Some of the texture, which doesn't show in these pictures is not so great in places, but the contractor repaired 90% of the bad places.  

Iam a realtor maybe I can help you out a little.Life, for you would be so much easier if you were to use a realtor until you get your feet planted flat on the ground.

Would be possible to move it or plant a new one on your property to where you get the same look/feel, but they can't do anything about it?

I was talking to a friend last week who is a plant manager of a large industrial plant here.

The sprayer really shines when it comes to textured ceilings, though.

Pulling the weeds, cutting the grass, planting flowers and shrubs, rearranging the flower beds.

@Michael Plante That's just for the umbrella itself. 

There's going to be 4000 people here for a 3 month maintenance operation at a plant. 

Too much copper is toxic to plants because it prevents photosynthesis.https://homeguides.sfgate.com/copper-control-algae-97682.htmlThat said you should get the roof inspected.You may get lucky, the roof may be in great shape other than the algae on it ( note there are shingle solvents designed to wash off roofs: don’t bleach ( bleach is ineffective against mold) or power wash.)Once cleaned, install the copper as a preventative measure.Other wise I agree with many of the comments, you might have to bite the bullet on the roof, a roof is a big deal to perspective buyers.

Doing vynil plant in the basement, already a vynil in the 1st flooor….