---
type: "Bill"
title: "A bill for an act relating to energy benchmarking requirements for private properties."
description: "A bill for an act relating to energy benchmarking requirements for private properties."
jurisdiction: "us/states/ia"
legislature: "Iowa General Assembly"
session: "2023-2024"
identifier: "HF 605"
citation: "Iowa HF 605 (2023-2024)"
classification: ["bill"]
subjects: ["building codes", "buildings", "city government", "county government", "energy use", "ordinances", "property"]
status: "enacted"
primary_sponsors: []
version_count: 4
action_count: 19
vote_count: 2
first_action: "2023-03-03"
last_action: "2023-06-01"
source: "openstates"
source_identifier: "ocd-bill/48bb60db-e67c-4d6c-9224-64edaaaace5c"
source_url: "https://www.legis.iowa.gov/legislation/billTracking/billHistory?billName=HF 605&ga=90"
source_hash: "2cba119a03c3395c219b5487e0ff7b8b8b7aa933ffc9be9d1fd982adfa548b5e"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ia"]
---

# Iowa HF 605 (2023-2024) — A bill for an act relating to energy benchmarking requirements for private properties.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Introduced** (filed) — [source](https://www.legis.iowa.gov/docs/publications/LGI/90/attachments/HF605.html)
2. **Amendment S-3109** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/90/S3109.pdf)
3. **Signed Enrolled Bill (PDF)** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/LGE/90/Attachments/HF605_GovLetter.pdf)
4. **Enrolled** (enrolled) — [source](https://www.legis.iowa.gov/docs/publications/LGE/90/attachments/HF605.html)

## Votes

- Shall the bill pass? — **31–16** (pass) · upper
- Shall the bill pass? — **61–34** (pass) · lower

## Sponsors

- COMMITTEE ON COMMERCE — primary (organization)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2023-03-03** Introduced, placed on calendar. `introduction`
- **2023-03-22** Passed House, yeas 61, nays 34. `passage`
- **2023-03-22** Immediate message.
- **2023-03-23** Message from House.
- **2023-03-23** Read first time, referred to Commerce. `reading-1`
- **2023-03-27** Subcommittee: Webster, Jochum, and Klimesh.
- **2023-03-28** Referred to State Government. `referral-committee`
- **2023-03-28** Subcommittee: Webster, Jochum, and Koelker.
- **2023-03-28** Subcommittee Meeting: 03/29/2023 10:30AM Room 315.
- **2023-03-29** Subcommittee recommends passage. []. `committee-passage-favorable`
- **2023-03-30** Committee report, recommending amendment and passage. `committee-passage`
- **2023-03-30** Amendment S-3109 filed. `amendment-introduction`
- **2023-04-06** Placed on calendar under unfinished business.
- **2023-05-03** Amendment S-3109 withdrawn.
- **2023-05-03** Passed Senate, yeas 31, nays 16. `passage`
- **2023-05-03** Immediate message.
- **2023-05-03** Message from Senate.
- **2023-05-09** Reported correctly enrolled, signed by Speaker and President, and sent to Governor.
- **2023-06-01** Signed by Governor. `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/48bb60db-e67c-4d6c-9224-64edaaaace5c`. Confidence: reported (aggregated from official Iowa legislature records).