I stuffed the old vent full of rock wool insulation and covered the end with plastic as we explained the differences to expect to the tenant.  

In theory the banks want that twenty percent down so that they are insulated in the case of a foreclosure. 2.  

.$2,000 demo, permit fee and miscellaneous items.This is just a quick run down and like I said price will vary if you want to gut the whole place because at that point you have to add insulation etc.Hope this is helpful. 

If you looking for someone to quarterback a project and insulate you from the day to day nuisances of renovations it would be good.

The back house needs everything: from insulation to interior walls, flooring electrical, plumbing, kitchen, bathroom etc.

Starts with setting up plastic containment around mold infected area, negative air HEPA filters, drywall and insulation removal, literally scrubbing studs with wire brushes, and treating with chemicals.

Then we had to replace areas of framing on interior and rebuild the window framing plus repair the aged window, but you might need to consider new window as well based on how many on that wall. then drywall and any other infrastructure that needs to be done on that wall: electric plumbing, etc. that affected wall had plumbing so new code dictated double wall with insulation on outer most wall which added additional cost. termite damage went as high as the roof truss and I needed to replace a beam, but luckily above the bottom beam was the only affected area.

Move the insulation away from the bases and check to see if they are on an interior wall.

Try spray foam insulation in your ceiling.

Check if you have bare pipes in the attic, if you do, get them wrapped with pipe insulation.