diff --git a/src/main/java/edu/group5/app/model/Repository.java b/src/main/java/edu/group5/app/model/Repository.java
new file mode 100644
index 0000000..d0d2792
--- /dev/null
+++ b/src/main/java/edu/group5/app/model/Repository.java
@@ -0,0 +1,20 @@
+package edu.group5.app.model;
+
+/**
+ * Represents a repository
+ */
+public abstract class Repository {
+  protected final Object content;
+
+  public Repository(Object content) {
+    this.content = content;
+  }
+
+  /**
+   * Gets the content of the repo
+   * @return content of the repo
+   */
+  public Object getContent() {
+    return content;
+  }
+}
diff --git a/src/main/java/edu/group5/app/model/organization/Organization.java b/src/main/java/edu/group5/app/model/organization/Organization.java
index 825945f..885f0ed 100644
--- a/src/main/java/edu/group5/app/model/organization/Organization.java
+++ b/src/main/java/edu/group5/app/model/organization/Organization.java
@@ -1,5 +1,50 @@
 package edu.group5.app.model.organization;
 
-public class Organization {
-  
+import java.util.Objects;
+
+/**
+ * Represents an organization.
+ *
+ * <p>An organization is identified by an organization number, a name,
+ * trust status, website URL, pre-approval status, and a textual description.
+ *
+ * <p>Instances are validated on creation:
+ * <ul>
+ *   <li>orgNumber must be non-negative</li>
+ *   <li>name and websiteURL must not be null or blank</li>
+ *   <li>description must not be null</li>
+ * </ul>
+ */
+public record Organization(int orgNumber, String name, boolean trusted, String websiteURL, boolean isPreApproved,
+                           String description) {
+  /**
+   * Creates a new organization.
+   *
+   * @param orgNumber the organization number; must be non-negative
+   * @param name the organization name; must not be null or blank
+   * @param trusted whether the organization is trusted
+   * @param websiteURL the organization's website URL; must not be null or blank
+   * @param isPreApproved whether the organization is pre-approved
+   * @param description a textual description of the organization; must not be null
+   * @throws NullPointerException if name, websiteURL or description is null
+   * @throws IllegalArgumentException if orgNumber is negative, or if name or websiteURL is blank
+   */
+  public Organization(int orgNumber, String name, boolean trusted, String websiteURL, boolean isPreApproved, String description) {
+    if (orgNumber < 0) {
+      throw new IllegalArgumentException("orgNumber cannot be negative");
+    }
+    this.orgNumber = orgNumber;
+    this.name = Objects.requireNonNull(name, "name cannot be null");
+    this.trusted = trusted;
+    this.websiteURL = Objects.requireNonNull(websiteURL, "websiteURL cannot be null");
+    this.isPreApproved = isPreApproved;
+    this.description = Objects.requireNonNull(description, "description cannot be null");
+
+    if (name.isBlank()) {
+      throw new IllegalArgumentException("name cannot be blank");
+    }
+    if (websiteURL.isBlank()) {
+      throw new IllegalArgumentException("websiteURL cannot be blank");
+    }
+  }
 }
diff --git a/src/main/java/edu/group5/app/model/organization/OrganizationRepo.java b/src/main/java/edu/group5/app/model/organization/OrganizationRepo.java
new file mode 100644
index 0000000..27b128f
--- /dev/null
+++ b/src/main/java/edu/group5/app/model/organization/OrganizationRepo.java
@@ -0,0 +1,40 @@
+package edu.group5.app.model.organization;
+
+import edu.group5.app.model.Repository;
+
+import java.util.HashMap;
+import java.util.Objects;
+
+/**
+ * Handles business logic associated with organizations
+ */
+public class OrganizationRepo extends Repository {
+  private final HashMap<Integer, Organization> content;
+
+  /**
+   * Creates a new Organization Repository
+   *
+   * @param content holds all current organizations in the repository
+   * @throws NullPointerException if content is null
+   */
+  public OrganizationRepo(HashMap<Integer, Organization> content) {
+    this.content = Objects.requireNonNull(content, "content cannot be null");
+    super(content);
+  }
+
+  /**
+   * Gets all trusted organizations in the repository
+   * @return all organizations with trusted = true
+   */
+  public HashMap<Integer, Organization> getTrustedOrganizations() {
+    HashMap<Integer, Organization> trustedOrgs = new HashMap<>();
+
+    content.forEach((orgNr, org) -> {
+      if (org.trusted()) {
+        trustedOrgs.put(orgNr, org);
+      }
+    });
+
+    return trustedOrgs;
+  }
+}
diff --git a/src/test/java/edu/group5/app/model/organization/OrganizationRepoTest.java b/src/test/java/edu/group5/app/model/organization/OrganizationRepoTest.java
new file mode 100644
index 0000000..780bf8e
--- /dev/null
+++ b/src/test/java/edu/group5/app/model/organization/OrganizationRepoTest.java
@@ -0,0 +1,4 @@
+import static org.junit.jupiter.api.Assertions.*;
+class OrganizationRepoTest {
+  
+}
\ No newline at end of file
diff --git a/src/test/java/edu/group5/app/model/organization/OrganizationTest.java b/src/test/java/edu/group5/app/model/organization/OrganizationTest.java
new file mode 100644
index 0000000..3b086c3
--- /dev/null
+++ b/src/test/java/edu/group5/app/model/organization/OrganizationTest.java
@@ -0,0 +1,86 @@
+package edu.group5.app.model.organization;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class OrganizationTest {
+  
+  @Test
+  void constructor_ThrowsWhenOrgNumberIsNegative() {
+    assertThrows(IllegalArgumentException.class, () -> {new Organization(
+        -1,
+        "Org",
+        true,
+        null,
+        true,
+        "Org description"
+    );
+    });
+  }
+
+  @Test
+  void constructor_ThrowsWhenNameIsNull() {
+    assertThrows(NullPointerException.class, () -> {new Organization(
+        1,
+        null,
+        true,
+        "org.com",
+        true,
+        "Org description"
+    );
+    });
+  }
+
+  @Test
+  void constructor_ThrowsWhenNameIsBlank() {
+    assertThrows(IllegalArgumentException.class, () -> {new Organization(
+        1,
+        "",
+        true,
+        "org.com",
+        true,
+        "Org description"
+    );
+    });
+  }
+
+  @Test
+  void constructor_ThrowsWhenWebsiteURLIsNull() {
+    assertThrows(NullPointerException.class, () -> {new Organization(
+        1,
+        "Org",
+        true,
+        null,
+        true,
+        "Org description"
+    );
+    });
+  }
+
+  @Test
+  void constructor_ThrowsWhenWebsiteURLIsBlank() {
+    assertThrows(IllegalArgumentException.class, () -> {new Organization(
+        1,
+        "Org",
+        true,
+        "",
+        true,
+        "Org description"
+    );
+    });
+  }
+
+  @Test
+  void constructor_ThrowsWhenDescriptionIsNull() {
+    assertThrows(NullPointerException.class, () -> {new Organization(
+        1,
+        "Org",
+        true,
+        "org.com",
+        true,
+        null
+    );
+    });
+  }
+}
\ No newline at end of file