diff --git a/install.ps1 b/install.ps1
old mode 100644
new mode 100755
index 48c7e99..dc144fc
--- a/install.ps1
+++ b/install.ps1
@@ -64,6 +64,20 @@ Test-GitVersion
 
 $force = $args -contains "--force"
 
+# Check if there is enough free space
+$requiredSpace = 1100MB # 1100 MiB as bytes
+$installDrive = (Split-Path -Qualifier $installDirectory).TrimEnd(':') # Drive letter install directory
+$freeSpace = (Get-PSDrive -Name $installDrive).Free # Free space in bytes
+if ($freeSpace -lt $requiredSpace) {
+    if ($force) {
+        Write-Output "Attempting Shorebird install with less than 1100 MiB of free space."
+    }
+    else {
+        Write-Output "Error: Not enough free space. At least 1100 MiB is required. Use --force to install anyway."
+        exit 1
+    }
+}
+
 if (Test-Path $installDirectory) {
     if ($force) {
         Write-Output "Existing Shorebird installation detected. Overwriting..."
diff --git a/install.sh b/install.sh
index a3cba7d..1333fbe 100755
--- a/install.sh
+++ b/install.sh
@@ -94,6 +94,19 @@ if [ $GIT_VERSION_COMPARISON -eq 2 ]; then
   exit 1
 fi
 
+# Check if there is enough free space
+REQUIRED_SPACE=$((1100 * 1024)) # 1100 MiB in KiB
+INSTALL_VOLUME="$(dirname "$(install_dir)")" # Location of the install directory
+FREE_SPACE=$(df -k $INSTALL_VOLUME | tail -1 | awk '{print $4}') # Free space in KiB
+if [ $FREE_SPACE -lt $REQUIRED_SPACE ]; then
+  if [ "$FORCE" = true ]; then
+    echo "Attempting Shorebird install with less than 1100 MiB of free space."
+  else
+    echo >&2 "Error: Not enough free space. At least 1100 MiB is required. Use --force to install anyway."
+    exit 1
+  fi
+fi
+
 # Check if install_dir already exists
 if [ -d "$(install_dir)" ]; then
   if [ "$FORCE" = true ]; then