Rebuilding a website is expensive and disruptive, and it is not always the right answer. Work through this before committing.
Ownership
Who is the registrant of your domain? Not who manages it, but whose name and email are on the registration. If it is a former staff member or an agency you no longer work with, fix that before anything else. A domain you do not control is the single largest risk on this list.
Same question for hosting, DNS and the admin account of your site.
Security and currency
When was the platform last updated? A content management system two or three major versions behind is not merely dated. It is running publicly known vulnerabilities that automated scanners look for continuously.
When was the last backup taken, and has anyone ever restored one? A backup nobody has tested is a hypothesis.
What the content actually says
Read your own homepage as a stranger. Within ten seconds, can you tell what the business does, who it is for, and what to do next? Most ageing sites fail on the third question. There is plenty of description and no obvious next step.
Check the copyright year in the footer, the team page, the price list and the news section. A news section whose last post is from 2019 actively signals that the business may not still be operating.
Mobile and speed
Open the site on your own phone, on mobile data. Is text readable without pinching? Are buttons far enough apart to tap? Does anything overflow sideways?
Most Malaysian business traffic is on mobile. If the site was built before around 2015, it may well have been designed for desktop and adapted afterwards, which is visible.
Findability
Search Google for your business name. Do you appear first? Now search for the service you sell plus your town. If competitors appear and you do not, that is a content and technical problem, not necessarily a design one.
What the answers mean
If ownership is unclear or the platform is unpatched, act now regardless of anything else on this list.
If the structure and content are sound but it looks tired, a visual refresh plus a maintenance plan is far cheaper than a rebuild.
If you cannot update it yourself, the content no longer describes what you sell, and it fails on a phone, then that is a rebuild. The deciding factor is usually the first one: a site you cannot maintain will be out of date again within a year no matter how good it looks on launch day.