Expanding into contents cleaning is a very good profit center to add to any restoration business. It has one of the highest profit margins in the industry if you have a good systemized process and well trained staff. This type of cleaning is also not equipment intensive, so the startup costs can be quite minimal which can be a huge plus to adding this service to your company.
If you keep your pencil sharp you can see profit margins in the 65-70% range. And if you offer HAZMAT cleaning to your services, the profit margins are even higher. The key is to focus on efficiency in your process.