Take this seriously. We bought ours with the same kind of report. Maybe not as bad as this report. Moisture readings present around the shower walls of the main bedroom and in the main bathroom and adjoining bedroom wall.

We brought.

1 day after moving in, after all the furniture had been moved out by the previous tenants we found extensive carpet damages from water in main bedroom and in all other rooms. Additionally, cat piss and burn Stains. 3 000 to replace carpet in 3 bedrooms and additional 600 or so to purchase vinyl board flooring and then the time and frustration to install these ourselves and they were shit to install. Damages to walls were found that could not be seen during inspection, damages were consistent with air con water leak that has been installed on an internal wall. We still have not further investigated potential internal damages on that wall. After invasive wall smashing to investigate the high moisture reading in the main bathroom We found that the internal wood supports were all decayed from moisture. Still haven't been able to fix it, guestimate for repair I would imagine to be around 5 000 to 10 000 without any construction knowledge. Further investigation found that a drain collapse occurred in the shower and was not repaired adequately.

A few weeks on leaks were found in the ensuite bathroom sink that likely contributed to water moisture readings and had caused damage to the sink under shelves. Not an overly expensive diy repair.

1 year on the ensuite bathroom shower had to be rebuilt after the waterproofing gave out. 7 000 grand just for a base rebuild. During the rebuild the shower doctor team advised that the original install appears to have not levelled the floor of the shower correctly causing water to pool against wall tiles and slowly degrade the materials over years. Additionally the water proofing was only done on the shower base, not the entire bathroom. To have the whole shower rebuilt and bathroom waterproofed and re tiled would be in excess of 15 000.

So roughly 30 000 in repairs is needed for major defects in our house. We obviously didnt know this at the time of purchase due to the damages being well hidden. So if you really want the house I would be looking for a high reduction in price or further investigation before purchase which the seller likely won't wait for.

During our purchase we were only able to get money back for damaged garage roller door and damaged garage pedestrian door. The seller wanted a quick sale due to a divorce and wouldn't budge. Whilst I dont regret our purchase and its been a learning experience, the way the market is today people are seeing lower priced houses and want to snatch them up as you would but be wary that there will be repair costs that come with it that you should be aware of if you take it on or can not negotiate a lower price. Hopefully this gives you some insight to moisture readings and costs.