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Washington Tier 2 for small office buildings

Based on RCW 19.27A.250, WAC 194-50 and Commerce's Tier 2 guidance. Checked 31 Oct 2026.

Office buildings of 20,001 to 50,000 square feet are the core of Washington's Tier 2 rule. If you own or manage one, here is what applies and where office buildings typically get stuck.

The requirements

By 1 July 2027: benchmark in ENERGY STAR Portfolio Manager, develop and implement an Energy Management Plan and an O&M Program, complete Commerce's two Reporting Tools, and complete Forms A, B and C, with a Qualified Energy Manager signing. No energy-use target has to be met yet. Full checklist.

Where office buildings get stuck

Tenant metering

Tier 2 requires whole-building data. If tenants pay their own electricity, you still need their usage. Ask your utility for aggregated whole-building data or automatic upload to Portfolio Manager, rather than collecting every tenant's bills. Portfolio Manager guide.

The HVAC contract is most of your O&M Program

Most small offices already have a mechanical contractor servicing rooftop units or a boiler. Their service schedule, checklists and invoices are the core of an O&M Program and its implementation records. What usually needs adding: a full inventory with performance criteria, control settings to verify (setpoints and schedules), lighting controls, and a log that ties each visit to an inventory item. What Annex L requires.

Tenant improvements

The O&M rules require a process so tenant fit-outs are reviewed and replacement equipment and lighting meet code efficiency. A short clause in your fit-out approval process, and in new leases, usually covers it.

Schedules and after-hours use

Record actual operating hours, after-hours HVAC requests and weekend use in the plan. Hours affect the energy target and are where the cheapest savings usually are.

Who can be the QEM?

Your building engineer or property manager, if they have two years' experience operating commercial buildings and complete Commerce's free training, or your HVAC contractor's technician on the same basis. Otherwise hire a QEM for a fixed-fee review. QEM rules.

Money

A 40,000 sq ft office would receive about $12,000 from the Early Adopter Incentive once approved. Full-service vendors charge roughly $3,750 to $12,000 for buildings this size; the $690 kit drafts the documents for your team and QEM to finish. Cost comparison.

Related guides

All Tier 2 guides