The number one tool you should always have: a hammer
Next up, it is good to have a cordless drill with various bits.
Always have a plumbing snake as they can save you $1000’s in the long run.
Also, identify any yard tools you may need. Remember to plan it out cause they can cost quite a bit so you may have to buy them one at a time. I would recommend a mower, weed eater, edger and pressure washer. With those you can keep you house looking clean and neat.