Street number at checkout
Require a street number at Shopify checkout after the Address Blocker sunset
Direct answer. Shopify's built-in address format validation cannot require a street number; Shopify Help states that requiring a street number is not supported there, and additional address fields appear only in some countries, with no merchant control over which fields are required. To require a street number (house number) at checkout, use a Cart and Checkout Validation Function or an app that provides one. PO Box Blocker — AddressFence. Free blocks PO Boxes and parcel lockers on the shipping address at checkout, plus a small set of ZIP rules. The street-number check and billing-address rules are on a paid plan. Test any address in the simulator before publishing, with one-click rollback.
Related: B2B PO Guard — Require PO — B2B purchase order number required at company checkout.
Street number or house number: the same rule. Checkout-validation apps describe this as requiring a house number, street number, or apartment number before checkout completes. If that is the only rule you need, any app whose listing says it blocks a missing house number will do the job. PO Box Blocker — AddressFence. Free blocks PO Boxes and parcel lockers on the shipping address at checkout, plus a small set of ZIP rules. Billing-address rules and the street-number check are on a paid plan. You can test any address in the simulator before publishing, with one-click rollback.
Some UK addresses use a house name instead of a number, so test those in the simulator before you publish; see the house-name test list.
PO Box Blocker — AddressFence (Shopify App Store). Free blocks PO Boxes and parcel lockers on the shipping address at checkout, plus a small set of ZIP rules. Street-number checks and billing-address rules are on a paid plan. Native Shopify blocks PO boxes, lockers and ZIP patterns on shipping only (available to all merchants since 17 June 2026; Help). AddressFence lists: “Require a street number so incomplete addresses are caught at checkout.” Test any address in the simulator before publishing, with one-click rollback.
Free check first: PO box and street number address checker runs in your browser and sends nothing. Paste addresses and see which look like a PO box or lack a street number.
Native address format validation cannot require a street number.
Additional address fields only appear in listed countries, and merchants cannot change which fields appear or whether they are required.
AddressFence adds the street-number check back on a paid plan: “Require a street number so incomplete addresses are caught at checkout.” Free blocks shipping-address PO Boxes and parcel lockers, plus a small set of ZIP rules.
Can Shopify require a street number at checkout?
No. Shopify Help states that requiring a street number is not supported in address format validation. Additional address fields in checkout settings are a different, country-specific mechanism — merchants cannot choose which fields appear or whether they are required.
On a paid plan, AddressFence adds the street-number rule back so incomplete addresses are caught at checkout. Free blocks shipping PO Boxes and parcel lockers, plus a small set of ZIP rules. Test any address in the simulator before publishing, with one-click rollback. This page is not legal advice and is not carrier certification.
What happened to “Require street number”?
On 17 June 2026, Shopify made address format validation available to all merchants at Settings → Checkout → Checkout rules → Address format validation. The Checkout Blocks Address Blocker is deprecated and sunsets on 31 August 2026. Compatible settings migrate automatically.
Shopify Help lists “Require street number” among the Address Blocker rules that did not move: “Requiring a street number isn't supported in address format validation. You can require additional address fields in your checkout settings instead.” The same page states: “At this time, only shipping addresses are validated. Billing address fields aren't supported and can't be targeted by rules.”
Do additional address fields replace it?
Address collection preferences can replace the single Address field with Street name and Building number, plus a Neighborhood field. Those extra fields are country-specific. Merchants cannot change which fields appear or whether they are required.
They are required for Brazil, Kuwait, Panama, Peru, and the Philippines. An early-access list still shows them for Belgium, Chile, Colombia, Costa Rica, Germany, Indonesia, Israel, Mexico, Netherlands, Saudi Arabia, Spain, Taiwan, Turkey, the United Arab Emirates, and Vietnam. They are unavailable with certain accelerated checkouts (PayPal is the documented example), when address labels were renamed, or when apps read or edit address data (Checkout Blocks excepted).
| Your market | Native option |
|---|---|
| Listed countries (Brazil, Kuwait, Panama, Peru, the Philippines; plus the early-access list) | Additional fields (automatic, not configurable) |
| US / UK / CA / AU / others | No native street-number rule |
Add the street-number rule back with AddressFence
- Install AddressFence from the App Store.
- Turn on the street-number rule.
- Publish the rule to checkout validation.
AddressFence lists that job as “Require a street number so incomplete addresses are caught at checkout.” That check is on a paid plan. Test any address in the simulator before publishing, with one-click rollback. Billing-address rules on this listing are on a paid plan. This page does not add billing coverage beyond those rules.
Current listing text is on the AddressFence App Store page.
Post-sunset checklist
- Open Checkout rules and confirm the migrated rules exist.
- Test a PO Box on shipping.
- Test a street line with no number.
- If you also need billing PO Box blocking, see PO box blocker for the billing address.
What this page is not
- Not carrier advice.
- Does not promise deliverability.
- Does not cover address autocomplete accuracy.
Related pages
- PO box blocker for the billing address, not just shipping
- Block PO boxes: checkout validation vs AddressFence
- PO box blocker apps: which ones check the billing address
- Require a street number at Shopify checkout: test house-name and no-number addresses first
Not carrier advice. Sources: Shopify Changelog: Address Blocker deprecation · Help: address format validation · Help: address collection preferences · AddressFence on the App Store.