Our Mission
Who We Are
Founded in 1982, we are a private, non-profit organization of island residents and other interested citizens.
Conserve
We work to conserve wild or undeveloped open space, scenic areas, and historic landmarks in the Casco Bay region.
Balance
We strive to balance human use and enjoyment with protecting the natural environment of Casco Bay for future generations.

Invasive Marine Species
The presence of invasive species often indicates changing ecosystems. See our new Invasive Marine Species page with informative links on these species in the Casco Bay region.

Oceanside Conservation Trust is a nationally-accredited land trust with stewardship of seventeen properties on the Casco Bay Islands.
News & Events
Support our work by making a donation, becoming a member, or signing up for our mailing list today.
Donate & Become a Member
Your donation helps us to fulfill our mission. Oceanside Conservation Trust of Casco Bay is a 501(C)(3) charitable organization. Donations are tax deductible.
Join Our Mailing List
Sign up for our mailing list and stay up to date about Oceanside Conservation Trust of Casco Bay news and events. We send mailings and email newsletters several times per year. We never share or sell our mailing list.
Stakeholder Notification/Public Notice
The land trust accreditation program recognizes land conservation organizations that meet national quality standards for protecting important natural places and working lands forever. Oceanside Conservation Trust of Casco Bay is pleased to announce it is applying for accreditation renewal. A public comment period is now open.
The Land Trust Accreditation Commission, an independent program of the Land Trust Alliance, conducts an extensive review of each applicant’s policies and programs. Oceanside has been accredited since 2015 and believes that accreditation is an indication that we can be a trusted partner in protecting and stewarding land.
The Commission invites public input and accepts signed, written comments on pending applications. Comments must relate to how Oceanside Conservation Trust of Casco Bay complies with national quality standards. These standards address the ethical and technical operation of a land trust. For the full list of standards see http://www.landtrustaccreditation.org/help-and-resources/indicator-practices.
To learn more about the accreditation program and to submit a comment, visit www.landtrustaccreditation.org, or email your comment to info@landtrustaccreditation.org. Comments may also be mailed to the Land Trust Accreditation Commission, Attn: Public Comments, 36 Phila Street, Suite 2, Saratoga Springs, NY 12866.
Comments on Oceanside Conservation Trust of Casco Bay’s application will be most useful by November 18, 2025.