Clearsite

Trusted Phase I ESA Due
Diligence Experts.

ASTM E1527-21 · CSA Z768-01 · Regulatory Compliant Environmental
Reports

Protect Your Investment

Comprehensive environmental assessments that identify potential liabilities before they become costly problems. Starting at $750

Close Deals Faster

Expedited turnaround times and streamlined processes designed for time-sensitive transactions. Volume Discounts

Underwrite Confidently

Detailed risk analysis and clear recommendations to support informed decision-making. Risk Assessment

Developers

Due Diligence

Portfolio Deals

Fast Turnaround

599+

Phase I ESAs Successfully Completed

99%

Ontario-Wide Coverage

Clients Across Ontario

Trusted by homeowners, realtors, and insurers for comprehensive environmental due diligence.

See What You'll Receive

Our Phase I ESA reports are comprehensive, clearly structured, and fully compliant with ASTM E1527-21 standards. Download a sample to review our format, methodology, and reporting quality.

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