Shadow Diagrams
By George Giannakakis · B.Arch.Studies · M.Arch (UniSA) · RLA300580
Last reviewed: · How we research
Shadow Diagrams explained in detail
Diagrams used to measure and analyse the solar exposure of a building or structure. They show how sunlight will interact with a building over a day, season, or year, and importantly, how your building will cast shadows on neighbouring properties. Often required for Development Applications, particularly for multi-storey buildings or those near boundaries.
In this episode, we down the concept of overshadowing - how it affects your home design, when it applies, and how builders identify it. They share practical tips to spot potential issues early, especially on titled land, and explain the key rules and design solutions to help you stay compliant and avoid costly setbacks.
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Frequently Asked Questions
Common questions about shadow diagrams
Diagrams used to measure and analyse the solar exposure of a building or structure. Understanding the terminology upfront helps you compare builder quotes and read your Australian building contract with confidence.
Verify against the binding rules in your state
BuildPilot is an independent Australian building platform, we publish guidance, we don't hold a building licence. Every Australian residential build must comply with the National Construction Code plus state-specific Acts and consumer-protection law. The authorities below are the primary sources of truth for the rules that actually apply to your project.
National
The primary national set of technical building standards that every Australian build must comply with. Volume 2 covers Class 1 & 10 buildings (most homes).
Specific material, product and method standards (e.g. AS 3700 masonry, AS 1684 timber framing) referenced by the NCC.
National peak body for residential builders. Publishes the most widely used home-building contracts and consumer guidance.
National peak body for general builders. Publishes commercial and residential contracts and industry guidance.
By state & territory
Links above open the public website of each authority. BuildPilot is not affiliated with these bodies and does not act on their behalf. Information on this page is general - check the current edition of the NCC and the relevant state Act for binding requirements.
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