SEO Keyword Analysis: How to Find the Keywords Actually Worth Targeting

Key Takeaways

SEO keyword analysis is the process of evaluating search terms across four dimensions: search volume, keyword difficulty, search intent, and commercial relevance. Volume alone tells you almost nothing useful.
Search intent is the most important filter. A keyword with 50 monthly searches and strong transactional intent will outperform a keyword with 5,000 searches and vague informational intent every time for a service business.
Keyword difficulty is relative to your domain. A difficulty score of 35 might be realistic for a site with 30 referring domains and impossible for a brand-new site. Evaluate difficulty against your own authority, not in the abstract.
Competitor keyword analysis tells you which terms are already proven in your market and where the gaps are. It is one of the most reliable shortcuts in the entire research process.
Organising keywords into clusters before you start writing prevents cannibalisation, ensures your site has a clear structure, and makes your overall authority much easier for Google to understand.
The goal of keyword analysis is not to find the most popular terms. It is to find the specific terms where you can rank, where searchers are ready to take action, and where winning actually changes your revenue.

SEO keyword analysis is the process of evaluating search terms to decide which ones are worth targeting. A proper analysis covers four things: how many people search the term, how hard it is to rank for, what the searcher actually wants, and whether ranking for it would bring in people who become customers. Most businesses skip two of those four steps and wonder why their rankings do not translate into revenue.

The short version: volume is the least important of those four factors for most small and medium businesses. Intent and commercial relevance are where keyword analysis actually earns its keep.

What Keyword Analysis Is Actually Solving For

The goal is not to find keywords. Every business owner can type a few words into a search bar and get a list of related terms. The goal is to find the specific intersection of three things:

Terms searchers are using when they are ready to buy or enquire
Terms you can realistically rank for given your site’s current authority
Terms where ranking on the first page would meaningfully change your business

That intersection is almost always a smaller set of keywords than the initial research suggests. Narrowing down to it is what analysis does.

A plumbing company in Hamilton does not need to rank for “plumber.” That keyword is searched by people looking for job listings, people doing research, people curious about plumbing as a trade, and occasionally people who need a plumber right now. The business needs to rank for terms where the vast majority of searchers are ready to call, in its service area, for jobs it actually wants to take. Those are different keywords and they require different analysis to find.

The Four Dimensions of Keyword Analysis

1. Search Volume

Volume tells you how many people search a term in a given month. Most SEO tools report estimated monthly searches, averaged over 12 months in a specific geography.

The number matters, but it is not the primary filter. For a New Zealand service business, a keyword with 90 monthly searches in New Zealand is meaningful if those are 90 highly qualified searchers. A keyword with 3,000 monthly searches nationwide is worth far less if most of those searches come from outside your service area, from people who are not ready to buy, or from competitors researching the market.

Volume tells you the ceiling on opportunity. It does not tell you whether reaching that ceiling would actually benefit your business.

One practical caution: SEO tools round and group volume estimates, especially for lower-volume terms. A tool might show 90 monthly searches for a term that actually gets anywhere from 50 to 150 depending on the month. Treat volume figures as directional indicators, not precise targets.

2. Keyword Difficulty

Keyword difficulty (sometimes called SEO difficulty or competition score) is a measure of how hard it would be to rank on the first page of Google for a given term. Most tools express this as a score from 0 to 100. The number is calculated primarily from the backlink profiles of the pages currently ranking for that term.

The important thing about difficulty: it is relative. A difficulty score of 25 is not easy or hard in the abstract. It is easy or hard relative to your domain authority and your existing backlink profile.

A business with 200 referring domains from quality sites is in a fundamentally different position than a business with 12 referring domains. The same difficulty score on the same keyword means different things to each of them.

How to apply it practically: look at the actual pages ranking for a keyword, not just the score. Open the top five results in Ahrefs or Semrush. Check each one’s Domain Rating and the number of referring domains pointing to that specific page. If most of those pages have a Domain Rating 30 points higher than yours and dozens of unique links, that keyword is too competitive regardless of what the score says. If the pages ranking are from general directories, thin location pages, or sites with similar authority to yours, that keyword may be very winnable even with a higher difficulty score.

3. Search Intent

Intent is what the searcher actually wants to find. It is the most important dimension and the one most often skipped in basic keyword research.

There are four types of search intent:

Informational. The searcher wants to learn something. “How does SEO work,” “what causes blocked drains,” “what is keyword analysis.” These searches do not produce direct enquiries. They produce readers. Content targeting informational intent builds authority and captures people early in the buying process, but it rarely converts the same day.

Navigational. The searcher is looking for a specific website or brand. “Lucid Media SEO,” “IRD login,” “Trade Me property.” Unless your brand is the subject of the search, these offer limited opportunity.

Commercial investigation. The searcher is comparing options before making a decision. “Best web design agency Auckland,” “Ahrefs vs Semrush,” “top SEO tools NZ.” These searchers are warm but not yet ready to commit. Content that helps them decide, comparison guides, lists, reviews, performs well here.

Transactional. The searcher is ready to act. “SEO agency Hamilton,” “book plumber Wellington,” “web design quote Auckland.” These searches are the highest commercial value for most service businesses. Searchers here want to hire, buy, or book, not read an educational article.

When you analyse a keyword, check what Google currently ranks at the top and match the format. If the first page for a keyword is all listicles and how-to guides, Google has decided that keyword has informational intent. Trying to rank a service page for that term will be an uphill battle, and even if you manage it, the traffic will not convert at the rate you expect. Match the format to the intent.

4. Commercial Relevance

Not every keyword that is easy to rank and gets decent traffic is worth targeting. The final filter is whether ranking for the term would actually reach people who would become customers.

This is the step where keyword research gets specific to your business. A content marketing agency might rank easily for “what is a blog post.” The people searching that term are probably not potential clients. A high school student, a curious person, and a new blogger are all more likely searchers than a business owner who might spend $3,000 per month on content. That keyword is not commercially relevant to the agency, regardless of its volume or difficulty.

For each keyword you are evaluating, ask: if my ideal customer found this page, would they recognise themselves in the content and be willing to enquire? If the answer is no for most of them, that keyword is not commercially relevant.

The Analysis Process, Step by Step

Start With Your Services and Problems, Not Keywords

The most reliable way to build a keyword list is to start with what you actually offer and the problems your customers come to you with, then translate those into search queries.

List every service or product you offer. List the problems those services solve. List the questions you get asked on first calls and in enquiry emails. These are the raw materials of your keyword list, because they reflect the language your customers use before they have learned your industry terminology.

A landscaping company’s customers do not search “soft landscaping services.” They search “garden design Auckland,” “retaining wall ideas,” and “how to level a sloped section.” Start with how customers talk and work backwards.

Expand With a Tool

Once you have a seed list of 15 to 30 terms in customer language, put each one into a keyword research tool, Ahrefs, Semrush, or Google Keyword Planner all work for this, and expand it.

Pull related terms, questions, and longer-tail variations. Also look at what terms your competitors rank for that you do not. This is one of the most reliable ways to find keywords you would not have thought of yourself.

Export everything into a spreadsheet. At this stage you want breadth, not a filtered shortlist. You can filter later.

Filter by Intent

Go through your expanded list and classify each keyword by intent. Remove or deprioritise terms with purely informational intent unless your strategy explicitly includes content marketing as a traffic channel. Focus on transactional and commercial investigation keywords first.

This single step eliminates a large portion of most raw keyword lists and is one of the main things separating a strategy focused on revenue from one focused on traffic.

Check Difficulty Against Your Authority

Pull the current Domain Rating (Ahrefs) or Authority Score (Semrush) for your site. Then filter your keyword list against realistic difficulty thresholds.

A rough guide: if your Domain Rating is under 20, focus on keywords with a difficulty score under 20, and verify those rankings by looking at the actual pages. Between 20 and 40 DR, you can realistically target up to difficulty 30 to 35 while building authority. Above 40, you have more range, but difficulty should still be checked against real competition in each case.

This is not a hard ceiling. A highly relevant, well-executed page can outrank a more authoritative domain for a specific keyword, especially if the competing pages are thin or poorly matched to intent. Use difficulty as a starting filter, not a final verdict.

Estimate the Commercial Opportunity

Before committing to a keyword, run a quick opportunity estimate. Take the monthly search volume, apply a realistic click-through rate for the position you could reach, and multiply by your conversion rate from organic traffic to enquiry, then your close rate and average job value.

This arithmetic does not need to be precise. It needs to be directional. If ranking for a keyword gets your site 30 qualified visitors per month, converts at your average rate, and closes at your close rate, is it worth three months of effort? Sometimes the answer is clearly yes. Sometimes the answer reveals you are targeting a keyword that, even if you won it completely, would produce one additional customer per quarter. That knowledge changes how you prioritise.

Here is how it looks in practice. Say a keyword gets 90 searches a month in New Zealand, you estimate being in the top three would deliver 25 to 35 visitors per month to your page, your site converts organic visitors to enquiries at around 3%, and you close 40% of enquiries at an average job value of $4,000. That works out to roughly one closed job per month from this single keyword. Whether that justifies the ranking effort depends entirely on how competitive the term is and how many other keywords you are working on in parallel.

Group Into Clusters

Once you have a shortlisted set of keywords worth targeting, group them by topic and intent before you start creating content.

Keyword clustering is the process of grouping related keywords together so that one strong piece of content targets a primary keyword and its close variants, rather than creating multiple thin pages that compete against each other for the same searcher.

If you have keywords like “SEO keyword analysis,” “how to do keyword analysis,” “keyword analysis for SEO,” and “keyword research analysis,” those should be addressed in a single comprehensive piece, not four separate pages. Creating four pages fragments your authority, forces Google to choose between them, and often results in none of them ranking well.

A well-organised cluster structure, where a few strong pages cover the core topics in depth and supporting pages target specific angles or related subtopics, builds topical authority faster and makes your site’s structure easier for Google to understand.

Competitor Keyword Analysis

One of the fastest ways to do effective keyword analysis is to look at what already works for the competitors who are winning in your market.

Pull two to three of your direct competitors (businesses serving the same customers in the same geography) into Ahrefs or Semrush. Look at:

Their top organic pages by traffic
The keywords driving the most sessions to those pages
Keywords they rank for in positions 4 to 20, where you could potentially outperform them with better content
Keywords multiple competitors rank for but you do not appear for at all

This last point is particularly valuable. If two or three competitors are all getting organic traffic from a keyword and you are absent, that is confirmed demand with proven rankability. It is a much stronger signal than a keyword that looks good in theory but has never been tested in your market.

Competitor analysis also reveals the content formats that work in your niche. If the top-performing pages for your competitors are detailed service pages with case studies and FAQs, that tells you something about what Google rewards for transactional queries in your industry. If they are long informational guides, that is a different signal. Match the format before you try to compete.

Where to Start: The Two Priority Categories

With a properly analysed keyword list in hand, prioritise by opportunity rather than volume.

The most valuable starting targets are usually in one of two categories.

High commercial value, low to medium difficulty. These are keywords where the searcher is close to buying and you have a realistic path to ranking. This is your primary focus. If your analysis surfaces three keywords like this, start there before doing anything else.

Keywords you almost rank for already. Check Google Search Console for terms where you already appear in positions 6 to 20 with a reasonable impression count. A targeted content refresh or an improvement to the existing page often moves these into the top three much faster than creating new content for fresh keywords. The page already has some authority and indexing history. Your analysis tells you whether the keyword is actually worth pushing further, or whether it attracts the wrong kind of traffic.

Long-tail keywords deserve a place in your strategy from the start. Terms with 30 to 100 monthly searches that are highly specific and transactional are often the first rankings a business earns, and they compound over time. A page that earns one to three leads per month from a very specific query is worth more than a page that gets 500 informational visitors and no enquiries.

Common Mistakes in Keyword Analysis

Chasing volume over intent. The most common error. A keyword with 10,000 monthly searches and informational intent will rarely outperform a keyword with 200 monthly searches and transactional intent for a service business.

Ignoring local geography. For New Zealand businesses, nationwide volume figures for many keywords are misleading because the actual search demand is concentrated in one or two main centres. Pull location-specific data where possible, and understand that a keyword getting 300 searches per month in New Zealand might get 180 of those from Auckland. A service business based in Tauranga needs Tauranga-specific analysis, not a nationwide average.

Treating difficulty as an absolute barrier. Difficulty scores are averages across the competing pages. If those pages are weak, thin, or poorly matched to intent, your well-executed page can outrank them even with a nominally higher difficulty score.

Building a list and never returning to it. A keyword analysis done in January and never revisited is partially obsolete by June. New competitors appear. Google updates its understanding of intent for certain queries. Seasonal terms shift. A quarterly check against your actual ranking data in Search Console, cross-referenced with your analysis, keeps your strategy current.

Analysing keywords without checking what already ranks. Before targeting any keyword, open an incognito browser and search for it. Look at the first page. If it is dominated by Reddit threads, Wikipedia, and major news sites, that keyword is almost certainly out of reach for a service business regardless of the difficulty score. If it is populated by local businesses and service pages similar in size to yours, that is a very different story.

Frequently Asked Questions

What is SEO keyword analysis?

SEO keyword analysis is the process of evaluating search terms across multiple dimensions, including search volume, keyword difficulty, searcher intent, and commercial relevance, to decide which keywords are worth targeting with content or optimisation. It goes beyond a basic keyword list by identifying terms where you can realistically rank and where ranking would produce customers, not just traffic.

How do I do keyword analysis for SEO?

Start with a list of your services and the problems your customers describe. Expand that list using a keyword tool like Ahrefs, Semrush, or Google Keyword Planner. Filter by search intent, removing purely informational terms if your goal is leads or sales. Check keyword difficulty against your site’s current domain authority by looking at the actual pages ranking, not just the score. Estimate the commercial value of each keyword. Then group related keywords into clusters before creating or updating content.

What tools are best for keyword analysis?

Google Search Console is the starting point because it shows which terms your site already ranks for, which is often the fastest optimisation opportunity. For competitive research and new keyword discovery, Ahrefs and Semrush are the two dominant platforms. Google Keyword Planner provides volume estimates at no cost. See the full breakdown of SEO tools for a detailed comparison of what each one does well.

How do I choose between keywords with similar search volume?

Compare their intent and difficulty. Transactional keywords, where the searcher is ready to act, should take priority over informational ones at the same volume. Then check the actual pages ranking for each keyword: a keyword with 40 difficulty backed by weak, thin competitor pages is more winnable than a keyword with 30 difficulty backed by highly authoritative, dedicated resources. Finally, estimate the commercial value: which keyword, if you ranked in the top three, would produce more of the customers you actually want?

How often should I revisit keyword analysis?

A full analysis should be done at the start of any SEO campaign and updated every six months. A lighter review, checking which target keywords have moved in Google Search Console and whether any new competitor pages have appeared, is worth doing quarterly. Keyword data changes, competitor activity changes, and Google’s understanding of intent for specific queries shifts over time. The strategy that was current six months ago is not the same one you should be running today.

If you want to know which keywords are realistic opportunities for your site right now, and which ones you are currently almost ranking for, a short audit covers both. Get in touch with Lucid Media and we will look at your Search Console data and tell you exactly where to focus.