If these walls could talk, they might tell you they were lined with daggy wallpaper just a few months ago.
A new online tool has compiled interior photos of 13 million Australian addresses so you can see how they've been renovated or changed.
The free Domain Home Price Guide also has sale and rental history, price estimates and images from Google street view.
Domain Home and Lifestyle Editor Effie Mann said Australian renovators could use the tool to learn from each other.
"While it might be tempting to add a fireplace to your home in winter, it’s also important to understand which additions will prove to be good investments," Mann said.
"Kitchens, bathrooms, additional bedrooms and landscaped gardens tend to add the most value to a home, over luxuries like wine cellars, home theatres or swimming pools.”
Check out some of the before-and-after photos currently on the tool.