BAG Address Lookup
Auto-fills street and city in WooCommerce Block Checkout based on Dutch postcode and house number using the free Kadaster BAG API.
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Install
No release zip yet. The repository archive installs, but the folder name will carry the branch suffix and updates will not flow:
wp plugin install https://github.com/unlocnl/bag-address-lookup/archive/refs/heads/main.zipAlso on Packagist as unloc/bag-address-lookup:
composer require unloc/bag-address-lookupFrom the readme
WC requires at least: 8.6
WC tested up to: 10.4
Auto-fills street and city in WooCommerce Block Checkout for Dutch addresses using the free Kadaster BAG API.
Automatically looks up Dutch addresses based on postcode and house number during WooCommerce checkout. Uses the official Kadaster BAG API (Basisregistratie Adressen en Gebouwen) — completely free (50,000 requests/day). Reduces input errors and speeds up the checkout process for customers in the Netherlands.
Features:
Uses the free Kadaster BAG API — no subscription, no usage fees (50k requests/day)
Auto-fills street name and city based on postcode + house number
Works with WooCommerce Block Checkout
Only activates for Dutch addresses (The Netherlands selected in the country select)
API key stays server-side (proxied through your site)
Non-blocking: manual entry still possible if address not found
Inline validation: warns when a Dutch address is missing a house number
House number field is hidden from order details, emails, and admin — it's already part of the address
Requirements:
A free Kadaster BAG API key — request one here
1. Upload the plugin to /wp-content/plugins/bag-address-lookup
2. Activate through th