Quick summary
Domain authority is not a Google ranking factor, but it can still be a useful way to measure the overall strength of your website compared with competitors. Google does not rank websites based on DA scores from Moz, Ahrefs or Semrush. Instead, it looks at things like content quality, backlinks, trust, relevance and user experience. For most local businesses and trades, focusing on useful content, local SEO and relevant backlinks matters far more than chasing a specific DA number.
Domain authority is one of those SEO phrases that sounds more official than it really is.
Domain Authority, usually shortened to DA, is a score created by Moz that estimates how strong a website is from an SEO perspective. The score ranges from 0 to 100, with higher scores generally meaning a website has stronger authority, trust and ranking potential. A brand new registered domain normally starts with a DA of 0 because it has no backlinks, authority or SEO history yet. In most cases, a higher domain authority score is considered better because it often reflects stronger backlinks, more reputable referring domains and a more established online presence.
A lot of business owners hear things like “your domain authority is too low” or “you need a DA of 50 to rank”. That makes it sound like Google has a big score next to your website and decides where to rank you based on that number.
It doesn’t.
Domain Authority, often shortened to DA, was created by Moz. It is a third-party domain authority score that predicts how likely a website is to rank in search results. It is not a Google score, and Google does not use Moz Domain Authority as a ranking factor (Moz).
Domain authority for local businesses vs national businesses
Domain authority tends to matter differently depending on the type of business and the level of competition. For local service businesses such as plumbers, electricians, builders or dentists, a lower DA website can still rank very well because local SEO is heavily influenced by relevance, location, reviews and Google Business Profile optimisation.
A local roofing company with a DA of 15 can still outrank larger companies for searches in its town or region if its website is more locally relevant and useful.
National and international businesses, however, are often competing against huge brands with thousands of backlinks, strong content marketing, established digital marketing teams and very strong authority signals. In those more competitive markets, higher authority can become more important because Google has many similar websites to choose from. That means businesses targeting national or international keywords usually need stronger backlink profiles, more topical authority, better internal linking and a larger overall SEO presence to compete consistently.
So, is domain authority meaningless?
No. But it is often misunderstood.
Domain authority is not meaningless, but it is not the thing Google is directly looking at.
A simple way to think about it:
Domain authority is like a credit score for your website. It can give you a rough idea of website authority, trust and competitiveness. But Google is not logging into Moz, Ahrefs or Semrush and using that number to rank your pages.
Ahrefs has its own version called Domain Rating, which measures the strength of a website’s backlink profile (Ahrefs).
Semrush has Authority Score, often called Semrush Authority Score, which looks at backlinks, estimated organic traffic and spam signals (Semrush).
Other SEO tools use different seo metrics too. Majestic, for example, uses Trust Flow to help assess link quality. These scores are useful for SEO professionals, but they are still third-party measurements rather than part of the Google algorithm.
What does Google actually say?
Google’s own advice focuses on useful content, technical accessibility, crawlable links, spam avoidance and giving people a good experience (Google Search Central).
Google says its systems are designed to prioritise helpful, reliable, people-first content, not content made mainly to manipulate rankings (Google Search Central).
Google also warns against spammy tactics, including link abuse, because those can cause pages or entire websites to rank lower or disappear from search results (Google Search Central).
So the real answer is:
Google does not care about your DA score.
Google does care about many of the things that can influence your DA score.
Why high authority sites often rank better
This is where people get confused.
A website with a high domain authority often has:
- Lots of good-quality inbound links
- Links from reputable websites
- More referring domains and root domains
- Strong brand recognition
- Useful content
- More mentions across the web
- Better trust signals
- More pages already ranking
Those things can help with SEO.
But the DA score itself is not causing the rankings. It is more like a speedometer in a car. The speedometer shows how fast you are going, but it is not the thing making the car move. In SEO terms, getting more useful content, better backlinks, stronger local signals and a better user experience are the actual engine. The DA score is simply reflecting the results of those improvements.
Semrush makes a similar point by saying authority-style scores can help you compare competitors and assess SEO strength, but they are based on signals like backlinks, traffic and spam patterns (Semrush).
What this means for trades and local businesses
For a plumber, builder, electrician, roofer, landscaper or local service business, chasing domain authority is usually the wrong focus.
You do not need to beat national websites at everything.
You need to be more useful and more relevant for your local customers.
For example, a small roofing company in Perth does not need a DA of 80 to get enquiries. It needs strong local service pages, helpful content, reviews, Google Business Profile visibility, clear contact details, fast-loading pages and relevant local links.
A local business with a modest site authority can still rank well for searches like:
- emergency plumber in Dundee
- garden fencing West Lothian
- garage conversion Reading
- bathroom fitter near me
That is because Google is looking at relevance, location, quality, trust and usefulness, not just some third-party authority number.
When domain authority is useful
Domain authority can be useful when you use it as a comparison tool.
You can use it to:
- Compare your website with similar competitors
- Spot stronger websites in your industry
- Check if your SEO effort is moving in the right direction
- Assess link building opportunities
- Understand ranking potential
- Compare page authority and domain authority across different pages and websites
- Look at your website’s domain authority alongside other SEO metrics in your chosen SEO tool
Ahrefs says its Domain Rating looks at the quantity and quality of external backlinks to a website (Ahrefs).
That makes it useful for understanding link strength.
But it should never be your main SEO goal.
When domain authority becomes a problem
Domain authority becomes a problem when people obsess over the score.
That can lead to poor decisions, such as:
- Buying dodgy backlinks
- Joining link farms
- Paying for irrelevant guest posts
- Ignoring actual customer questions
- Writing thin content just to get links
- Thinking a higher DA automatically means more leads
Google’s spam policies are clear that manipulative link practices can harm visibility in search (Google Search Central).
For trades, this matters because you do not need hundreds of random backlinks from unrelated websites. You need trust, relevance and proof that your business is real.
A link from a local supplier, trade body, chamber of commerce, local newspaper or happy commercial client is usually far more valuable than a random “high DA” link from a website nobody in your area has heard of.
What to focus on instead
Instead of asking “How do I increase my domain authority?”, ask:
“How do I make my website more useful, trustworthy and visible to the right people?”
Focus on:
- Clear service pages for each main service
- Local landing pages only where they are genuinely useful
- Helpful blog posts answering real customer questions
- Before and after photos
- Reviews and testimonials
- Case studies
- Accurate contact details
- A well-optimised Google Business Profile
- Links from relevant local and industry websites
- Strong internal linking between related pages
- A website that loads properly on mobile
- Tracking enquiries and traffic in Google Analytics
Google’s Search Essentials recommend creating helpful content, using the words people would search for, making links crawlable and telling people about your site in relevant communities (Google Search Central).
That is much more practical than chasing an abstract score.
How to increase domain authority
Increasing domain authority usually comes from improving the overall quality and trust of your website over time. The biggest factors are earning high-quality backlinks from relevant websites, publishing useful content that people genuinely want to read, improving your technical SEO, strengthening internal linking and building a stronger online presence. For local businesses and trades, this can include getting links from suppliers, local news websites, trade organisations, business directories and local partnerships. Better content, stronger service pages, positive reviews and more brand mentions can all contribute to the kinds of signals that authority tools like Moz, Ahrefs and Semrush measure.
Improving domain authority is also linked to better SEO overall. A website owner who invests in helpful content, relevant links, clear service pages and good user experience is more likely to improve their search engine rankings over time. That does not mean higher domain authority scores guarantee SEO success, but they can show that your SEO services, content marketing and link building are having a positive effect.
How long does it take to increase domain authority?
Increasing domain authority is normally a slow process rather than a quick win. For a newer or smaller website, noticeable improvements can take several months, especially if the site has very few backlinks, referring domains or useful content. A business consistently improving its website, adding helpful content and earning relevant links might start seeing movement within 3 to 6 months, while larger gains often take a year or more.
The speed depends on your competition, the quality of your SEO work and how established your website already is. A local trades business in a smaller town may improve much faster than a national company competing in a crowded industry.
Does DA matter in 2026?
Domain authority matters as a rough SEO benchmark.
It does not matter as a Google ranking factor.
For small businesses and trades, the score is worth checking occasionally, but it should not control your SEO strategy.
A better goal is this:
Create the most helpful, trustworthy and locally relevant website in your market.
Do that consistently, and the authority signals tend to follow.
Domain authority is not rubbish, but it is not magic either
Use it like a dashboard light, not like the engine.
It can help you understand your website’s strength compared with competitors, but it will not pay your bills, book jobs or make Google rank you on its own.
For trades and local businesses in 2026, useful content, local trust, strong service pages, good reviews and relevant links matter far more than obsessing over a DA score.
For national or international businesses, DA and similar authority scores can be more useful because the competition is usually stronger. But even then, the aim is not just to get a good domain authority score. The aim is to build a website that deserves trust, earns links naturally, answers search intent properly and gives people a good reason to choose your business.
Related post: If you are reviewing your wider SEO strategy, it is also worth looking at how your service pages, blog content, internal links and backlink profile work together to support long-term SEO success.
