Crime Scene Cleaning in Sydney: What You Need to Know

We have provided crime scene and trauma cleaning services across inner Sydney for over seven years, and this is the most emotionally demanding and technically rigorous work our team undertakes. Our crews service properties in Darlinghurst, Kings Cross, and Potts Point where the density of residential and hospitality venues means we respond to incidents ranging from unattended deaths in apartment buildings to violent crimes in commercial premises and drug laboratory contamination in converted terrace houses. We approach every job with compassion for the people affected and absolute precision in our decontamination methods, because the biological and chemical hazards present at these scenes require specialist knowledge that standard cleaning companies do not possess. As professional commercial cleaners sydney with a dedicated biohazard remediation division, we hold the licences, insurance, and training certifications required to restore these spaces to a safe and habitable condition.

Biohazard Classification and Risk Assessment

Biohazard Classification and Risk Assessment covers specific protocols that we tailor to each facility based on its layout, traffic, and compliance requirements. We classify every crime scene or trauma site according to the biological and chemical hazards present before any cleaning work begins. Blood, bodily fluids, tissue, and decomposition by-products are all classified as biohazardous material that must be handled, transported, and disposed of in accordance with workplace health and safety regulations and the relevant environmental protection requirements. Our risk assessment identifies the specific hazards on each site, determines the appropriate personal protective equipment for our crew, and establishes the containment and disposal protocols we will follow. At a Darlinghurst apartment where we attended an unattended death that had gone undetected for several weeks, our assessment identified advanced decomposition fluids that had penetrated the timber floorboards and migrated into the subfloor cavity, which extended the remediation scope far beyond the visible contamination in the room above.

We also assess the structural condition of affected areas, particularly in older buildings across Kings Cross and Potts Point where the original construction may include materials that are damaged by biological contamination. Timber flooring, plasterboard walls, and porous ceiling tiles absorb decomposition fluids and cannot be effectively decontaminated once the material has been saturated. In these cases, we remove and replace the affected building material rather than attempting surface cleaning that would leave embedded contamination behind. Our assessment references the waterproofing principles described in AS 3740 when evaluating how fluids have migrated through the building structure, because understanding the water resistance properties of the construction materials tells us exactly how far the contamination has travelled and where we need to focus our remediation efforts.

Personal Protective Equipment and Crew Safety

Personal Protective Equipment and Crew Safety involves specific protocols that we tailor to each facility based on its layout, traffic, and compliance requirements. We require every crime scene cleaning technician to wear full Level C PPE including a Tyvek hooded coverall, chemical-resistant boot covers, double nitrile gloves, a full-face P3 respirator with combination organic vapour and particulate cartridges, and a disposable face shield over the respirator. This level of protection exceeds the minimum requirements for biohazard handling but reflects our commitment to eliminating any risk of exposure for our staff. We have seen the consequences of inadequate PPE at other operators sites where technicians have contracted infections from bloodborne pathogens because they wore insufficient respiratory protection or failed to double-glove when handling sharps. Our PPE protocol has been reviewed by an occupational hygienist and is documented in our site-specific safety management plan for every job.

We also maintain strict decontamination procedures for our crews when they leave a site. Every technician passes through a three-stage decontamination corridor that we set up at the site entrance: the first stage is a gross decontamination spray of the outer PPE layer, the second is removal and bagging of all disposable PPE into clinical waste bags, and the third is a personal hygiene wash including hands, face, and any exposed skin. Our PPE waste is double-bagged in yellow clinical waste bags and transported to a licensed clinical waste facility for incineration. We treat the safety of our own people with the same seriousness we bring to the decontamination of the site itself, because a technician who becomes contaminated during cleaning becomes a vector for pathogen transmission to their family and community.

Office Area Cleaning Frequency Guide

Blood and Biological Fluid Decontamination Process

Office Area Cleaning Frequency Guide requires specific protocols that we tailor to each facility based on its layout, traffic, and compliance requirements. We follow a systematic decontamination process that begins with the removal of gross biological material using disposable scoops, absorbent pads, and enzymatic pre-treatment solutions that break down proteins and make the material easier to contain without spreading. Once the bulk material is removed and bagged for clinical waste disposal, we apply a hospital-grade disinfectant to all affected surfaces at a concentration that achieves a six-log kill of bloodborne pathogens including HIV, Hepatitis B, and Hepatitis C. Our disinfectant of choice is a peracetic acid formulation that provides broad-spectrum efficacy against bacteria, viruses, fungi, and bacterial spores without leaving toxic residues on surfaces after the contact time has elapsed. We apply it by both manual spray and low-pressure fogging depending on the surface type and accessibility.

We perform multiple decontamination cycles on porous surfaces that have absorbed biological material, testing between each cycle with an ATP bioluminescence swab to verify that the biological load is decreasing. Our target is fewer than 50 relative light units on surfaces that will remain in place, which is stricter than the healthcare benchmark because of the nature of the contamination we are treating. At a Kings Cross boarding house where a violent incident had resulted in blood contamination across three rooms including carpet, plasterboard walls, and a timber staircase, our ATP testing after the first decontamination cycle showed readings above 500 RLU on the staircase treads. We performed three additional cycles before the readings dropped below our threshold, and we then applied an encapsulating sealant to the timber as an additional barrier before the new carpet was laid. That thoroughness is what gives our clients confidence that the space is genuinely safe to reoccupy.

Odour Neutralisation and Air Quality Restoration

Odour Neutralisation and Air Quality Restoration addresses specific protocols that we tailor to each facility based on its layout, traffic, and compliance requirements. We treat the persistent odour associated with decomposition, blood, and other biological material as a distinct workstream within our crime scene cleaning process because the volatile organic compounds responsible for these odours embed in porous materials and continue to off-gas long after the visible contamination has been removed. Our primary odour treatment uses hydroxyl generators that produce hydroxyl radicals capable of oxidising odour-causing molecules at the molecular level without the material degradation risks associated with ozone generators. We position multiple units throughout the affected area and run them continuously for the duration of the remediation project, typically three to five days for a standard residential scene.

For severe decomposition odour in Potts Point and Darlinghurst apartments where the building construction includes timber framing and plasterboard that have absorbed volatile compounds over an extended period, we supplement hydroxyl treatment with thermal fogging using a petroleum-based deodoriser that penetrates porous materials along the same pathways the odour compounds originally followed. We have also used ozone shock treatment as a last resort in sealed, unoccupied spaces where other methods have not achieved complete odour elimination, but we only deploy ozone after removing all organic materials from the room and with the understanding that the space must be ventilated for at least twenty-four hours before reoccupation. Our experience across dozens of decomposition scenes has taught us that odour elimination requires patience and layered treatment rather than a single application of any one technology.

Crime Scene Cleaning Costs in Sydney

We price crime scene and trauma cleaning based on the type of incident, the affected floor area, the contamination severity, and the extent of material removal and replacement required. A standard single-room biohazard remediation in the Darlinghurst or Potts Point area costs approximately $7,200 for detailed decontamination including blood and fluid removal, multi-cycle disinfection with ATP verification, odour treatment, clinical waste disposal, and a completion certificate. Unattended death scenes with advanced decomposition typically cost more because the contamination migrates through building materials and the odour treatment runs for longer. Drug laboratory decontamination is quoted separately because the chemical hazards require different PPE, cleaning agents, and disposal methods. We provide a detailed scope and fixed-price estimate within hours of our initial site attendance.

We understand that crime scene cleaning often occurs under difficult emotional circumstances, and we work with insurance companies, real estate agents, strata managers, and families to manage the administrative burden alongside the physical remediation. Our documentation is formatted for insurance claim submission and includes photographic records, ATP verification results, clinical waste manifests, and a signed clearance certificate that confirms the space meets the standard for safe reoccupation. We also offer a confidential service for property owners who prefer that the nature of the cleaning work is not disclosed to neighbours or tenants in adjacent properties. Discretion is something we practise on every job, but we make it explicit for clients who are particularly concerned about privacy. For properties that need cleaning after events rather than incidents, our post-event cleaning service covers the less hazardous end of our specialist cleaning portfolio.

Frequently Asked Questions

How quickly can you respond to a crime scene cleaning request?

We respond within four hours of receiving a confirmed booking for any crime scene or trauma cleaning job in the Sydney metropolitan area. Our emergency response vehicles are pre-loaded with all necessary PPE, decontamination equipment, and clinical waste packaging so we can commence work immediately upon arrival. We operate a confidential 24-hour phone line for these enquiries.

Do I need police clearance before you can start cleaning?

Yes. We cannot enter or clean any scene that is still under active police investigation. Once the investigating officers have released the scene and provided written or verbal clearance to the property owner or manager, we can commence work. We recommend contacting us as soon as you know the scene will be released so we can schedule our crew and minimise the time between police clearance and the start of remediation.

Is crime scene cleaning covered by insurance?

In many cases, yes. Landlord insurance, strata insurance, and some home and contents policies include cover for biohazard remediation following a trauma event. We provide all documentation required for insurance claim submission and can liaise directly with your insurer or loss adjuster if you authorise us to do so. We recommend checking your policy or contacting your insurer as soon as possible after the incident.

What happens to the contaminated materials you remove?

All biohazardous waste including contaminated building materials, PPE, cleaning consumables, and biological matter is double-bagged in clinical waste packaging, transported in a licensed vehicle, and disposed of through incineration at a licensed clinical waste facility. We provide waste tracking documentation that confirms the chain of custody from our site to the disposal facility, which satisfies regulatory requirements and provides a permanent record for the property owner.

Can the property be lived in during crime scene cleaning?

We generally require the affected area and any immediately adjacent rooms to be vacated during the remediation process due to the biological hazards, chemical treatments, and odour control equipment in use. In larger properties or multi-unit buildings, unaffected areas that can be physically isolated from the work zone may remain occupied at the discretion of the property owner. We assess each situation individually and provide clear guidance on safe occupancy during our initial consultation.

About Clean Group

Clean Group is a Sydney-based commercial cleaning company with over 25 years of industry experience. Founded by Suji Siv, our team of 50+ trained professionals services offices, warehouses, medical centres, schools, childcare facilities, retail stores, gyms, and strata properties across Sydney, Melbourne, and Brisbane.

We are active members of ISSA and the Building Service Contractors Association of Australia (BSCAA). Our operations align with ISO 9001 (Quality Management), ISO 14001 (Environmental Management), and ISO 45001 (Workplace Health and Safety) standards. We hold membership with the Green Building Council of Australia and use eco-friendly, TGA-registered cleaning products wherever possible.

Every Clean Group cleaner is police-checked, fully insured, and trained in safe work procedures under SafeWork NSW guidelines. We operate 7 days a week, including after-hours and weekend services, to minimise disruption to your business.