Top 3 Changes to QLD Building Code in 2025

10 July

Queensland’s building code is evolving in 2025 to meet new standards for sustainability, accessibility, and safety. These updates, building on the National Construction Code (NCC) 2022 and Queensland Development Code (QDC) amendments, will impact developers and builders across the state. At JC Engineers, we’re here to help you navigate these changes with practical solutions. Let’s dive into the top three updates you need to know about!

1. Enhanced Energy Efficiency Requirements

Starting in 2025, Queensland is stepping up its energy efficiency game with stricter NCC 2022 standards, following the May 1, 2024, rollout under QDC 4.1. Expect a mandatory 7-star rating for the building shell (roof, walls, windows, floors), with tighter compliance checks. The optional one-star credit for outdoor living areas may be phased out in some cases, pushing the focus to whole-of-home energy use including appliances and renewable energy. This could cut emissions by 1.64 million tonnes statewide, but it might add 1–2% to initial costs (e.g., better insulation, ceiling fans, climate-specific glazing). The upside? Savings of around $185/year per household on electricity bills. Plan early to adjust your designs and avoid delays!

2. Extended Livable Housing Design Standards

The livable housing provisions from QDC 4.5, rolled out on October 1, 2023, are getting a boost in 2025. With the exemption for narrow lots (frontage ≤ 12.5m) and small pre-built homes (≤ 55m²) set to expire on September 30, 2026, interim reviews this year will tighten requirements. All new Class 1a and 2 buildings must now feature step-free entries, wider doorways (≥ 820mm), and accessible toilets on entry levels—unless exempted for steep lots. This supports aging populations and people with disabilities, preventing costly retrofits later. You’ll need to tweak standard plans, but transitional support under Section 37 of the Building Act 1975 can ease the shift. Get ahead by reviewing your designs now!

3. Introduction of Lead in Plumbing Product Restrictions

From September 1, 2025, the NCC 2022 brings new restrictions on lead in plumbing products, aligning with health and sustainability goals. This ban affects water supply systems across all building classes, requiring compliant materials and updated installation practices. Expect a 2–4 week delay for redesign and approval as you source lead-free options. JC Engineers can integrate these changes into your broader plans, ensuring a smooth transition. Stay proactive to meet this deadline and avoid compliance issues!

What This Means for You

These 2025 updates demand early planning to keep your Development Applications (DAs) on track. Energy efficiency upgrades, livable housing adjustments, and lead restrictions could stretch budgets and timelines if overlooked. Councils like Brisbane City Council or Logan City Council won’t hesitate to reject non-compliant submissions, so preparation is key.

How JC Engineers Can Support You

At JC Engineers, our integrated team is ready to help. We offer site assessments, structural designs, and council liaison to ensure your projects align with these new standards. Whether it’s optimizing energy-efficient layouts, adapting for livable housing, or integrating lead-safe plumbing, we deliver practical solutions to keep your build on schedule and within budget.