First, it helps to read a little more before commenting, especially when the answer is right there in black and white.

I said clients' schedules can change my plans. Sometimes I take days, even weeks to complete the work on a property. (I follow the daily schedule only about 60% of the time)

"Real estate surveyor", not "investor." Some branches of my profession include land and property valuation/appraisal, sales and letting, and facilities management.

Yes, for close to three years I've worked that "job," which is my main career, from my home office as an independent consultant, and I've taken full advantage of the flexibility.