diff --git a/hubzilla/addon/assoc_profile/assoc_profile.apd b/hubzilla/addon/assoc_profile/assoc_profile.apd
new file mode 100644
index 0000000..8db10df
--- /dev/null
+++ b/hubzilla/addon/assoc_profile/assoc_profile.apd
@@ -0,0 +1,7 @@
+version: 2
+url: $baseurl/assoc_profile
+requires: local_channel
+name: Association Profile
+photo: icon:building
+categories: Civic Diagnostics
+desc: Structured diagnostic identity fields for HOA association channels.
diff --git a/hubzilla/addon/assoc_profile/assoc_profile.php b/hubzilla/addon/assoc_profile/assoc_profile.php
new file mode 100644
index 0000000..ade6295
--- /dev/null
+++ b/hubzilla/addon/assoc_profile/assoc_profile.php
@@ -0,0 +1,378 @@
+<?php
+
+/**
+ * Name: Association Profile
+ * Description: Structured diagnostic identity fields for HOA association channels.
+ * Version: 0.1.0
+ * MinVersion: 11.0
+ * MaxVersion: 12.0
+ */
+
+function assoc_profile_module() {}
+
+function assoc_profile_load() {
+    register_hook('profile_edit', 'addon/assoc_profile/assoc_profile.php', 'assoc_profile_edit_hook');
+    register_hook('profile_view', 'addon/assoc_profile/assoc_profile.php', 'assoc_profile_view_hook');
+}
+
+function assoc_profile_unload() {
+    unregister_hook('profile_edit', 'addon/assoc_profile/assoc_profile.php', 'assoc_profile_edit_hook');
+    unregister_hook('profile_view', 'addon/assoc_profile/assoc_profile.php', 'assoc_profile_view_hook');
+}
+
+// ----------------------------------------------------------------------------
+// HELPERS
+// ----------------------------------------------------------------------------
+
+function assoc_h($value) {
+    return htmlspecialchars((string) $value, ENT_QUOTES, 'UTF-8');
+}
+
+function assoc_slug_from_address($channel_address) {
+    // channel_address is "slug@node" — extract the slug
+    $parts = explode('@', $channel_address);
+    return $parts[0] ?? '';
+}
+
+// ----------------------------------------------------------------------------
+// REGISTRY I/O
+// ----------------------------------------------------------------------------
+
+function assoc_load_config() {
+    $path = 'addon/assoc_profile/config.json';
+    $raw  = @file_get_contents($path);
+    if ($raw === false) return [];
+    $data = json_decode($raw, true);
+    return (json_last_error() === JSON_ERROR_NONE) ? $data : [];
+}
+
+function assoc_load_registry() {
+    $config = assoc_load_config();
+    $path   = $config['registry_file']
+              ?? 'addon/assoc_profile/assoc_registry.json';
+    $raw    = @file_get_contents($path);
+    if ($raw === false) {
+        logger('assoc_profile: registry file not found: ' . $path);
+        return [];
+    }
+    $data = json_decode($raw, true);
+    if (json_last_error() !== JSON_ERROR_NONE) {
+        logger('assoc_profile: registry file malformed: ' . $path);
+        return [];
+    }
+    // Strip meta keys
+    foreach (['_note','_version','_slug_format','_select_values'] as $k) {
+        unset($data[$k]);
+    }
+    return $data;
+}
+
+function assoc_write_registry($data) {
+    $config = assoc_load_config();
+    $path   = $config['registry_file']
+              ?? 'addon/assoc_profile/assoc_registry.json';
+    $json   = json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
+    if ($json === false) {
+        logger('assoc_profile: failed to encode registry');
+        return false;
+    }
+    $result = file_put_contents($path, $json, LOCK_EX);
+    if ($result === false) {
+        logger('assoc_profile: failed to write registry: ' . $path);
+        return false;
+    }
+    return true;
+}
+
+function assoc_get($slug) {
+    $registry = assoc_load_registry();
+    return $registry[$slug] ?? null;
+}
+
+// ----------------------------------------------------------------------------
+// VALIDATION
+// ----------------------------------------------------------------------------
+
+function assoc_allowed_values() {
+    return [
+        'assoc_type'                 => ['Condominium','Master','CIC','Unincorporated','UNK','Disputed'],
+        'assoc_mgmt_certified'       => ['Yes','No','UNK'],
+        'assoc_sos_standing'         => ['Active','Dissolved','UNK'],
+        'assoc_declaration_recorded' => ['Yes','No','UNK'],
+    ];
+}
+
+function assoc_validate_select($field, $value) {
+    $allowed = assoc_allowed_values();
+    if (!isset($allowed[$field])) return true;
+    return in_array($value, $allowed[$field], true);
+}
+
+function assoc_field_names() {
+    return [
+        'assoc_legal_name', 'assoc_type', 'assoc_statute',
+        'assoc_street', 'assoc_city', 'assoc_county', 'assoc_state',
+        'assoc_zip', 'assoc_placekey', 'assoc_website',
+        'assoc_buildings', 'assoc_units', 'assoc_year_built', 'assoc_stories',
+        'assoc_mgmt_company', 'assoc_mgmt_contact', 'assoc_mgmt_certified',
+        'assoc_sos_id', 'assoc_sos_standing',
+        'assoc_declaration_recorded', 'assoc_declaration_instrument',
+        'assoc_registered', 'assoc_updated',
+    ];
+}
+
+// ----------------------------------------------------------------------------
+// PROFILE EDIT HOOK
+// ----------------------------------------------------------------------------
+
+function assoc_profile_edit_hook(&$b) {
+    if (!local_channel()) return;
+
+    $channel = App::get_channel();
+    $slug    = assoc_slug_from_address($channel['channel_address'] ?? '');
+    if (!$slug) return;
+
+    $entry = assoc_get($slug);
+    if (!$entry) return;
+
+    // Only channel owner may edit
+    if (local_channel() !== intval($channel['channel_id'])) return;
+
+    if (function_exists('head_add_css')) {
+        head_add_css('/addon/assoc_profile/view/css/assoc_profile.css');
+    }
+
+    $b['html'] .= assoc_render_edit_form($slug, $entry);
+}
+
+// ----------------------------------------------------------------------------
+// PROFILE VIEW HOOK
+// ----------------------------------------------------------------------------
+
+function assoc_profile_view_hook(&$b) {
+    $profile  = $b['profile'] ?? [];
+    $uid      = intval($profile['uid'] ?? 0);
+    if (!$uid) return;
+
+    $r = q("SELECT channel_address FROM channel WHERE channel_id = %d LIMIT 1",
+           intval($uid));
+    if (!$r) return;
+
+    $slug  = assoc_slug_from_address($r[0]['channel_address']);
+    $entry = assoc_get($slug);
+    if (!$entry) return;
+
+    if (function_exists('head_add_css')) {
+        head_add_css('/addon/assoc_profile/view/css/assoc_profile.css');
+    }
+
+    $b['html'] .= assoc_render_view($entry);
+}
+
+// ----------------------------------------------------------------------------
+// RENDER — VIEW
+// ----------------------------------------------------------------------------
+
+function assoc_render_view($entry) {
+    $labels = assoc_field_labels();
+    $groups = assoc_field_groups();
+
+    $out  = '<div class="assoc-profile-view">';
+    $out .= '<h4 class="assoc-profile-heading">Association Diagnostic Profile</h4>';
+
+    foreach ($groups as $group_label => $fields) {
+        $out .= '<div class="assoc-profile-group">';
+        $out .= '<h5 class="assoc-group-label">' . assoc_h($group_label) . '</h5>';
+        foreach ($fields as $field) {
+            $val = $entry[$field] ?? '';
+            if ($val === '') $val = '—';
+            if (in_array($val, ['UNK'])) $val = 'Unknown — not yet verified';
+            $out .= '<div class="assoc-profile-field">';
+            $out .= '<span class="assoc-field-label">' . assoc_h($labels[$field] ?? $field) . '</span>';
+            $out .= '<span class="assoc-field-value">' . assoc_h($val) . '</span>';
+            $out .= '</div>';
+        }
+        $out .= '</div>';
+    }
+
+    $out .= '</div>';
+    return $out;
+}
+
+// ----------------------------------------------------------------------------
+// RENDER — EDIT FORM
+// ----------------------------------------------------------------------------
+
+function assoc_render_edit_form($slug, $entry) {
+    $labels  = assoc_field_labels();
+    $groups  = assoc_field_groups();
+    $allowed = assoc_allowed_values();
+
+    $out  = '<div class="assoc-profile-edit">';
+    $out .= '<h4 class="assoc-profile-heading">Association Diagnostic Profile</h4>';
+    $out .= '<form method="post" action="/assoc_profile/save" class="assoc-edit-form">';
+    $out .= '<input type="hidden" name="assoc_slug" value="' . assoc_h($slug) . '">';
+    $out .= assoc_csrf_token();
+
+    foreach ($groups as $group_label => $fields) {
+        $out .= '<div class="assoc-profile-group">';
+        $out .= '<h5 class="assoc-group-label">' . assoc_h($group_label) . '</h5>';
+        foreach ($fields as $field) {
+            if (in_array($field, ['assoc_registered', 'assoc_updated'])) continue;
+            $val   = $entry[$field] ?? '';
+            $label = $labels[$field] ?? $field;
+            if (isset($allowed[$field])) {
+                $out .= assoc_render_select($field, $label, $val, $allowed[$field]);
+            } else {
+                $out .= assoc_render_text($field, $label, $val);
+            }
+        }
+        $out .= '</div>';
+    }
+
+    $out .= '<div class="mt-3">';
+    $out .= '<button type="submit" class="btn btn-primary btn-sm">Save Association Profile</button>';
+    $out .= '</div>';
+    $out .= '</form></div>';
+    return $out;
+}
+
+function assoc_render_text($field, $label, $value) {
+    $id = assoc_h($field);
+    return '<div class="assoc-field-wrap mb-2">
+                <label class="form-label" for="' . $id . '">' . assoc_h($label) . '</label>
+                <input type="text" class="form-control form-control-sm"
+                       id="' . $id . '" name="' . $id . '"
+                       value="' . assoc_h($value) . '">
+            </div>';
+}
+
+function assoc_render_select($field, $label, $value, $options) {
+    $id  = assoc_h($field);
+    $out = '<div class="assoc-field-wrap mb-2">';
+    $out .= '<label class="form-label" for="' . $id . '">' . assoc_h($label) . '</label>';
+    $out .= '<select class="form-select form-select-sm" id="' . $id . '" name="' . $id . '">';
+    foreach ($options as $opt) {
+        $sel  = ($value === $opt) ? 'selected' : '';
+        $disp = ($opt === 'UNK') ? 'Unknown — not yet verified' : $opt;
+        $out .= '<option value="' . assoc_h($opt) . '" ' . $sel . '>' . assoc_h($disp) . '</option>';
+    }
+    $out .= '</select></div>';
+    return $out;
+}
+
+// ----------------------------------------------------------------------------
+// SAVE HANDLER
+// ----------------------------------------------------------------------------
+
+function assoc_profile_content() {
+    if (argv(1) !== 'save') return '';
+    if ($_SERVER['REQUEST_METHOD'] !== 'POST') return '';
+    if (!local_channel()) return '';
+    if (!assoc_verify_csrf()) {
+        return '<div class="alert alert-danger">Invalid form token.</div>';
+    }
+
+    $slug = substr(strip_tags($_POST['assoc_slug'] ?? ''), 0, 128);
+    if (!$slug) return '<div class="alert alert-danger">Missing association slug.</div>';
+
+    $registry = assoc_load_registry();
+    if (!isset($registry[$slug])) {
+        return '<div class="alert alert-danger">Association not found in registry.</div>';
+    }
+
+    // Verify caller is channel owner for this slug
+    $channel = App::get_channel();
+    if (assoc_slug_from_address($channel['channel_address'] ?? '') !== $slug) {
+        return '<div class="alert alert-danger">Not authorized.</div>';
+    }
+
+    $allowed = assoc_allowed_values();
+    $fields  = assoc_field_names();
+
+    foreach ($fields as $field) {
+        if (in_array($field, ['assoc_registered', 'assoc_updated'])) continue;
+        if (!isset($_POST[$field])) continue;
+        $val = substr(strip_tags((string) $_POST[$field]), 0, 512);
+        if (isset($allowed[$field]) && !assoc_validate_select($field, $val)) continue;
+        $registry[$slug][$field] = $val;
+    }
+
+    $registry[$slug]['assoc_updated'] = date('Y-m-d');
+
+    if (assoc_write_registry($registry)) {
+        goaway(z_root() . '/profile/' . $slug);
+    }
+
+    return '<div class="alert alert-danger">Failed to save. Check server logs.</div>';
+}
+
+// ----------------------------------------------------------------------------
+// FIELD METADATA
+// ----------------------------------------------------------------------------
+
+function assoc_field_labels() {
+    return [
+        'assoc_legal_name'             => 'Legal Name',
+        'assoc_type'                   => 'Association Type',
+        'assoc_statute'                => 'Governing Statute',
+        'assoc_street'                 => 'Street Address',
+        'assoc_city'                   => 'City',
+        'assoc_county'                 => 'County',
+        'assoc_state'                  => 'State',
+        'assoc_zip'                    => 'ZIP Code',
+        'assoc_placekey'               => 'Placekey',
+        'assoc_website'                => 'Association Website',
+        'assoc_buildings'              => 'Number of Buildings',
+        'assoc_units'                  => 'Number of Units',
+        'assoc_year_built'             => 'Year Built',
+        'assoc_stories'                => 'Stories Per Building',
+        'assoc_mgmt_company'           => 'Management Company',
+        'assoc_mgmt_contact'           => 'Management Contact',
+        'assoc_mgmt_certified'         => 'Manager IDFPR Certified',
+        'assoc_sos_id'                 => 'SOS Entity File Number',
+        'assoc_sos_standing'           => 'Corporate Standing',
+        'assoc_declaration_recorded'   => 'Declaration Recorded',
+        'assoc_declaration_instrument' => 'Declaration Instrument No.',
+        'assoc_registered'             => 'Registered Date',
+        'assoc_updated'                => 'Last Updated',
+    ];
+}
+
+function assoc_field_groups() {
+    return [
+        'Identity' => [
+            'assoc_legal_name','assoc_type','assoc_statute',
+            'assoc_street','assoc_city','assoc_county',
+            'assoc_state','assoc_zip','assoc_placekey','assoc_website',
+        ],
+        'Physical Structure' => [
+            'assoc_buildings','assoc_units','assoc_year_built','assoc_stories',
+        ],
+        'Governance and Management' => [
+            'assoc_mgmt_company','assoc_mgmt_contact','assoc_mgmt_certified',
+            'assoc_sos_id','assoc_sos_standing',
+            'assoc_declaration_recorded','assoc_declaration_instrument',
+        ],
+        'Record' => [
+            'assoc_registered','assoc_updated',
+        ],
+    ];
+}
+
+// ----------------------------------------------------------------------------
+// CSRF
+// ----------------------------------------------------------------------------
+
+function assoc_csrf_token() {
+    if (empty($_SESSION['assoc_profile_csrf'])) {
+        $_SESSION['assoc_profile_csrf'] = bin2hex(random_bytes(16));
+    }
+    return '<input type="hidden" name="assoc_profile_csrf" value="'
+         . assoc_h($_SESSION['assoc_profile_csrf']) . '">';
+}
+
+function assoc_verify_csrf() {
+    return isset($_POST['assoc_profile_csrf'], $_SESSION['assoc_profile_csrf'])
+        && hash_equals($_SESSION['assoc_profile_csrf'], $_POST['assoc_profile_csrf']);
+}
diff --git a/hubzilla/addon/assoc_profile/assoc_registry.json.template b/hubzilla/addon/assoc_profile/assoc_registry.json.template
new file mode 100644
index 0000000..367a652
--- /dev/null
+++ b/hubzilla/addon/assoc_profile/assoc_registry.json.template
@@ -0,0 +1,37 @@
+{
+  "_note": "Copy to assoc_registry.json on the host. Do not commit assoc_registry.json — it contains operator-managed association data. Owned by www-data. One entry per association, keyed by slug.",
+  "_version": "1.0",
+  "_slug_format": "Lowercase, hyphens only. Must match the key in config.json associations and argv(1) in addon routes.",
+  "_select_values": {
+    "assoc_type": ["Condominium", "Master", "CIC", "Unincorporated", "UNK", "Disputed"],
+    "assoc_mgmt_certified": ["Yes", "No", "UNK"],
+    "assoc_sos_standing": ["Active", "Dissolved", "UNK"],
+    "assoc_declaration_recorded": ["Yes", "No", "UNK"]
+  },
+  "REPLACE-SLUG": {
+    "_note": "Replace REPLACE-SLUG with the association slug, e.g. arbors-bgca",
+    "assoc_legal_name": "REPLACE — full legal name as recorded with Illinois Secretary of State",
+    "assoc_type": "UNK",
+    "assoc_statute": "",
+    "assoc_street": "REPLACE — street address of the property",
+    "assoc_city": "REPLACE — city",
+    "assoc_county": "REPLACE — county, e.g. Cook County",
+    "assoc_state": "IL",
+    "assoc_zip": "REPLACE — ZIP code",
+    "assoc_placekey": "REPLACE — Placekey, e.g. 247-222@5sb-8bs-y35",
+    "assoc_website": "",
+    "assoc_buildings": "UNK",
+    "assoc_units": "UNK",
+    "assoc_year_built": "",
+    "assoc_stories": "",
+    "assoc_mgmt_company": "",
+    "assoc_mgmt_contact": "",
+    "assoc_mgmt_certified": "UNK",
+    "assoc_sos_id": "",
+    "assoc_sos_standing": "UNK",
+    "assoc_declaration_recorded": "UNK",
+    "assoc_declaration_instrument": "",
+    "assoc_registered": "REPLACE — ISO date, e.g. 2026-06-15",
+    "assoc_updated": "REPLACE — ISO date, e.g. 2026-06-15"
+  }
+}
diff --git a/hubzilla/addon/assoc_profile/config.json.template b/hubzilla/addon/assoc_profile/config.json.template
new file mode 100644
index 0000000..9d400bb
--- /dev/null
+++ b/hubzilla/addon/assoc_profile/config.json.template
@@ -0,0 +1,4 @@
+{
+  "_note": "Copy to config.json. Do not commit config.json.",
+  "registry_file": "REPLACE — absolute path to assoc_registry.json on the host, e.g. /var/www/hubzilla/addon/assoc_profile/assoc_registry.json"
+}
diff --git a/hubzilla/addon/assoc_profile/mod_assoc_profile.pdl b/hubzilla/addon/assoc_profile/mod_assoc_profile.pdl
new file mode 100644
index 0000000..4bf8ec7
--- /dev/null
+++ b/hubzilla/addon/assoc_profile/mod_assoc_profile.pdl
@@ -0,0 +1,5 @@
+[template]default[/template]
+
+[region=content]
+$content
+[/region]