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ActiveWordpress-plugin[Utility & Helpers](/categories/utility)

unloc/bag-address-lookup
========================

Auto-fill Dutch addresses in WooCommerce Block Checkout using Kadaster BAG API

0265↓20%PHP

Since Mar 16Pushed 2mo agoCompare

[ Source](https://github.com/unlocnl/bag-address-lookup)[ Packagist](https://packagist.org/packages/unloc/bag-address-lookup)[ RSS](/packages/unloc-bag-address-lookup/feed)WikiDiscussions main Synced 1mo ago

READMEChangelogDependenciesVersions (4)Used By (0)

```
=== Dutch Address Lookup for WooCommerce (BAG API) ===
Contributors: unlocnl
Tags: woocommerce, postcode, checkout, netherlands, address
Requires at least: 6.4
Tested up to: 6.9
Requires PHP: 8.1
Stable tag: 1.0.0
License: GPLv2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
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.

== Description ==

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](https://www.kadaster.nl/zakelijk/producten/adressen-en-gebouwen/bag-api-individuele-bevragingen)

== Installation ==

1. Upload the plugin to `/wp-content/plugins/bag-address-lookup`
2. Activate through the Plugins menu
3. Go to WooCommerce → Settings → Advanced → BAG Address Lookup
4. Enter your Kadaster BAG API key
5. Done — checkout will now auto-fill Dutch addresses

== Frequently Asked Questions ==

= Do I need an API key? =

Yes, but it's completely free. Request your API key from the Kadaster (Dutch Land Registry) at [kadaster.nl](https://www.kadaster.nl/zakelijk/producten/adressen-en-gebouwen/bag-api-individuele-bevragingen). There are no usage fees. The daily limit is 50,000 requests, and this plugin caches results for 24 hours.

= Does this work with the classic WooCommerce checkout? =

No. This plugin only works with the WooCommerce Block Checkout (the default since WooCommerce 8.3).

= What happens if the address is not found? =

The street and city fields are shown and the customer can fill them in manually. Checkout is never blocked.

= Does this plugin work for other countries than The Netherlands? =

No. The BAG is a Dutch government registry. The plugin only activates when the country is set to The Netherlands.

== Screenshots ==

1. Checkout with auto-filled Dutch address
2. Settings page under WooCommerce → Advanced

== Privacy ==

This plugin sends the customer's postcode and house number to the [Kadaster BAG API](https://www.kadaster.nl/zakelijk/producten/adressen-en-gebouwen/bag-api-individuele-bevragingen) to look up the corresponding street name and city. No other personal data is transmitted. The Kadaster is a Dutch government agency; their privacy policy can be found at [kadaster.nl](https://www.kadaster.nl/privacy).

Results are cached on your server for 24 hours to minimize external requests.

== Changelog ==

= 1.0.0 =
* Initial release
```

###  Health Score

25

—

LowBetter than 37% of packages

Maintenance58

Moderate activity, may be stable

Popularity16

Limited adoption so far

Community6

Small or concentrated contributor base

Maturity16

Early-stage or recently created project

 Bus Factor1

Top contributor holds 100% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Every ~2 days

Total

3

Last Release

82d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/1ed9daf065d180c07266fb155fa37e2c2a567f43dde72d5138a8cb1b771a7c9a?d=identicon)[unlocdavid](/maintainers/unlocdavid)

---

Top Contributors

[![unlocdavid](https://avatars.githubusercontent.com/u/75703724?v=4)](https://github.com/unlocdavid "unlocdavid (15 commits)")

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![Health badge](/badges/unloc-bag-address-lookup/health.svg)

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