Buying a House on the Mornington Peninsula? Here’s What to Look Out For

November 10, 2026
TSB Inspections inspector walking a Mornington Peninsula backyard with a tablet

Before you buy on the Mornington Peninsula, check for moisture damage, worn decks, signs of past termite activity, tired bathrooms, poor drainage and the age of the home. Most of these are hard to spot at an open home, and a building and pest inspection is how you find out what’s behind them.

We inspect homes all over the Peninsula, from Mornington down to Rosebud and Tootgarook, and the same few problems keep coming up. This is what we’d keep an eye on.

The short version

  • Moisture, decks, termites, bathrooms and drainage are the ones we see most on the Peninsula.
  • No live termites on the day doesn’t mean no termite problem.
  • An older home needs a closer look, not ruling out.
  • Get the inspection done before you bid at auction, or check the contract conditions for a private sale.

Moisture and water damage hide in ordinary places

Moisture meter testing mould under a sink cabinet
Mould under a sink, checked with a moisture meter.

Water problems turn up under sinks, around bathrooms and near drainage outside. Left alone, ongoing moisture can lead to rot and mould.

On a recent Peninsula inspection we found a leaking waste pipe under a sink, along with other moisture problems. It wouldn’t have jumped out at anyone on a walk-through.

At an open home, look for staining, musty smells, damaged surfaces and any sign of a leak. Plenty of moisture problems aren’t visible at all, though, so a quick look around isn’t a substitute for an inspection.

Decks and outdoor structures wear faster than they look

Soft, deteriorating timber decking boards
Soft, deteriorating timber decking.

Outdoor living is a big part of life down here, and a good deck sells a house. Coastal weather is hard on timber, though, and boards can look fine from a distance while they’re going soft underneath.

On one recent inspection, sections of the decking were soft and deteriorating. Our report recommended a tradesperson repair or replace the affected timber.

Look for damaged boards, loose parts, movement and anywhere that feels spongy underfoot. Please don’t test a dodgy-looking structure yourself. Leave that to us.

No live termites doesn’t mean no termite problem

Previous termite damage in timber wall cladding
Previous termite damage. No live termites were seen.

A timber pest inspection can find evidence of earlier termite activity even when there are no live termites to be seen. Past activity leaves damage behind, and some parts of a house are covered up or can’t be reached.

On a recent job we found old termite damage in the timber. There were no live termites, but the damage still needed attention.

A report saying no live termites were found doesn’t mean the house has never had termites, or that it can’t get them in future.

A renovated bathroom can still have problems

Inspector checking a shower wall for damp with a moisture meter
Checking a shower wall for damp.
Cracked glass shower screen
A cracked shower screen.

New tiles and fresh paint can make a bathroom look brand new without telling you much about what’s behind them. On another Peninsula inspection we found damp in the bottom 300mm of the wall in an ensuite shower. We recorded it as a major defect, most likely from deteriorated grout, and noted that a leaking pipe inside the wall was also possible.

Watch for damaged finishes, a damp smell that won’t go away, mould and signs of old leaks. We can pick up visible problems, but hidden waterproofing and plumbing issues sometimes need a specialist.

Drainage outside the house matters as much as plumbing inside

Hot water service overflow dripping beside the house
A hot water overflow dripping beside the house.

Roof water that isn’t directed away properly, leaking drainage connections and water collecting next to the house can all cause moisture problems. On one of the inspections above we also found disconnected drainage from the building services.

Keep an eye out for water pooling near the house, pipes that are obviously disconnected and ground that slopes towards the building.

Older homes need a closer look, not a ruling out

The Peninsula has everything from old beach shacks to new family homes. Older places have plenty of character. They can also have ageing materials, a few generations of renovations, tired timber and possibly asbestos.

A standard building and pest inspection doesn’t replace a specialist asbestos assessment, so if it’s a concern, ask us about a separate asbestos inspection. None of this is a reason to cross an older home off your list. It just helps to know what care it will need.

A good report explains what the findings mean

TSB inspector reviewing an inspection report on a tablet on site
We write reports on site, with photos, and send them the same day.

Your report should tell you the visible condition of the property, how serious each finding is and what to do next. Ours come the same day, with photos and plain descriptions, and we’re happy to talk you through anything that isn’t clear. If you don’t work in building, the difference between a major defect and a bit of maintenance isn’t always obvious. Our guide to major and minor defects is a good place to start.

Get the inspection done before you commit

A pre-purchase building and pest inspection picks up visible defects, safety concerns and signs of timber pests before you’re locked in. That doesn’t mean every house has serious problems, or that an older home that needs some work isn’t worth buying.

For an auction, get the inspection done before you bid. For a private sale, talk to your conveyancer or solicitor about timing and contract conditions. Our post on when to book covers both.

Questions we often get

What should I check when buying a house on the Mornington Peninsula?

Look for signs of moisture and leaks, soft or damaged decking, mould in bathrooms, water pooling near the house, signs of past termite activity and the age and condition of the building. Then book a building and pest inspection to look at what you can’t see.

Does a building and pest inspection find asbestos?

A standard building and pest inspection doesn’t replace a specialist asbestos assessment. If asbestos is a concern, ask about a separate asbestos inspection.

When should I book an inspection if I’m buying at auction?

Before you bid. There’s no cooling-off period if you win at auction.

Tim from TSB Inspections

Talk to Tim before you buy

Send us the address and your auction or contract dates. We inspect across the Mornington Peninsula and Frankston, and reports come the same day.

Request a quoteor call 0466 916 716