How do you handle lead duplicates?
The easiest way to handle lead duplicates is to catch them before they multiply: use a system that flags matches as they come in, then merge or delete manually. When you're pulling leads from Facebook, Google, your website, and referrals all at once, duplicates happen. Here's how to stop wasting time on the same prospect twice.
Check your phone number and email first
Before you do anything else, search for the most recent duplicate by phone number. A contractor in Charlotte might get the same lead from a Google ad and a Facebook ad within hours. Same phone, same name, different entry time. Open your lead list and search 704-555-1234. If it's there twice, you have duplicates. Email works the same way. A customer filling out your website form and clicking your Google ad creates two records instantly. One quick search prevents you from calling the same person twice and sounding unprofessional. This also catches typos early—a lead entered as "Michael" and "Micheal" from the same number are the same person. Most CRMs let you search by phone or email in seconds.
Set up automatic duplicate detection if your system has it
Some CRM platforms flag potential duplicates when a new lead comes in. They compare phone numbers, emails, or names and mark matches automatically. This saves you from manually checking every lead. A roofing contractor in Austin running five ad campaigns can get 40 leads a day. Reviewing each one for duplicates manually takes 20 minutes. Automatic detection cuts that to two minutes. If your current tool doesn't have this, it's worth asking during a demo. The system doesn't have to be perfect—it just needs to catch 70 or 80 percent of duplicates so you spend your energy on the real prospects. You still review flagged leads before merging them, but the heavy lifting is done.
Merge the duplicate, then delete the older entry
When you confirm two records are the same person, merge them into one. Keep the entry with the most complete information. If one has a phone number and the other has a note about their roofing project, merge both details into the single record. Then delete the duplicate completely. This prevents confusion later when your crew gets assigned to the job. You don't want a painter showing up at the same address twice because two separate lead records were created. After merging, update the source field to show it came from multiple channels. That's useful information—it tells you this lead found you more than once, which means strong intent. Delete the old entry so you're not counting it twice in your lead metrics.
Use the same naming convention across all sources
Duplicates are harder to spot when the data looks different. If your website form captures "Johnson, Michael" and your Facebook ad captures "Michael Johnson," they won't match as obviously. Set a standard format: always Last, First or always First Last. Same with phone numbers. Store them with the same format every time: (XXX) XXX-XXXX or XXX-XXX-XXXX. Pick one and stick to it. When all your leads look the same, duplicates jump out at you. This is especially useful if you're hiring someone to manage leads or if you're growing and adding another person to your team. They won't waste time wondering if "Mike" and "Michael" are the same person. A plumbing company in Denver that's consistent with data entry catches duplicates in seconds instead of minutes.
Bottom line
Search by phone number or email every time a new lead comes in, use automatic detection if your system offers it, and keep your naming and formatting consistent. Duplicates cost you time and hurt your reputation when you call the same prospect twice.