Three21 (Th520)
Multifamily Housing in California, CA · 321 Oxford Way, Belmont · 94002
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 96 (band A) |
| Site EUI | 33.5 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 100 tCO₂e |
| GHG intensity | 1.9 kgCO₂e/ft² |
| Electricity | 172,398 kWh |
| Natural gas | 11,438 therms |
| Gross floor area | 51,750 sq ft |
| Source record | california:35876348:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 96 | -2 | 33.5 kBtu/ft² | 100 tCO₂e |
| 2023 | 98 | 31.0 kBtu/ft² | 94 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 owner listed in the disclosure.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 321 Oxford Way, Belmont
- City
- California
- State
- California
- ZIP
- 94002
- Coordinates
- 37.52764, -122.27270
Within ~1 km
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See also: most efficient in California · biggest emitters
Frequently asked questions
What is Three21 (Th520)'s energy grade?
Three21 (Th520) scores 96 out of 100 on ENERGY STAR — band A (High performer (85–100)) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Three21 (Th520) use?
Its 2024 site energy-use intensity was 33.5 kBtu/ft² across 51,750 sq ft, including 172,398 kWh of electricity and 11,438 therms of natural gas.
What are Three21 (Th520)'s carbon emissions?
Three21 (Th520) reported 100 tCO₂e of greenhouse-gas emissions (1.9 kgCO₂e/ft²) for 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.
Dataset updated . Source: Building Energy Benchmarking Program (statewide) disclosure, record california:35876348:2024.