The verdict in three sentences
A B2B brochure-site redesign in London costs between £4,500 (visual refresh) and £9,000-£28,000 (full UX, build and SEO rebuild). The most underestimated line item is not the design but the build and SEO migration (301 redirects), which decides whether your traffic survives. Well-run projects deliver +18% to +35% qualified leads within six months: the return on investment is calculated, not hoped for.
What are you actually paying for?
A credible quote itemises every line. Here is the breakdown seen on the London market in 2026 for an 8-15 page brochure site.
| Line item | 2026 range (£) | What it covers |
|---|---|---|
| UX / UI design | 2,200 – 4,800 | Wireframes, mockups, design system |
| Build / development | 3,000 – 7,500 | Responsive front, CMS, forms |
| SEO copywriting | 1,100 | 8-12 optimised pages, markup |
| Migration + 301 redirects | 750 | Redirect map, sitemap, GSC |
| Hosting + domain | 200 – 500 / yr | Managed server, SSL, backups |
| Retainer (maintenance) | 150 – 300 / mo | Updates, security, fixes |
An SME aiming mid-market usually lands around £10,000-£14,000 for a durable site, excluding ad campaigns.
Refresh or rebuild: where is the line?
A refresh reworks the existing site; a rebuild reconstructs the structure. The choice hinges on technical debt and performance.
| Criterion | Refresh (£4,500) | Full rebuild (£9k-£28k) |
|---|---|---|
| Timeline | 2 – 3 weeks | 4 – 8 weeks |
| New site architecture | No | Yes |
| Target PageSpeed | +10-15 pts | 90+ mobile |
| Lead impact (6 mo) | +5% to +12% | +18% to +35% |
| Lifespan | 18 – 24 months | 4 – 5 years |
| SEO risk | Low | Controlled with clean 301s |
If your site is over four years old with poor Core Web Vitals and legacy architecture, a refresh only defers the bill.
Mini case study
Sarah, director of a 22-person industrial SME in Croydon, generated 14 quote requests a month from a 2019 WordPress site. She invests £10,200 in a full rebuild (UX £3,600, build £5,000, SEO £1,000, migration £600). Six months later, requests rise to 19 a month (+35%). With an average deal of £5,800 and a 22% close rate, the five extra monthly leads add roughly £6,380 in new revenue per month. The investment pays back in under eight weeks of sales output.
Need a professional website?
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FAQ
How long does a brochure-site redesign take?
Four to eight weeks for a full 8-15 page rebuild, depending on content readiness and revision cycles. A refresh wraps in two to three weeks.
Will I lose my Google rankings?
Not with a clean 301 redirect map. That is exactly the £750 line you must never cut: a botched migration can drop traffic 30-60% for months.
Do I really need a retainer?
Yes. Budget £150-£300/month for security updates, backups and small fixes. Without one, an unmaintained site becomes vulnerable within 6-12 months.
Can I stagger payment?
Most agencies offer 40% / 30% / 30% milestones (kickoff, design sign-off, go-live). It is standard on projects from £6,000 upward.
Is a template enough for an SME?
On a tight budget, a well-built template at £4,000-£6,000 does the job. Above that, custom work is justified by differentiation and conversion performance.
Let's scope your project. Tell us about your current site, your lead target and your indicative budget, and we will tell you within 48 h whether a refresh suffices or a rebuild is warranted. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
