A website isn't a one-off purchase like a piece of furniture. It's more like a vehicle: you buy it once, then it needs fuel, servicing and the occasional repair to keep running safely. Skip the servicing and it'll let you down at the worst possible moment.
Yet website maintenance is the line item most UK businesses forget to budget for. They pay for the build, celebrate the launch, then are surprised a year later when things start to creak. This guide sets out a realistic website maintenance cost for different types of site, what that money actually buys, whether to do it yourself or use an agency, and what neglect really costs.
What "maintenance" actually covers
"Maintenance" is a vague word hiding several different jobs. Here's what's genuinely involved in keeping a business website healthy.
Hosting
Where your site lives. Cheap shared hosting can be a few pounds a month; decent business-grade hosting with good performance and support runs from roughly £10 to £50+ a month depending on traffic and requirements. E-commerce and higher-traffic sites need more robust hosting and cost more.
Domain name
Your web address. Typically £10–£40 a year for a .co.uk or .com. Small, but keep it renewed — letting a domain lapse is a genuinely serious mistake.
Software updates
The core platform, themes and plugins (on WordPress) or dependencies (on custom builds) need regular updating for security and compatibility. On WordPress this is ongoing and important; skipping it is how sites get hacked or break.
Security
SSL certificates (often included with hosting now), firewalls, malware scanning and monitoring. On a busy or e-commerce site, security is not optional.
Backups
Regular, tested, off-site backups so that if the worst happens you can restore quickly. A backup you've never tested isn't really a backup.
Support and fixes
The inevitable "can you change this", "something's broken", and "we need to add a page" jobs. This is where a lot of the real value of a retainer sits.
Content updates
Keeping information current — new services, staff changes, prices, blog posts, seasonal updates. A stale site slowly loses trust and rankings.
Ongoing SEO
Search doesn't stand still. Competitors move, Google updates, and a site left untouched tends to slide. Ongoing SEO — content, technical health, links — protects and grows your visibility, though it's often budgeted separately from core maintenance.
Realistic annual budgets by site type
These are honest UK ballpark figures for 2026. Your mileage will vary with traffic, complexity and how much support you use, but they'll keep you from being blindsided.
Simple brochure site (5–10 pages, static)
The essentials — hosting, domain, occasional updates and basic security — can be covered for roughly £300–£800 a year if the site is simple and rarely changes. If you want an agency handling everything hands-off, budget more.
WordPress business site
WordPress needs more attention because of the update cycle. A managed maintenance plan covering hosting, updates, security, backups and a set amount of support time typically runs £600–£2,000 a year, depending on how much support and content work you need. This is the sweet spot where a retainer usually earns its keep.
E-commerce site
Online shops are business-critical and complex — payments, stock, integrations, more updates, more security exposure, more that can go wrong and directly cost sales when it does. Realistic maintenance runs £1,500–£6,000+ a year, more for larger stores with heavy traffic and integrations. Downtime here has an immediate price, so this isn't a place to cut corners.
Custom-built site or application
Custom sites usually have lower third-party update overhead but need a developer who knows the codebase. Budgets vary widely with complexity, commonly £1,000–£5,000+ a year, and more for anything behaving like a web application.
A sensible rule of thumb many businesses use: budget somewhere around 10–20% of your original build cost per year for maintenance. A £3,000 site might sit at the lower end; a complex e-commerce build will need proportionally more attention.
DIY vs agency retainer
There are two honest ways to handle maintenance, and the right one depends on your time, skills and how much the site matters.
Doing it yourself
If you're technically comfortable, you can handle basics: running updates, checking backups, making content changes. Your out-of-pocket cost is mainly hosting and domain, plus your time.
The catch is that "your time" isn't free, and the risk is real. Updates occasionally break things. Security requires knowing what to watch for. A backup you've never restored may not work when you need it. For a simple, low-stakes site, DIY is reasonable. For anything your business depends on, it's a gamble against your own availability and expertise — and problems always seem to land while you're on holiday.
An agency retainer
A monthly retainer means someone else handles hosting, updates, security, backups, monitoring and a set amount of support, usually for a predictable monthly fee. You trade a bit of cost for time back and peace of mind, and you've got someone to call when something breaks.
The value isn't just the tasks — it's that a professional catches problems before they become emergencies. A monitored site with tested backups and prompt updates rarely has the catastrophic, expensive failures that neglected sites suffer. Look for retainers with clear inclusions, defined support hours and a sensible response time, and be wary of anything that locks you into a long contract.
The cost of NOT maintaining
This is the part businesses underestimate, so let's be blunt about what neglect costs.
Security breaches
A hacked website can be defaced, used to send spam, injected with malware that harms your visitors, or taken offline entirely. Cleaning up after a serious hack routinely costs more than years of maintenance would have — often several hundred to several thousand pounds — plus the reputational damage and the time. Outdated software is the single most common way small business sites get compromised.
Downtime
If your site goes down and nobody's watching, it can stay down for days. For an e-commerce site, that's lost sales you never recover. For any business, it's lost enquiries and a dent in trust — a prospect who finds your site broken rarely comes back for a second try.
Slow decline in rankings and trust
Neglect rarely causes one dramatic failure. More often it's a slow slide: the site gets slower, content goes stale, small errors accumulate, security warnings appear, rankings drift down. By the time it's obvious, you've quietly lost months of business, and recovering costs more than prevention would have.
Data loss
Without working backups, a server failure, a botched update or a hack can wipe your site with no way back. Rebuilding from scratch is expensive and, for the content and history you've lost, sometimes impossible.
The pattern is consistent: maintenance is a modest, predictable cost that prevents large, unpredictable ones. Skipping it doesn't save money — it defers a bigger bill and adds risk.
A quick worked example
Say you paid £4,000 for a WordPress business site two years ago and, to save money, skipped any maintenance plan. For 24 months nothing visible went wrong, so it felt like a smart saving of perhaps £1,200. Then a known vulnerability in an out-of-date plugin lets an attacker inject spam pages across the site. Google flags it, your rankings drop, and the site starts showing a security warning to visitors. You now pay a developer to clean the infection, restore from a backup you hope still works, harden the site and submit it back to Google for review — realistically several hundred to a couple of thousand pounds, plus a few weeks of lost enquiries and dented trust while rankings recover.
Set against that, an ongoing maintenance budget of a few hundred to a couple of thousand pounds a year looks less like a cost and more like cheap insurance. The point isn't that disaster is certain — plenty of neglected sites limp along for years. It's that the downside is large and unpredictable, and the protection is small and predictable. That's exactly the sort of trade where paying the modest, regular amount is the sensible business decision.
Where NetTrackers fits
We build sites that are fast, secure and SEO-ready from the first line of code, and we can keep them that way. Our web design and development service includes sensible, transparent maintenance options — hosting, updates, security, backups and support — so your site stays healthy without you having to think about it. If search visibility is part of what you want to protect and grow, our SEO service works from the same strategy rather than being bolted on. And because we're month-to-month with no long contracts, you stay because the work is worth it.
Want to know what your site actually needs — and what it should cost? Book a free strategy call or run our free SEO audit to see where you stand.
Frequently asked questions
Is website maintenance really necessary?
For anything your business relies on, yes. Software needs updating for security, backups need running and testing, and content needs keeping current. A truly static, low-stakes site needs less, but "no maintenance" always ends up costing more eventually.
What's included in a typical maintenance retainer?
Usually hosting, software updates, security monitoring, regular backups, uptime monitoring and a set amount of support time for changes and fixes. Content and SEO work are sometimes included and sometimes billed separately — always check.
Can I just do maintenance myself?
You can handle the basics if you're technically confident and the site is simple. The risks are broken updates, security gaps and untested backups. For business-critical or e-commerce sites, professional maintenance is usually worth it.
How much should I budget as a percentage of the build?
A common rule of thumb is around 10–20% of the original build cost per year, higher for complex or e-commerce sites. Treat it as an ongoing operating cost, not an optional extra.