Discovering that someone you know has passed away alone — sometimes days or weeks before anyone noticed — is one of the most disorienting experiences a person can go through. In the shock of the moment, knowing what to do next can feel impossible. This guide walks you through every step clearly and practically, from the moment of discovery through to cleanup and beyond.
What Exactly Is an Unattended Death?
An unattended death is any death that occurs without witnesses and where the body is not discovered immediately. These situations can lead to decomposition, creating biohazards like pathogens and odours that demand professional unattended death cleanup.
In 2022, the United States experienced approximately 128,800 unattended home deaths — a figure that reflects just how common this situation is, particularly among elderly individuals living alone. The causes range from natural illness to accidents, and in some cases, suicide.
Regardless of the cause, the practical steps that follow are largely the same.
Step 1 — Do Not Enter the Scene
This is the most important instruction in this entire guide.
An unattended death scene is a biohazard. Decomposition begins rapidly, and the resulting biological materials — blood, bodily fluids, tissue, and odour-causing compounds — can harbour pathogens such as bacteria, viruses, and other contaminants. Disturbing the scene can also compromise a potential investigation or spread contaminants further.
Your instinct may be to go to your loved one or to start cleaning. Resist both. Leave the scene exactly as you found it.
Step 2 — Call 911 Immediately
The first thing you should do is call 911. Police will arrive at the scene to investigate and determine the cause of death. Even if the deceased died of natural causes, this is a critical step. The police will help you contact the local coroner’s office, who will transport the body to the morgue.
When you call, stay calm and provide:
- Your location and the address of the property
- What you observed — odours, signs of decomposition, how you discovered the situation
- Your relationship to the deceased if known
Do not attempt to move or touch anything before authorities arrive.
Step 3 — Wait for Scene Release
Law enforcement and the medical examiner will conduct their investigation before releasing the property. This process can take anywhere from a few hours to a day or more, depending on whether foul play is suspected.
The unattended death cleanup cannot begin until the authorities have completed their investigation and officially released the scene.
During this waiting period, keep others — including children and pets — away from the property entirely.
Step 4 — Notify Family and Close Friends
Since the death was unattended, friends and family won’t know the deceased has passed. Reach out to notify family members and other individuals in the social circle of the person’s passing.
This is emotionally difficult. If possible, have someone with you when you make these calls. Share the news as gently as you can, and expect a range of reactions.
Step 5 — Contact Your Insurance Provider
Before calling a cleanup company, call your homeowners’ or landlord insurance provider and report the incident. Many policies cover biohazard remediation, and understanding your coverage upfront can significantly reduce what you pay out of pocket.
When you call, ask specifically:
- Does my policy cover unattended death cleanup?
- What documentation do I need for the claim?
- Do I need pre-approval before work begins?
Get a claim number before any unattended death cleanup starts. This protects your ability to be reimbursed.
Step 6 — Contact a Certified Biohazard Cleanup Specialist
Once the authorities have released the scene, it is time to contact a professional biohazard remediation company.
This is not a job for a general cleaning service. Household cleaning products are simply not strong enough to properly disinfect an area affected by body fluids or decomposition. Porous materials, including wood flooring, carpet, drywall, and subfloor absorb biological material that cannot be removed by surface cleaning alone.
When choosing a company, verify that they are:
- IICRC certified in biohazard remediation or trauma scene cleanup
- Licensed in your state
- Carrying a current Certificate of Insurance
- Available 24/7 with demonstrated experience in decomposition cleanup
As little as 4 minutes is the time it takes for the decomposition of a body to begin. Bodily fluids can rapidly seep into carpets, between flooring, and through bedding, causing persistent odour and creating a space that is unlivable. Acting quickly after scene release limits how deeply contamination penetrates structural materials — and directly affects the cost and complexity of the cleanup.
What the Cleanup Process Actually Involves
A certified unattended death cleanup typically involves:
- Full scene assessment to determine the scope of contamination
- Containment to prevent cross-contamination to unaffected areas
- Removal of all biological material and contaminated porous materials
- Hospital-grade disinfection of all affected surfaces
- Odour elimination using industrial ozone and hydroxyl treatment
- Final inspection and documentation for insurance purposes
Most cleanups take one to three days, depending on the scene’s condition and size.
What About the Property Afterward?
Once the property has been professionally remediated and cleared, it is safe to re-enter. The contractor will provide a written clearance report that documents what was done and confirms the property meets safety standards.
If you are a landlord, this documentation is essential — both for your records and for future tenants. Failure to address the scene properly could result in legal liability from future tenants or home buyers due to unsafe conditions.
Take Care of Yourself Too
The practical steps above are necessary, but don’t overlook what this experience does to you emotionally. Discovering an unattended death — particularly of someone you loved — can cause lasting trauma.
Do not underestimate the psychological toll or try to power through. Contact a counsellor or psychologist to help you navigate the experience, which can take months or years to fully process.
Resources like the National Alliance on Mental Illness (NAMI) and GriefShare offer support for people dealing with sudden or traumatic loss.
Need Help Right Now?
If you’ve just been through this and need a verified specialist in your area, submit a request here, and we’ll match you with an IICRC-certified contractor within minutes — available 24/7, all 50 states.