Standard PAF lists deliverable addresses, but some scenarios need more granularity. Two optional datasets extend coverage where the core file stops.
Multiple Residence (MR)
MR data identifies individual sub-premises — such as flats, bedsits or rooms — that share a single delivery point in core PAF. It's valuable for utilities, property and any business that bills individual occupants.
Not Yet Built (NYB)
NYB data lists addresses for properties under construction before they enter the main file, so you can capture customers at brand-new developments without "address not found" errors.
When core PAF is enough
- Standard ecommerce checkout and shipping
- CRM and marketing address capture
- General address verification and standardisation
Access the right data
Talk to us about coverage on the contact page, see PAF data access, or return to the PAF guide hub.
Frequently asked questions
What is Multiple Residence data?
Multiple Residence (MR) data supplements PAF with individual sub-premises — like flats or bedsits within a single delivery point — that aren't separately listed in the core file.
What is Not Yet Built data?
Not Yet Built (NYB) data lists addresses for developments under construction before they appear in the main PAF, helping capture customers at brand-new properties.
Do I need these datasets?
Most businesses are well served by core PAF, but property, utilities and developers often benefit from Multiple Residence and Not Yet Built data for complete coverage.
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