Carlsbad N1
Office in California, CA · 2502 Gateway Road, Carlsbad · 92009
At a glance
Carlsbad N1 is a 77,400-square-foot office building at 2502 Gateway Road, Carlsbad in Carlsbad, California, built in 2000. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 1 out of 100 (grade D), a site energy-use intensity of 172.8 kBtu/ft² and 875 tCO₂e of greenhouse-gas emissions. That score is higher than 0% 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 | 1 (band D) |
| Site EUI | 172.8 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 875 tCO₂e |
| GHG intensity | 11.3 kgCO₂e/ft² |
| Electricity | 3,628,597 kWh |
| Natural gas | 10,030 therms |
| Gross floor area | 77,400 sq ft |
| Source record | california:8470776:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 1 | ±0 | 172.8 kBtu/ft² | 875 tCO₂e |
| 2023 | 1 | -1 | 178.6 kBtu/ft² | 954 tCO₂e |
| 2022 | 2 | ±0 | 168.5 kBtu/ft² | 866 tCO₂e |
| 2021 | 2 | 159.5 kBtu/ft² | 738 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 2502 Gateway Road, Carlsbad
- City
- California
- State
- California
- ZIP
- 92009
- Coordinates
- 33.12751, -117.26532
Within ~1 km
Nearby benchmarked buildings
- W002331-Carlsbad Cascore 100
Wholesale Club/Supercenter · 122,231 sq ft
- Ca - Cldascore 65
Non-Refrigerated Warehouse · 109,000 sq ft
Non-Refrigerated Warehouse · 106,311 sq ft
Self-Storage Facility · 99,999 sq ft
Self-Storage Facility · 99,999 sq ft
- Carlsbad E3score 19
Office · 98,345 sq ft
See also: most efficient in California · biggest emitters
How does Carlsbad N1 compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. Carlsbad N1's ENERGY STAR score of 1 compares with an average of 75 across the 4,912 that report a score; it scores higher than 0% of them and lower than 97%. Its site EUI of 172.8 kBtu/ft² is about 206% above the average of 56.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 11.3 kgCO₂e/ft² is about 214% above the group average of 3.6 kgCO₂e/ft².
At 77,400 sq ft, it is about half of the average floor area of 151,937 sq ft for those buildings. It was built in 2000, 15 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 Carlsbad N1's energy performance changed over time?
BuildingCensus holds 4 California disclosures for Carlsbad N1, covering report years 2021–2024. Its ENERGY STAR score went from 2 in 2021 to 1 in 2024 (-1 points); its best year on file was 2021, at 2. Site EUI moved from 159.5 kBtu/ft² (2021) to 172.8 kBtu/ft² (2024), an 8% increase. Reported emissions went from 738 tCO₂e to 875 tCO₂e over the same span (up 19%).
What does an ENERGY STAR score of 1 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: 1 is the bottom of the scale. BuildingCensus bands the score into report-card grades; 1 falls in band D — lowest band (1–54). It sits 74 points below 75, the threshold for ENERGY STAR certification. 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. Carlsbad N1's 172.8 kBtu/ft² across 77,400 sq ft works out to about 13.4 billion Btu (3,920 MWh-equivalent) in 2024. The disclosure also reports 3,628,597 kWh of electricity and 10,030 therms of natural gas for the year.
Which law requires Carlsbad N1 to report its energy use?
Carlsbad N1 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:8470776:2024). 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
- 1690 - 1700 S El Camino Real· 77,334 sq ft · score 48 (D)
- 299 N. Euclid· 77,333 sq ft · score 81 (B)
- Pacific Sorrento, Llc· 77,309 sq ft · score 97 (A)
- 208 Utah· 77,284 sq ft · score 85 (A)
- 3100 S Harbor Blvd· 77,252 sq ft · score 97 (A)
- Whittier - 10015 Rose Hills Rd, Whittier, Ca 90601, Usa· 77,227 sq ft · score 97 (A)
- 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 Carlsbad N1's energy grade?
Carlsbad N1 scores 1 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Carlsbad N1 use?
Its 2024 site energy-use intensity was 172.8 kBtu/ft² across 77,400 sq ft, including 3,628,597 kWh of electricity and 10,030 therms of natural gas.
What are Carlsbad N1's carbon emissions?
Carlsbad N1 reported 875 tCO₂e of greenhouse-gas emissions (11.3 kgCO₂e/ft²) for 2024.
Where is Carlsbad N1?
Carlsbad N1 is at 2502 Gateway Road, Carlsbad, in Carlsbad, California 92009. Its coordinates are 33.12751, -117.26532 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Carlsbad N1 and when was it built?
Carlsbad N1 has 77,400 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2000 as its year built. It is classed as office.
Is Carlsbad N1 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).
Working with California building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Carlsbad N1, Carlsbad, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/carlsbad-n1-40443c81 (data as of July 9, 2026).