Compliance for Office Buildings.
Offices are the largest group of covered buildings in Washington. Most of the difficulty isn’t the requirements — it’s tenancy: getting the energy data, handling fit-outs, and knowing what vacancy does to your numbers.
July 1, 2027
Your compliance deadline, then re-reporting every five years.
Coverage
Is Your Building Covered?
You’re covered if the building is more than 20,000 gross square feet. Above 50,000 square feet of office and other nonresidential floor area it moves into a larger-buildings program that adds an energy performance target you have to meet, so the threshold is worth measuring rather than estimating.
Gross floor area is measured between the exterior surfaces of the enclosing walls and includes lobbies, corridors, storage, mechanical rooms and elevator shafts. Parking garage area is excluded. Vacant space generally still counts toward the threshold even where it comes out of the target calculation.
This Applies To
Owners, Landlords and Property Managers.
Single-tenant and multi-tenant office buildings in Washington, professional and medical office space, and the property management companies that file on an owner’s behalf.
Requirements
Three Things to Compliance.
There is no performance target to hit. You calculate an energy use intensity target, report your actual performance against it, and that’s the whole obligation — no performance standard for these buildings takes effect before the end of the 2031 legislative session.
Benchmark
Twelve consecutive months of whole-building energy use in ENERGY STAR Portfolio Manager, producing your weather-normalized energy use intensity.
Energy Management Plan
Energy performance goals, your EUI target, annual comparison against it, and how you inform residents about efficient energy use.
O&M Program
An inventory of major systems, maintenance tasks, frequencies and who is responsible for them, per ASHRAE Standard 100-2018.
The binding constraint is twelve consecutive months of whole-building energy data, measured within two years of submission — there is no way to manufacture that history retroactively. Your O&M program, by contrast, only has to be implemented by your compliance date; you do not need to run it for a year first.
Tenancy
Where Multi-Tenant Buildings Get Complicated.
The requirements are the same whoever occupies the building. What differs in a leased office is who holds the data, who bears the cost, and what happens when a tenant changes their space.
Getting tenant data
You don’t have to negotiate for it. Under RCW 19.27A.170, an electric or gas utility must provide consumption data or aggregated monthly data on the owner’s request for any covered building with tenants — without requiring prior tenant consent.
Penalties stay with you
State law prohibits passing non-compliance penalties through to tenants, provided they give you access to usage data and physical space and are responsive. Commerce is explicit that failing to find a mutually agreeable time doesn’t count as unresponsive — and if you do seek relief on those grounds, you have to document how the tenant was unresponsive.
Tenant improvements
The standard asks the energy manager to consider a formal process ensuring fit-outs that change space use or move partitions — including partial-height ones — don’t change annual net energy use, unless the change is consistent with a change in the building’s target. Commerce suggests handling it in lease language rather than after the fact.
A change of use moves the target
Commerce’s own example: in western Washington, a building changing from administrative office to veterinary office sees its target rise from 63 to 90. The higher energy use is then justified — but only because the activity type changed, and only if you recalculate.
Vacant floor space
A building counts as unoccupied when 50 percent or more of conditioned floor area is unleased or otherwise vacant. Sustained across the twelve months before your compliance date, that can support an exemption.
But vacancy cuts two ways
Vacant floor area that is unheated, uncooled and unlit comes out of the target calculation — yet it may not be used to reduce total floor area for deciding whether you’re covered at all. Conditioned vacant space stays in the calculation unless you have twelve months of occupied-period data from within the previous two years.
The Stakes
What Non-compliance Costs.
The maximum administrative penalty is $0.30 per square foot of gross floor area, assessed every compliance period — every five years. On a 40,000 sq ft building that is roughly $12,000 a cycle, against $12,000 earned for doing the same work ahead of the deadline.
Miss the deadline and you’ll receive a notice with at least 30 days to cure. Respond within that window with documentation demonstrating compliance and fines are waived — and you may remain eligible to apply for the incentive. Respond without it, or elect to pay rather than comply, and you’re assessed the maximum and may lose that eligibility entirely. The penalty cannot be recovered from tenants.
Common Questions
Frequently Asked Questions.
The building owner. The obligation attaches to the building, not to its occupants, and it is the owner who files and whose building is assessed. Tenants have a supporting role the standard does contemplate: providing access to usage data and physical space, and being responsive to compliance needs.
Two different questions, with two different answers. Non-compliance penalties cannot be passed through to tenants — that is prohibited by statute. Ordinary compliance costs are not addressed by the standard at all, which makes recovery a question about your lease rather than about Clean Buildings. Worth having your counsel look at the operating-expense clause before assuming either way.
You don’t collect tenant bills. Under RCW 19.27A.170, an electric or gas utility must provide energy consumption data or aggregated monthly data on the owner’s request for any covered building with tenants, without requiring prior tenant consent. On written authorization, a qualifying utility must upload it directly to Portfolio Manager; a voluntarily participating utility may upload it, but must at minimum give you the monthly data you need to benchmark.
Possibly a great deal. A building is considered unoccupied when 50 percent or more of its conditioned floor area is not leased or is otherwise vacant. If that held throughout the twelve consecutive months before your compliance date, you may be able to apply for an exemption — which needs Commerce’s approval no later than 180 days before that date, so it is worth assessing early rather than discovering it late.
Administrative and professional offices carry a site energy target of 63 kBtu/ft²/yr in western Washington and 66 in the east, before adjustment for operating hours. Government offices sit slightly higher at 66 and 69, banks and financial offices at 69 and 71, and medical offices lower at 60 and 65. If your building or an addition was permitted on or after July 1, 2016, the target drops 15 percent for the qualifying floor area. You report against the number — you are not required to reach it.
Exactly on the boundary, which is why this is worth checking rather than assuming. Weekly hours count the hours the majority of workers are present — 8am to 6pm Monday to Friday is precisely 50, the top of the lowest band, where the multiplier is 0.8. One hour more moves you to 1.0 and raises your target by a quarter. Two points catch people out: if you run two shifts the hours are added together, not overlapped — a 9-to-5 plus a 5pm-to-1am shift is 80 hours — and seasonal variation is a weighted average, so six months at 50 and six at 40 comes to 45.
It can, and the standard asks you to consider a process for it rather than discover it afterwards. The rule directs the energy manager to consider a formal process ensuring tenant improvements that change space use or relocate partitions don’t change the building’s annual net energy use, except where that change is consistent with a change in the building’s energy target. Commerce’s suggestion is lease language prohibiting improvements that increase energy use unless justified by a change of building activity type.
As a mixed-use calculation: each space takes its own activity type’s target, weighted by floor area and operating hours. The spread matters — retail sits at 68 in western Washington against an office’s 63, but a restaurant is 361, so a ground-floor dining tenant can move your weighted target substantially. Several shortcuts exist — the three most useful being that where more than 75 percent of floor area is one activity type you may treat the building as single-use, uses under 10 percent of floor area can be folded into a similar type, and separately metered space without its own target and under 10 percent can be excluded. None of them changes your total floor area or which tier you fall under.
No. Hours when the property is occupied only by maintenance, security, cleaning crews or other support personnel are excluded, and so are weekends unless your organization treats them like weekdays — regular shifts of main employees, meetings scheduled, reception running as normal.
Setting your building up in ENERGY STAR Portfolio Manager and feeding it twelve consecutive months of whole-building energy data. Portfolio Manager calculates your weather-normalized energy use intensity — total energy divided by gross floor area, in kBtu per square foot per year. You then share the property with Commerce read-only, and the Clean Buildings Portal pulls the numbers through as Form C. Commerce recommends registering under a generic organizational account so the login survives a change of property manager.
It’s a living document the owner reviews and signs every year. It names an energy manager, and records your energy use in Portfolio Manager, your target, and an annual comparison against it. It also documents changes in occupancy, operating hours and equipment; how you inform occupants about efficient energy use; a training plan for building staff; a capital plan for replacing failed equipment with ENERGY STAR rated models; and a contact list. The O&M program sits inside it, as does your tenant-improvement process.
A Qualified Energy Manager, through the Clean Buildings Portal, using a Secure Access Washington account. A QEM is an individual, not a firm — someone who has completed Commerce’s Tier 2 training and then meets any one of three routes: two years of commercial building operations or energy management experience, a supervised full-time fellowship or internship of at least six months that produced a successful compliance application, or Building Operator Certification Level I. Anyone meeting the broader Qualified Person definition also qualifies. Because an owner can fill any role in the standard, a property manager who meets the definition can serve.
Still Not Sure?
Want the specifics for your building? Book a walkthrough and we’ll map it with you, or put your address into the Compliance Navigator for your tier, your deadline, and the property details behind them.