Avoided Conversion Project

Denman Island

The Denman Island Avoided Conversion of Forestlands Project encompasses 493 hectares of forest on the north-central part of Denman Island in British Columbia (BC). It was validated under ISO and the CCBA standard and achieved ISO verification and will generate 430,000 tC02e over the next 100 years. The site is also home to the federally endangered Taylor’s Checkerspot butterfly.

Our Involvement

Ostrom secured carbon financing to complete the purchase and enable its protection as a BC Park. They led and managed the development of the project design document and the third-party audit processes that led to successful validation, verification, and issuance of verified carbon offsets.


The Denman project was successfully third-party validated and verified to ISO 14064 and won a BC Premier’s Award for Innovation and Excellence.

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