This may be more complicated that it at first appears. The issue is did the contractor really "abandon" the tools, meaning he has no intent to return to collect the tools and more importantly can you prove the intent to abandon. If the tools are abandoned there is no time required to wait before you remove them, but it the tools are not abandoned then there is no time at which it becomes safe to dispose of the tools. I recommend that you get an attorney involve to assist you before you remove the tools and potentially create liability for yourself. We can help you. Just call 303-688-0944 or schedule a free case assessment at robandhen.wpengine.com/locations. At your appointment we'll review the facts, your rights, your risks, your options, your desired results, your concerns, the law, the process, timeline, how we can help, costs, etc.