termite inspection results. what to do.

[Patrick H.]

I received a termite report for a property I was looking at buying.  It has small stuff like water leakage at sink fixture handles, water leakage in sink drain pipe, water stain beneath sink.  I think a turn of a screw would fix those.

One item stated fungus damage to rear patio roof rafters, blocking, support beam and post.  The estimate was $4,200.  I think the whole patio isn't worth that much.  Probably $1,500 to build (open trellis). 

Another item was master bedroom sheetrock window sill damage from open bedroom window.  $386 estimate.

Are these items that the seller should repair or are things that are overstating the issue.  Just want to know if I should walk away and just look for another home, and whether these are major issues with the home.