Seattle Building Energy Benchmarking & Building Emissions Performance Standard (BEPS)

Who's covered

Seattle's energy benchmarking ordinance applies to nonresidential and multifamily buildings over 20,000 square feet of gross floor area, anywhere in the city. That "over" is exclusive -- a building at exactly 20,000 sq ft is not covered. This is a corrected reading: earlier drafts of this registry entry (and some third-party summaries still circulating) treat 20,000 sq ft as an inclusive floor, but the city's own program page describes coverage as buildings "over" the threshold, and we've updated our records accordingly. If your building sits right at 20,000 sq ft, don't assume you're in scope -- and don't assume you're out of scope at 20,001.

There are two genuinely different obligations layered on top of each other here, and this guide covers both:

1. Benchmarking -- the annual, already-binding requirement described above: report whole- building energy use every year, no performance target attached.
2. The Building Emissions Performance Standard (BEPS) -- a newer requirement that sets greenhouse-gas-intensity targets for the same population of buildings, phasing in on its own schedule (see Key dates below). Benchmarking data feeds BEPS reporting, but the two are legally distinct, and BEPS penalties are structured completely differently from benchmarking penalties.

A third, older requirement -- Building Tune-Ups -- applies separately to nonresidential buildings 50,000 sq ft and larger, on its own 5-year cycle. Tune-Ups predate BEPS and aren't the same program; a building can owe a Tune-Up in a year it owes nothing new under BEPS, and vice versa. We don't detail the Tune-Up scope of work in this guide (it's a distinct ordinance with its own technical requirements), but if your building is a large nonresidential property, budget for it as a recurring obligation independent of the two reporting regimes above.

Key dates

June 1, every year, for the prior calendar year's data -- the standing benchmarking deadline, submitted by responding to the City's ENERGY STAR Portfolio Manager (ESPM) data request to the Office of Sustainability & Environment (OSE).

Seattle is mid-transition on the submission side. The city has launched a new Seattle Building & Energy Portal, which went live July 16, 2026, and -- to give owners room to move onto it -- is waiving failure-to-report fines for 2025 calendar-year data during the changeover. That waiver is specific to the fine for not reporting at all; it isn't a blanket amnesty on every benchmarking obligation, and we'd expect the city to resume normal enforcement once the portal transition settles. Don't read "fines are waived this cycle" as "compliance doesn't matter this cycle" -- keep filing on the normal schedule regardless.

BEPS reporting phases in by building size, and the city's own program page is direct about the shape of it even where it's light on exact cutoff dates: "the largest buildings' first requirements start in 2027, while the smallest have until 2030." Our broader program survey, built earlier in this project from Seattle's public materials, pins that down further -- first BEPS reporting October 1, 2027 for buildings 90,000 sq ft and up, phasing down to 20,000 sq ft by 2030, with GHG-intensity targets (as opposed to just reporting) not becoming enforceable with penalties until 2031. We're carrying that detail forward here because it's useful for planning, but we're flagging it plainly: our most recent verification pass did not independently re-confirm the exact October 1 / 90,000 sq ft / 2031 figures against a live city source, and Seattle's own BEPS rulemaking was still open as of 2026. Treat the 2027-2030 phase-in shape as solid and the specific dates as "best available, worth double-checking closer to your building's likely cohort."

One more BEPS mechanic worth knowing ahead of time: once your building's benchmarking-verification year arrives, the city requires that verification to be conducted by a Qualified Person -- not a self-certification by the owner. Line up that relationship before your cohort's window opens rather than scrambling for one against a deadline.

Penalties

Benchmarking non-compliance is a flat annual fine that scales with building size, not a per-day accrual:

Building size	Annual fine for failure to report
20,000 - 49,999 sq ft	$2,000
50,000 sq ft and larger	$4,000

That's just the failure-to-report fine. Submitting inaccurate or incomplete data -- or failing to disclose energy performance when the city requests it -- draws its own $500 fine, separate from and in addition to the size-based failure-to-report figure. Getting a report in on time doesn't fully protect you if the data in it is wrong.

BEPS penalties are structured completely differently once they bind (2031, on the timeline above): our program survey lists $10 per sq ft for nonresidential buildings, $7.50 per sq ft for multifamily, and $2.50 per sq ft for qualifying low-income housing, assessed per 5-year compliance cycle rather than annually. As with the phase-in dates above, we're presenting these per-sq-ft figures as carried forward from our broader survey research rather than independently re-confirmed against a live city source in the most recent pass -- if your building is anywhere close to a BEPS cohort, verify the current figures directly with OSE before budgeting against them.

Step-by-step: how to comply

1. Confirm your building clears 20,000 sq ft (strictly more than, not "20,000 or more") and is nonresidential or multifamily. We check this against the property details you give us and flag anything sitting right at the boundary.
2. Set up the property in ENERGY STAR Portfolio Manager with a "Seattle" Standard ID and enter 12 full months of whole-building energy data for the prior calendar year. We handle this setup and the annual data entry once your utility feed is live.
3. Respond to the City's ESPM data request before June 1. This is the part we fully automate -- but during the current portal transition, confirm with us whether your building's submission needs to move through the new Seattle Building & Energy Portal instead of (or in addition to) the ESPM data request, since that mechanic is actively changing.
4. If your building is nonresidential and 50,000 sq ft or larger, track your Building Tune-Up due year separately -- it's a different 5-year cycle from both benchmarking and BEPS. We flag your building's likely Tune-Up window, but the technical scope of work has to be arranged with a qualified professional, the same as any retro-commissioning engagement.
5. Once your BEPS reporting cohort is confirmed, line up a Qualified Person for benchmarking verification well ahead of the deadline. We'll alert you as your cohort's window approaches based on the phase-in schedule above -- but engaging and paying that Qualified Person is yours to arrange, the same as any licensed-professional sign-off elsewhere in this registry.

What we handle

Seattle is a clean, single ESPM-based filing for most owners today -- the complexity ahead is in BEPS's phase-in and its Qualified Person verification requirement, not in this year's benchmarking report. Run the compliance checker below to confirm your building's covered status under the corrected, exclusive 20,000 sq ft threshold, then join the waitlist. What stays yours: authorizing utility data access, arranging Building Tune-Up work if your building is 50,000 sq ft or larger, and engaging a Qualified Person once your BEPS verification year arrives.

Frequently asked questions

Is a building at exactly 20,000 sq ft covered?

No. Seattle's threshold is "over" 20,000 sq ft, which is exclusive -- exactly 20,000 sq ft is not covered, though 20,001 sq ft is. This is a corrected reading of the ordinance; treat any source that describes the threshold as "20,000 sq ft and up" as out of date.

Is the benchmarking fine the same for every building size?

No. It's $2,000 a year for buildings from 20,000 up to 49,999 sq ft, and $4,000 a year for buildings 50,000 sq ft and larger. Both are flat annual figures, not a per-day accrual.

Are 2025-cycle benchmarking fines actually being waived?

Yes, specifically the failure-to-report fine for 2025 calendar-year data, while the city transitions owners onto the new Seattle Building & Energy Portal that launched July 16, 2026. That's a targeted waiver tied to the portal changeover, not a general pause on the ordinance -- keep reporting on schedule.

Is the Building Tune-Up requirement the same thing as BEPS?

No, they're separate ordinances. Tune-Ups apply to nonresidential buildings 50,000 sq ft and up on their own 5-year cycle and predate BEPS entirely. BEPS applies more broadly (down to 20,000 sq ft by its final phase-in year) and is about GHG-intensity targets, not a one-time retro-commissioning-style tune-up.

When does my building actually have to start reporting under BEPS?

By size, on a schedule the city describes as starting with the largest buildings in 2027 and extending down to the smallest covered buildings by 2030. Our more granular figures (an October 1, 2027 first-reporting date for buildings 90,000 sq ft and up, phasing to 20,000 sq ft by 2030) come from our broader program survey and haven't been independently re-confirmed against a live city source in our most recent pass -- worth a direct check with OSE as your likely cohort year approaches.

Do BEPS emissions targets apply the moment my building starts reporting?

No -- reporting and enforceable targets are different milestones. Reporting phases in from 2027 to 2030 by size, but the GHG-intensity targets themselves don't become penalty-bearing until 2031 under the schedule we're tracking, and Seattle's BEPS rulemaking was still open as of 2026.

What if my benchmarking report has errors instead of being late?

That draws a separate $500 fine, on top of (not instead of) the size-based failure-to-report fine if the errors are severe enough to count as non-submission. Accuracy and timeliness are enforced as two different things.