Marriott San Diego Gaslamp
Hotel in California, CA · 660 K Street, San Diego · 92101
At a glance
Marriott San Diego Gaslamp is a 315,500-square-foot hotel at 660 K Street, San Diego in San Diego, California, built in 1985. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 87 out of 100 (grade A), a site energy-use intensity of 57.5 kBtu/ft² and 1,074 tCO₂e of greenhouse-gas emissions. That score is higher than 57% of the 1,525 scored hotel buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 87 (band A) |
| Site EUI | 57.5 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 1,074 tCO₂e |
| GHG intensity | 3.4 kgCO₂e/ft² |
| Electricity | 2,806,019 kWh |
| Gross floor area | 315,500 sq ft |
| Source record | california:26698563:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 87 | 57.5 kBtu/ft² | 1,074 tCO₂e | |
| 2023 | — | 55.4 kBtu/ft² | — | |
| 2022 | 98 | 29.1 kBtu/ft² | 634 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
- 660 K Street, San Diego
- City
- California
- State
- California
- ZIP
- 92101
- Coordinates
- 32.70862, -117.15851
Within ~1 km
Nearby benchmarked buildings
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- San Diego Convention Centerscore —
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- San Diego Convention Centerscore —
Convention Center · 1,763,876 sq ft
- Petco Parkscore —
Stadium (Open) · 1,600,000 sq ft
- Petco Park 3Bscore —
Stadium (Open) · 1,600,000 sq ft
Hotel · 1,412,419 sq ft
See also: most efficient in California · biggest emitters
How does Marriott San Diego Gaslamp compare with other hotel buildings in California?
The latest disclosures cover 1,599 hotel buildings in California, out of 40,029 buildings citywide. Marriott San Diego Gaslamp's ENERGY STAR score of 87 compares with an average of 74 across the 1,525 that report a score; it scores higher than 57% of them and lower than 41%. Its site EUI of 57.5 kBtu/ft² is about 12% below the average of 65.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.4 kgCO₂e/ft² is about 15% below the group average of 4.0 kgCO₂e/ft².
At 315,500 sq ft, it is about 88% above the average floor area of 167,786 sq ft for those buildings. It was built in 1985, 3 years earlier than the group's average year built (1988). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².
How has Marriott San Diego Gaslamp's energy performance changed over time?
BuildingCensus holds 3 California disclosures for Marriott San Diego Gaslamp, covering report years 2022–2024. Its ENERGY STAR score went from 98 in 2022 to 87 in 2024 (-11 points); its best year on file was 2022, at 98. Site EUI moved from 29.1 kBtu/ft² (2022) to 57.5 kBtu/ft² (2024), an 98% increase. Reported emissions went from 634 tCO₂e to 1,074 tCO₂e over the same span (up 69%).
What does an ENERGY STAR score of 87 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 87 means the building performs better than about 87% of its national peers. BuildingCensus bands the score into report-card grades; 87 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. Marriott San Diego Gaslamp's 57.5 kBtu/ft² across 315,500 sq ft works out to about 18.1 billion Btu (5,317 MWh-equivalent) in 2024. The disclosure also reports 2,806,019 kWh of electricity for the year.
Which law requires Marriott San Diego Gaslamp to report its energy use?
Marriott San Diego Gaslamp 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:26698563:2024). 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 hotel buildings in California
- Marriott Mission Valley· 315,182 sq ft · score 76 (B)
- Embassy Suites By Hilton San Francisco Airport Waterfront· 314,000 sq ft · score 98 (A)
- Westdrift Manhattan Beach, Autograph Collection· 311,228 sq ft · score 70 (B)
- Walnut Creek Marriott· 311,098 sq ft · score 76 (B)
- 57F39-Snasj-San Juan Capistrano· 310,000 sq ft · score 100 (A)
- 4330-Four Points Lax· 306,290 sq ft · score 53 (D)
- Hotel buildings in California· 1,599 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 Marriott San Diego Gaslamp's energy grade?
Marriott San Diego Gaslamp scores 87 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 Marriott San Diego Gaslamp use?
Its 2024 site energy-use intensity was 57.5 kBtu/ft² across 315,500 sq ft, including 2,806,019 kWh of electricity.
What are Marriott San Diego Gaslamp's carbon emissions?
Marriott San Diego Gaslamp reported 1,074 tCO₂e of greenhouse-gas emissions (3.4 kgCO₂e/ft²) for 2024.
Where is Marriott San Diego Gaslamp?
Marriott San Diego Gaslamp is at 660 K Street, San Diego, in San Diego, California 92101. Its coordinates are 32.70862, -117.15851 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Marriott San Diego Gaslamp and when was it built?
Marriott San Diego Gaslamp has 315,500 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1985 as its year built. It is classed as hotel.
Is Marriott San Diego Gaslamp 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, “Marriott San Diego Gaslamp, San Diego, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/marriott-san-diego-gaslamp-5ebe3c85 (data as of July 9, 2026).