Are you painting the ceiling because of stains?

He should go over that place with a fine toothed comb and charge for every little hole in the wall, every scratch on a door, every stain on carpet or walls.

@Maureen SepulvedaHi Maureen,I've seen similar shingles roofs repainted (over the original stain) and from the road they look interesting, but up close if the shingles are past their service life the paint doesn't hide that fact very well.Maybe beige walls and dark brown shingles would make it look more appealing?

Deck is the only thing in the entire house that needs to be renovated, but it's just scraping off the old paint and repainting/staining.

In fact the older vinyl windows were so badly stained with nicotine I just replaced them.

We usually find pet bowls, boyfriend’s clothes and belongings, hoarders, and smoke stains or mj usage.

Lumber Liquidators has something better around the same price and can withstand traffic and stains. 

The interior wall surfaces are all tongue and groove boards (cedar), there are visible nicotine stains on the air returns.Every single surface will need to be cleaned in some capacity, but I am left scratching my head at effective solutions.I've found a few anecdotal recommendations about using white vinegar or TrisodiumPhosphate, but when you need to scrub the walls and the ceilings of a 1700+ sqft house that seems pretty daunting and time consuming given that it is tongue and groove.

It's in great condition except the flooring is outdated (but in good condition, minimal wear and stains).

For instance, if the inspector really wants another coat of paint on the already painted walls, ask if it was because he thought the underlying stains or spackle were bleeding through?