Common Website Design Mistakes That Cost Businesses Customers

Updated: 22 July 2026

Common website design mistakes include unclear navigation, weak mobile usability, poor readability, slow-loading pages, inaccessible controls, confusing calls to action, and technology choices that make a website hard to maintain. Most of these problems are invisible to the business owner because they’re used to their own site — but they’re the first thing a new visitor notices.

A website can look attractive and still fail its customers. It can be slow, confusing, inaccessible, hard to trust, or simply built for the wrong audience. Design mistakes rarely show up as a single dramatic failure — they show up as a slow drip of visitors who leave, enquiries that never arrive, and a website that quietly falls behind while it “still looks fine” to the people who built it.

Why Website Design Mistakes Matter

Design problems affect more than aesthetics. They influence whether a visitor trusts the business, whether they understand the offer, whether they can complete a task (call, book, buy, enquire), and whether people with disabilities can use the site at all. Poor technical choices also affect ongoing maintenance cost, search visibility, and how efficiently paid advertising performs once traffic lands on the page.

Fixing these mistakes won’t automatically guarantee more sales, higher rankings, or more leads — plenty of other factors (market, offer, competition, advertising spend) matter too. But an unclear, slow, or inaccessible website makes every other marketing effort work harder than it needs to.

Start With the Target Audience, Not Personal Taste

The single biggest design mistake happens before any screen is designed: building the site around what the owner personally likes, rather than what the actual customer needs. A tradesperson’s customer searching in an emergency has very different needs from a B2B buyer doing weeks of research. Age, device habits, accessibility needs, and whether the audience is local or national should all shape layout and content decisions.

Before any colour or layout choice, it helps to write down: who is the main customer, what are they trying to do, are they mostly on a phone, are they comparing options or ready to buy right now? A Brisbane tiler’s customer wants a phone number and photos of similar jobs, fast. A national B2B software buyer wants case studies and a demo booking form. Neither is “more correct” — they’re just different audiences, and design-by-committee (everyone in the business adding a personal preference) is one of the most common ways a site drifts away from what the customer actually needs.

Mistake 1 — Creating an Unclear First Impression

Within a few seconds, a visitor should understand who the business serves, what it offers, and what to do next. Vague slogans, generic stock hero imagery, and busy animation all get in the way of that.

DIY check: Show your homepage to someone unfamiliar with the business for five seconds, then hide it and ask them what the business does and what they’d click next. If they can’t answer both, the first impression needs work.

Mistake 2 — Confusing Navigation and Structure

Unclear menu labels, too many top-level items, important pages buried several clicks deep, duplicate pages, and inconsistent mobile menus all make a site harder to use. Good navigation is really just information architecture — organising content the way a customer thinks about it, not the way the business is internally structured.

Mistake 3 — Treating Mobile as an Afterthought

Most visits now happen on a phone, so a site designed on a desktop screen and only “checked” on mobile afterwards tends to have small tap targets, obstructive pop-ups, awkward tables, and forms that are painful to fill in with a thumb. Genuine responsive design — tested on real devices, not just a browser resize — and fast-loading pages on mobile networks both matter more than desktop polish.

Mistake 4 — Choosing Colours Without Considering Brand, Meaning or Accessibility

There’s no universal “best” website colour, and no colour that reliably increases sales on its own. What does matter is consistency with the brand, enough contrast between text and background to be readable, and not using colour alone to communicate status (for example, showing an error only in red text, with no icon or wording). Current WCAG guidance sets specific minimum contrast ratios for exactly this reason. Dark mode can work well, but only when it’s properly implemented rather than a simple colour inversion.

Mistake 5 — Typography That’s Difficult to Read

Small body text, cramped line height, long unbroken lines of text, all-capitals paragraphs, decorative fonts used for body copy, and text placed over busy images all reduce readability. A clear heading hierarchy (one H1, logically nested H2s and H3s) helps both readers and search engines understand the page. Users should also be able to zoom the page without the layout breaking.

Mistake 6 — Weak Visual Hierarchy and Crowded Layouts

Good spacing and grouping help visitors scan a page rather than read every word. Crowded layouts, competing calls to action, and unnecessary decorative elements all work against this. “Minimal” design doesn’t mean removing content the customer actually needs — it means removing what’s not helping them.

Mistake 7 — Generic, Misleading or Low-Quality Images

Real photos of the actual business, team, and completed work build more trust than generic stock imagery — and Australian visitors tend to notice when a “local” business is using obviously overseas stock photography. Images should be compressed and sized responsively so they don’t slow the page down, and every meaningful image needs descriptive alt text. AI-assisted imagery can be used responsibly for things like background textures or illustrations, but shouldn’t be used to present invented projects, staff, premises, or customer outcomes as if they’re real.

Mistake 8 — Slow Pages and Unnecessary Website Weight

Oversized images, excessive third-party scripts and trackers, autoplay video backgrounds, too many fonts, and heavy plugin stacks all add up. Performance depends on the whole delivery chain — image handling, code, hosting, and how many external scripts the page loads — not hosting speed alone. Google’s Core Web Vitals (loading, interactivity and visual stability metrics) are a useful, free way to check this via PageSpeed Insights, though a good score doesn’t guarantee rankings on its own.

Mistake 9 — Ignoring Accessibility

Accessibility means the site can be used with a keyboard alone, that focus is visible when tabbing through links and buttons, that forms have proper labels and clear error messages, that images have alt text, and that colour contrast meets recognised standards. WCAG 2.2, published by the W3C, is the current international benchmark most accessibility laws reference; the next major version (WCAG 3.0) is still in early draft and not expected to replace it for several years. Accessibility isn’t something a plugin or overlay widget can fully deliver on its own — it needs to be built into the page structure and content. This is a general information section, not legal advice; if accessibility compliance is a legal concern for your business, get advice from a qualified professional.

Mistake 10 — Weak or Confusing Calls to Action

A call to action should match where the visitor is in their decision — “Get a quote,” “Call now,” “Book a time,” or “Learn more” all suit different stages. Problems arise from vague button labels (“Submit,” “Click here”), too many competing buttons on one screen, artificial urgency (“Only 2 spots left!” with no real basis), and forms that give no confirmation once submitted.

Mistake 11 — Forms That Ask for Too Much

Every extra field reduces the number of people who finish a form. Ask only for what’s genuinely needed at that stage, label fields clearly, and give a clear confirmation message once submitted. Australian businesses collecting personal information should also be aware of privacy obligations under Australian law — the Office of the Australian Information Commissioner is the authoritative source here, and this article isn’t a substitute for that guidance.

Mistake 12 — Thin, Generic or AI-Generated Content

Content copied from competitors, mass-produced suburb pages with near-identical wording, or AI-generated text published without review or fact-checking all tend to read as generic and can misrepresent the business. AI assistance itself isn’t the problem — unreviewed, inaccurate, or repetitive content is. Genuine service details, real answers to real customer questions, and accurate claims all matter more than volume.

Mistake 13 — Pages Without a Clear Search Intent

Every page should have one main job — a service page sells a service, a guide answers a question, a location page targets a specific area. Multiple pages competing for the same search term (keyword cannibalisation) confuses both visitors and search engines. This is a deep topic in its own right — for more detail on building stronger SEO foundations, see our SEO service page.

Mistake 14 — Selecting the Wrong CMS

A content management system (CMS) is the software used to add and edit pages. WordPress, Shopify, Squarespace, Wix, Webflow, and fully custom-built systems all handle editing, ownership, plugin dependency, ecommerce, and ongoing maintenance differently. No platform is universally best — the right choice depends on the business’s technical comfort, budget, ecommerce needs, and how much long-term flexibility matters. Always confirm current platform features from official documentation before relying on them, since platforms update frequently.

Mistake 15 — Choosing Hosting Only by Price

Cheap hosting isn’t automatically bad, and expensive hosting isn’t automatically better — but hosting chosen on price alone, with no attention to uptime reporting, backups, support, or renewal costs after an introductory period, often causes problems later. It’s also worth understanding the difference between a domain registrar (where you register your domain name), DNS (which points your domain to your website), your website host (where the site files live), your email host (which may or may not be the same company), your CMS, and any CDN (content delivery network) — these are often assumed to be one thing, and confusion between them is a common cause of access problems during a provider handover.

Mistake 16 — Installing Too Many Plugins, Apps and Tracking Scripts

Plugins and page builders aren’t inherently bad, but an unmanaged stack of them creates conflicts, security exposure, ongoing subscription costs, and slower pages — particularly when old or abandoned plugins are never removed. Duplicate analytics tools and untracked changes after updates are common, quietly compounding problems.

Mistake 17 — Failing to Establish Ownership and Access

Domain registration, hosting, CMS administrator access, analytics, Search Console, Google Business Profile, and advertising accounts should all be documented and owned by the business — not left solely in a provider’s personal account. This is a large enough topic that we’ve written a dedicated guide to protecting website ownership and administrator access, covering the real risks of losing control of a website.

Mistake 18 — Launching Without Proper Testing

Before launch, test on real mobile devices and current browsers, submit every form, call every phone link, check the 404 page, confirm analytics and conversion tracking are firing, and check that no “noindex” or password restriction from the staging site has accidentally carried over to the live site — a surprisingly common launch mistake.

Mistake 19 — Forgetting Trust and Conversion Information

Genuine contact details, real service areas, an ABN where appropriate, clear pricing guidance (even a starting range), honest policies, and real project examples all build trust. Fabricated reviews, invented staff, made-up awards, or unverifiable credentials do the opposite once discovered — and can create legal risk.

Mistake 20 — Treating Launch as the End of the Project

A website needs ongoing software updates, security monitoring, backups, form testing, and content maintenance. Outdated products, expired offers, and old staff details left on a live site are small signals that undermine trust. (For more detail on why ongoing maintenance matters, see our dedicated maintenance article.)

Mistake 21 — Following Trends Without a Business Reason

Scroll-hijacking, autoplay video, oversized hero sections, novelty cursors, unnecessary 3D effects, dark patterns, and AI chat widgets bolted on without a real customer need all tend to slow a site down or confuse visitors rather than help them. Good modern design should make a customer’s task easier — not simply look current.

Website Design in 2026 — and Preparing for 2027

Confirmed for 2026: mobile-first customer journeys, accessibility built in from the start (WCAG 2.2 remains the practical standard), clear information architecture, lighter and faster pages, authentic imagery and content, privacy-aware data collection, documented account ownership, and AI-assisted content and design that’s reviewed by a human before publishing.

Preparing cautiously for 2027: rather than predicting specific new standards, the safer approach is building in flexibility now — adaptable, component-based design systems; content structured so it can be reused across formats; documented ownership of every account and asset; and reduced dependency on any single platform or plugin. None of this means traditional websites, SEO, or established CMS platforms are becoming obsolete — it means building on foundations that are easier to adapt as tools change.

DIY Versus Professional Website Design

None of these options is universally “better” — a $500 DIY site can suit a genuinely simple business, and an expensive custom build can be the wrong fit for a simple one. The real comparison is project scope, design and UX skill, content and photography quality, accessibility, SEO foundations, tracking, ownership, and ongoing support — not price alone.

What a capable owner can reasonably do themselves: clarify the core offer, organise basic pages, write genuine content, take original photos, test the mobile layout, check every contact link works, compress images, fix obviously broken links, and keep business information current.

When professional help is usually worthwhile: a full redesign or platform migration, custom functionality or integrations, ecommerce, unexplained performance problems, a security compromise, complex forms, broken tracking, poor search visibility despite genuine effort, or simply not having the time to maintain it properly.

The Australian Website Market in 2026

Australian small businesses generally choose between DIY subscription platforms, freelancers, small agencies, and custom development, with hosting and maintenance often sold separately from the initial build.

Indicative pricing varies enormously by scope, and any figures quoted publicly should be treated as a starting guide rather than a quote: a basic DIY subscription site might run from roughly $15–$50 AUD per month in platform fees alone, while a professionally designed small-business website (excluding ongoing hosting/maintenance) commonly ranges from the low thousands upward, and ecommerce or highly custom builds cost more again. These figures are general and were framed with July 2026 in mind; GST treatment, what’s included (content, photography, ecommerce setup, ongoing support) and whether pricing is one-off or recurring all vary between providers, so always confirm current, provider-specific pricing directly.

A 15-Minute Website Design Check for Business Owners

1. Open the homepage on a phone.
2. Ask whether the offer is clear within a few seconds.
3. Check the main navigation makes sense.
4. Test the primary call-to-action button.
5. Submit every important form.
6. Call every phone number link shown on the site.
7. Check text readability and contrast.
8. Try navigating using only the keyboard (Tab key).
9. Zoom the page to 200% and check nothing breaks.
10. Review image quality and relevance.
11. Check loading performance with a free tool such as Google PageSpeed Insights.
12. Review your most important pages for accuracy.
13. Confirm business details (phone, address, hours) are current.
14. Confirm who has domain and hosting ownership.
15. Check that analytics and a recent backup both exist.

This quick check is a useful starting point — it isn’t a substitute for a full professional technical or accessibility audit if problems show up.

Printable Checklist

• Target audience is clearly defined
• Main offer is immediately understandable
• Primary action is clear
• Navigation uses familiar labels
• Mobile layout has been tested on real devices
• Text is readable
• Colour contrast has been checked
• Colour is not the only way information is communicated
• Keyboard navigation works
• Visible focus indicators are present
• Images are relevant and optimised
• Forms are short and tested
• Error messages are helpful
• Important pages have one clear purpose
• CMS suits the business
• Hosting and renewal costs are understood
• Domain ownership is confirmed
• Website administrator access is confirmed
• Analytics and conversion tracking work
• Backup and recovery have been tested
• Software is kept up to date
• Website claims are accurate
• Genuine trust information is visible
• Privacy information is current
• Website has been tested before launch
• Performance is monitored after launch

Frequently Asked Questions

What are the most common website design mistakes? Unclear navigation, poor mobile usability, weak readability, slow-loading pages, missing accessibility features, and confusing calls to action are among the most common — see the 21 covered above for the full list.

How can I tell whether my website design is outdated? Run the 15-minute check above. Slow load times, a poor mobile experience, an unclear primary offer, or content that hasn’t changed in years are all practical signs, more useful than judging by visual style alone.

Can poor website design affect SEO? Indirectly, yes — slow pages, poor mobile usability, and unclear page structure can all make a site harder for search engines to understand and for visitors to use, which affects visibility. Design alone doesn’t guarantee rankings either way.

Which colours are best for a business website? There’s no universal best colour. What matters is brand consistency, sufficient contrast for readability, and not relying on colour alone to convey information.

Is WordPress the best CMS for every business? No single CMS suits every business. WordPress is flexible and widely supported, but the right choice depends on technical comfort, ecommerce needs, and long-term maintenance plans.

Is cheap web hosting bad for a website? Not automatically — but hosting chosen on price alone, without checking uptime, backups, and support, can cause problems later. Price and quality aren’t automatically linked either way.

Can I design my business website myself? Yes, for simpler requirements, particularly with today’s DIY builders. More complex functionality, ecommerce, or accessibility needs are often where professional help becomes worthwhile.

When should a business hire a professional website designer? Typically for a full redesign, custom functionality, ecommerce, unexplained performance or security issues, or when there simply isn’t time to maintain the site properly.

How often should a business website be redesigned? There’s no fixed rule — it depends on how well the current site still serves visitors. A regular review (annually, at minimum) against the checklist above is a more useful guide than a fixed timeframe.

What website features will matter during 2026 and 2027? Confirmed 2026 priorities include mobile-first design, built-in accessibility, faster pages, and authentic content. For 2027, building adaptable, well-documented, less platform-dependent foundations is a sensible precaution — without assuming any specific new standard is coming.

If your website looks dated, performs poorly, or makes it difficult for customers to take the next step, Tharlizwa Media can review the main problems and recommend practical priorities for improving it — get in touch to talk through what’s going on with yours.

Editorial note: This guide draws on current W3C accessibility guidance, Google’s official Search Central and web.dev documentation, and general Australian small-business context. Pricing figures are indicative only and should be confirmed directly with providers. This article does not constitute legal advice on accessibility or privacy compliance — for that, consult a qualified professional.