Planning · Character
Aug 2025
Brisbane's character streets — the timber-and-tin runs through Paddington, Auchenflower, Red Hill, Annerley, Norman Park, parts of Highgate Hill and Spring Hill — are the city's most-loved residential fabric and its most regulated. If you've bought a pre-1947 house in one of them, you've inherited a planning overlay that controls what you can demolish, what you can add, and what materials your alterations have to be made of. Most owners discover this six weeks into a renovation concept. Better to know up-front.
The pre-1947 trigger
The City Plan defines a "character" dwelling as one constructed on or before 31 December 1946. The date is a proxy for traditional construction (timber framing, weatherboard or chamferboard cladding, corrugated steel roofing, deep verandahs, ornate gables) which dominated Brisbane housing through the first half of the twentieth century. If your house meets the date and the street meets the overlay map, two codes apply:
The Traditional Building Character (Demolition) Overlay Code — governs whether you can knock the house down.
The Traditional Building Character (Design) Overlay Code — governs what alterations and additions look like.
Demolition — the AO5 / PO5 test
The acceptable outcome (AO5) of the demolition code permits demolition only where the building does not contribute to the visual traditional character of the street — for example, if it's been so heavily modified (aluminium windows, removed verandahs, contemporary cladding) that what's left is no longer "traditional." If the building still expresses character, you're stuck with the performance outcome (PO5) test, which goes to council assessment, often to the Planning and Environment Court if council refuses.
Case law over the past decade — see Colin Biggers & Paisley's analysis of recent decisions — has been mixed. Houses with weak or compromised character have been approved for demolition; houses on intact character streets have been refused. The test is partly objective (modifications, materials) and partly contextual (how the building reads in its street). Don't budget a knockdown without a planning advice answer first.
Additions and alterations — what the design code controls
If you're keeping the house and adding to it, the design overlay code dictates:
Setbacks of the addition — generally behind the front face of the original building, so the streetscape reads as original.
Roof form and pitch — typically required to be sympathetic to the original (gable or hip, similar pitch, similar overhang).
Materials on street-visible elevations — weatherboard or chamferboard cladding (or "appearance of"), corrugated steel roofing, traditional window proportions, no horizontal sliding aluminium where vertical timber would have been.
Verandah retention — original verandahs to the street facade must generally be retained; enclosed verandahs that have been infilled need to be returned to open form when the building is altered.
This sounds restrictive. In practice it shapes the design language — you build modern volumes behind the original cottage rather than over the top of it — and the result is often architecturally stronger than the alternative. The character constraints are part of why a renovated Queenslander in Paddington trades at a 25–40% premium per square metre over an equivalent new-build in a non-character suburb.
Where renovations fall over
Three common ways to lose:
Hidden compliance scope. You think you're doing a kitchen and a back deck; the overlay says any external alteration triggers code-assessable DA. The fee, the timeline, and the documentation all change.
Demolition-by-stealth. Removing more than half the external fabric, even progressively, can be assessed as a demolition by the City Plan — even if you intended to keep some of the original walls. Council certifiers are wise to this and will refer suspicious applications back through the demolition overlay.
Removal of original windows. Replacing timber double-hung windows with contemporary aluminium for "energy reasons" is consistently refused. The compliant move is restoration plus secondary glazing or thermally-broken timber sashes — costlier, but allowed.
The five-year horizon
Character overlay coverage is unlikely to shrink and may expand. Brisbane City Council has flagged stronger heritage and character protections in successive amendments to the City Plan. At the same time, the political pressure to allow gentle density in character suburbs (small lots, dual occupancy, secondary dwellings) is rising. The likely synthesis: more density allowed behind retained character facades. Designers who know how to deliver that — modern living volumes hidden from the street, sympathetic streetfacing scale, character materials done credibly — will dominate the next decade of Brisbane renovation work.
If your block is in a character street, design for the long game. Restore the front; pour the design energy into the rear; let the streetscape do the heavy lifting on resale.
If you'd like us to assess your character street's specifics before you commit to a knockdown or a major renovation, get in touch.
By Ashton Genrich — Building Design — Open, QBCC 15387939