diff --git a/.githooks/pr-size-check.sh b/.githooks/pr-size-check.sh
new file mode 100755
index 0000000000..ba710b49bb
--- /dev/null
+++ b/.githooks/pr-size-check.sh
@@ -0,0 +1,110 @@
+#!/usr/bin/env bash
+# ============================================================
+# PR Size Check — Reusable Hook Logic
+#
+# Do NOT call this directly. It is sourced by the pre-push hook
+# with repo-specific config already set:
+#
+#   MAX_LINES          — line change limit (default: 500)
+#   EXTRA_EXCLUDES     — bash array of additional regex patterns
+# ============================================================
+
+MAX_LINES="${MAX_LINES:-500}"
+
+# ── Common exclusions (all repos) ────────────────────────────
+# Kept in sync with .github/workflows/pr-size-check-reusable.yml
+COMMON_EXCLUDES=(
+  "\.pbxproj$"
+  "\.xcscheme$"
+  "\.xcsettings$"
+  "\.xcconfig$"
+  "\.xctestplan$"
+  "\.xcworkspace/"
+  "\.xcodeproj/"
+  "\.plist$"
+  "\.entitlements$"
+  "\.storyboard$"
+  "\.xib$"
+  "\.xcassets/"
+  "\.modulemap$"
+  "\.xcprivacy$"
+  "\.strings$"
+  "\.stringsdict$"
+  "\.xcstrings$"
+  "\.ya?ml$"
+  "\.lock$"
+  "\.(png|jpe?g|gif|bmp|svg|webp|heic|heif|tiff?|ico|pdf|icns)$"
+  "\.(mp4|mov|m4v|avi|mpe?g|webm|mp3|wav|aiff?|m4a)$"
+  "\.md$"
+  "\.mdx$"
+)
+
+# ── Merge common + repo-specific exclusions ───────────────────
+ALL_EXCLUDES=("${COMMON_EXCLUDES[@]}" "${EXTRA_EXCLUDES[@]}")
+
+# ── Resolve base branch — tries origin/dev, origin/main, origin/master ──────
+BASE_BRANCH=""
+for candidate in origin/dev origin/main origin/master; do
+  if git show-ref --verify --quiet "refs/remotes/${candidate}"; then
+    BASE_BRANCH="$candidate"
+    break
+  fi
+done
+
+if [ -z "$BASE_BRANCH" ]; then
+  echo "ℹ️  PR size check skipped: no remote base branch found."
+  exit 0
+fi
+
+MERGE_BASE=$(git merge-base HEAD "$BASE_BRANCH" 2>/dev/null)
+if [ -z "$MERGE_BASE" ]; then
+  echo "ℹ️  PR size check skipped: no common ancestor with ${BASE_BRANCH}."
+  exit 0
+fi
+
+# ── Count lines changed (excluding patterns & binaries) ──────
+TOTAL_LINES=0
+while IFS=$'\t' read -r added deleted filepath; do
+  [ -z "$filepath" ] && continue
+
+  # Check exclusion first
+  excluded=false
+  for pattern in "${ALL_EXCLUDES[@]}"; do
+    if [[ "$filepath" =~ $pattern ]]; then
+      excluded=true
+      break
+    fi
+  done
+  [ "$excluded" = true ] && continue
+
+  # Binary/submodule: git diff --numstat reports "-" for these
+  if [ "$added" = "-" ] || [ "$deleted" = "-" ]; then
+    echo "⚠️  Binary or submodule change in non-excluded file: $filepath"
+    continue
+  fi
+
+  TOTAL_LINES=$((TOTAL_LINES + added + deleted))
+done < <(git diff --numstat "$MERGE_BASE"...HEAD 2>/dev/null)
+
+# ── Warn if over limit ────────────────────────────────────────
+if [ "$TOTAL_LINES" -gt "$MAX_LINES" ]; then
+  echo ""
+  echo "⚠️  WARNING: Your push contains ~${TOTAL_LINES} line changes (limit: ${MAX_LINES})."
+  echo "   Excluded paths match the PR Size Check workflow."
+  echo "   Consider splitting this into smaller PRs."
+  echo ""
+  echo "   To push anyway:  git push --no-verify"
+  echo "   To cancel:       Ctrl+C"
+  echo ""
+  if [ -t 1 ] && [ -r /dev/tty ]; then
+    read -r -p "   Push anyway? [y/N]: " response < /dev/tty
+    if [[ ! "$response" =~ ^[Yy]$ ]]; then
+      echo "Push cancelled."
+      exit 1
+    fi
+  else
+    echo "   Non-interactive shell detected; allowing push."
+  fi
+fi
+
+exit 0
diff --git a/.githooks/pre-push b/.githooks/pre-push
new file mode 100755
index 0000000000..9478ae4ada
--- /dev/null
+++ b/.githooks/pre-push
@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+# ============================================================
+# Pre-push hook — PR Size Soft Warning
+# Repo: microsoft-authentication-library-for-objc
+#
+# Fires on every push to any remote branch.
+# Bypass with: git push --no-verify
+# ============================================================
+
+EXTRA_EXCLUDES=(
+  "^MSAL/test/"
+  "^MSAL/IdentityCore/"
+  "^Samples/"
+)
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$SCRIPT_DIR/pr-size-check.sh"
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000000..80f9c0a276
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,5 @@
+setup:
+git config core.hooksPath .githooks
+@echo "✅ Git hooks configured. Pre-push PR size check is now active."
+
+.PHONY: setup