For UK small businesses that need to rank on Google, custom web design consistently outperforms Squarespace - particularly on page speed (90+ vs 40-60 out of 100), schema markup, and local SEO. Squarespace is a sensible choice for portfolios, test sites, and temporary pages where search visibility is not the goal. This comparison covers the specific points where the gap becomes significant.
Every week I speak to UK small business owners who built their site on Squarespace or Wix a few years ago. The site looks reasonable. But it's not ranking. And they're not sure why.
Here's an honest breakdown of when DIY website builders are a sensible choice - and when they're actively costing you business.
What Squarespace and Wix do well
They're not bad tools. For specific situations, they're the right choice:
- You need something up immediately (an event page, a temporary landing page, a personal portfolio)
- You're testing a business idea and need a web presence before committing to a proper build
- You have no recurring customers or enquiries coming from search - you get clients entirely through referrals or direct social media
For these situations: use Squarespace. It's fast to set up, looks fine, and the monthly cost is low.
Where Squarespace and Wix have a ceiling
If you want your website to bring in new clients from Google, you will hit a ceiling with these platforms. Here's why:
Page speed
Squarespace and Wix sites are notoriously slow. Google has explicitly said that page speed is a ranking factor. When PageSpeed Insights scores a Squarespace site, it routinely scores in the 40-60 range (out of 100) on mobile. A custom-built Next.js site typically scores 90+.
Slow sites rank lower and convert worse. A visitor who waits more than 3 seconds for your site to load is statistically likely to leave.
Schema markup and structured data
Schema markup is code that tells Google explicitly what your business is, where it's located, what your prices are, and what your reviews say. It's one of the most reliable ways to get rich results in search (star ratings, FAQ dropdowns, business information panels).
Squarespace and Wix have extremely limited schema support. You can't add custom JSON-LD. You can't properly implement LocalBusiness, FAQ, Service, or Review schema. This puts a hard ceiling on your local SEO.
Customisation limits
Templates are built to look reasonable for any business. A custom site is built to convert your specific customers. The difference shows in enquiry rates.
If your site visitors need to see certain trust signals, certain service descriptions, or a specific flow to feel confident enough to contact you - a template often can't deliver that without significant workarounds.
Hosting and performance
Squarespace and Wix host your site on shared infrastructure. You have no control over server location, edge caching, or infrastructure performance. A custom site can be hosted on fast, geographically appropriate infrastructure with edge caching configured for your audience.
The subscription alternative
One of the main arguments for Squarespace is cost: no large upfront build fee, just a manageable monthly payment.
This is a valid argument. A £3,000-£8,000 custom website build is out of reach for many small businesses.
But there's a third option: web design subscription. At Octelis, we build fully custom websites - Next.js, proper schema markup, 90+ PageSpeed scores - for £80/month. No upfront fee. The economics of Squarespace with the performance of a custom site.
The honest comparison
| Squarespace / Wix | Custom (one-off) | Custom (subscription) | |
|---|---|---|---|
| Upfront cost | £0 | £2,000-£8,000 | £0 |
| Monthly cost | £13-£40 | Hosting + extras | From £80 |
| Page speed | 40-60/100 | 85-95/100 | 85-95/100 |
| Schema markup | Very limited | Full control | Full control |
| Customisation | Template-limited | Unlimited | Unlimited |
| Ranking potential | Low-medium | High | High |
When to move from Squarespace to a custom site
The moment your website needs to do more than exist. If you're:
- Losing enquiries to competitors who rank above you
- Getting traffic but low conversion
- Running Google Ads and finding your Quality Score is penalised by slow load speed
- In a competitive local market where ranking matters
...it's worth moving to a custom site.
If you're curious whether a switch would make a difference for your specific business, get in touch. We'll audit your current site and give you an honest answer - no pitch, no pressure.
Frequently asked questions
Is Squarespace good for SEO for UK small businesses?
Squarespace provides basic SEO features but has significant limitations. It scores 40-60/100 on Google PageSpeed Insights on mobile, has very limited schema markup support, and lacks control over advanced technical SEO. For businesses that need to rank on Google to win clients, custom web design consistently outperforms Squarespace on search visibility.
When should a UK small business switch from Squarespace to a custom website?
Switch when: your site isn't appearing in Google for your services, you're losing enquiries to competitors who rank above you, you're running Google Ads and your Quality Score is being penalised by slow load speeds, or you're in a competitive local market where ranking matters.
How does Squarespace page speed compare to a custom website?
Squarespace sites typically score 40-60/100 on Google PageSpeed Insights on mobile. A custom-built Next.js site typically scores 90+/100. Page speed is a confirmed Google ranking factor, and slow sites convert worse - visitors who wait more than 3 seconds are statistically likely to leave.
What is the cost difference between Squarespace and a custom website in the UK?
Squarespace costs £13-£40/month. A custom website costs either £2,000-£8,000 upfront, or from £80/month on a subscription with no upfront cost. Over two years, a subscription custom site at £80/month costs about the same as a mid-range Squarespace plan - but with significantly better SEO performance.
What can a custom website do that Squarespace cannot?
Custom websites can implement full schema markup (LocalBusiness, FAQPage, Review, HowTo), achieve 90+ PageSpeed scores, use custom hosting infrastructure, build bespoke conversion flows, and give complete control over technical SEO. Squarespace has hard ceilings on all of these.
