At a glance
227 N 1St St is a 28,056-square-foot office building in San José, California, built in 1960. In its 2024 San José benchmarking disclosure it reported a site energy-use intensity of 2.1 kBtu/ft² and 4 tCO₂e of greenhouse-gas emissions.
San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 2.1 kBtu/ft² |
| Source EUI | 6.0 kBtu/ft² |
| GHG emissions | 4 tCO₂e |
| GHG intensity | — |
| Electricity | 17,571 kWh |
| Water use | 9 kgal |
| Gross floor area | 28,056 sq ft |
| Source record | san_jose:0897-0-00:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 2.1 kBtu/ft² | 4 tCO₂e | |
| 2023 | — | 2.3 kBtu/ft² | 5 tCO₂e | |
| 2022 | — | 1.8 kBtu/ft² | 3 tCO₂e | |
| 2021 | — | 1.4 kBtu/ft² | — | |
| 2020 | — | 1.1 kBtu/ft² | — | |
| 2019 | — | — | — |
Compliance context
San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance)
San José's BPO requires buildings over 20,000 sq ft to benchmark annually and complete beyond-benchmarking performance improvements on a rolling schedule.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 227 N 1St St
- City
- San José
- State
- California
- ZIP
- 95113
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in San José · biggest emitters
How does 227 N 1St St compare with other office buildings in San José?
The latest disclosures cover 408 office buildings in San José, out of 1,790 buildings citywide. Its site EUI of 2.1 kBtu/ft² is about 97% below the average of 64.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 28,056 sq ft, it is about 71% below the average floor area of 95,555 sq ft for those buildings. It was built in 1960, 26 years earlier than the group's average year built (1986). 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 227 N 1St St's energy performance changed over time?
BuildingCensus holds 6 San José disclosures for 227 N 1St St, covering report years 2019–2024. Site EUI moved from 1.1 kBtu/ft² (2020) to 2.1 kBtu/ft² (2024), an 91% increase. Reported emissions went from 3 tCO₂e to 4 tCO₂e over the same span (up 17%).
What does a site EUI of 2.1 kBtu/ft² mean?
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. 227 N 1St St's 2.1 kBtu/ft² across 28,056 sq ft works out to about 0.1 billion Btu (17 MWh-equivalent) in 2024. Its source EUI of 6.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 17,571 kWh of electricity and 9 thousand gallons of water for the year.
Which law requires 227 N 1St St to report its energy use?
227 N 1St St reports under San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance), the legal basis of San José's Energy and Water Building Performance Ordinance, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record san_jose:0897-0-00:2024). San José's BPO requires buildings over 20,000 sq ft to benchmark annually and complete beyond-benchmarking performance improvements on a rolling schedule.
More office buildings in San José
- 1975 Hamilton Ave· 28,018 sq ft · score 64 (C)
- 641-645 River Oaks Pkwy· 27,652 sq ft · score 94 (A)
- 631 River Oaks Pkwy· 27,629 sq ft · score 77 (B)
- 5589 Winfield Blvd· 27,467 sq ft · score 74 (B)
- 110 W Taylor St· 27,142 sq ft · score 78 (B)
- 2081 Bering Dr· 26,994 sq ft · score 89 (A)
- Office buildings in San José· 408 benchmarked
- All San José benchmarked buildings· San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance)
- Most efficient large buildings in San José
- Least efficient large buildings in San José
- Biggest emitters in San José
Frequently asked questions
What is 227 N 1St St's energy grade?
227 N 1St St did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 2.1 kBtu/ft².
How much energy does 227 N 1St St use?
Its 2024 site energy-use intensity was 2.1 kBtu/ft² (6.0 kBtu/ft² source) across 28,056 sq ft, including 17,571 kWh of electricity.
What are 227 N 1St St's carbon emissions?
227 N 1St St reported 4 tCO₂e of greenhouse-gas emissions for 2024.
Where is 227 N 1St St?
227 N 1St St is in San José, California 95113.
How big is 227 N 1St St and when was it built?
227 N 1St St has 28,056 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1960 as its year built. It is classed as office.
Is 227 N 1St St covered by San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance)?
Yes — it appears in the 2024 Energy and Water Building Performance Ordinance disclosure, which lists the buildings reporting under San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance).
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About this data
Source: Energy and Water Building Performance Ordinance (San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “227 N 1St St, San José, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/san-jose/227-n-1st-st-42322775 (data as of July 9, 2026).