NAP stands for Name, Address, Phone Number. In local SEO, NAP consistency means that your business name, physical address, and phone number are identical everywhere they appear online: your website, your Google Business Profile, Yelp, the BBB, Angi, industry directories, your Facebook page, your Chamber of Commerce listing, and every other place that lists your business.

When those details match, Google trusts that your business information is accurate. When they don’t match, Google has a problem. It’s looking at your business and seeing conflicting data, and conflicting data means lower confidence, which means lower ranking.

This is one of the simplest concepts in local SEO. It’s also one of the most commonly broken.

Why Google cares about your NAP

Google’s job is to show searchers accurate results. When someone searches “plumber near me,” Google needs to be confident that the businesses it recommends are real, located where they claim, and reachable at the phone number listed.

Google checks your information across hundreds of sources. It compares what’s on your Google Business Profile to what’s on your website, what’s in online directories, and what’s in data aggregator databases that feed those directories. When everything matches, Google sees consistency as a trust signal. Your business is who it says it is, where it says it is.

When the information doesn’t match, Google sees a reliability problem. If your GBP says “123 Main Street, Suite 200” but Yelp says “123 Main St” and the BBB says “123 Main Street Ste 200,” those are technically three different strings. Humans can tell they’re the same address. Google’s systems are more literal than that.

Whitespark’s annual local ranking factor survey puts citation signals, which include NAP consistency, at about 7% of Map Pack ranking. That might sound small next to the 32% that comes from your Google Business Profile or the 20% from reviews. But 7% is the difference between showing up in the three-pack and being invisible below it. In competitive markets, small percentage swings decide who gets the calls.

The most common NAP problems

I audit local businesses every week, and the same NAP issues come up repeatedly.

Old phone numbers. The business switched to a new phone number two years ago and updated their website and GBP, but the old number is still listed on 30 directory sites. Some of those directories pulled the old number from data aggregators, and the aggregators still have the outdated data. Every listing with the wrong number creates a conflict.

Address variations. “Street” vs “St.” vs “St” doesn’t usually cause problems on its own, but add in suite number variations, missing zip code extensions, and outdated addresses from a previous office location, and the inconsistencies stack up. A business that moved locations three years ago can easily have 20 directory listings pointing to the old address.

Business name mismatches. If your legal name is “Johnson & Sons Plumbing LLC” but your GBP says “Johnson’s Plumbing” and Yelp says “Johnson and Sons Plumbing,” that’s three different business names. Google sees three entities, not one. This is especially common with businesses that rebranded or added a DBA.

Duplicate listings. Some businesses have two or three Google Business Profile listings, created accidentally or by a former marketing agency. Each duplicate has its own NAP information, and they compete with each other instead of reinforcing one consistent identity. Google’s guidance is explicit: one listing per location.

Tracking phone numbers. Some marketing agencies assign a unique tracking number to each directory listing so they can measure which directories generate calls. This solves a measurement problem but creates a NAP consistency problem. If your GBP has one number and your Yelp has another and your BBB has a third, Google sees inconsistency even though the calls all route to the same place.

How to audit your NAP

The fastest way to check is to search your business name in quotes on Google: “Your Business Name” + your city. Look at the first two pages of results. Open every directory listing, every review site, every mention. Write down the name, address, and phone number on each one. Then compare.

You’re looking for exact matches. Not “close enough.” The name, every word of the address including suite and zip, and the phone number should be character-for-character identical on every source.

There are also free tools that automate this. Moz Local lets you check your listing accuracy across major directories. BrightLocal’s Citation Tracker does the same. Even a manual check of your top 10 listings will surface the biggest problems.

The directories that matter most for NAP consistency are the ones Google checks most frequently: your own website, Google Business Profile, Yelp, Facebook, BBB, Angi, Thumbtack, Apple Maps, and Bing Places. Get those right first. Then work outward to industry-specific directories and local chambers of commerce.

For a broader look at what citations are and whether they still matter, I wrote a separate deep dive. The short answer: citations have less weight than they did five years ago, but NAP consistency within those citations is still a measurable factor.

How to fix NAP problems

Step 1: Pick the canonical version. Decide exactly how your business name, address, and phone number should appear. Write it down. This is your canonical NAP, and everything else needs to match it. Use the same format that appears on your Google Business Profile, since that’s the listing Google trusts most.

Step 2: Update your website. Your site’s footer, contact page, and any location pages should display the canonical NAP. If you use schema markup, the LocalBusiness schema should contain the same information. Your website is the source you control completely, so start there.

Step 3: Claim and update directory listings. Go through each directory listing you found in your audit. Claim any unclaimed listings. Update the NAP on each one to match your canonical version. This is tedious work. There’s no shortcut. Each directory has its own login, its own editing process, and its own verification timeline.

Step 4: Update data aggregators. Four major data aggregators feed information to hundreds of smaller directories: Data Axle (formerly Infogroup), Neustar Localeze, Foursquare, and Factual. If your information is wrong in an aggregator, it will propagate wrong data to every directory that pulls from it. Updating the aggregators is how you fix the problem at the source instead of playing whack-a-mole with individual directories.

Step 5: Remove duplicates. If you have duplicate GBP listings, request removal of the extras through Google Business Profile Manager. If you have duplicate listings on directories, merge them or delete the outdated ones.

Step 6: Monitor over time. NAP consistency isn’t a one-time fix. Directories refresh data from aggregators, aggregators pull from public records, and new listings get created without your knowledge. Check your major listings quarterly. Set a calendar reminder.

What happens when you fix it

The impact isn’t instant, but it’s measurable. BrightLocal has documented cases where businesses saw Map Pack ranking improvements within 4-8 weeks of cleaning up NAP inconsistencies. The improvement comes from two things: Google gains higher confidence in your business information, and the citation signals that feed into your ranking become reinforcing instead of conflicting.

I worked with a contractor whose business had moved two years prior. His old address was still on 25 directory listings. His Google Business Profile had the correct new address, but the old address was creating a conflict signal. We updated every listing to the current address, cleaned up two name variations, and removed a duplicate GBP. Within six weeks, his Map Pack position improved by two spots for his primary keyword.

That’s not a dramatic before-and-after. NAP consistency alone won’t take you from invisible to number one. But if your Google Business Profile is complete, your review velocity is healthy, and your NAP is clean, you’re removing friction from every ranking factor instead of letting conflicting data hold you back.

The bottom line

NAP consistency is housekeeping. It’s not glamorous, and no one is going to get excited about making sure their suite number is formatted correctly on 30 websites. But inconsistent NAP information is one of the most common reasons local businesses underperform in search relative to their actual quality.

If you’ve never audited your NAP, do it once. Fix the obvious problems. Then check quarterly. The businesses that rank well in local search tend to be the ones that got the basics right and kept them right.

If you want to see how your overall local presence stacks up, I built a free audit tool that checks the signals Google actually uses to rank local businesses. Takes 30 seconds.