Toilet problems usually come with clear signs. If the tank refills on its own when nobody's used it, water is slipping past the flapper. If it runs and runs after a flush, the fill valve isn't shutting off. If the bowl rocks, the bolts or the wax seal underneath have loosened, and water at the base means the seal has already failed or the supply line is leaking. The same handful of problems show up in Santee homes from Sky Ranch to Carlton Oaks.
Most of those are repairs. The parts inside a tank can be replaced one at a time, and a toilet in good shape can keep going for years with new parts. Replacement makes sense when the porcelain is cracked, when repairs keep stacking up, or when you want an upgrade. Newer toilets flush well on much less water, and a bidet seat can go in at the same time. The contractor looks at your toilet and tells you which way makes sense before any work starts.
If the toilet keeps backing up, the problem is usually in the drain line, not the toilet, and that's a drain cleaning job. Everything on the toilet itself, running, rocking, leaking, resetting and replacing, is performed by or under a licensed contractor, explained in plain English, and your call.