront At Harbor Bay 1751 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 2024 disclosure (source record california:1429822:2024). 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 office buildings in California
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- 170 Columbus Ave· 76,431 sq ft · score 94 (A)
- Z431610 - Sunnyvale Bldg. D-600· 76,379 sq ft · EUI 17.2 kBtu/ft²
- Social Sciences Building· 76,369 sq ft · score 72 (B)
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- Office buildings in California· 6,214 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 Waterfront At Harbor Bay 1751's energy grade?
Waterfront At Harbor Bay 1751 scores 84 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Waterfront At Harbor Bay 1751 use?
Its 2024 site energy-use intensity was 44.9 kBtu/ft² across 76,486 sq ft, including 612,269 kWh of electricity and 13,468 therms of natural gas.
What are Waterfront At Harbor Bay 1751's carbon emissions?
Waterfront At Harbor Bay 1751 reported 191 tCO₂e of greenhouse-gas emissions (2.5 kgCO₂e/ft²) for 2024.
Where is Waterfront At Harbor Bay 1751?
Waterfront At Harbor Bay 1751 is at 1751 Harbor Bay Parkway, Alameda, in Alameda, California 94502. Its coordinates are 37.72673, -122.24195 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Waterfront At Harbor Bay 1751 and when was it built?
Waterfront At Harbor Bay 1751 has 76,486 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1997 as its year built. It is classed as office.
Is Waterfront At Harbor Bay 1751 covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2024 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, “Waterfront At Harbor Bay 1751, Alameda, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/waterfront-at-harbor-bay-1751-574477cd (data as of July 9, 2026).