Common Property Issues Found in Brisbane’s Older Homes

Brisbane’s older homes have a lot going for them. Queenslanders, Federation cottages, solid post-war brick: they have character and space you rarely get in a new build. They also come with a particular set of problems, most of them down to age, our climate, and building standards that have moved on a long way since these places went up.

We inspect a lot of older homes around Brisbane, and the same faults come up again and again. Knowing what they are before you buy, renovate or settle in is what keeps a small issue from turning into a big bill. A proper pre-purchase building inspection, carried out to AS 4349.1, is designed to find exactly this kind of hidden defect. Here are the ones we see most often, why they happen, and what to do about them.

Structural problems

Foundation and slab movement

This is one of the more serious things we look for in older Brisbane homes. A lot of mid-century and earlier houses sit on slab-on-ground or shallow footings, and Brisbane sits on reactive clay soil. Clay swells when it is wet and shrinks when it dries out, and our wet and dry seasons push it through that cycle every year. Over time the footings move, and the house moves with them.

What it looks like:

• Cracking through walls and ceilings, often around window and door frames
• Floors that slope or feel uneven, and doors or windows that start to stick
• Gaps opening up where walls meet ceilings or floors

Left alone, slab movement can undermine the whole structure, and the fixes are not cheap: underpinning and soil stabilisation run into serious money. That is why we flag it early. Picking up movement through a pre-purchase building inspection gives you the chance to plan repairs, or renegotiate, before it becomes your problem.

Timber rot and decay

Timber framing was the norm in older Brisbane homes, especially the Queenslanders. Timber lasts well when it stays dry, but it needs protecting from moisture and pests, and our humid subtropical climate is not kind to it. Rain, poor drainage and slow plumbing leaks all feed rot.

What tends to make it worse:

• Termite activity, which we cover below
• Mould taking hold in humid, closed-up spaces
• Fungal decay in damp, poorly ventilated subfloors and wet areas

Rotten timber shows up as sagging floors, spongy decking and framing that has lost its strength. It is worth checking timber components regularly and dealing with damaged sections before the problem spreads.

Termites

Termites are a genuine threat to older homes in Brisbane. The climate suits them all year round, and a lot of older houses have untreated or poorly protected timber that gives subterranean termites an easy feed. They work through timber and soil out of sight, which is what makes them so damaging.

Signs worth knowing:

• Mud tubes on external walls, piers or through the subfloor
• Timber that sounds hollow or papery when you tap it
• Discarded wings near windows and doors after a swarm

Because the damage is usually hidden inside walls or under floors, a timber pest inspection to AS 4349.3 is the reliable way to know what is going on. Find it early and you can get a treatment plan in place before it eats into the structure and the value of the home.

Damp and rising damp

What rising damp actually is

Rising damp is ground moisture wicking up through porous materials like brick and sandstone. It is common in homes built before damp-proof courses were standard. You see it as tide marks on the wall, paint that will not stay stuck, crumbling plaster, and that musty smell that never quite leaves.

General damp and mould: blocked gutters, leaking roofs and failing plumbing all let water in, and Brisbane’s humidity makes it worse. Damp encourages mould, and mould is a health issue, particularly for anyone with asthma or other respiratory trouble.

Where it leads:

• Damage to plaster, paint and internal finishes
• Timber decay and rot
• Poor indoor air quality

Sorting it usually means fixing the source of the water, repairing or installing a damp-proof course, improving ventilation, and treating the affected areas. We assess damp properly during an inspection, including moisture readings and checking the usual hotspots, and set it all out in a written condition report so you know exactly where you stand.

Old electrical systems

Plenty of older Brisbane homes still run on their original wiring, and it often does not meet current safety standards. Old fuse boards, aluminium wiring and early cabling were never designed for the load a modern household puts through them.

Common issues:

• Lights that flicker and breakers that trip, a sign of overloaded circuits
• Too few power points, so the place runs on extension leads and power boards
• No safety switches (RCDs) to cut the power if something goes wrong

Upgrading to a modern switchboard with circuit breakers and safety switches, and adding enough power points, makes the home safer and easier to live in. This is licensed electrician work, and any inspection that flags it should point you towards getting a licensed electrician in to do it properly.

Asbestos

Asbestos was used all through home building until the late 1980s because it was cheap, fire resistant and a good insulator. In Brisbane you will find it in older roofs, wall cladding, eaves, ceiling sheeting and pipe lagging.

Where it commonly turns up:

• Corrugated fibro sheeting on roofs and walls
• Textured ceiling coatings
• Backing boards and older vinyl floor tiles

Asbestos is generally fine while it is intact and left alone. The risk comes when it is disturbed, drilled, cut or broken, and the fibres get into the air. If you think there is asbestos in the home, do not touch it. Get a licensed assessor to test it and, if it needs to go, a licensed removalist to handle it.

The bottom line

An older Brisbane home can be a great buy, but it asks more of you than a new build. Foundation movement, termites, damp, tired wiring and asbestos are all manageable once you know they are there. The trick is finding out early, through a proper inspection and sensible maintenance, rather than after you have moved in. Deal with the issues on the front foot and you protect your money, your safety and a home worth looking after.

Frequently Asked Questions

Buying an older home around Brisbane and want it checked properly before you commit? Call ZOOM Building & Pest Inspections on 0481 826 856 or book online.

ZOOM Building & Pest Inspections is owned and run by Ben Nejad, trading through B N Total Construction Pty Ltd. QBCC company licence 15279880 and individual licence 1507219, both verifiable on the QBCC public register. Inspections are carried out to the relevant Australian Standard, AS 4349.1 for buildings and AS 4349.3 for timber pests.