Free visual inspection and a written scope of work before any mitigation begins - photos, moisture readings, and drying logs go in your claim file
The scope we write is the scope we bill. Anything new gets shown to you, in writing, before we touch it.
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AfterTrusted Biohazard & Crime Scene Cleanup for Seattle Homeowners
Our Biohazard & Crime Scene Cleanup cost guide shows Seattle jobs typically run $1,500-$6,000 depending on contamination scope, with most trauma and unattended death scenes falling in the $2,500-$4,500 range. DryMark Restoration Seattle dispatches background-checked, IICRC-certified technicians within 60-90 minutes for active biohazard situations, and every job begins with a written price before any work starts - Haven Standard, Clause 1. Call (425) 671-5392 for immediate dispatch or to schedule a free, no-obligation assessment.
We’ve restored over 12,000 homes since 2011, and our founder built this company around the documentation gap that costs homeowners their insurance claims. In Seattle’s dense neighborhoods - from Capitol Hill’s century-old multifamily buildings to the newer construction in Ballard and South Lake Union - biohazard incidents present unique challenges: tight access corridors, shared ventilation systems, and the persistent moisture that complicates decomposition cleanup during our wet winters. Our crews carry the moisture meters, ATP testing equipment, and photo documentation systems that turn a biohazard restoration invoice into a claim file an adjuster can process without dispute. Every visit produces a documented photo record, every scope is written and signed before work begins, and every job carries our 365-Day Done Right Promise under The Haven Standard.
What Our Biohazard & Crime Scene Cleanup Service Includes
Crime Scene Cleanup
Crime scene cleanup addresses blood, tissue, and forensic residue left after law enforcement releases a property to the owner. For our Biohazard & Crime Scene Cleanup in Seattle, we regularly work with property managers in the University District and Central District where rental units require rapid turnover between police clearance and reoccupancy. Our technicians remove all biological material, apply enzymatic cleaners to break down protein-based contaminants, and perform ATP testing to verify surface sanitation before we sign off on the job.
Trauma & Unattended Death Cleanup
Unattended death presents the most technically demanding biohazard scenario, particularly in Seattle’s climate where cool, humid conditions slow natural desiccation and extend decomposition timelines. We’ve handled dozens of these cases in older homes in West Seattle and Beacon Hill where subfloor penetration and wall cavity contamination required controlled demolition and tertiary drying - the final phase of moisture removal where vapor pressure differential drives hidden moisture out of structural materials. Our crews document every square foot of affected area with photos and moisture readings, then produce a written scope that separates structural restoration from biohazard remediation for cleaner insurance processing.
Hoarding Cleanup
Hoarding environments often conceal biohazards beneath years of accumulation: animal waste, decomposing food, and in severe cases, human waste or unattended death. We also provide our Biohazard & Crime Scene Cleanup in Bellevue and approach these jobs in Seattle’s established neighborhoods - Queen Anne, Magnolia, the older pockets of Northgate - with a protocol that prioritizes worker safety and resident dignity. Our team establishes containment, documents contents condition with photo inventory, and removes biohazardous material under IICRC guidelines while preserving items the homeowner wishes to keep, with each decision logged in writing.
Blood & Bodily Fluid Cleanup
Blood and bodily fluid incidents range from workplace accidents in Seattle’s industrial zones along the Duwamish Waterway to household injuries in residential areas throughout the metro. These fluids carry bloodborne pathogens including hepatitis B and C, HIV, and other infectious agents that require specific PPE and disposal protocols. We treat all blood incidents as Category 3 water damage under IICRC standards, meaning full personal protection, sealed disposal containers, and documented decontamination of all affected surfaces including hidden splash zones behind fixtures and under flooring.
Infectious Disease Disinfection
Infectious disease disinfection targets viral and bacterial contamination in residential, commercial, and healthcare-adjacent settings across Seattle. During outbreak situations, we deploy hospital-grade disinfectants with EPA-registered kill claims against the specific pathogen, applied with electrostatic sprayers that wrap complex surfaces in treated mist. Our documentation includes the disinfectant’s EPA registration number, contact time achieved, and post-treatment ATP readings - the same evidence standard we apply to water damage restoration and mold remediation jobs.
Tear Gas & Chemical Cleanup
Tear gas residue (CS gas, OC pepper spray, and related riot control agents) bonds aggressively with porous materials and requires specialized neutralization, particularly in Seattle’s older buildings with original plaster, hardwood, and unsealed masonry. We’ve remediated tear gas contamination in commercial properties near downtown, Capitol Hill, and through our Kirkland Biohazard & Crime Scene Cleanup where standard cleaning left residents reporting respiratory irritation weeks later. Our process identifies the specific agent deployed, tests surface pH, and applies the appropriate neutralizing compound before full HEPA extraction and air scrubbing with Phoenix and XPOWER equipment.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Brands We Service for Biohazard & Crime Scene Cleanup
Our equipment fleet includes professional-grade systems from Dri-Eaz, Phoenix, XPOWER, B-Air, and Injectidry - brands we’ve deployed on thousands of jobs since 2011. The Injectidry panel drying system, for instance, allows us to dry wall cavities and subfloor spaces without full demolition when contamination hasn’t penetrated deeply, preserving original plaster in Seattle’s pre-war housing stock and reducing both restoration cost and timeline. We document every equipment placement with photos and psychrometric readings - the temperature, relative humidity, and vapor pressure data that prove drying progress to adjusters.
Whether your property requires HEPA air scrubbing with Phoenix Guardian units, controlled demolition with Injectidry cavity drying, or full structural drying with Dri-Eaz and XPOWER dehumidifiers, we match the equipment to the contamination profile and document every decision. If you’re comparing estimates, our Free Second Opinion on any competitor’s written quote lets you verify whether their scope addresses the full contamination picture or misses hidden damage that will surface later.
BeforeAfterSigns You Need Biohazard & Crime Scene Cleanup Right Now
- Visible blood or bodily fluid on porous surfaces. Blood soaks into drywall, carpet padding, and subflooring within minutes, and surface cleaning leaves active pathogens in the material matrix. In Seattle’s humid climate, these contaminants also create secondary mold risk within 24-48 hours.
- Unexplained odors that worsen with temperature or humidity. Decomposition produces putrescine, cadaverine, and sulfur compounds that penetrate structural materials and reactivate when conditions are right. If you smell something that cleaning doesn’t resolve, the source is likely in a wall cavity, subfloor, or HVAC system.
- Law enforcement or coroner has released the scene. Police departments do not clean biohazard scenes - that responsibility falls to the property owner. Delaying professional cleanup extends contamination spread and complicates insurance documentation.
- Evidence of animal infestation with waste accumulation. Rodent and bird waste carry hantavirus, histoplasmosis, and other pathogens that become airborne during disturbance. Hoarding and neglected properties in Seattle’s older neighborhoods frequently require this specialized remediation.
- Tear gas or chemical agent deployment on or near your property. CS gas crystals embed in textiles and porous surfaces, reactivating with moisture and causing persistent respiratory and dermal irritation. Standard cleaning methods spread rather than remove these compounds.
Our Biohazard & Crime Scene Cleanup Process - Step by Step
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Immediate assessment and written scope. Our technician arrives in marked vehicle, verifies identity and license, and conducts a room-by-room inspection with photo documentation. We identify all affected materials, test moisture content and contamination spread, and deliver a written price before any work begins - Haven Standard, Clause 1. No exceptions.
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Containment and engineering controls. We establish negative air pressure containment using HEPA-filtered air scrubbers, seal HVAC returns in affected zones, and post the work area to prevent cross-contamination. In Seattle’s multifamily buildings, this step protects adjacent units and common areas.
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Removal of contaminated materials. All biohazardous material is removed, bagged in labeled biohazard containers, and transported by licensed medical waste hauler to approved disposal facilities. We document each removal with before-and-after photos and precise square footage measurements.
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Cleaning, disinfection, and verification testing. Surfaces receive enzymatic treatment followed by EPA-registered disinfectant applied at specified contact times. We verify effectiveness with ATP bioluminescence testing - a measurable light-reaction test that confirms surface sanitation to documented thresholds, not visual inspection alone.
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Drying, reconstruction assessment, and final documentation. Where demolition has exposed structural materials, we deploy Dri-Eaz and Phoenix drying equipment to achieve IICRC-specified moisture content levels before reconstruction. You receive a complete photo record, drying log, disposal manifests, and our signed 365-Day Done Right Promise under The Haven Standard.
How Much Does Biohazard & Crime Scene Cleanup Cost in Seattle?
A typical unattended death cleanup in Seattle runs $2,500-$4,500 for a single room with subfloor involvement, while crime scene remediation with extensive forensic chemical residue can reach $5,000-$8,000. Hoarding cleanup ranges widely - $1,500 for contained biohazard removal to $10,000+ for whole-property remediation with structural repairs. Blood and bodily fluid incidents in contained areas generally fall between $1,500 and $3,500.
| Service Type | Typical Range in Seattle | Primary Cost Drivers |
|---|---|---|
| Blood/bodily fluid cleanup (contained area) | $1,500 - $3,500 | Square footage, surface porosity, HVAC involvement |
| Unattended death / trauma cleanup | $2,500 - $4,500 | Decomposition timeline, subfloor penetration, wall cavity spread |
| Crime scene with forensic residue | $3,500 - $8,000 | Chemical type, porous material exposure, testing requirements |
| Hoarding cleanup with biohazards | $2,500 - $10,000+ | Volume of material, hidden contamination, structural damage |
| Tear gas / chemical neutralization | $3,000 - $7,000 | Agent identification, building age/materials, air system involvement |
What drives price variation: the specific biohazard agent, how long it has affected materials, whether subflooring or wall cavities are involved, and whether HVAC systems require cleaning. Seattle’s older housing stock - particularly in Capitol Hill, Central District, and West Seattle - often contains original plaster and hardwood that demand specialized remediation approaches versus modern drywall and carpet.
How to avoid overpaying: demand a written scope that separates biohazard remediation from reconstruction, verify that disposal fees are itemized rather than lumped, and confirm that post-cleanup testing is included, not an add-on. Our Free Second Opinion on any competitor’s written estimate lets you compare line items directly. Every DryMark Restoration Seattle estimate includes the full photo record, disposal documentation, and our 365-Day Done Right Promise - no upsells, no scope creep once our crew is inside your property.
Biohazard & Crime Scene Cleanup Near Seattle - Our Service Area
We maintain 60-90 minute response times for active biohazard situations across Seattle proper and extend scheduled assessments throughout the metro: Bellevue and Kirkland across Lake Washington, Redmond and Sammamish to the east, Renton and Tukwila to the south, SeaTac and Burien near the airport corridor, and north to Lynnwood, Bothell, and Issaquah. Manchester on the Kitsap Peninsula and the island communities are reachable for scheduled work with advance coordination. Each market carries distinct considerations - Bellevue’s newer construction with sealed building envelopes, Kirkland’s hillside homes with crawlspace access challenges, Renton’s industrial mix with workplace exposure protocols - and our crews arrive prepared for the specific conditions.
Serving Seattle, WA - Our Local Coverage Area
We’re based in the Seattle area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions - Biohazard & Crime Scene Cleanup in Seattle
Biohazard and crime scene cleanup is the professional remediation of biological and chemical contaminants including blood, bodily fluids, decomposition residue, infectious disease agents, and tear gas or forensic chemicals. The work requires specialized training, personal protective equipment, licensed medical waste disposal, and documented verification that surfaces meet sanitation standards. In Seattle, this service is most commonly needed after unattended death, traumatic injury, crime scene release by law enforcement, or infectious disease outbreak.
Most contained biohazard cleanups complete in 4-8 hours; unattended death scenes with subfloor involvement typically require 1-3 days including drying time; and extensive hoarding or tear gas remediation may extend to a week. Timeline depends on contamination spread, material porosity, and whether structural drying or reconstruction follows the biohazard phase. We provide a written timeline with our scope, and our daily photo record shows exactly what was accomplished each day. Call (425) 671-5392 for a site-specific estimate.
Biohazard cleanup in Seattle ranges from $1,500 for contained blood cleanup to $10,000+ for extensive hoarding or chemical remediation, with most trauma and unattended death scenes at $2,500-$4,500. Price depends on square footage affected, contamination type, structural penetration, and disposal requirements. Our written estimate itemizes each component before work begins - Haven Standard, Clause 1 - with no additions once the crew is on site. Call (425) 671-5392 for your specific quote; estimates are free.
Yes. We clean single-family homes, apartments and condos, office buildings, retail spaces, industrial facilities, and vehicles throughout the Seattle metro. Commercial jobs require additional documentation for OSHA compliance and workers’ compensation coordination, which we provide as standard. Our background-checked, uniformed technicians carry license documentation and arrive in marked vehicles for any property type.
Yes. A live person answers every call to (425) 671-5392, 24 hours a day, 7 days a week - no voicemail trees, no next-business-day callbacks while contamination remains active. For active biohazard scenes with ongoing health risk, we dispatch within 60-90 minutes in the Seattle metro. For situations that are contained but require prompt attention, we schedule assessment within 24 hours.
Every biohazard cleanup carries our 365-Day Done Right Promise under The Haven Standard: if any aspect of the remediation fails to meet the documented scope, we return and make it right at no additional cost. This is a signed warranty, not a verbal assurance, and it applies to both the biohazard remediation and any drying or reconstruction work we perform. The warranty transfers to new property owners if you sell within the coverage period.
Do not enter the affected area or attempt cleaning - disturbance spreads contamination and creates exposure risk. Secure pets in a separate area, gather insurance policy information if available, and provide any law enforcement or coroner release documentation. Our technician handles everything else: assessment, containment, removal, disinfection, testing, and documentation. If you’re unsure whether your situation requires professional biohazard cleanup, call (425) 671-5392 and we’ll advise based on what you describe.
Schedule Your Biohazard & Crime Scene Cleanup Service in Seattle Today
Call (425) 671-5392 now for immediate dispatch or to schedule your free assessment. A live person answers every call, 24 hours a day, 7 days a week. You’ll receive a written price before any work begins, a documented photo record on every visit, and our 365-Day Done Right Promise backed by The Haven Standard. Bring any competitor’s written estimate for a Free Second Opinion at no charge.
Written by Alicia Brennan, Owner at Back to Dry Restoration, serving Seattle since 2011.