Character · Renovation
Jan 2026
The Queenslander is a working piece of subtropical engineering. Stumped off the ground for ventilation. Deep verandahs to shade the walls before they overheat. Steeply pitched gabled roof to shed the wet-season rain. Light-weight timber walls that cool rapidly at night. The pre-1947 cottage was built when air conditioning didn't exist, and almost everything about its form is a response to that constraint. The trick to renovating one is to add modern living without breaking the thing that makes it work.
The two overlay codes
Most Queenslanders in Brisbane sit inside a character overlay. The Traditional Building Character (Demolition) Overlay Code controls what you can knock down. The Traditional Building Character (Design) Overlay Code controls what you can add. Together they push you toward a specific design language: retain the front (the streetscape-facing cottage), put the new work behind, and make the new work clearly contemporary while not fighting the original.
Done well, this generates the most-recognisable Brisbane renovation type — a restored timber cottage at the street, a modern volume rising behind it, often a deck or pavilion linking the two. Done badly, you get a faux-traditional pastiche or a starkly modern slab tacked to the back of a derelict facade.
The non-negotiables
The character code requires you to:
Keep the front facade. Streetscape-visible elevations stay traditional. No aluminium horizontal sliders where vertical timber double-hung sashes were. No metal cladding where weatherboard was.
Set back additions behind the original. Generally, additions should be behind the front face of the existing cottage so the street still reads as pre-1947 housing.
Keep or restore verandahs. Enclosed verandahs (a common 1970s modification) generally have to be opened back up on the street side.
Match roof language sympathetically. Hip-or-gable roof at a similar pitch where the addition is visible from the street.
The moves that actually work
After ten years working with character cottages, the consistent winners:
Lift, don't knock. Many Queenslanders sit on stumps with 1.8–2.2 m underfloor clearance. Lifting the cottage another 1–1.5 m turns the underfloor into a habitable level — bedrooms, study, rumpus, laundry. The street still reads as cottage; the family doubles its floor area. The structural cost is significant (re-stumping, new floor, services) but typically much less than building a separate addition at the rear, and the floor plan flows better.
Push the kitchen and living to the back. Pre-war cottages are bedroom-front, kitchen-back. Modern living wants the cooking, eating, and family-zone space connected to the garden and the afternoon sun. Resist the temptation to "open up" the front of the cottage; restore the front rooms as bedrooms or studies (where they perform thermally and acoustically), and put the modern living in the new volume at the rear.
Use a glass-and-deck link. A single-storey glazed link between the original cottage and a new two-storey rear pavilion lets the original read independently from the addition, lets light into both, and provides cross-ventilation that a continuous floor plan can't.
Restore, don't replicate. A 1920s VJ-board internal wall has texture and depth that no replica can match. Keep the original where you can, even if it's a bit wonky. Pair it with crisp modern detailing in the new work and the contrast does the heavy lifting.
The thermal problem (and how to fix it)
The honest weakness of the Queenslander is its thermal performance. Single-glazed timber sashes, uninsulated weatherboard walls, no underfloor insulation. A pre-renovation Queenslander typically rates 1–3 stars on NatHERS — comfortable in season but expensive to condition in February heat or July cold snaps.
The retrofit playbook:
Ceiling insulation first. R5.0 batts in the roof space. Single biggest gain available; usually $5,000–$10,000 fully installed.
Wall insulation when the linings come off. R2.0 batts between studs, with a reflective sarking layer to outside-facing walls.
Underfloor batts on the elevated timber floor. R2.0; relatively easy if the underfloor is accessible.
Secondary glazing or thermally-broken double-glazed timber sashes at the windows. The character code constrains the look; secondary glazing internal panels are usually approvable.
Air-sealing at the junctions — gaps under doors, around skirtings, at the chimney throat. Cheap and high-impact.
A thoroughly retrofitted Queenslander can hit 6 stars; a major renovation that incorporates a new rear addition can easily hit 7–8 stars overall once the new volume is properly designed.
What to budget for
Indicative 2026 Brisbane numbers for a 150–200 m² Queenslander renovation:
Restoration + cosmetic refresh (paint, floors, kitchen, bathroom, restump): $250,000–$450,000.
Full renovation with rear addition (raise, additional bedrooms below, new kitchen and family at rear): $700,000–$1.2 million.
"To the studs" renovation with major addition (significant fabric replacement, two-storey rear pavilion, full thermal retrofit): $1.2–$2.0 million.
The character overlay adds 5–15% to typical cost — materials, approval timeline, more skilled trades — but the resale premium on a well-renovated character Queenslander in an inner-Brisbane character suburb has consistently outpaced new-build returns.
The five-year horizon
Three things to watch:
Continued tightening of the character codes to address "renovation by stealth" — councils are increasingly suspicious of incremental external alterations that cumulatively amount to demolition.
Pressure to allow gentle density behind retained character facades — granny flats, dual occupancies, basement bedrooms — which will play to the rear-addition strength of well-designed character renovations.
Mandatory energy disclosure at sale, which will start rewarding owners who retrofitted thoroughly and penalising those who skipped the thermal work.
The character house with character preserved and performance lifted is the Brisbane housing type with the strongest forward economics. The character house "renovated" with the original sash windows replaced by aluminium will be the housing type most exposed to disclosure-era price pressure.
If you've bought a Queenslander and you'd like a conversation about what's possible under the overlay before you commit to a builder, get in touch.
By Ashton Genrich — Building Design — Open, QBCC 15387939