The guide
Step
12
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Pre-design

Site and planning investigation

Establishing what your site will allow before anyone designs anything: character, flood, demolition control, height, setbacks.

Someone has told you your house is pre-1947 and you've been trying to work out what that means ever since. The character overlay Brisbane applies across much of the inner city sounds like a prohibition, and what you can do under it is almost always more than you expect.

The overlay is a mapped thing — your address is either in it or it isn't. A great deal of inner Brisbane is: Paddington, Red Hill, Camp Hill, Norman Park, Wooloowin, Coorparoo. It's a set of rules about where and how, and most of what you want to do sits on the permitted side of them.

Two questions decide most projects: whether you can change what faces the street, and how much height you have to work with. The rest — setbacks, site cover, flood — I work through for you at the start.

You'll know what your site will take before anyone spends your money drawing on it.

Why the planning check comes before the design

The practical case

A clear written picture of what your site allows before anyone draws on it: overlays, demolition control, height, boundary setbacks, site cover and flood. Knowing it up front shapes the scheme correctly the first time.

What it does for you

You get to stop guessing. Rather than hoping a design will be allowed, you'll know what your site will take before anyone spends your money drawing on it.

Designing first and asking later, and asking first

Without an architect

On your own, a design often meets the City Plan for the first time at lodgement. For simple work that's usually fine. On a character block it can mean redrawing, or a longer conversation with council.

With an architect

Most of what I do is Brisbane houses — Queenslanders, workers' cottages, post-war brick, and the well-meaning additions people have made to all of them over the years. Character overlay and demolition control shape a design more than anyone expects, and they're far better understood at the start than discovered halfway through. It isn't a prohibition on doing anything. It's a set of rules about where and how, and I know which arguments this council will entertain.

What people ask about character overlays in Brisbane

How high can I raise my house in Brisbane?

It's arithmetic rather than a rule. In most low density residential areas the City Plan allows a building height of 9.5 metres and two storeys, measured from ground level. A habitable room needs a 2.4 metre ceiling, so the new lower level needs that plus its floor structure, then the existing house above it, then its roof. A steep gable eats a lot of that, which is why some Queenslanders raise comfortably and others don't.

Why do two similar houses in the same street get different answers on raising?

Slope, roof pitch and ground level. Height is measured from the ground below the building, so on a block that falls away the downhill side reaches the limit first and governs the design. A shallow-pitched roof leaves far more room than a steep one. The envelope decides whether raising is possible. The character code decides what it looks like.

Can I demolish a Queenslander in Brisbane?

Not without approval, where demolition control applies and the house dates from 1946 or earlier. Full demolition is assessed by council, and the test turns broadly on whether the house still shows traditional character and contributes to the street. Wanting a different house isn't a ground. Partial demolition is far more permissive — taking the rear off for an addition is routine, because what's protected is what the street sees.

How do I find out if my house is in a flood zone in Brisbane?

Brisbane City Council publishes a free FloodWise Property Report for every address. Flood affectation isn't a reason not to build — a great deal of good Brisbane housing sits on flood-affected land — but it changes minimum floor levels, what the space under a raised house can be used for, and your insurance.

How close to the boundary can I build in Brisbane?

There's no single number, and any number you find online is probably for someone else's site. Two sets of rules apply — the City Plan's dwelling house provisions and the Queensland Development Code's siting standards — and both change with wall height, lot size and zone. In character streets the front setback follows what your neighbours do.

How to find out what your site will allow

  • Find out roughly when your house was built — old photographs, the sale contract.
  • Note which parts of the street frontage you'd hate to lose.
  • Look at what's been built recently in your street, and tell me what you like.
  • Bring your questions about raising, extending or demolishing. I'll check the mapping.
Still at the start?

If you would rather start small, the First Sketch Session is two hours at your place. You keep the sketches, and there is no obligation afterwards.