Aspen, CO · Reviewed November 2026

Aspen Building IQ compliance, filed for you

The Aspen Energy and Water Benchmarking Ordinance (Building IQ) requires covered buildings to report energy and water use every year. We gather the data, check it, and file it — usually within a week.

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Who’s covered

Commercial buildings of 5,000 sq ft or more and multifamily buildings of 15,000 sq ft or more (since 2025), plus city buildings.

Annual deadline

June 1 for the previous calendar year.

Verification

No routine third-party verification — but the program runs its own data checks, so accuracy still matters.

Penalties

$100 for a first offense, $200 for a second, then a court appearance.

What to report

All energy and water used by the whole building — including tenant spaces — for January 1 to December 31:

Electricity — every meter serving the building
Natural gas
District steam, hot or chilled water, if you have it
Delivered fuels (oil, diesel, propane) — all delivery receipts for the year
On-site solar production, if any
Water — whole-building water use

Leave out backup generator fuel. Note any meters added or removed during the year.

Good to know

Colorado’s statewide program also applies to buildings of 50,000+ sq ft.

What we’ll need from you

Building address, plus any utility service addresses that differ from it
Gross floor area for the whole building and each use (office, retail, residential…), number of units and year built
Your Aspen Building ID (we can look it up)
Utility data for the full calendar year, January 1 – December 31 (usually 13 months of bills)
If tenants pay their own utilities: whole-building (aggregated) data from the utility, or signed tenant authorization forms
Access to your ENERGY STAR Portfolio Manager account, if you have one
Any notice or letter you received about this law

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FAQ

Aspen Building IQ questions

When is the Aspen Building IQ deadline?

Reports are normally due June 1 each year, covering the previous calendar year’s energy and water use.

Does Aspen Building IQ apply to my building?

Commercial buildings of 5,000 sq ft or more and multifamily buildings of 15,000 sq ft or more (since 2025), plus city buildings. Exemptions are limited — if you’re not sure, send us the address and we’ll check.

What happens if I miss it?

$100 for a first offense, $200 for a second, then a court appearance. If you’ve already missed the deadline, we can usually get you filed quickly and help you respond to any notice.

Official program information: Aspen Building IQ website. Requirements change — we confirm current rules for every filing.

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