What changes over decades
Electrical expectations change over time: service capacity, the number of circuits, receptacle placement, grounding and protective devices. A property built for a very different set of appliances may not match how it will be used now.
What to look at
The panel and service size, the condition and type of wiring, grounding, the number of available circuits, and any evidence of previous non-professional work are all worth a closer look.
Plan in stages
Not everything has to happen at once. A professional evaluation can help you separate items that should be addressed now from work that can be planned alongside future renovations.