Don't have a pool*
Don't have more than 2 dogs (though multiple cats are okay, not like 10, but 2-3 seems reasonable)*
If the previous owners were 'fixer-uppers' double check EVERYTHING they did, because in our case a lot of the stuff they "fixed" was done poorly and we've had to redo
If you are on a well, have it tested for sodium chlorides. that's the analyte from road salt and it will ruin your plumbing and fixtures in the house, it is not a normal analyte they check when doing water tests, has to be requested
*pool is a money and time suck, more than 2 dogs is too many unless you enjoy constantly having a dog under your feet, hair everywhere and now that we have a senior dog, accidents all the time.