The full cost breakdown — no fluff

Website Builder vs Web Agency
The Full Cost Comparison

Agencies charge £2,000–15,000 upfront — then £100–500/month forever. Most small businesses are paying ten times more than they need to. Here's the honest breakdown.

£8,500
average agency build cost
£3,600
average annual ongoing fees
£29
ChilledSites per year
60s
to go live with AI

What agencies charge — and why

UK web agencies have real costs: senior developers, designers, project managers, and account managers all billing by the hour at £60–150/hr.

£2,000–5,000 build

Small brochure site

5–8 pages, basic design, minimal functionality. A freelancer-level build. Usually 2–4 weeks. Don't expect much customisation at this end of the market.

£5,000–15,000 build

Standard business site

Custom design, CMS integration, contact forms, SEO setup, maybe a blog. This is what most SMEs end up being quoted — and many are surprised by this number.

£15,000–50,000+ build

Complex or e-commerce

E-commerce, custom web apps, complex integrations, membership sites. This tier requires a full development team. Months of work, not weeks.

£150–500 /month

Monthly retainer (ongoing)

Even after launch, most agencies charge for hosting, maintenance, security updates, and CMS upgrades. Text changes or new pages are billed on top at their hourly rate.

£60–150 /hour

Ad-hoc changes

Need a new section? Update the team page? Change your pricing? Most agencies bill hourly for anything beyond basic content. Small changes can cost £150+ each.

£500–3,000 /year

SEO & marketing add-ons

Agencies often sell SEO packages on top of the site build. These range from basic technical SEO to full monthly campaigns — all billed separately.

The full cost of an agency website in 2025

The headline build price is just the start. Here's what a typical small business actually pays in year one.

Initial website build
Design + development + launch
£5,000–15,000
Hosting & infrastructure
Server, CDN, SSL, backups
£300–1,200/yr
Monthly maintenance retainer
Security patches, CMS updates, support
£1,800–6,000/yr
Ad-hoc content changes
New pages, copy updates, image swaps
£500–3,000/yr
Analytics & SEO tools
Third-party subscriptions sold separately
£200–1,200/yr
Total: Year One with an agency
Build + hosting + maintenance + changes + tools
£8,000–26,000

* Based on UK agency averages. Year two onwards: £2,800–10,200/yr with no build cost, but still paying for hosting, retainer, and changes.

What AI website builders actually cost

Builder pricing ranges from free (with restrictions) to £200+/year for premium plans. Here's where the main players sit.

Wix
£204
per year (Business plan)
  • Drag-and-drop editor
  • Custom domain
  • Manual design required
  • Wix branding on free plan
  • Limited AI features
Squarespace
£228
per year (Business plan)
  • Premium templates
  • Custom domain
  • Manual design only
  • Transaction fees on lower plans
  • No AI generation
WordPress + Hosting
£120–600
per year (varies widely)
  • Fully customisable
  • Requires technical knowledge
  • Plugin costs stack up
  • Maintenance is your problem
  • Security vulnerabilities
ChilledSites
£29
per year — everything included
  • AI generates your site in 60 seconds
  • Multi-page by default
  • Custom domain + hosting included
  • Analytics built in
  • AI editing — change by typing
  • Forms with email notifications
  • No upsells or add-ons

Agency vs Builder vs ChilledSites

Every major factor, compared honestly — including the things agencies don't advertise.

Web Agency Wix / Squarespace ChilledSites
Year 1 cost £8,000–26,000 £120–600 £29
Ongoing annual cost £2,800–10,200 £120–600 £29
Time to go live 4–12 weeks Days to weeks 60 seconds
AI generation Partial
Custom domain Extra cost Included
Hosting included Billed separately
Built-in analytics Basic only
Contact forms Extra or basic Basic (paid tiers) Included
Make changes yourself Pay agency per change Drag-and-drop Just type it
No design skills needed Partial

What you sacrifice with each option

Every option has real tradeoffs. Here's what nobody tells you before you sign the contract.

Web Agency
High cost. High dependency.
  • Fully custom design possible
  • Complex functionality available
  • Someone else handles technical issues
  • £8,000–26,000 in year one
  • Every change costs more money
  • 4–12 weeks to go live
  • Locked to your agency's availability
  • Ongoing retainer even when nothing changes
Wix / Squarespace
Affordable. But time-consuming.
  • Much cheaper than an agency
  • You control your own content
  • Lots of templates to start from
  • Hours of manual work to build
  • £120–600/yr — more than ChilledSites
  • Limited or no AI generation
  • Results depend on your design taste
  • You write all your own copy
ChilledSites
£29/year. AI does the work.
  • £29/year all-in — no surprises
  • Live in 60 seconds from a prompt
  • AI writes design, layout, and copy
  • Edit anything by typing plain English
  • Analytics, forms, hosting, domain — included
  • Not ideal for custom web applications
  • No e-commerce functionality (yet)
  • AI-generated — not fully bespoke

AI builder wins for 90% of small businesses

When to use an AI website builder

If you run a small business, freelance operation, restaurant, gym, salon, trades company, or any service business — you do not need a web agency. You need a professional website that looks great, loads fast, and converts visitors into enquiries.

ChilledSites does exactly that, in 60 seconds, for £29/year. The AI generates a complete multi-page site with copy written for your specific business. You can edit anything by typing plain English. No design skills, no dev knowledge, no monthly retainer.

When to use a web agency

Agencies make sense if you need custom software, complex integrations (CRM, ERP, booking systems), e-commerce at scale, or a genuinely unique brand experience that requires bespoke design. For most small businesses, that's simply not necessary.

£12,400
Average overspend per year Typical small business with agency vs ChilledSites
8–12 wks
Typical agency delivery time vs 60 seconds with ChilledSites AI
90%
Small businesses that don't need an agency Most only need a professional, well-designed website
Skip the agency. Build it yourself — in 60 seconds.

£29/year beats a
£12,000 agency quote.

Stop paying agency retainers for a website that could have been built by AI in a minute. ChilledSites gives you everything — custom domain, hosting, analytics, forms — for less than the cost of a single hour with an agency.

Build my site now — from £29/year

Everything you need to know

How much does a web agency charge in the UK?
UK web agencies typically charge £2,000–15,000 for a basic to mid-range business website build. Add hosting (£300–1,200/yr), a monthly maintenance retainer (£150–500/month), and ad-hoc change fees (£60–150/hr), and the first-year total for a small business website typically lands between £8,000 and £26,000.
Is an AI website builder as professional as an agency-built site?
For most small businesses, yes. ChilledSites generates polished, multi-page websites with professional copy, responsive layouts, and a custom domain in 60 seconds. Unless you need complex custom software or a genuinely bespoke brand identity, an AI-built site is indistinguishable from an agency site — and in many cases faster, cleaner, and better optimised for mobile.
What is the cheapest way to get a professional website?
ChilledSites is £29/year and includes everything: AI generation, custom domain, hosting, analytics, contact forms, and AI editing. That's cheaper than Wix, Squarespace, or WordPress — and a fraction of what any agency charges. You get a professional, multi-page website live in 60 seconds with no technical skills required.
Can I replace my existing agency-built site with ChilledSites?
In most cases, yes. Generate a new site from scratch in 60 seconds by describing your business. The AI builds a complete multi-page site — Home, About, Services, Contact and more — with copy tailored to your business. Most users find the result is on par with or better than their existing site, and they eliminate their ongoing agency retainer immediately.
Do I need technical skills to use ChilledSites?
None at all. If you can describe your business in a sentence, ChilledSites can build your website. The AI generates the design, layout, copy, and structure automatically. You can make changes by typing plain English — "make the hero text larger", "add a testimonials section", "change the colour scheme to navy". No code, no drag-and-drop complexity, no design decisions required.

Stop overpaying.
Start saving thousands.

You don't need a web agency. You need a professional website — and ChilledSites builds one in 60 seconds for £29/year, everything included.