A complete overhaul of the kitchen and bathrooms, including cabinets, countertops, LVP flooring, electrical and plumbing fixtures.

Fix your cabinet with the missing door, remove the stickers from the mirror and window, close the toilet lid, sweep and mop the floors, use a wide-angle lens, and take pictures from an appropriate angle. 

A complete overhaul of the kitchen and bathrooms, including cabinets, countertops, LVP flooring, electrical and plumbing fixtures.

I would add specific details like pictures of the fixtures/flooring/cabinets.....SKU #s and pictures of everything.

It's nothing like fancy pants hanging around kitchen stores picking out just the right cabinet door and handle pulls.

I've already renovated one of the bathrooms, and I’m planning to paint the interior, update the kitchen cabinets, possibly sand the wood floors, build a fence is a corner lot and increase the rent for the room since my tenant is currently renting the entire 3-bedroom, 2-bathroom house for $800 a month.

That's not exactly an up and coming area -- I'd research who built them - can likely find that by going to the SG County Recorded Docs site or by seeing who pulled the permits during const -- Wichita has been on a duplex building boom -- look at the tax value -- They probably have that or less in it on the build - I also doubt they were built to be quality long term -- things such as the trim/cabinets etc -- they all look like the cheapest stuff a guy could buy - if the cabinets aren't oak and there is MDF or pine trim and pre-hung doors with engineered wood jams I'd run.  2-3 yrs ago for $180k -205 or so you could buy duplexes in Maize, Kechi, Valley center all day to builders that were selling them off to investors - not worth that in that area.

For instance, if the contract just says "install kitchen cabinets," it might be unclear whether this includes removal of old cabinets, disposal, or even painting.So what do we need to include in a general contractor agreement?

I installed cabinets, painted it, and made it back into a residential rental unit.

i.e. paint, flooring, cabinets, tile, etc.