How to Do Keyword Research in 20 Minutes or Less

Last updated: April 2026 · Written by 20 Minute Marketing · 9 min read

Effective keyword research doesn’t require expensive tools or hours of analysis. This 20-minute process uses free tools to identify the exact words your American customers type into Google, ranked by the ones most likely to produce enquiries for your specific business.

Most small business owners either skip keyword research entirely (optimizing for words nobody searches) or get lost in complex SEO tools with overwhelming data. This process strips it back to what actually matters: finding the specific phrases your customers use, understanding their intent, and prioritising the ones with the highest conversion potential.

The 3 Types of Keywords You Need

📘 Want the full picture? Read our the small business SEO blueprint — the complete pillar guide this article is part of.

For most American local service businesses, commercial keywords are the top priority for service pages and GBP, and informational keywords are best for blog content that attracts customers earlier in their decision process.

The 20-Minute Keyword Research Process

Minutes 0–5: Start With Your Customers’ Language

The most common keyword research mistake: optimizing for industry terminology rather than customer language. A plumber calls it “hot water system maintenance.” A customer searches “hot water not working.” Write down every way your customers might describe: your service (what it does, not what it is), their problem (what goes wrong), and their desired outcome (what they want fixed). This customer language list is your starting seed list.

Minutes 5–10: Use Google Autocomplete and People Also Ask

Type each seed keyword into Google Search and read every autocomplete suggestion that appears. Every suggestion is a real query that real customers type frequently enough for Google to suggest it. Screenshot or note down every relevant variation. Then search your main keyword and scroll to the “People also ask” box — these are related questions Google knows are commonly searched together. Each one is a potential blog post topic or FAQ section entry.

Minutes 10–15: Add Location Modifiers

For local service businesses, your most valuable keywords combine the service with a suburb or city. Take your top 5–10 service keywords and add your suburb, nearby suburbs, and the broader city or region. “Plumber Ringwood,” “plumber Croydon,” “plumber Maroondah,” “plumber Melbourne east.” These long-tail location keywords have lower competition than city-wide terms and higher conversion intent because they describe exactly what the customer needs and where.

Minutes 15–20: Validate With Google Search Console

If your site has been live for more than 3 months, Search Console is your most valuable free keyword tool. Go to Performance → Search results → Queries. This shows every keyword your site already appears for, with current position and click-through rate. Sort by Impressions to see which queries people are seeing your site for most often. Sort by Position and filter for positions 11–20 to find your striking-distance keywords — terms already ranking on page two that need only a small content improvement to reach page one.

How to Prioritise Your Keyword List

After 20 minutes you’ll have a list of 30–60 potential keywords. Prioritise using this two-factor test:

1. Commercial intent first — keywords where someone is ready to hire or buy get optimized in your service pages before informational keywords get blog posts
2. Specificity over volume — “emergency plumber Ringwood” (50 searches/month, low competition, high intent) is more valuable than “plumber” (5,000 searches/month, enormous competition, mixed intent). Win the specific, local terms first.

Frequently Asked Questions

Do I need a paid SEO tool like Ahrefs or SEMrush?

Not to get started. Google Autocomplete, People Also Ask, and Search Console are free and sufficient for most U.S. small businesses doing their own local SEO. Paid tools add value when: you want to analyze competitor keyword rankings, check backlink profiles, or track keyword positions at scale across hundreds of terms. For a single local business targeting 10–20 core keywords, the free tools are genuinely sufficient.

How often should I do keyword research?

A full keyword research session every 6 months plus a monthly 5-minute Search Console review is sufficient for most local businesses. Triggers for an unscheduled keyword review: you add a new service, you expand to a new area, you launch a new product, or you notice a significant traffic drop that might indicate you’re no longer ranking for a previously valuable keyword cluster.

Once you have your keyword list, see our SEO setup fundamentals guide to apply those keywords correctly across your title tags, headings, and content, and our post-publishing checklist to maximise each page’s ranking potential.