I used to do a bit of gardening here, and everyone thought I was crazy. At the time, I thought they were crazy for thinking I was crazy but now I understand I was indeed crazy.
It's ridiculously hot outside, there are all kinds of creepy crawlies all over the place, and there are millions of locals standing ready to do such chores for a pittance.
If you want to do some physical activity, play golf, and bring an umbrella.
As for maintenance inside the house, there is no chance of the authorities questioning this, as they won't know you're doing it, but if you pay someone else to do it, you will have more time for golf.