Buying guide

Due diligence checklist for buying a website

A practical due diligence checklist for buying a website or online business: financials, traffic, SEO, operations, legal and transfer.

By Patrick Babakhanian · Updated September 27, 2026

Verify at the source, not from screenshots. Work through this list before you fund escrow.

Financials

  • Monthly P&L for 12 to 24 months, reconciled to bank or processor statements
  • Revenue by source and by customer (concentration)
  • Every expense, including contractors, tools and ad spend
  • Add-backs justified with documents
  • Refunds, chargebacks and seasonality

Traffic and SEO

  • Read-only Google Analytics and Search Console access
  • Traffic by channel and by page (top-page concentration)
  • Algorithm update history and recoveries
  • Backlink profile and any manual actions
  • Wayback history of the domain

Operations

  • Owner hours by task
  • Contractors and whether they stay
  • SOPs and tools
  • Supplier terms (ecommerce)
  • Code quality and hosting (SaaS)

Legal and ownership

  • Ownership of the domain, content, trademarks and accounts
  • Assignable contracts and affiliate agreements
  • No pending disputes or policy violations

Transfer plan

  • A written list of every asset and account
  • Who does what, by when
  • Escrow inspection period and acceptance criteria

Every listing on yourdomain shows which figures are verified and which are seller-reported.

Questions, answered

Frequently asked questions

How long should due diligence take?

Typically 1 to 3 weeks for small websites, longer for larger or more complex businesses.

What is the biggest red flag?

Numbers that cannot be reconciled to a source, or a seller who will not share read-only access.