NAP stands for Name, Address, Phone number. It sounds basic. But inconsistent NAP data across the web is one of the most common reasons local businesses plateau in rankings despite doing everything else right.
Why NAP Consistency Matters
Google verifies business information by cross-referencing it across hundreds of online directories, social platforms, and websites. When your business name appears as ‘Smith Plumbing’, ‘Smith Plumbing LLC’, and ‘Smith Plumbing Services’ across different directories, Google loses confidence in which information is correct. That uncertainty translates directly into lower local rankings.
Common NAP Inconsistency Sources
The most common inconsistencies I find during audits: business name variations (with and without LLC, Inc, or the owner’s name), old address from a previous location, old phone number from before a switch, suite or unit number appearing on some listings but not others, and variations between ‘Street’ and ‘St’, ‘Avenue’ and ‘Ave’.
These seem minor. They are not. To a human they read as the same business. To Google’s algorithm, they are different data points that conflict with each other.
How to Fix It
First, decide on the exact canonical version of your NAP. Write it down. Every field, every abbreviation or non-abbreviation, exact punctuation. This becomes your source of truth.
Then audit every place your business appears online. I use Whitespark Citation Finder for this – it surfaces directories you did not even know you were listed on. For each inconsistent listing, claim the profile and update it to match your canonical NAP exactly.
This process typically takes 2-4 weeks to complete thoroughly. The ranking improvements usually follow within 60-90 days as Google recrawls and reindexes the corrected listings.
Prevention
Once your NAP is consistent, keep it that way. Any time your business moves, changes phone number, or rebrands, run a full citation audit within 30 days. The longer inconsistencies sit, the more they compound.