If you prefer to call them trades, by all means do. I build all kinds
of things, do plumbing, electrical, flooring. I don't install
sheetrock, tape or mud since it's a lot of work and a skill that's
best done by a pro.
We gutted our'60s kitchen and rebuilt with new cabinets, granite and
oak flooring, demo'd and refinished 800 sq. ft of basement, ripped off
ugly 50s siding to expose the original 1923 clapboard, sanded,
replaced bad sections, recaulked and painted. Rebuilt a 150 sq ft
second story deck from scratch.
I do my own gardening including summer vegatables. This summer I'm
rebuilding our garage.