The details.
What is the fastest way to tell if the site has a problem?
The five-second test. Show your homepage to someone who does not know your business for five seconds, then ask what you sell and what they should do next. If they cannot answer, neither can your customers.
Most small business sites fail this test, and the fix is usually the headline, not a rebuild.
How do I check the mobile experience?
Open the site on your own phone, on cellular data rather than wifi. Try three things: tap the phone number, fill in the form, and read the main page without zooming.
For local businesses, the phone is usually the main way people see the site. If any of those three actions is awkward, that is where the customers leak.
What does Google see?
Search your business name, then your service plus your town. If you cannot find yourself for your own name, something technical is wrong. If you appear for your name but not for what you sell, the site does not say it clearly enough.
Both are fixable. The first is usually an indexing problem, the second is words on the page.
Does speed actually matter?
Yes, mostly at the extremes. A page that loads in about two seconds feels instant. One that takes eight gets abandoned. Test yours with Google's free PageSpeed Insights and read the mobile score.
The usual culprits are oversized photos and page-builder bloat, and both can often be fixed without rebuilding the site.
When is it a fix and when is it a rebuild?
Fix when the bones are good: the site says what you do, works on phones and loads fast enough, but looks dated or reads poorly. Rebuild when the structure fights you: you cannot edit it, it is not mobile-friendly, or the platform holds it hostage.
A review of the current site always comes first. Sitewhip's Fix and Improve work starts at $295 after that review, and if the honest answer is rebuild, you hear that instead.