This week’s question
Six years ago, our viewer built a client site, and the business has since changed hands. While that’s a common occurrence in the industry, what the new owner decided to do isn’t. Here’s exactly how our viewer put it:
I built a client site about six years ago on a .ca domain. The client was great to work for, but the business has since been sold to a new owner, who's very tech savvy. He built a new site and launched it on the matching .com domain, instead of replacing the site I built. Now there are two competing websites. His SEO and Google Ads person is already flagging keyword cannibalization and duplicate content. I wanted to know what you thought of this strategy, and the caution around it.
As you can see, our viewer is already onto something: keyword cannibalization and duplicate content. Those are real issues that arise when running competing websites on almost identical domains.
Why two sites from the same business can cause SEO issues
Businesses can have as many websites as they want. Microsoft, for example, has its umbrella corporate site (microsoft.com), then has one for gaming (xbox.com), and one for its productivity software (office.com).
You can see, though, that all of those websites, while under the same corporation, serve entirely different purposes. The issues arise when two websites try to advertise the exact same business. Nathan didn’t hesitate on this one:
It's a terrible idea to launch competing websites.
Our viewer also mentioned that even the SEO person of the new website is already fighting the consequences of this decision. The core of the problem comes down to this: a single business has only so much search demand to go around. Splitting that demand between two websites doesn’t multiply it. Instead, it divides it. Nathan also had this to add:
You're even fighting your own paid ad strategy by trying to rank a new site against the same keywords.
That means every dollar spent on ads for the new domain, and every hour spent building its content, is working against the old site’s own existing organic rankings rather than alongside them.
Speaking of content, if the new site copy is too similar to the original, that’s the textbook definition of duplicated content. The SEO person had already spotted that, and Nathan didn’t mince words what that does to a brand-new domain going up against an established one:
It's going to get dinged for duplicate content and not even, you know, it's not going to get ranked.
The domain age and authority problem
We’ve said how duplicate sites can cause trouble for each other’s SEO, so let’s unpack why that is. Before we move on, there are three terms that are relevant here.
As you can see, it’s good to have older domains with already established ranking, content, backlinks, etc. But when you have a similar domain with equally similar content, the duplicate content problem is a real risk.
The word “penalty” isn’t quite the correct framing so it matters how agency owners, and our viewer, explain it to their clients. Google won’t dock your site for it. Instead, the way it works is, when Google finds multiple pages on sites with the same or very similar core content, it clusters them together and picks one version to show in search results.
Google will choose the most complete and useful website, with an established history of content, backlinks, and trust signals to show in search results. This is called canonicalization.
Thus, in almost all cases, the end result is similar to a penalty for the newer site. It gets treated as the copy, therefore doesn’t appear in the search results, and Nathan agrees wholeheartedly:
Google is always going to see the first, original site as the authoritative source of the content.
This is exactly why domain authority and history matter so much when a business is deciding whether to launch a fresh site or build on what already exists. We’ve written before why a domain name isn’t just a technical detail. The blog includes how a domain’s track record of quality content and backlinks can work in a site’s favour, long before a single new page goes live.
That equity is what gets thrown away when a business walks away from a working, ranking site.
What a smart transition looks like
Of course, this doesn’t mean a business can never rebrand, relaunch, or move to a new domain. It, however, means that the goal should be consolidation and not duplication.
If a business genuinely needs a new look or a new platform, the existing site’s authority should be carried forward, not abandoned. What that typically means is building a new site and replacing the old one on the same domain. That preserves the domain’s history and credibility.
And if the website needs a new domain, then a proper migration is necessary. Below are the three most important steps but you can also watch our Content Audit livestream for a full break down of the process:
A business shouldn’t have two live sites competing for the same keywords and audience. Nathan’s read on our viewer’s case was insightful and showed how hasty some owners can be:
He did the very last thing without figuring out all the other steps.
The excitement for a new site usually arrives well before anyone has thought through what happens to the rankings. That’s why it’s good to watch for this with any client going through an ownership change or a rebrand. Have this conversation right at the start, not after the sites are already competing with each other.
The bottom line
A second website may feel like progress, like expanding the brand. It’s more online presence, more real estate, more chances to show up in search. However, when it’s built for the same business that already has an existing and ranking site, it’s just unnecessary competition.
It turns from more chances to get eyes on the brand to just splitting the audience, wasting ad budgets, and forcing the new site to live in obscurity. The fix isn’t avoiding change. Businesses get sold, rebrand, or outgrow their platforms every day. Instead, preserving the site’s rankings, backlinks, and history is what’s worth carrying forward into whatever comes next.
Finally, if you have any questions on how to handle such a migration or want to learn more about WordPress, web hosting, AI or agency work, join us for Office Hours, every Thursday at 2 p.m. EST.
FAQ
Does having two websites for the same business always count as duplicate content?
Not automatically. Two sites only run into duplicate content problems when their core content overlaps closely, such as the same page copy, product descriptions, or service pages appearing on both domains. Two genuinely distinct sites, for example a corporate site and a separate community or support site, can coexist without this issue.
If we do need to launch on a new domain, is there a way to avoid losing our old site's SEO value?
Yes. Redirecting old URLs to their new equivalents with 301 redirects, migrating content rather than duplicating it, and retiring the old domain (rather than running it alongside the new one) all help carry forward existing authority instead of starting from zero.
How long does it typically take for a new site to catch up to an established one in search rankings?
There's no fixed timeline, since it depends heavily on the strength of the existing site's backlink profile and content history. In general, a new domain competing against an established one with years of trust signals should expect this to take a long time, which is exactly why consolidating onto the existing domain is usually the faster path.
Our ad strategy and organic strategy are handled by different people. How do we make sure they're not working against each other?
Make sure both sides are targeting the same domain and, ideally, the same core keyword set rather than splitting focus across two sites. A quick shared review of which URLs each strategy is built around can catch this kind of conflict before it costs you money and rankings.