Before you buy, or before you worry
A look at what's actually happening, and a straight answer about whether it needs work.
Most people call about a foundation because they saw something and don't know whether it matters. That's a reasonable reason to call, and often the answer is that it doesn't matter much.
An inspection is worth doing when you're buying a house, when something has changed recently, or when you've been told you need major work and want a second opinion before committing to it.
The cracks themselves, inside and out. Width, direction, whether they run through block joints or across them, and whether the two sides have moved relative to each other.
The house as a system. Door and window operation, floor level, trim gaps, and tile patterns often say more about foundation movement than the foundation does.
The outside. Grading, downspout discharge, irrigation heads near the slab, and standing water after rain. A large share of foundation problems in Florida are drainage problems that were left alone.

More often than not, the answer is that the crack is old, it hasn't moved, and it needs sealing at most.
That isn't a disappointing result. Knowing that a thing you've been worried about isn't a problem is worth the phone call, and it's a perfectly normal way for one of these to end.
It usually takes a couple of minutes on the phone to work out whether this is something that needs attention now or something to keep an eye on.
Serving Melbourne and Brevard County.