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What is a Party Wall Agreement 

Posted on Mar 12, 2026


A party wall agreement in British Columbia is a legal agreement between two neighbouring property owners that explains how a shared wall or structure (most often in a duplex or semi-detached home) is owned, maintained, repaired, and used. It is commonly used when a property is not part of a strata, so instead of being governed by strata bylaws under the Strata Property Act, the owners rely on this private agreement to set out their responsibilities.

What it usually covers

A party wall agreement typically includes:
  • Who is responsible for maintenance and repairs to the shared wall
  • How costs are shared between the owners
  • Insurance requirements for both sides
  • What happens if one owner wants to renovate or alter the wall
  • Access rights if repairs or inspections are needed
  • Dispute resolution if disagreements occur
  • Structural and soundproofing standards
The goal is to protect both owners and prevent future conflicts.

How to find a party wall agreement

If one exists, it is usually registered on title or referenced in legal documents. Here’s where to look:
  1. Title search through the BC Land Title and Survey Authority
  2. Ask your real estate agent or lawyer to check the legal documents
  3. Review the Property Disclosure Statement
  4. Check with the seller or developer (for newer builds)
  5. Review any covenants or easements attached to the title
Sometimes the agreement is not registered, so it may only be a private contract between the owners. In that case, it should be provided by the seller during the purchase process.

Why it is important

A party wall agreement helps:
  • Clarify responsibilities and avoid disputes
  • Protect your investment
  • Ensure proper insurance and maintenance
  • Provide clear rules when selling or renovating
If you’re buying a duplex or semi-detached home in BC, it’s always a good idea to have a lawyer review the agreement so you fully understand your obligations.If you’d like, I can also explain the difference between a party wall agreement and a duplex strata, or what to watch for before purchasing.

Disclaimer

The information provided in these posts is for general informational purposes only and should not be construed as legal, financial, or professional advice. The content is not intended to create, and receipt of it does not constitute, a client relationship or the provision of professional advice of any kind. No individual or entity should act or refrain from acting based solely on the information contained in this blog, any linked materials, or related content without first seeking appropriate legal or professional counsel. While every effort has been made to ensure the accuracy and reliability of the information presented, no liability or responsibility is assumed for any errors, omissions, or the outcomes resulting from the use or reliance upon this material. Readers are strongly encouraged to consult qualified professional advisors before making decisions based on any information contained herein.

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