---
type: "Bill"
title: "AN ACT TO AMEND TITLE 16 OF THE DELAWARE CODE RELATING TO COUNTY BUILDING CODES."
description: "This Act requires new schools and state buildings over 50,000 square feet to meet certain requirements to ensure that the building's roof is able to support solar energy infrastructure."
jurisdiction: "us/states/de"
legislature: "Delaware General Assembly"
session: "152"
identifier: "HB 402"
citation: "Delaware HB 402 (152)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Edward S. Osienski", "Eric Morrison", "John \"Jack\" Walsh", "Paul S. Baumbach", "Peter C. Schwartzkopf", "Russell Huxtable", "Sean Matthews", "Stell Parker Selby", "Trey Paradee", "William Bush"]
version_count: 1
action_count: 7
vote_count: 2
first_action: "2024-05-16"
last_action: "2024-09-05"
source: "openstates"
source_identifier: "ocd-bill/c072af57-5702-4e2d-ad05-c1ca4d9f817a"
source_url: "https://legis.delaware.gov/BillDetail?LegislationId=141402"
source_hash: "0d5349f496ff9e0211a7334061221a43887f87130ab46fb4791b878775de8a60"
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-de"]
---

# Delaware HB 402 (152) — AN ACT TO AMEND TITLE 16 OF THE DELAWARE CODE RELATING TO COUNTY BUILDING CODES.

This Act requires new schools and state buildings over 50,000 square feet to meet certain requirements to ensure that the building's roof is able to support solar energy infrastructure.

## Version chain

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

1. **Bill Text** (committee substitute) — [source](https://legis.delaware.gov/json/BillDetail/GenerateHtmlDocument?legislationId=141402&legislationTypeId=1&docTypeId=2&legislationName=HB402)

## Votes

- SM — **25–15** (pass) · lower
- SM — **21–0** (pass) · upper

## Sponsors

- Edward S. Osienski — primary (person)
- Eric Morrison — primary (person)
- John "Jack" Walsh — primary (person)
- Paul S. Baumbach — primary (person)
- Peter C. Schwartzkopf — primary (person)
- Russell Huxtable — primary (person)
- Sean Matthews — primary (person)
- Stell Parker Selby — primary (person)
- Trey Paradee — primary (person)
- William Bush — primary (person)

## Timeline

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

- **2024-05-16** Introduced and Assigned to Health & Human Development Committee in House `introduction, referral-committee`
- **2024-05-22** Reported Out of Committee (Health & Human Development) in House with 1 Favorable, 11 On Its Merits `committee-passage, committee-passage-favorable`
- **2024-06-13** Passed By House. Votes: 25 YES 15 NO 1 ABSENT `passage`
- **2024-06-13** Assigned to Environment, Energy & Transportation Committee in Senate `introduction, referral-committee`
- **2024-06-18** Reported Out of Committee (Environment, Energy & Transportation) in Senate with 7 On Its Merits `committee-passage`
- **2024-06-26** Passed By Senate. Votes: 21 YES `passage`
- **2024-09-05** 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/c072af57-5702-4e2d-ad05-c1ca4d9f817a`. Confidence: reported (aggregated from official Delaware legislature records).